URI:
       Fix errors and warnings and make the code cleaner - blind - suckless command-line video editing utility
  HTML git clone git://git.suckless.org/blind
   DIR Log
   DIR Files
   DIR Refs
   DIR README
   DIR LICENSE
       ---
   DIR commit 0f03cc378e6ce48f17a20e409f93bfc11345a6ed
   DIR parent d3cd95e055f50df97979bcca7bb26a3edd4b82ee
  HTML Author: Mattias Andrée <maandree@kth.se>
       Date:   Tue, 16 May 2017 20:14:22 +0200
       
       Fix errors and warnings and make the code cleaner
       
       Signed-off-by: Mattias Andrée <maandree@kth.se>
       
       Diffstat:
         M Makefile                            |       8 ++++++--
         M config.mk                           |       2 +-
         M src/blind-arithm.c                  |      34 ++++++++++++++-----------------
         M src/blind-colour-ciexyz.c           |       2 +-
         M src/blind-colour-srgb.c             |       8 ++++----
         M src/blind-compress.c                |       3 +--
         M src/blind-concat.c                  |      25 +++++++++----------------
         M src/blind-convert.c                 |      14 +++++---------
         M src/blind-crop.c                    |       5 +----
         M src/blind-cut.c                     |       5 +----
         M src/blind-decompress.c              |       5 +----
         M src/blind-dissolve.c                |       7 ++-----
         M src/blind-extend.c                  |       5 +----
         M src/blind-flip.c                    |       3 +--
         M src/blind-flop.c                    |       3 +--
         M src/blind-from-image.c              |      23 +++++++++--------------
         M src/blind-from-portable.c           |      22 +++++++++-------------
         M src/blind-from-text.c               |       5 +----
         M src/blind-from-video.c              |      60 +++++++++++++-------------------
         M src/blind-gauss-blur.c              |      36 +++++++++++++------------------
         M src/blind-invert-luma.c             |       5 +----
         M src/blind-kernel.c                  |      19 ++++++++++---------
         M src/blind-make-kernel.c             |       8 ++------
         M src/blind-next-frame.c              |       5 +----
         M src/blind-read-head.c               |       6 +-----
         M src/blind-repeat.c                  |       9 +++------
         M src/blind-reverse.c                 |      13 ++++++-------
         M src/blind-rewrite-head.c            |      11 +++--------
         M src/blind-set-alpha.c               |       5 +----
         M src/blind-set-luma.c                |       5 +----
         M src/blind-set-saturation.c          |       5 +----
         M src/blind-single-colour.c           |       5 +----
         M src/blind-skip-pattern.c            |       5 +----
         M src/blind-split.c                   |       6 +-----
         M src/blind-stack.c                   |       7 ++-----
         M src/blind-temporal-mean.c           |      52 ++++++++++---------------------
         M src/blind-time-blur.c               |       6 +-----
         M src/blind-to-image.c                |      29 +++++++++++++----------------
         M src/blind-to-portable.c             |      38 ++++++++++++++++---------------
         M src/blind-to-text.c                 |       3 +--
         M src/blind-to-video.c                |      40 +++++++++++++------------------
         M src/blind-translate.c               |       6 +-----
         M src/blind-transpose.c               |       3 +--
         M src/blind-write-head.c              |       2 +-
         A src/common.h                        |      37 +++++++++++++++++++++++++++++++
         M src/stream.c                        |      11 +----------
         M src/util.c                          |      23 +++++------------------
         M src/util.h                          |       9 ++++++++-
         M src/util/colour.h                   |     316 +++++++++++--------------------
         M src/util/io.h                       |       4 ++--
         A src/video-math.h                    |      90 +++++++++++++++++++++++++++++++
       
       51 files changed, 469 insertions(+), 589 deletions(-)
       ---
   DIR diff --git a/Makefile b/Makefile
       @@ -41,7 +41,9 @@ BIN =\
                blind-to-video\
                blind-translate\
                blind-transpose\
       -        blind-write-head
       +        blind-write-head\
       +        blind-kernel\
       +        blind-temporal-mean
        
        # TODO Not tested yet (and doesn't have any manpages):
        #    blind-kernel
       @@ -59,6 +61,7 @@ SRC = $(BIN:=.c) util.c stream.c
        
        HDR =\
                arg.h\
       +        common.h\
                stream.h\
                util.h\
                util/to.h\
       @@ -71,7 +74,8 @@ HDR =\
                util/efflush.h\
                util/efunc.h\
                util/eprintf.h\
       -        util/fshut.h
       +        util/fshut.h\
       +        video-math.h
        
        MISCFILES = Makefile config.mk LICENSE README TODO
        
   DIR diff --git a/config.mk b/config.mk
       @@ -6,6 +6,6 @@ PREFIX = /usr/local
        MANPREFIX = $(PREFIX)/share/man
        
        # You may want to remove -DHAVE_PRCTL and -DHAVE_EPOLL from CPPFLAGS if you are not using Linux.
       -CFLAGS   = -std=c99 -Wall -pedantic -O2
       +CFLAGS   = -std=c11 -Wall -pedantic -O2
        CPPFLAGS = -D_DEFAULT_SOURCE -D_BSD_SOURCE -D_XOPEN_SOURCE=700 -D_FILE_OFFSET_BITS=64 -DHAVE_PRCTL -DHAVE_EPOLL
        LDFLAGS  = -lm -s
   DIR diff --git a/src/blind-arithm.c b/src/blind-arithm.c
       @@ -1,9 +1,5 @@
        /* See LICENSE file for copyright and license details. */
       -#include "stream.h"
       -#include "util.h"
       -
       -#include <math.h>
       -#include <string.h>
       +#include "common.h"
        
        USAGE("[-axyz] operation right-hand-stream")
        
       @@ -15,16 +11,16 @@ static int skip_z = 0;
        /* Because the syntax for a function returning a function pointer is disgusting. */
        typedef void (*process_func)(struct stream *left, struct stream *right, size_t n);
        
       -#define LIST_OPERATORS(PIXFMT, TYPE, SUFFIX)\
       -        X(add, *lh += rh,                                 PIXFMT, TYPE)\
       -        X(sub, *lh -= rh,                                 PIXFMT, TYPE)\
       -        X(mul, *lh *= rh,                                 PIXFMT, TYPE)\
       -        X(div, *lh /= rh,                                 PIXFMT, TYPE)\
       -        X(exp, *lh = pow##SUFFIX(*lh, rh),                PIXFMT, TYPE)\
       -        X(log, *lh = log##SUFFIX(*lh) / log##SUFFIX(rh),  PIXFMT, TYPE)\
       -        X(min, *lh = MIN(*lh, rh),                        PIXFMT, TYPE)\
       -        X(max, *lh = MAX(*lh, rh),                        PIXFMT, TYPE)\
       -        X(abs, *lh = fabs##SUFFIX(*lh - rh) + rh,         PIXFMT, TYPE)
       +#define LIST_OPERATORS(PIXFMT, TYPE)\
       +        X(add, *lh += rh,                  PIXFMT, TYPE)\
       +        X(sub, *lh -= rh,                  PIXFMT, TYPE)\
       +        X(mul, *lh *= rh,                  PIXFMT, TYPE)\
       +        X(div, *lh /= rh,                  PIXFMT, TYPE)\
       +        X(exp, *lh = pow(*lh, rh),         PIXFMT, TYPE)\
       +        X(log, *lh = log2(*lh) / log2(rh), PIXFMT, TYPE)\
       +        X(min, *lh = MIN(*lh, rh),         PIXFMT, TYPE)\
       +        X(max, *lh = MAX(*lh, rh),         PIXFMT, TYPE)\
       +        X(abs, *lh = abs(*lh - rh) + rh,   PIXFMT, TYPE)
        
        #define C(CH, CHI, ALGO, TYPE)\
                (!skip_##CH ? ((lh = ((TYPE *)(left->buf + i)) + (CHI),\
       @@ -49,8 +45,8 @@ typedef void (*process_func)(struct stream *left, struct stream *right, size_t n
                                C(a, 3, ALGO, TYPE);\
                        }\
                }
       -LIST_OPERATORS(xyza, double,)
       -LIST_OPERATORS(xyzaf, float, f)
       +LIST_OPERATORS(xyza, double)
       +LIST_OPERATORS(xyzaf, float)
        #undef X
        
        #if defined(__GNUC__) && !defined(__clang__)
       @@ -62,7 +58,7 @@ get_process_xyza(const char *operation)
        {
        #define X(NAME, ALGO, PIXFMT, TYPE)\
                if (!strcmp(operation, #NAME)) return process_##PIXFMT##_##NAME;
       -        LIST_OPERATORS(xyza, double,)
       +        LIST_OPERATORS(xyza, double)
        #undef X
                eprintf("algorithm not recognised: %s\n", operation);
                return NULL;
       @@ -73,7 +69,7 @@ get_process_xyzaf(const char *operation)
        {
        #define X(NAME, ALGO, PIXFMT, TYPE)\
                if (!strcmp(operation, #NAME)) return process_##PIXFMT##_##NAME;
       -        LIST_OPERATORS(xyzaf, float, f)
       +        LIST_OPERATORS(xyzaf, float)
        #undef X
                eprintf("algorithm not recognised: %s\n", operation);
                return NULL;
   DIR diff --git a/src/blind-colour-ciexyz.c b/src/blind-colour-ciexyz.c
       @@ -1,5 +1,5 @@
        /* See LICENSE file for copyright and license details. */
       -#include "util.h"
       +#include "common.h"
        
        USAGE("(X Y Z | Y)")
        
   DIR diff --git a/src/blind-colour-srgb.c b/src/blind-colour-srgb.c
       @@ -1,5 +1,5 @@
        /* See LICENSE file for copyright and license details. */
       -#include "util.h"
       +#include "common.h"
        
        USAGE("[-d depth] [-l] red green blue")
        
       @@ -26,9 +26,9 @@ main(int argc, char *argv[])
        
                max   = 1ULL << (depth - 1);
                max  |= max - 1;
       -        red   = etolf_arg("the red value",   argv[0]) / max;
       -        green = etolf_arg("the green value", argv[1]) / max;
       -        blue  = etolf_arg("the blue value",  argv[2]) / max;
       +        red   = etolf_arg("the red value",   argv[0]) / (double)max;
       +        green = etolf_arg("the green value", argv[1]) / (double)max;
       +        blue  = etolf_arg("the blue value",  argv[2]) / (double)max;
                if (!linear) {
                        red   = srgb_decode(red);
                        green = srgb_decode(green);
   DIR diff --git a/src/blind-compress.c b/src/blind-compress.c
       @@ -1,6 +1,5 @@
        /* See LICENSE file for copyright and license details. */
       -#include "stream.h"
       -#include "util.h"
       +#include "common.h"
        
        USAGE("")
        
   DIR diff --git a/src/blind-concat.c b/src/blind-concat.c
       @@ -1,12 +1,5 @@
        /* See LICENSE file for copyright and license details. */
       -#include "stream.h"
       -#include "util.h"
       -
       -#if defined(HAVE_EPOLL)
       -# include <sys/epoll.h>
       -#endif
       -#include <sys/mman.h>
       -#include <string.h>
       +#include "common.h"
        
        USAGE("[-o output-file [-j jobs]] first-stream ... last-stream")
        
       @@ -97,9 +90,9 @@ concat_to_file_parallel(int argc, char *argv[], char *output_file, size_t jobs)
        #else
                struct epoll_event *events;
                struct stream *streams;
       -        size_t *ptrs;
       +        off_t *ptrs, ptr;
                char head[STREAM_HEAD_MAX];
       -        size_t ptr, frames = 0, next = 0, j;
       +        size_t frames = 0, next = 0, j;
                ssize_t headlen;
                int fd, i, n, pollfd;
        
       @@ -123,14 +116,14 @@ concat_to_file_parallel(int argc, char *argv[], char *output_file, size_t jobs)
                SPRINTF_HEAD_ZN(head, frames, streams->width, streams->height, streams->pixfmt, &headlen);
        
                echeck_dimensions(streams, WIDTH | HEIGHT, NULL);
       -        ptr = (size_t)headlen;
       +        ptr = (off_t)headlen;
                for (i = 0; i < argc; i++) {
                        ptrs[i] = ptr;
       -                ptr += streams->frames * streams->frame_size;
       +                ptr += (off_t)streams->frames * (off_t)streams->frame_size;
                }
                if (ftruncate(fd, (off_t)ptr))
                        eprintf("ftruncate %s:", output_file);
       -        fadvise_random(fd, (size_t)headlen, 0);
       +        fadvise_random(fd, (off_t)headlen, 0);
        
                pollfd = epoll_create1(0);
                if (pollfd == -1)
       @@ -139,7 +132,7 @@ concat_to_file_parallel(int argc, char *argv[], char *output_file, size_t jobs)
                epwriteall(fd, head, (size_t)headlen, 0, output_file);
                for (i = 0; i < argc; i++) {
                        epwriteall(fd, streams[i].buf, streams[i].ptr, ptrs[i], output_file);
       -                ptrs[i] += streams[i].ptr;
       +                ptrs[i] += (off_t)(streams[i].ptr);
                        streams[i].ptr = 0;
                }
        
       @@ -155,14 +148,14 @@ concat_to_file_parallel(int argc, char *argv[], char *output_file, size_t jobs)
                jobs = j;
        
                while (jobs) {
       -                n = epoll_wait(pollfd, events, jobs, -1);
       +                n = epoll_wait(pollfd, events, (int)jobs, -1);
                        if (n < 0)
                                eprintf("epoll_wait:");
                        for (i = 0; i < n; i++) {
                                j = events[i].data.u64;
                                if (streams[j].ptr || eread_stream(streams + j, SIZE_MAX)) {
                                        epwriteall(fd, streams[j].buf, streams[j].ptr, ptrs[j], output_file);
       -                                ptrs[j] += streams[j].ptr;
       +                                ptrs[j] += (off_t)(streams[j].ptr);
                                        streams[j].ptr = 0;
                                        continue;
                                }
   DIR diff --git a/src/blind-convert.c b/src/blind-convert.c
       @@ -1,9 +1,5 @@
        /* See LICENSE file for copyright and license details. */
       -#include "stream.h"
       -#include "util.h"
       -
       -#include <alloca.h>
       -#include <string.h>
       +#include "common.h"
        
        USAGE("pixel-format ...")
        
       @@ -20,10 +16,10 @@ static void (*outconv)(double *xyzas, size_t n);
                                interm = buf;\
                                n = stream->ptr / stream->pixel_size;\
                                for (m = n; m--; in += 4, interm += 4) { \
       -                                interm[0] = (TYPE)(in[0]);\
       -                                interm[1] = (TYPE)(in[1]);\
       -                                interm[2] = (TYPE)(in[2]);\
       -                                interm[3] = (TYPE)(in[3]);\
       +                                interm[0] = (double)(in[0]);\
       +                                interm[1] = (double)(in[1]);\
       +                                interm[2] = (double)(in[2]);\
       +                                interm[3] = (double)(in[3]);\
                                }\
                                outconv(buf, n);\
                                n *= stream->pixel_size;\
   DIR diff --git a/src/blind-crop.c b/src/blind-crop.c
       @@ -1,8 +1,5 @@
        /* See LICENSE file for copyright and license details. */
       -#include "stream.h"
       -#include "util.h"
       -
       -#include <string.h>
       +#include "common.h"
        
        USAGE("[-s | -S | -t] width height left top")
        
   DIR diff --git a/src/blind-cut.c b/src/blind-cut.c
       @@ -1,8 +1,5 @@
        /* See LICENSE file for copyright and license details. */
       -#include "stream.h"
       -#include "util.h"
       -
       -#include <string.h>
       +#include "common.h"
        
        USAGE("start-point (end-point | 'end') file")
        
   DIR diff --git a/src/blind-decompress.c b/src/blind-decompress.c
       @@ -1,8 +1,5 @@
        /* See LICENSE file for copyright and license details. */
       -#include "stream.h"
       -#include "util.h"
       -
       -#include <string.h>
       +#include "common.h"
        
        USAGE("")
        
   DIR diff --git a/src/blind-dissolve.c b/src/blind-dissolve.c
       @@ -1,8 +1,5 @@
        /* See LICENSE file for copyright and license details. */
       -#include "stream.h"
       -#include "util.h"
       -
       -#include <string.h>
       +#include "common.h"
        
        USAGE("[-r]")
        
       @@ -55,7 +52,7 @@ main(int argc, char *argv[])
        
                fprint_stream_head(stdout, &stream);
                efflush(stdout, "<stdout>");
       -        fm_double = fm = stream.frames - 1;
       +        fm_double = (double)(fm = stream.frames - 1);
                fm_float = (float)fm_double;
                process_each_frame_segmented(&stream, STDOUT_FILENO, "<stdout>", process);
                return 0;
   DIR diff --git a/src/blind-extend.c b/src/blind-extend.c
       @@ -1,8 +1,5 @@
        /* See LICENSE file for copyright and license details. */
       -#include "stream.h"
       -#include "util.h"
       -
       -#include <string.h>
       +#include "common.h"
        
        USAGE("[-l left] [-r right] [-a above] [-b below] [-t]")
        
   DIR diff --git a/src/blind-flip.c b/src/blind-flip.c
       @@ -1,6 +1,5 @@
        /* See LICENSE file for copyright and license details. */
       -#include "stream.h"
       -#include "util.h"
       +#include "common.h"
        
        USAGE("")
        
   DIR diff --git a/src/blind-flop.c b/src/blind-flop.c
       @@ -1,6 +1,5 @@
        /* See LICENSE file for copyright and license details. */
       -#include "stream.h"
       -#include "util.h"
       +#include "common.h"
        
        USAGE("")
        
   DIR diff --git a/src/blind-from-image.c b/src/blind-from-image.c
       @@ -1,10 +1,5 @@
        /* See LICENSE file for copyright and license details. */
       -#include "stream.h"
       -#include "util.h"
       -
       -#include <arpa/inet.h>
       -#include <inttypes.h>
       -#include <string.h>
       +#include "common.h"
        
        USAGE("[-h] [-f | -p]")
        
       @@ -24,7 +19,7 @@ get_value_u8(char** bufp)
        {
                uint8_t value = *(uint8_t *)(*bufp);
                *bufp += 1;
       -        return value / value_max;
       +        return (double)value / (double)value_max;
        }
        
        static double
       @@ -32,7 +27,7 @@ get_value_u16(char** bufp)
        {
                uint16_t value = ntohs(*(uint16_t *)(*bufp));
                *bufp += 2;
       -        return value / value_max;
       +        return (double)value / (double)value_max;
        }
        
        static double
       @@ -40,7 +35,7 @@ get_value_u32(char** bufp)
        {
                uint32_t value = ntohl(*(uint32_t *)(*bufp));
                *bufp += 4;
       -        return value / value_max;
       +        return (double)value / (double)value_max;
        }
        
        static double
       @@ -56,7 +51,7 @@ get_value_u64(char** bufp)
                value |= (uint64_t)(buf[6]) <<  8;
                value |= (uint64_t)(buf[7]);
                *bufp += 8;
       -        return value / value_max;
       +        return (double)value / (double)value_max;
        }
        
        static void
       @@ -96,13 +91,13 @@ static size_t
        pam_head(int fd, const char *fname)
        {
                size_t ptr;
       -        ssize_t r;
       +        size_t r;
                char *p;
                unsigned long long int maxval = UINT8_MAX;
                for (ptr = 0;;) {
                        if (!(r = eread(fd, buf + ptr, sizeof(buf) - 1, fname)))
                                eprintf("%s\n", conv_fail_msg);
       -                ptr += (size_t)r;
       +                ptr += r;
                        for (;;) {
                                p = memchr(buf, '\n', ptr);
                                if (!p) {
       @@ -163,8 +158,8 @@ header_done:
                        pixel_size = sizeof(uint64_t);
                        get_value = get_value_u64;
                }
       -        value_max = maxval;
       -        pixel_size *= (with_colour ? 3 : 1) + with_alpha;
       +        value_max = (double)maxval;
       +        pixel_size *= (size_t)((with_colour ? 3 : 1) + with_alpha);
                convert = from_srgb;
                return ptr;
        }
   DIR diff --git a/src/blind-from-portable.c b/src/blind-from-portable.c
       @@ -1,17 +1,12 @@
        /* See LICENSE file for copyright and license details. */
       -#include "stream.h"
       -#include "util.h"
       -
       -#include <alloca.h>
       -#include <math.h>
       -#include <string.h>
       +#include "common.h"
        
        USAGE("[-s]")
        
        #define USING_BINARY32 0
        #define USING_BINARY64 0
        
       -#define CONV(ITYPE, SITYPE, OTYPE, EXPONENT, HA2EXPONENT, FRACTION, SUFFIX)\
       +#define CONV(ITYPE, SITYPE, OTYPE, EXPONENT, HA2EXPONENT, FRACTION)\
                do {\
                        static int cache_i = 0;\
                        static ITYPE cache_in[] = {0, 0, 0, 0};\
       @@ -24,6 +19,7 @@ USAGE("[-s]")
                                cache_i &= 3;\
                                return ret;\
                        }\
       +                cache_in[cache_i] = portable;\
                        signb = portable >> (EXPONENT + FRACTION);\
                        exponent = (portable >> FRACTION) ^ (signb << EXPONENT);\
                        fraction = portable & (((ITYPE)1 << FRACTION) - 1);\
       @@ -33,8 +29,8 @@ USAGE("[-s]")
                                } else {\
                                        sexponent = 1 - HA2EXPONENT - FRACTION;\
                                        dexponent = (OTYPE)sexponent;\
       -                                ret = (ITYPE)fraction;\
       -                                ret *= pow##SUFFIX((OTYPE)2.0, dexponent);\
       +                                ret = (OTYPE)fraction;\
       +                                ret *= pow((OTYPE)2.0, dexponent);\
                                }\
                        } else if (exponent + 1 == (ITYPE)1 << EXPONENT) {\
                                ret = (OTYPE)(fraction ? NAN : INFINITY);\
       @@ -43,8 +39,8 @@ USAGE("[-s]")
                                sexponent = (SITYPE)exponent;\
                                sexponent -= HA2EXPONENT + FRACTION;\
                                dexponent = (OTYPE)sexponent;\
       -                        ret = (ITYPE)fraction;\
       -                        ret *= pow##SUFFIX((OTYPE)2.0, dexponent);\
       +                        ret = (OTYPE)fraction;\
       +                        ret *= pow((OTYPE)2.0, dexponent);\
                        }\
                        ret = signb ? -ret : ret;\
                        cache_out[cache_i++] = ret;\
       @@ -78,8 +74,8 @@ USAGE("[-s]")
                                eprintf("%s: incomplete frame\n", stream->file);\
                } while (0)
        
       -static double conv_double(uint64_t portable) {CONV(uint64_t, int64_t, double, 11, 1023, 52,);}
       -static float  conv_float (uint32_t portable) {CONV(uint32_t, int32_t, float, 8, 127, 23, f);}
       +static double conv_double(uint64_t portable) {CONV(uint64_t, int64_t, double, 11, 1023, 52);}
       +static float  conv_float (uint32_t portable) {CONV(uint32_t, int32_t, float, 8, 127, 23);}
        
        static void process_xyza (struct stream *stream, int strict) {PROCESS(uint64_t, double, 64);}
        static void process_xyzaf(struct stream *stream, int strict) {PROCESS(uint32_t, float, 32);}
   DIR diff --git a/src/blind-from-text.c b/src/blind-from-text.c
       @@ -1,8 +1,5 @@
        /* See LICENSE file for copyright and license details. */
       -#include "stream.h"
       -#include "util.h"
       -
       -#include <string.h>
       +#include "common.h"
        
        USAGE("")
        
   DIR diff --git a/src/blind-from-video.c b/src/blind-from-video.c
       @@ -1,10 +1,5 @@
        /* See LICENSE file for copyright and license details. */
       -#include "stream.h"
       -#include "util.h"
       -
       -#include <sys/mman.h>
       -#include <sys/stat.h>
       -#include <string.h>
       +#include "common.h"
        
        USAGE("[-F pixel-format] [-r frame-rate] [-w width -h height] [-dL] input-file output-file")
        
       @@ -76,21 +71,23 @@ get_metadata(char *file, size_t *width, size_t *height)
                        exit(1);
        }
        
       -#define CONVERT_SEGMENT(TYPE, SUFFIX)\
       +#define CONVERT_SEGMENT(TYPE)\
                do {\
                        typedef TYPE pixel_t[4];\
                        size_t i, ptr;\
                        TYPE y, u, v, max = (TYPE)UINT16_MAX;\
                        TYPE r, g, b;\
                        pixel_t pixels[1024];\
       +                uint16_t *pix;\
                        if (draft) {\
                                for (ptr = i = 0; ptr < n; ptr += 8) {\
       +                                pix = (uint16_t *)(buf + ptr);\
                                        pixels[i][3] = 1;\
       -                                y = (long int)(le16toh(((uint16_t *)(buf + ptr))[1])) -  16L * 256L;\
       -                                u = (long int)(le16toh(((uint16_t *)(buf + ptr))[2])) - 128L * 256L;\
       -                                v = (long int)(le16toh(((uint16_t *)(buf + ptr))[3])) - 128L * 256L;\
       -                                scaled_yuv_to_ciexyz##SUFFIX(y, u, v, pixels[i] + 0,\
       -                                                             pixels[i] + 1, pixels[i] + 2);\
       +                                y = (TYPE)((long int)(le16toh(pix[1])) -  16L * 256L);\
       +                                u = (TYPE)((long int)(le16toh(pix[2])) - 128L * 256L);\
       +                                v = (TYPE)((long int)(le16toh(pix[3])) - 128L * 256L);\
       +                                scaled_yuv_to_ciexyz(y, u, v, pixels[i] + 0,\
       +                                                     pixels[i] + 1, pixels[i] + 2);\
                                        if (++i == 1024) {\
                                                i = 0;\
                                                ewriteall(fd, pixels, sizeof(pixels), file);\
       @@ -98,15 +95,16 @@ get_metadata(char *file, size_t *width, size_t *height)
                                }\
                        } else {\
                                for (ptr = i = 0; ptr < n; ptr += 8) {\
       -                                pixels[i][3] = le16toh(((uint16_t *)(buf + ptr))[0]) / max;\
       -                                y = ((long int)le16toh(((uint16_t *)(buf + ptr))[1]) -  16L * 256L) / max;\
       -                                u = ((long int)le16toh(((uint16_t *)(buf + ptr))[2]) - 128L * 256L) / max;\
       -                                v = ((long int)le16toh(((uint16_t *)(buf + ptr))[3]) - 128L * 256L) / max;\
       -                                yuv_to_srgb##SUFFIX(y, u, v, &r, &g, &b);\
       -                                r = srgb_decode##SUFFIX(r);\
       -                                g = srgb_decode##SUFFIX(g);\
       -                                b = srgb_decode##SUFFIX(b);\
       -                                srgb_to_ciexyz##SUFFIX(r, g, b, pixels[i] + 0, pixels[i] + 1, pixels[i] + 2);\
       +                                pix = (uint16_t *)(buf + ptr);\
       +                                pixels[i][3] = le16toh(pix[0]) / max;\
       +                                y = (TYPE)((long int)le16toh(pix[1]) -  16L * 256L) / max;\
       +                                u = (TYPE)((long int)le16toh(pix[2]) - 128L * 256L) / max;\
       +                                v = (TYPE)((long int)le16toh(pix[3]) - 128L * 256L) / max;\
       +                                yuv_to_srgb(y, u, v, &r, &g, &b);\
       +                                r = srgb_decode(r);\
       +                                g = srgb_decode(g);\
       +                                b = srgb_decode(b);\
       +                                srgb_to_ciexyz(r, g, b, pixels[i] + 0, pixels[i] + 1, pixels[i] + 2);\
                                        if (++i == 1024) {\
                                                i = 0;\
                                                ewriteall(fd, pixels, sizeof(pixels), file);\
       @@ -117,17 +115,8 @@ get_metadata(char *file, size_t *width, size_t *height)
                                ewriteall(fd, pixels, i * sizeof(*pixels), file);\
                } while (0)
        
       -static void
       -convert_segment_xyza(char *buf, size_t n, int fd, const char *file)
       -{
       -        CONVERT_SEGMENT(double,);
       -}
       -
       -static void
       -convert_segment_xyzaf(char *buf, size_t n, int fd, const char *file)
       -{
       -        CONVERT_SEGMENT(float, _f);
       -}
       +static void convert_segment_xyza (char *buf, size_t n, int fd, const char *file) {CONVERT_SEGMENT(double);}
       +static void convert_segment_xyzaf(char *buf, size_t n, int fd, const char *file) {CONVERT_SEGMENT(float);}
        
        static void
        convert(const char *infile, int outfd, const char *outfile, size_t width, size_t height, const char *frame_rate)
       @@ -136,7 +125,6 @@ convert(const char *infile, int outfd, const char *outfile, size_t width, size_t
                const char *cmd[13];
                int status, pipe_rw[2];
                size_t i = 0, n, ptr;
       -        ssize_t r;
                pid_t pid;
        
                cmd[i++] = "ffmpeg";
       @@ -166,9 +154,9 @@ convert(const char *infile, int outfd, const char *outfile, size_t width, size_t
                close(pipe_rw[1]);
        
                for (ptr = 0;;) {
       -                if (!(r = eread(pipe_rw[0], buf + ptr, sizeof(buf) - ptr, "<subprocess>")))
       +                if (!(n = eread(pipe_rw[0], buf + ptr, sizeof(buf) - ptr, "<subprocess>")))
                                break;
       -                ptr += (size_t)r;
       +                ptr += n;
                        n = ptr - (ptr % 8);
                        convert_segment(buf, n, outfd, outfile);
                        memmove(buf, buf + n, ptr -= n);
       @@ -253,7 +241,7 @@ main(int argc, char *argv[])
                }
        
                if (skip_length) {
       -                SPRINTF_HEAD_ZN(head, frames, width, height, pixfmt, &headlen);
       +                SPRINTF_HEAD_ZN(head, 0, width, height, pixfmt, &headlen);
                        ewriteall(outfd, head, (size_t)headlen, outfile);
                }
        
   DIR diff --git a/src/blind-gauss-blur.c b/src/blind-gauss-blur.c
       @@ -1,9 +1,5 @@
        /* See LICENSE file for copyright and license details. */
       -#include "stream.h"
       -#include "util.h"
       -
       -#include <math.h>
       -#include <string.h>
       +#include "common.h"
        
        USAGE("[-j jobs] [-s spread | -s 'auto'] [-achvy] sd-stream")
        
       @@ -62,13 +58,13 @@ static size_t spread = 0;
                if (auto_spread && spread < 1)\
                        spread = 1;
        
       -#define BLUR_PIXEL(START, LOOP, DISTANCE, SUFFIX)\
       +#define BLUR_PIXEL(TYPE, START, LOOP, DISTANCE)\
                if (k[0] == k[1] && k[1] == k[2]) {\
                        START;\
                        for (LOOP) {\
       -                        d = (DISTANCE);\
       +                        d = (TYPE)(DISTANCE);\
                                d *= d;\
       -                        m = c[0] * exp##SUFFIX(d * k[0]);\
       +                        m = c[0] * exp(d * k[0]);\
                                img[i2][0] += clr[i1][0] * m;\
                                img[i2][1] += clr[i1][1] * m;\
                                img[i2][2] += clr[i1][2] * m;\
       @@ -87,11 +83,11 @@ static size_t spread = 0;
                                        continue;\
                                START;\
                                for (LOOP) {\
       -                                d = (DISTANCE);\
       +                                d = (TYPE)(DISTANCE);\
                                        d *= d;\
       -                                m = c[i] * exp##SUFFIX(d * k[i]);\
       +                                m = c[i] * exp(d * k[i]);\
                                        img[i2][i] += clr[i1][i] * m;\
       -                                img[i2][3] += clr[i1][3] * m / blurred;\
       +                                img[i2][3] += clr[i1][3] * m / (TYPE)blurred;\
                                }\
                        }\
                }
       @@ -104,7 +100,7 @@ static size_t spread = 0;
                img[i1][2] = clr[i1][2];\
                img[i1][3] = clr[i1][3];
        
       -#define BLUR(TYPE, DIR, SETSTART, SETEND, START, LOOP, DISTANCE, SUFFIX)\
       +#define BLUR(TYPE, DIR, SETSTART, SETEND, START, LOOP, DISTANCE)\
                do {\
                        memset(img, 0, colour->frame_size);\
                        start = 0, end = colour->height;\
       @@ -117,14 +113,14 @@ static size_t spread = 0;
                                                SETSTART;\
                                                SETEND;\
                                        }\
       -                                BLUR_PIXEL(START, LOOP, DISTANCE, SUFFIX);\
       +                                BLUR_PIXEL(TYPE, START, LOOP, DISTANCE);\
                                        BLUR_PIXEL_EPILOGUE(DIR);\
                                }\
                        }\
                        ejoin_jobs(is_master, children);\
                } while (0)
        
       -#define PROCESS(TYPE, SUFFIX)\
       +#define PROCESS(TYPE)\
                do {\
                        typedef TYPE pixel_t[4];\
                        \
       @@ -226,8 +222,7 @@ static size_t spread = 0;
                                     x2end = spread + 1 > colour->width - x1 ? colour->width : x1 + spread + 1,\
                                     i2 = y1 * colour->width + x2start,\
                                     x2 = x2start; x2 < x2end; (x2++, i2++),\
       -                             (ssize_t)x1 - (ssize_t)x2,\
       -                             SUFFIX);\
       +                             (ssize_t)x1 - (ssize_t)x2);\
                        if (horizontal && vertical)\
                                memcpy(clr, img, colour->frame_size);\
                        if (vertical)\
       @@ -236,8 +231,7 @@ static size_t spread = 0;
                                     y2end = spread + 1 > colour->height - y1 ? colour->height : y1 + spread + 1,\
                                     i2 = y2start * colour->width + x1,\
                                     y2 = y2start; y2 < y2end; (y2++, i2 += colour->width),\
       -                             (ssize_t)y1 - (ssize_t)y2,\
       -                             SUFFIX);\
       +                             (ssize_t)y1 - (ssize_t)y2);\
                        \
                        start = 0, end = colour->height;\
                        is_master = efork_jobs(&start, &end, jobs, &children);\
       @@ -257,7 +251,7 @@ static size_t spread = 0;
                        i1 = start * colour->width;\
                        for (y1 = start; y1 < end; y1++) {\
                                for (x1 = 0; x1 < colour->width; x1++, i1++) {\
       -                                if (!img[i1][3])\
       +                                if (img[i1][3] != 0)\
                                                continue;\
                                        img[i1][0] /= img[i1][3];\
                                        img[i1][1] /= img[i1][3];\
       @@ -282,14 +276,14 @@ static void
        process_xyza(char *restrict output, char *restrict cbuf, char *restrict sbuf,
                     struct stream *colour, struct stream *sigma)
        {
       -        PROCESS(double,);
       +        PROCESS(double);
        }
        
        static void
        process_xyzaf(char *restrict output, char *restrict cbuf, char *restrict sbuf,
                     struct stream *colour, struct stream *sigma)
        {
       -        PROCESS(float, f);
       +        PROCESS(float);
        }
        
        int
   DIR diff --git a/src/blind-invert-luma.c b/src/blind-invert-luma.c
       @@ -1,8 +1,5 @@
        /* See LICENSE file for copyright and license details. */
       -#include "stream.h"
       -#include "util.h"
       -
       -#include <string.h>
       +#include "common.h"
        
        USAGE("[-iw] mask-stream")
        
   DIR diff --git a/src/blind-kernel.c b/src/blind-kernel.c
       @@ -1,13 +1,14 @@
        /* See LICENSE file for copyright and license details. */
       -#include "stream.h"
       -#include "util.h"
       +#include "common.h"
        
       -#include <math.h>
       -#include <string.h>
       +#if defined(__GNUC__) && !defined(__clang__)
       +# pragma GCC diagnostic push
       +# pragma GCC diagnostic ignored "-Wunsafe-loop-optimizations"
       +#endif
        
        USAGE("[-xyza] kernel [parameter] ...")
        
       -#define SUBUSAGE(FORMAT)          "Usage: %s [-xyza] " FORMAT, argv0
       +#define SUBUSAGE(FORMAT)          "usage: %s [-xyza] " FORMAT, argv0
        #define STRCASEEQ3(A, B1, B2, B3) (!strcasecmp(A, B1) || !strcasecmp(A, B2) || !strcasecmp(A, B3))
        
        #define LIST_KERNELS\
       @@ -110,6 +111,7 @@ kernel_sharpen(int argc, char *argv[], size_t *rows, size_t *cols, double **free
                *rows = *cols = 3;
        
        #define argv0 arg
       +        (void) arg;
                argc++, argv--;
                ARGBEGIN {
                case 'i':
       @@ -126,7 +128,6 @@ kernel_sharpen(int argc, char *argv[], size_t *rows, size_t *cols, double **free
        usage:
                eprintf(SUBUSAGE("'sharpen' [-i]"));
                return NULL;
       -        (void) arg;
        }
        
        static const double *
       @@ -156,7 +157,7 @@ kernel_gaussian(int argc, char *argv[], size_t *rows, size_t *cols, double **fre
                if (argc != 1)
                        goto usage;
        
       -        sigma = etof_arg("standard-deviation", argv[0]);
       +        sigma = etolf_arg("standard-deviation", argv[0]);
        
                if (!spread)
                        spread = (size_t)(sigma * 3.0 + 0.5);
       @@ -171,7 +172,7 @@ kernel_gaussian(int argc, char *argv[], size_t *rows, size_t *cols, double **fre
                k = 1.0 / -k;
        
                for (x = 0; x <= spread; x++) {
       -                value = spread - x;
       +                value = (double)(spread - x);
                        value *= value * k;
                        value = exp(value) * c;
                        for (y = 0; y < *rows; y++) {
       @@ -181,7 +182,7 @@ kernel_gaussian(int argc, char *argv[], size_t *rows, size_t *cols, double **fre
                }
        
                for (y = 0; y <= spread; y++) {
       -                value = spread - y;
       +                value = (double)(spread - y);
                        value *= value * k;
                        value = exp(value) * c;
                        for (x = 0; x < *cols; x++) {
   DIR diff --git a/src/blind-make-kernel.c b/src/blind-make-kernel.c
       @@ -1,9 +1,5 @@
        /* See LICENSE file for copyright and license details. */
       -#include "stream.h"
       -#include "util.h"
       -
       -#include <ctype.h>
       -#include <string.h>
       +#include "common.h"
        
        USAGE("[-d denominator] ... [-nxyza] [-- value ...] ...")
        
       @@ -58,7 +54,7 @@ static double *
        read_matrix_stdin(size_t *rows, size_t *cols)
        {
                char *line = NULL, *p, *q;
       -        size_t size = 0, col;
       +        size_t size = 0, col = 0;
                double *kernel = NULL;
                ssize_t len;
                *rows = *cols = 0;
   DIR diff --git a/src/blind-next-frame.c b/src/blind-next-frame.c
       @@ -1,8 +1,5 @@
        /* See LICENSE file for copyright and license details. */
       -#include "stream.h"
       -#include "util.h"
       -
       -#include <string.h>
       +#include "common.h"
        
        USAGE("[-f frames] width height pixel-format ...")
        
   DIR diff --git a/src/blind-read-head.c b/src/blind-read-head.c
       @@ -1,8 +1,5 @@
        /* See LICENSE file for copyright and license details. */
       -#include "stream.h"
       -#include "util.h"
       -
       -#include <ctype.h>
       +#include "common.h"
        
        USAGE("")
        
       @@ -50,5 +47,4 @@ main(int argc, char *argv[])
                return 0;
        bad_format:
                eprintf("<stdin>: file format not supported\n");
       -        return 0;
        }
   DIR diff --git a/src/blind-repeat.c b/src/blind-repeat.c
       @@ -1,8 +1,5 @@
        /* See LICENSE file for copyright and license details. */
       -#include "stream.h"
       -#include "util.h"
       -
       -#include <string.h>
       +#include "common.h"
        
        USAGE("(count | 'inf') file")
        
       @@ -14,8 +11,8 @@ static int
        repeat_regular_file(void)
        {
                while (inf || count--) {
       -                fadvise_sequential(stream.fd, stream.headlen, 0);
       -                elseek(stream.fd, stream.headlen, SEEK_SET, stream.file);
       +                fadvise_sequential(stream.fd, (off_t)(stream.headlen), 0);
       +                elseek(stream.fd, (off_t)(stream.headlen), SEEK_SET, stream.file);
                        if (esend_stream(&stream, STDOUT_FILENO, NULL))
                                return -1;
                }
   DIR diff --git a/src/blind-reverse.c b/src/blind-reverse.c
       @@ -1,6 +1,5 @@
        /* See LICENSE file for copyright and license details. */
       -#include "stream.h"
       -#include "util.h"
       +#include "common.h"
        
        USAGE("[-i] file")
        
       @@ -9,15 +8,15 @@ to_stdout(struct stream *stream)
        {
                size_t ptr, end, n;
                char buf[BUFSIZ];
       -        ssize_t r;
        
                while (stream->frames--) {
                        ptr = stream->frames * stream->frame_size + stream->headlen;
                        end = ptr + stream->frame_size;
                        while (ptr < end) {
       -                        if (!(r = epread(stream->fd, buf, MIN(sizeof(buf), end - ptr), ptr, stream->file)))
       +                        if (!(n = epread(stream->fd, buf, MIN(sizeof(buf), end - ptr),
       +                                         (off_t)ptr, stream->file)))
                                        eprintf("%s: file is shorter than expected\n", stream->file);
       -                        ptr += n = (size_t)r;
       +                        ptr += n;
                                ewriteall(STDOUT_FILENO, buf, n, "<stdout>");
                        }
                }
       @@ -57,8 +56,8 @@ in_place(struct stream *stream)
                bufb = emalloc(stream->frame_size);
        
                for (f = 0; f < stream->frames >> 1; f++) {
       -                pa = f        * stream->frame_size + stream->headlen;
       -                pb = (fm - f) * stream->frame_size + stream->headlen;
       +                pa = (off_t)f        * (off_t)(stream->frame_size) + (off_t)(stream->headlen);
       +                pb = (off_t)(fm - f) * (off_t)(stream->frame_size) + (off_t)(stream->headlen);
        
                        epread_frame(stream, bufa, pa);
                        epread_frame(stream, bufb, pb);
   DIR diff --git a/src/blind-rewrite-head.c b/src/blind-rewrite-head.c
       @@ -1,10 +1,5 @@
        /* See LICENSE file for copyright and license details. */
       -#include "stream.h"
       -#include "util.h"
       -
       -#include <sys/mman.h>
       -#include <sys/stat.h>
       -#include <string.h>
       +#include "common.h"
        
        USAGE("[-h] file [(frames | 'auto') [(width | 'same') (height | 'same') [format | 'same']]]")
        
       @@ -40,7 +35,7 @@ rewrite(struct stream *stream, int frames_auto)
                        eprintf("%s: video is too long\n", stream->file);
        
                if ((size_t)headlen > stream->headlen)
       -                if (ftruncate(stream->fd, length + headlen))
       +                if (ftruncate(stream->fd, (off_t)length + (off_t)headlen))
                                eprintf("ftruncate %s:", stream->file);
        
                data = mmap(0, length + (size_t)headlen, PROT_READ | PROT_WRITE, MAP_SHARED, stream->fd, 0);
       @@ -52,7 +47,7 @@ rewrite(struct stream *stream, int frames_auto)
                munmap(data, length + (size_t)headlen);
        
                if ((size_t)headlen < stream->headlen)
       -                if (ftruncate(stream->fd, length + headlen))
       +                if (ftruncate(stream->fd, (off_t)length + (off_t)headlen))
                                eprintf("ftruncate %s:", stream->file);
        }
        
   DIR diff --git a/src/blind-set-alpha.c b/src/blind-set-alpha.c
       @@ -1,8 +1,5 @@
        /* See LICENSE file for copyright and license details. */
       -#include "stream.h"
       -#include "util.h"
       -
       -#include <string.h>
       +#include "common.h"
        
        USAGE("[-i] alpha-stream")
        
   DIR diff --git a/src/blind-set-luma.c b/src/blind-set-luma.c
       @@ -1,8 +1,5 @@
        /* See LICENSE file for copyright and license details. */
       -#include "stream.h"
       -#include "util.h"
       -
       -#include <string.h>
       +#include "common.h"
        
        USAGE("luma-stream")
        
   DIR diff --git a/src/blind-set-saturation.c b/src/blind-set-saturation.c
       @@ -1,8 +1,5 @@
        /* See LICENSE file for copyright and license details. */
       -#include "stream.h"
       -#include "util.h"
       -
       -#include <string.h>
       +#include "common.h"
        
        USAGE("[-w] saturation-stream")
        
   DIR diff --git a/src/blind-single-colour.c b/src/blind-single-colour.c
       @@ -1,8 +1,5 @@
        /* See LICENSE file for copyright and license details. */
       -#include "stream.h"
       -#include "util.h"
       -
       -#include <string.h>
       +#include "common.h"
        
        USAGE("[-f frames | -f 'inf'] [-F pixel-format] -w width -h height (X Y Z | Y) [alpha]")
        
   DIR diff --git a/src/blind-skip-pattern.c b/src/blind-skip-pattern.c
       @@ -1,8 +1,5 @@
        /* See LICENSE file for copyright and license details. */
       -#include "stream.h"
       -#include "util.h"
       -
       -#include <string.h>
       +#include "common.h"
        
        USAGE("(skipped-frames | +included-frames) ...")
        
   DIR diff --git a/src/blind-split.c b/src/blind-split.c
       @@ -1,9 +1,5 @@
        /* See LICENSE file for copyright and license details. */
       -#include "stream.h"
       -#include "util.h"
       -
       -#include <alloca.h>
       -#include <string.h>
       +#include "common.h"
        
        USAGE("[-L] (file (end-point | 'end')) ...")
        
   DIR diff --git a/src/blind-stack.c b/src/blind-stack.c
       @@ -1,8 +1,5 @@
        /* See LICENSE file for copyright and license details. */
       -#include "stream.h"
       -#include "util.h"
       -
       -#include <string.h>
       +#include "common.h"
        
        USAGE("[-b] bottom-stream ... top-stream")
        
       @@ -22,7 +19,7 @@ USAGE("[-b] bottom-stream ... top-stream")
                                        z2 = ((TYPE *)(streams[j].buf + i))[2];\
                                        a2 = ((TYPE *)(streams[j].buf + i))[3];\
                                        if (BLEND)\
       -                                        a2 /= j + 1;\
       +                                        a2 /= (TYPE)(j + 1);\
                                        x1 = x1 * a1 * (1 - a2) + x2 * a2;\
                                        y1 = y1 * a1 * (1 - a2) + y2 * a2;\
                                        z1 = z1 * a1 * (1 - a2) + z2 * a2;\
   DIR diff --git a/src/blind-temporal-mean.c b/src/blind-temporal-mean.c
       @@ -1,9 +1,5 @@
        /* See LICENSE file for copyright and license details. */
       -#include "stream.h"
       -#include "util.h"
       -
       -#include <math.h>
       -#include <string.h>
       +#include "common.h"
        
        USAGE("[-g | -h | -l power | -p power]")
        /* TODO add -w weight-stream */
       @@ -21,23 +17,23 @@ typedef void (*process_func)(struct stream *stream, void *buffer, void *image, s
         * X-parameter 7: pre-finalise assignments
         * X-parameter 8: subcell finalisation
         */
       -#define LIST_MEANS(TYPE, SUFFIX)\
       +#define LIST_MEANS(TYPE)\
                /* [default] arithmetic mean */\
                X(ARITHMETIC, arithmetic, 1, COPY_FRAME,, *img1 += *buf,\
                  a = (TYPE)1.0 / (TYPE)frame, *img1 *= a)\
                /* geometric mean */\
                X(GEOMETRIC, geometric, 1, COPY_FRAME,, *img1 *= *buf,\
       -          a = (TYPE)1.0 / (TYPE)frame, *img1 = nnpow##SUFFIX(*img1, a))\
       +          a = (TYPE)1.0 / (TYPE)frame, *img1 = nnpow(*img1, a))\
                /* harmonic mean */\
                X(HARMONIC, harmonic, 1, ZERO_AND_PROCESS_FRAME,, *img1 += (TYPE)1 / *buf,\
                  a = (TYPE)frame, *img1 = a / *img1)\
                /* lehmer mean */\
                X(LEHMER, lehmer, 2, ZERO_AND_PROCESS_FRAME, (a = (TYPE)power, b = a - (TYPE)1),\
       -          (*img1 += nnpow##SUFFIX(*buf, a), *img2 += nnpow##SUFFIX(*buf, b)),, *img1 /= *img2)\
       +          (*img1 += nnpow(*buf, a), *img2 += nnpow(*buf, b)),, *img1 /= *img2)\
                /* power mean (Hölder mean) (m = 2 for root square mean; m = 3 for cubic mean) */\
                X(POWER, power, 1, ZERO_AND_PROCESS_FRAME, a = (TYPE)power,\
       -          *img1 += nnpow##SUFFIX(*buf, a), (a = (TYPE)1 / (TYPE)frame, b = (TYPE)(1.0 / power)),\
       -          *img1 = a * nnpow##SUFFIX(*img1, b))
       +          *img1 += nnpow(*buf, a), (a = (TYPE)1 / (TYPE)frame, b = (TYPE)(1.0 / power)),\
       +          *img1 = a * nnpow(*img1, b))
        
        enum first_frame_action {
                COPY_FRAME,
       @@ -46,28 +42,12 @@ enum first_frame_action {
        };
        
        #define X(V, ...) V,
       -enum method { LIST_MEANS(,) };
       +enum method { LIST_MEANS() };
        #undef X
        
        static double power;
        
       -static inline double
       -nnpow(double a, double b)
       -{
       -        int neg = a < 0;
       -        a = pow(neg ? -a : a, b);
       -        return neg ? -a : a;
       -}
       -
       -static inline float
       -nnpowf(float a, float b)
       -{
       -        int neg = a < 0;
       -        a = powf(neg ? -a : a, b);
       -        return neg ? -a : a;
       -}
       -
       -#define MAKE_PROCESS(PIXFMT, TYPE, SUFFIX,\
       +#define MAKE_PROCESS(PIXFMT, TYPE,\
                             _1, NAME, _3, _4, PRE_PROCESS, PROCESS_SUBCELL, PRE_FINALISE, FINALISE_SUBCELL)\
                static void\
                process_##PIXFMT##_##NAME(struct stream *stream, void *buffer, void *image, size_t frame)\
       @@ -86,22 +66,22 @@ nnpowf(float a, float b)
                                        for (x = 0; x < stream->width; x++, img1++, img2++, buf++)\
                                                PROCESS_SUBCELL;\
                        }\
       -                (void) img2, (void) a, (void) b;\
       +                (void) img2, (void) a, (void) b, (void) frame;\
                }
       -#define X(...) MAKE_PROCESS(xyza, double,, __VA_ARGS__)
       -LIST_MEANS(double,)
       +#define X(...) MAKE_PROCESS(xyza, double, __VA_ARGS__)
       +LIST_MEANS(double)
        #undef X
       -#define X(...) MAKE_PROCESS(xyzaf, float, f, __VA_ARGS__)
       -LIST_MEANS(float, f)
       +#define X(...) MAKE_PROCESS(xyzaf, float, __VA_ARGS__)
       +LIST_MEANS(float)
        #undef X
        #undef MAKE_PROCESS
        
        #define X(ID, NAME, ...) [ID] = process_xyza_##NAME,
       -static const process_func process_functions_xyza[] = { LIST_MEANS(,) };
       +static const process_func process_functions_xyza[] = { LIST_MEANS() };
        #undef X
        
        #define X(ID, NAME, ...) [ID] = process_xyzaf_##NAME,
       -static const process_func process_functions_xyzaf[] = { LIST_MEANS(,) };
       +static const process_func process_functions_xyzaf[] = { LIST_MEANS() };
        #undef X
        
        int
       @@ -142,7 +122,7 @@ main(int argc, char *argv[])
                        first_frame_action = FIRST_FRAME_ACTION;\
                        break;
                switch (method) {
       -        LIST_MEANS(,)
       +        LIST_MEANS()
                default:
                        abort();
                }
   DIR diff --git a/src/blind-time-blur.c b/src/blind-time-blur.c
       @@ -1,9 +1,5 @@
        /* See LICENSE file for copyright and license details. */
       -#include "stream.h"
       -#include "util.h"
       -
       -#include <string.h>
       -#include <unistd.h>
       +#include "common.h"
        
        USAGE("alpha-stream")
        
   DIR diff --git a/src/blind-to-image.c b/src/blind-to-image.c
       @@ -1,9 +1,5 @@
        /* See LICENSE file for copyright and license details. */
       -#include "stream.h"
       -#include "util.h"
       -
       -#include <arpa/inet.h>
       -#include <string.h>
       +#include "common.h"
        
        USAGE("[-d depth | -f]")
        
       @@ -13,7 +9,7 @@ static int alpha_warning_triggered = 0;
        static unsigned long long int max;
        static int bytes;
        
       -#define WRITE_PIXEL(TYPE, SUFFIX)\
       +#define WRITE_PIXEL(TYPE)\
                do {\
                        unsigned long long int colours[4];\
                        unsigned char buf[4 * 8];\
       @@ -38,10 +34,10 @@ static int bytes;
                                A = A < 0 ? 0 : 1;\
                        }\
                        \
       -                colours[0] = srgb_encode##SUFFIX(R) * max + (TYPE)0.5;\
       -                colours[1] = srgb_encode##SUFFIX(G) * max + (TYPE)0.5;\
       -                colours[2] = srgb_encode##SUFFIX(B) * max + (TYPE)0.5;\
       -                colours[3] = A * max + (TYPE)0.5;\
       +                colours[0] = (unsigned long long int)(srgb_encode(R) * (TYPE)max + (TYPE)0.5);\
       +                colours[1] = (unsigned long long int)(srgb_encode(G) * (TYPE)max + (TYPE)0.5);\
       +                colours[2] = (unsigned long long int)(srgb_encode(B) * (TYPE)max + (TYPE)0.5);\
       +                colours[3] = (unsigned long long int)(A * (TYPE)max + (TYPE)0.5);\
                        \
                        for (i = k = 0; i < 4; i++, k += bytes) {\
                                for (j = 0; j < bytes; j++) {\
       @@ -50,7 +46,7 @@ static int bytes;
                                }\
                        }\
                        \
       -                ewriteall(STDOUT_FILENO, buf, k, "<stdout>");\
       +                ewriteall(STDOUT_FILENO, buf, (size_t)k, "<stdout>");\
                } while (0)
        
        #define PROCESS(TYPE, SUFFIX)\
       @@ -71,15 +67,15 @@ static int bytes;
                                        }\
                                }\
                                \
       -                        ciexyz_to_srgb##SUFFIX(X, Y, Z, &R, &G, &B);\
       +                        ciexyz_to_srgb(X, Y, Z, &R, &G, &B);\
                                write_pixel##SUFFIX(R, G, B, A);\
                        }\
                } while (0)
        
       -static void write_pixel(double R, double G, double B, double A) {WRITE_PIXEL(double,);}
       -static void write_pixel_f(float R, float G, float B, float A) {WRITE_PIXEL(float, _f);}
       +static void write_pixel_d(double R, double G, double B, double A) {WRITE_PIXEL(double);}
       +static void write_pixel_f(float  R, float  G, float  B, float  A) {WRITE_PIXEL(float);}
        
       -static void process_xyza (struct stream *stream, size_t n) {PROCESS(double,);}
       +static void process_xyza (struct stream *stream, size_t n) {PROCESS(double, _d);}
        static void process_xyzaf(struct stream *stream, size_t n) {PROCESS(float, _f);}
        
        int
       @@ -117,7 +113,8 @@ main(int argc, char *argv[])
                        eprintf("pixel format %s is not supported, try xyza\n", stream.pixfmt);
        
                if (farbfeld) {
       -                uint32_t width = stream.width, height = stream.height;
       +                uint32_t width  = (uint32_t)(stream.width);
       +                uint32_t height = (uint32_t)(stream.height);
                        if (stream.width > UINT32_MAX)
                                eprintf("%s: frame is too wide\n", stream.file);
                        if (stream.height > UINT32_MAX)
   DIR diff --git a/src/blind-to-portable.c b/src/blind-to-portable.c
       @@ -1,17 +1,18 @@
        /* See LICENSE file for copyright and license details. */
       -#include "stream.h"
       -#include "util.h"
       +#include "common.h"
        
       -#include <alloca.h>
       -#include <math.h>
       -#include <string.h>
       +/* Disable warnings in <math.h> */
       +#if defined(__clang__)
       +# pragma clang diagnostic ignored "-Wdouble-promotion"
       +# pragma clang diagnostic ignored "-Wconversion"
       +#endif
        
        USAGE("[-s]")
        
        #define USING_BINARY32 0
        #define USING_BINARY64 0
        
       -#define CONV(ITYPE, OTYPE, SOTYPE, EXPONENT, HA2EXPONENT, FRACTION, SUFFIX)\
       +#define CONV(ITYPE, OTYPE, SOTYPE, EXPONENT, HA2EXPONENT, FRACTION)\
                do {\
                        static int cache_i = 0;\
                        static ITYPE cache_in[] = {0, 0, 0, 0};\
       @@ -24,22 +25,23 @@ USAGE("[-s]")
                                cache_i &= 3;\
                                return ret;\
                        }\
       -                signb = signbit(host);\
       +                cache_in[cache_i] = host;\
       +                signb = (OTYPE)signbit(host);\
                        u = signb ? -host : host;\
       -                if (isnan(host) || !isfinite(host)) {\
       -                        ret = ((((OTYPE)1 << EXPONENT) - 1) << FRACTION) | !isinf(host);\
       +                if (g_isnan(host) || g_isinf(host)) {\
       +                        ret = ((((OTYPE)1 << EXPONENT) - (OTYPE)1) << FRACTION) | (OTYPE)!g_isinf(host);\
                        } else if (u == (ITYPE)0.0) {\
                                ret = 0;\
                        } else {\
       -                        dexponent = log2##SUFFIX(u);\
       +                        dexponent = log2(u);\
                                exponent = (SOTYPE)dexponent;\
       -                        if (u == pow##SUFFIX(2.0, (ITYPE)exponent)) {\
       +                        if (u == pow((ITYPE)2.0, (ITYPE)exponent)) {\
                                        exponent += HA2EXPONENT;\
                                        fraction = 0;\
                                } else {\
                                        /* TODO subnormals are a bit rounded off */\
       -                                u *= pow##SUFFIX(2.0, (ITYPE)(FRACTION + 1 - exponent));\
       -                                fraction = u;\
       +                                u *= pow((ITYPE)2.0, (ITYPE)(FRACTION + 1 - exponent));\
       +                                fraction = (OTYPE)u;\
                                        while (fraction >= (OTYPE)2 << FRACTION) {\
                                                fraction >>= 1;\
                                                exponent += 1;\
       @@ -51,11 +53,11 @@ USAGE("[-s]")
                                        /* TODO subnormal result */\
                                        exponent = 0;\
                                        fraction = 0;\
       -                        } else if (exponent >= ((SOTYPE)1 << EXPONENT) - (SOTYPE)1) { \
       -                                exponent = ((SOTYPE)1 << EXPONENT) - (SOTYPE)1;\
       +                        } else if (exponent >= ((SOTYPE)1 << EXPONENT) - 1) { \
       +                                exponent = ((SOTYPE)1 << EXPONENT) - 1;\
                                        fraction = 0;\
                                }\
       -                        ret = (exponent << FRACTION) + fraction;\
       +                        ret = ((OTYPE)exponent << FRACTION) + fraction;\
                        }\
                        ret |= signb << (FRACTION + EXPONENT);\
                        cache_out[cache_i++] = ret;\
       @@ -89,8 +91,8 @@ USAGE("[-s]")
                                eprintf("%s: incomplete frame\n", stream->file);\
                } while (0)
        
       -static uint64_t conv_double(double host) {CONV(double, uint64_t, int64_t, 11, 1023, 52,);}
       -static uint32_t conv_float (float host)  {CONV(float, uint32_t, int32_t, 8, 127, 23, f);}
       +static uint64_t conv_double(double host) {CONV(double, uint64_t, int64_t, 11, 1023, 52);}
       +static uint32_t conv_float (float  host) {CONV(float, uint32_t, int32_t, 8, 127, 23);}
        
        static void process_xyza (struct stream *stream, int strict) {PROCESS(double, uint64_t, 64);}
        static void process_xyzaf(struct stream *stream, int strict) {PROCESS(float, uint32_t, 32);}
   DIR diff --git a/src/blind-to-text.c b/src/blind-to-text.c
       @@ -1,6 +1,5 @@
        /* See LICENSE file for copyright and license details. */
       -#include "stream.h"
       -#include "util.h"
       +#include "common.h"
        
        #include <string.h>
        
   DIR diff --git a/src/blind-to-video.c b/src/blind-to-video.c
       @@ -1,18 +1,12 @@
        /* See LICENSE file for copyright and license details. */
       -#include "stream.h"
       -#include "util.h"
       -
       -#include <signal.h>
       -#include <stdio.h>
       -#include <stdint.h>
       -#include <string.h>
       +#include "common.h"
        
        USAGE("[-d] frame-rate ffmpeg-arguments ...")
        
        static int draft = 0;
        static int fd;
        
       -#define PROCESS(TYPE, SUFFIX)\
       +#define PROCESS(TYPE)\
                do {\
                        char *buf = stream->buf;\
                        TYPE *pixel, r, g, b;\
       @@ -25,14 +19,14 @@ static int fd;
                        if (draft) {\
                                for (ptr = 0; ptr < n; ptr += 4 * sizeof(TYPE)) {\
                                        pixel = (TYPE *)(buf + ptr);\
       -                                ciexyz_to_scaled_yuv##SUFFIX(pixel[0], pixel[1], pixel[2], &r, &g, &b);\
       +                                ciexyz_to_scaled_yuv(pixel[0], pixel[1], pixel[2], &r, &g, &b);\
                                        y = (long int)r +  16L * 256L;\
                                        u = (long int)g + 128L * 256L;\
                                        v = (long int)b + 128L * 256L;\
                                        *pixels++ = 0xFFFFU;\
       -                                *pixels++ = htole16((uint16_t)CLIP(0, y, 0xFFFFL));\
       -                                *pixels++ = htole16((uint16_t)CLIP(0, u, 0xFFFFL));\
       -                                *pixels++ = htole16((uint16_t)CLIP(0, v, 0xFFFFL));\
       +                                *pixels++ = htole((uint16_t)CLIP(0, y, 0xFFFFL));\
       +                                *pixels++ = htole((uint16_t)CLIP(0, u, 0xFFFFL));\
       +                                *pixels++ = htole((uint16_t)CLIP(0, v, 0xFFFFL));\
                                        if (pixels == end)\
                                                ewriteall(fd, pixels = pixbuf, sizeof(pixbuf), "<subprocess>");\
                                }\
       @@ -40,18 +34,18 @@ static int fd;
                                for (ptr = 0; ptr < n; ptr += 4 * sizeof(TYPE)) {\
                                        pixel = (TYPE *)(buf + ptr);\
                                        a = (long int)(pixel[3] * 0xFFFFL);\
       -                                ciexyz_to_srgb##SUFFIX(pixel[0], pixel[1], pixel[2], &r, &g, &b);\
       -                                r = srgb_encode##SUFFIX(r);\
       -                                g = srgb_encode##SUFFIX(g);\
       -                                b = srgb_encode##SUFFIX(b);\
       -                                srgb_to_yuv##SUFFIX(r, g, b, pixel + 0, pixel + 1, pixel + 2);\
       +                                ciexyz_to_srgb(pixel[0], pixel[1], pixel[2], &r, &g, &b);\
       +                                r = srgb_encode(r);\
       +                                g = srgb_encode(g);\
       +                                b = srgb_encode(b);\
       +                                srgb_to_yuv(r, g, b, pixel + 0, pixel + 1, pixel + 2);\
                                        y = (long int)(pixel[0] * 0xFFFFL) +  16L * 256L;\
                                        u = (long int)(pixel[1] * 0xFFFFL) + 128L * 256L;\
                                        v = (long int)(pixel[2] * 0xFFFFL) + 128L * 256L;\
       -                                *pixels++ = htole16((uint16_t)CLIP(0, a, 0xFFFFL));\
       -                                *pixels++ = htole16((uint16_t)CLIP(0, y, 0xFFFFL));\
       -                                *pixels++ = htole16((uint16_t)CLIP(0, u, 0xFFFFL));\
       -                                *pixels++ = htole16((uint16_t)CLIP(0, v, 0xFFFFL));\
       +                                *pixels++ = htole((uint16_t)CLIP(0, a, 0xFFFFL));\
       +                                *pixels++ = htole((uint16_t)CLIP(0, y, 0xFFFFL));\
       +                                *pixels++ = htole((uint16_t)CLIP(0, u, 0xFFFFL));\
       +                                *pixels++ = htole((uint16_t)CLIP(0, v, 0xFFFFL));\
                                        if (pixels == end)\
                                                ewriteall(fd, pixels = pixbuf, sizeof(pixbuf), "<subprocess>");\
                                }\
       @@ -59,8 +53,8 @@ static int fd;
                        ewriteall(fd, pixbuf, (size_t)(pixels - pixbuf) * sizeof(*pixels), "<subprocess>");\
                } while (0)
        
       -static void process_xyza (struct stream *stream, size_t n) {PROCESS(double,);}
       -static void process_xyzaf(struct stream *stream, size_t n) {PROCESS(float, _f);}
       +static void process_xyza (struct stream *stream, size_t n) {PROCESS(double);}
       +static void process_xyzaf(struct stream *stream, size_t n) {PROCESS(float);}
        
        int
        main(int argc, char *argv[])
   DIR diff --git a/src/blind-translate.c b/src/blind-translate.c
       @@ -1,8 +1,5 @@
        /* See LICENSE file for copyright and license details. */
       -#include "stream.h"
       -#include "util.h"
       -
       -#include <string.h>
       +#include "common.h"
        
        USAGE("[-wp] translation-stream")
        
       @@ -59,7 +56,6 @@ process_frame(struct stream *stream, char *buf, size_t above, size_t below, size
                return 1;
        eof:
                eprintf("%s: file is shorter than expected\n", stream->file);
       -        return 0;
        }
        
        static void
   DIR diff --git a/src/blind-transpose.c b/src/blind-transpose.c
       @@ -1,6 +1,5 @@
        /* See LICENSE file for copyright and license details. */
       -#include "stream.h"
       -#include "util.h"
       +#include "common.h"
        
        USAGE("")
        
   DIR diff --git a/src/blind-write-head.c b/src/blind-write-head.c
       @@ -1,5 +1,5 @@
        /* See LICENSE file for copyright and license details. */
       -#include "util.h"
       +#include "common.h"
        
        USAGE("parameters ...")
        
   DIR diff --git a/src/common.h b/src/common.h
       @@ -0,0 +1,37 @@
       +/* See LICENSE file for copyright and license details. */
       +#if defined(__clang__)
       +# pragma clang diagnostic ignored "-Wdisabled-macro-expansion"
       +# pragma clang diagnostic ignored "-Wcomma"
       +# pragma clang diagnostic ignored "-Wcast-align"
       +# pragma clang diagnostic ignored "-Wassign-enum"
       +# pragma clang diagnostic ignored "-Wfloat-equal"
       +# pragma clang diagnostic ignored "-Wformat-nonliteral"
       +# pragma clang diagnostic ignored "-Wcovered-switch-default"
       +#elif defined(__GNUC__)
       +# pragma GCC diagnostic ignored "-Wfloat-equal"
       +#endif
       +
       +#include "stream.h"
       +#include "util.h"
       +#include "video-math.h"
       +
       +#include <arpa/inet.h>
       +#if defined(HAVE_EPOLL)
       +# include <sys/epoll.h>
       +#endif
       +#include <sys/mman.h>
       +#include <sys/stat.h>
       +#include <sys/wait.h>
       +#include <alloca.h>
       +#include <ctype.h>
       +#include <errno.h>
       +#include <fcntl.h>
       +#include <inttypes.h>
       +#include <limits.h>
       +#include <signal.h>
       +#include <stdarg.h>
       +#include <stdio.h>
       +#include <stdlib.h>
       +#include <string.h>
       +#include <strings.h>
       +#include <unistd.h>
   DIR diff --git a/src/stream.c b/src/stream.c
       @@ -1,14 +1,5 @@
        /* See LICENSE file for copyright and license details. */
       -#include "stream.h"
       -#include "util.h"
       -
       -#include <sys/mman.h>
       -#include <sys/stat.h>
       -#include <errno.h>
       -#include <inttypes.h>
       -#include <stdlib.h>
       -#include <string.h>
       -#include <unistd.h>
       +#include "common.h"
        
        static inline int
        get_dimension(int status, size_t *out, const char *s, const char *fname, const char *dim)
   DIR diff --git a/src/util.c b/src/util.c
       @@ -1,18 +1,5 @@
        /* See LICENSE file for copyright and license details. */
       -#include "util.h"
       -
       -#include <sys/wait.h>
       -#include <ctype.h>
       -#include <errno.h>
       -#include <fcntl.h>
       -#include <limits.h>
       -#include <signal.h>
       -#include <stdarg.h>
       -#include <stdio.h>
       -#include <stdlib.h>
       -#include <string.h>
       -#include <strings.h>
       -#include <unistd.h>
       +#include "common.h"
        
        char *argv0;
        
       @@ -139,17 +126,17 @@ readall(int fd, void *buf, size_t n)
        }
        
        int
       -pwriteall(int fd, void *buf, size_t n, size_t ptr)
       +pwriteall(int fd, void *buf, size_t n, off_t ptr)
        {
                char *buffer = buf;
                ssize_t r;
                while (n) {
       -                r = pwrite(fd, buffer, n, ptr);
       +                r = pwrite(fd, buffer, n, (off_t)ptr);
                        if (r < 0)
                                return -1;
                        buffer += (size_t)r;
                        n -= (size_t)r;
       -                ptr += (size_t)r;
       +                ptr += (off_t)r;
                }
                return 0;
        }
       @@ -171,7 +158,7 @@ getfile(int fd, void *buffer, size_t *restrict ptr, size_t *restrict size)
        {
                char *restrict *restrict buf = buffer;
                void *new;
       -        size_t r;
       +        ssize_t r;
        
                for (;;) {
                        if (*ptr == *size) {
   DIR diff --git a/src/util.h b/src/util.h
       @@ -1,6 +1,12 @@
        /* See LICENSE file for copyright and license details. */
        #include "arg.h"
        
       +#if defined(__GNUC__) || defined(__clang__)
       +# define ATTRIBUTE_NORETURN __attribute__((noreturn))
       +#else
       +# define ATTRIBUTE_NORETURN
       +#endif
       +
        #define ELEMENTSOF(ARRAY) (sizeof(ARRAY) / sizeof(*(ARRAY)))
        #define MIN(A, B)         ((A) < (B) ? (A) : (B))
        #define MAX(A, B)         ((A) > (B) ? (A) : (B))
       @@ -9,8 +15,9 @@
        #define INTSTRLEN(TYPE)   ((sizeof(TYPE) == 1 ? 3 : (5 * sizeof(TYPE) / 2)) + ((TYPE)-1 < 1))
        
        #define USAGE(SYNOPSIS)\
       +        ATTRIBUTE_NORETURN\
                static void usage(void)\
       -        { eprintf("usage: %s%s%s\n", argv0, SYNOPSIS ? " " : "", SYNOPSIS); }
       +        { eprintf("usage: %s%s%s\n", argv0, *SYNOPSIS ? " " : "", SYNOPSIS); }
        
        #include "util/eprintf.h"
        #include "util/efflush.h"
   DIR diff --git a/src/util/colour.h b/src/util/colour.h
       @@ -7,210 +7,118 @@
        #define D65_XYZ_X (D65_XYY_X / D65_XYY_Y)
        #define D65_XYZ_Z (1 / D65_XYY_Y - 1 - D65_XYZ_X)
        
       -static inline double
       -srgb_encode(double t)
       -{
       -        double sign = 1;
       -        if (t < 0) {
       -                t = -t;
       -                sign = -1;
       +#define SRGB_ENCODE(TYPE, NAME_SUFFIX, MATH_SUFFIX)\
       +        static inline TYPE\
       +        srgb_encode##NAME_SUFFIX(TYPE t)\
       +        {\
       +                TYPE sign = 1;\
       +                if (t < 0) {\
       +                        t = -t;\
       +                        sign = -1;\
       +                }\
       +                t = t <= (TYPE)0.0031306684425217108\
       +                        ? (TYPE)12.92 * t\
       +                        : (TYPE)1.055 * pow##MATH_SUFFIX(t, (TYPE)1.0 / (TYPE)2.4) - (TYPE)0.055;\
       +                return t * sign;\
                }
       -        t = t <= 0.0031306684425217108
       -                ? 12.92 * t
       -                : 1.055 * pow(t, 1 / 2.4) - 0.055;
       -        return t * sign;
       -}
       -
       -static inline float
       -srgb_encode_f(float t)
       -{
       -        float sign = 1;
       -        if (t < 0) {
       -                t = -t;
       -                sign = -1;
       -        }
       -        t = t <= (float)0.0031306684425217108
       -                ? (float)12.92 * t
       -                : (float)1.055 * powf(t, 1 / (float)2.4) - (float)0.055;
       -        return t * sign;
       -}
       -
       -static inline double
       -srgb_decode(double t)
       -{
       -        double sign = 1;
       -        if (t < 0) {
       -                t = -t;
       -                sign = -1;
       +SRGB_ENCODE(double, _d,)
       +SRGB_ENCODE(float, _f, f)
       +#undef SRGB_ENCODE
       +
       +#define SRGB_DECODE(TYPE, NAME_SUFFIX, MATH_SUFFIX)\
       +        static inline TYPE\
       +        srgb_decode##NAME_SUFFIX(TYPE t)\
       +        {\
       +                TYPE sign = 1;\
       +                if (t < 0) {\
       +                        t = -t;\
       +                        sign = -1;\
       +                }\
       +                t = t <= (TYPE)0.0031306684425217108 * (TYPE)12.92\
       +                        ? t / (TYPE)12.92\
       +                        : pow##MATH_SUFFIX((t + (TYPE)0.055) / (TYPE)1.055, (TYPE)2.4);\
       +                return t * sign;\
                }
       -        t = t <= 0.0031306684425217108 * 12.92
       -                ? t / 12.92
       -                : pow((t + 0.055) / 1.055, 2.4);
       -        return t * sign;
       -}
       -
       -static inline float
       -srgb_decode_f(float t)
       -{
       -        float sign = 1;
       -        if (t < 0) {
       -                t = -t;
       -                sign = -1;
       +SRGB_DECODE(double, _d,)
       +SRGB_DECODE(float, _f, f)
       +#undef SRGB_DECODE
       +
       +
       +#define MATRIX_MULTIPLY_FUNCTION(FUNCTION, TYPE, R1C1, R1C2, R1C3, R2C1, R2C2, R2C3, R3C1, R3C2, R3C3)\
       +        static inline void\
       +        FUNCTION(TYPE ia, TYPE ib, TYPE ic, TYPE *oa, TYPE *ob, TYPE *oc)\
       +        {\
       +                *oa = (TYPE)(R1C1) * ia + (TYPE)(R1C2) * ib + (TYPE)(R1C3) * ic;\
       +                *ob = (TYPE)(R2C1) * ia + (TYPE)(R2C2) * ib + (TYPE)(R2C3) * ic;\
       +                *oc = (TYPE)(R3C1) * ia + (TYPE)(R3C2) * ib + (TYPE)(R3C3) * ic;\
                }
       -        t = t <= (float)0.0031306684425217108 * (float)12.92
       -                ? t / (float)12.92
       -                : powf((t + (float)0.055) / (float)1.055, (float)2.4);
       -        return t * sign;
       -}
       -
       -static inline void
       -yuv_to_srgb(double y, double u, double v, double *r, double *g, double *b)
       -{
       -#define MULTIPLY(CY, CU, CV)  ((CY) * y + (CU) * u + (CV) * v)
       -        *r = MULTIPLY(1,  0.00028328010485821202317155420580263580632163211703,  1.14070449590558520291949662350816652178764343261719);
       -        *g = MULTIPLY(1, -0.39630886669497211727275498560629785060882568359375, -0.58107364288228224857846271333983168005943298339844);
       -        *b = MULTIPLY(1,  2.03990003507541306504435851820744574069976806640625,  0.00017179031692307700847528739718228507626918144524);
       -#undef MULTIPLY
       -}
       -
       -static inline void
       -yuv_to_srgb_f(float y, float u, float v, float *r, float *g, float *b)
       -{
       -#define MULTIPLY(CY, CU, CV)  ((float)(CY) * y + (float)(CU) * u + (float)(CV) * v)
       -        *r = MULTIPLY(1,  0.00028328010485821202317155420580263580632163211703,  1.14070449590558520291949662350816652178764343261719);
       -        *g = MULTIPLY(1, -0.39630886669497211727275498560629785060882568359375, -0.58107364288228224857846271333983168005943298339844);
       -        *b = MULTIPLY(1,  2.03990003507541306504435851820744574069976806640625,  0.00017179031692307700847528739718228507626918144524);
       -#undef MULTIPLY
       -}
       -
       -static inline void
       -srgb_to_yuv(double r, double g, double b, double *y, double *u, double *v)
       -{
       -#define MULTIPLY(CR, CG, CB) ((CR) * r + (CG) * g + (CB) * b)
       -        *y = MULTIPLY(0.299, 0.587, 0.114);
       -        *u = MULTIPLY(-0.14662756598240470062854967636667424812912940979004,
       -                      -0.28771586836102963635752871596196200698614120483398,
       -                       0.43434343434343436474165400795754976570606231689453);
       -        *v = MULTIPLY( 0.61456892577224520035628074765554629266262054443359,
       -                      -0.51452282157676354490405401520547457039356231689453,
       -                      -0.10004610419548178035231700278018251992762088775635);
       -#undef MULTIPLY
       -}
       -
       -static inline void
       -srgb_to_yuv_f(float r, float g, float b, float *y, float *u, float *v)
       -{
       -#define MULTIPLY(CR, CG, CB) ((float)(CR) * r + (float)(CG) * g + (float)(CB) * b)
       -        *y = MULTIPLY(0.299, 0.587, 0.114);
       -        *u = MULTIPLY(-0.14662756598240470062854967636667424812912940979004,
       -                      -0.28771586836102963635752871596196200698614120483398,
       -                       0.43434343434343436474165400795754976570606231689453);
       -        *v = MULTIPLY( 0.61456892577224520035628074765554629266262054443359,
       -                      -0.51452282157676354490405401520547457039356231689453,
       -                      -0.10004610419548178035231700278018251992762088775635);
       -#undef MULTIPLY
       -}
       -
       -static inline void
       -ciexyz_to_srgb(double x, double y, double z, double *r, double *g, double *b)
       -{
       -#define MULTIPLY(CX, CY, CZ)  ((CX) * x + (CY) * y + (CZ) * z)
       -        *r = MULTIPLY(3.240446254647737500675930277794, -1.537134761820080575134284117667, -0.498530193022728718155178739835);
       -        *g = MULTIPLY(-0.969266606244679751469561779231, 1.876011959788370209167851498933, 0.041556042214430065351304932619);
       -        *b = MULTIPLY(0.055643503564352832235773149705, -0.204026179735960239147729566866, 1.057226567722703292062647051353);
       -#undef MULTIPLY
       -}
       -
       -static inline void
       -ciexyz_to_srgb_f(float x, float y, float z, float *r, float *g, float *b)
       -{
       -#define MULTIPLY(CX, CY, CZ)  ((float)(CX) * x + (float)(CY) * y + (float)(CZ) * z)
       -        *r = MULTIPLY(3.240446254647737500675930277794, -1.537134761820080575134284117667, -0.498530193022728718155178739835);
       -        *g = MULTIPLY(-0.969266606244679751469561779231, 1.876011959788370209167851498933, 0.041556042214430065351304932619);
       -        *b = MULTIPLY(0.055643503564352832235773149705, -0.204026179735960239147729566866, 1.057226567722703292062647051353);
       -#undef MULTIPLY
       -}
       -
       -static inline void
       -srgb_to_ciexyz(double r, double g, double b, double *x, double *y, double *z)
       -{
       -#define MULTIPLY(CR, CG, CB) ((CR) * r + (CG) * g + (CB) * b)
       -        *x = MULTIPLY(0.412457445582367576708548995157, 0.357575865245515878143578447634, 0.180437247826399665973085006954);
       -        *y = MULTIPLY(0.212673370378408277403536885686, 0.715151730491031756287156895269, 0.072174899130559869164791564344);
       -        *z = MULTIPLY(0.019333942761673460208893260415, 0.119191955081838593666354597644, 0.950302838552371742508739771438);
       -#undef MULTIPLY
       -}
       -
       -static inline void
       -srgb_to_ciexyz_f(float r, float g, float b, float *x, float *y, float *z)
       -{
       -#define MULTIPLY(CR, CG, CB) ((float)(CR) * r + (float)(CG) * g + (float)(CB) * b)
       -        *x = MULTIPLY(0.412457445582367576708548995157, 0.357575865245515878143578447634, 0.180437247826399665973085006954);
       -        *y = MULTIPLY(0.212673370378408277403536885686, 0.715151730491031756287156895269, 0.072174899130559869164791564344);
       -        *z = MULTIPLY(0.019333942761673460208893260415, 0.119191955081838593666354597644, 0.950302838552371742508739771438);
       -#undef MULTIPLY
       -}
       -
       -static inline void
       -scaled_yuv_to_ciexyz(double y, double u, double v, double *xp, double *yp, double *zp)
       -{
       -#define MULTIPLY(CY, CU, CV) ((CY) * y + (CU) * u + (CV) * v)
       -        *xp = MULTIPLY( 0.00001450325106667098632156481796684488472237717360,
       -                        0.00000345586790639342739093228633329157872822179343,
       -                        0.00000400923398630552893485111398685916128670214675);
       -        *yp = MULTIPLY( 0.00001525902189669641837040624243737596543724066578,
       -                       -0.00000207722814409390653614547427030512238843584782,
       -                       -0.00000263898607692305410302407824019166326934282552);
       -        *zp = MULTIPLY( 0.00001661446153041708825425643025752719950105529279,
       -                        0.00002885925752619118069149627137104374696718878113,
       -                        -0.00000071781086875769179526501342566979779746816348);
       -#undef MULTIPLY
       -}
       -
       -static inline void
       -scaled_yuv_to_ciexyz_f(float y, float u, float v, float *xp, float *yp, float *zp)
       -{
       -#define MULTIPLY(CY, CU, CV) ((float)(CY) * y + (float)(CU) * u + (float)(CV) * v)
       -        *xp = MULTIPLY( 0.00001450325106667098632156481796684488472237717360,
       -                        0.00000345586790639342739093228633329157872822179343,
       -                        0.00000400923398630552893485111398685916128670214675);
       -        *yp = MULTIPLY( 0.00001525902189669641837040624243737596543724066578,
       -                       -0.00000207722814409390653614547427030512238843584782,
       -                       -0.00000263898607692305410302407824019166326934282552);
       -        *zp = MULTIPLY( 0.00001661446153041708825425643025752719950105529279,
       -                        0.00002885925752619118069149627137104374696718878113,
       -                        -0.00000071781086875769179526501342566979779746816348);
       -#undef MULTIPLY
       -}
       -
       -static inline void
       -ciexyz_to_scaled_yuv(double x, double y, double z, double *yp, double *up, double *vp)
       -{
       -#define MULTIPLY(CX, CY, CZ) ((CX) * x + (CY) * y + (CZ) * z)
       -        *yp = MULTIPLY(  26625.38231027395886485464870929718017578125,
       -                         40524.0090949436053051613271236419677734375,
       -                          -271.5313105642117079696618020534515380859375);
       -        *up = MULTIPLY( -11278.3751445417292416095733642578125,
       -                        -26409.91773157499847002327442169189453125,
       -                         34100.5706543184860493056476116180419921875);
       -        *vp = MULTIPLY( 162829.60100012840121053159236907958984375,
       -                       -123829.313212639070115983486175537109375,
       -                        -28411.65702312920984695665538311004638671875);
       -#undef MULTIPLY
       -}
       -
       -static inline void
       -ciexyz_to_scaled_yuv_f(float x, float y, float z, float *yp, float *up, float *vp)
       -{
       -#define MULTIPLY(CX, CY, CZ) ((float)(CX) * x + (float)(CY) * y + (float)(CZ) * z)
       -        *yp = MULTIPLY(  26625.38231027395886485464870929718017578125,
       -                         40524.0090949436053051613271236419677734375,
       -                          -271.5313105642117079696618020534515380859375);
       -        *up = MULTIPLY( -11278.3751445417292416095733642578125,
       -                        -26409.91773157499847002327442169189453125,
       -                         34100.5706543184860493056476116180419921875);
       -        *vp = MULTIPLY( 162829.60100012840121053159236907958984375,
       -                       -123829.313212639070115983486175537109375,
       -                        -28411.65702312920984695665538311004638671875);
       -#undef MULTIPLY
       -}
       +#define MATRIX_MULTIPLY_FUNCTIONS(FUNCTION_BASE, ...)\
       +        MATRIX_MULTIPLY_FUNCTION(FUNCTION_BASE##_d, double, __VA_ARGS__)\
       +        MATRIX_MULTIPLY_FUNCTION(FUNCTION_BASE##_f, float,  __VA_ARGS__)
       +
       +MATRIX_MULTIPLY_FUNCTIONS(yuv_to_srgb,
       +                          1,
       +                          0.00028328010485821202317155420580263580632163211703,
       +                          1.14070449590558520291949662350816652178764343261719,
       +                          1,
       +                          -0.39630886669497211727275498560629785060882568359375,
       +                          -0.58107364288228224857846271333983168005943298339844,
       +                          1,
       +                          2.03990003507541306504435851820744574069976806640625,
       +                          0.00017179031692307700847528739718228507626918144524)
       +
       +MATRIX_MULTIPLY_FUNCTIONS(srgb_to_yuv,
       +                          0.299, 0.587, 0.114,
       +                          -0.14662756598240470062854967636667424812912940979004,
       +                          -0.28771586836102963635752871596196200698614120483398,
       +                           0.43434343434343436474165400795754976570606231689453,
       +                           0.61456892577224520035628074765554629266262054443359,
       +                          -0.51452282157676354490405401520547457039356231689453,
       +                          -0.10004610419548178035231700278018251992762088775635)
       +
       +MATRIX_MULTIPLY_FUNCTIONS(ciexyz_to_srgb,
       +                           3.240446254647737500675930277794,
       +                          -1.537134761820080575134284117667,
       +                          -0.498530193022728718155178739835,
       +                          -0.969266606244679751469561779231,
       +                           1.876011959788370209167851498933,
       +                           0.041556042214430065351304932619,
       +                           0.055643503564352832235773149705,
       +                          -0.204026179735960239147729566866,
       +                           1.057226567722703292062647051353)
       +
       +MATRIX_MULTIPLY_FUNCTIONS(srgb_to_ciexyz,
       +                          0.412457445582367576708548995157,
       +                          0.357575865245515878143578447634,
       +                          0.180437247826399665973085006954,
       +                          0.212673370378408277403536885686,
       +                          0.715151730491031756287156895269,
       +                          0.072174899130559869164791564344,
       +                          0.019333942761673460208893260415,
       +                          0.119191955081838593666354597644,
       +                          0.950302838552371742508739771438)
       +
       +MATRIX_MULTIPLY_FUNCTIONS(scaled_yuv_to_ciexyz,
       +                           0.00001450325106667098632156481796684488472237717360,
       +                           0.00000345586790639342739093228633329157872822179343,
       +                           0.00000400923398630552893485111398685916128670214675,
       +                           0.00001525902189669641837040624243737596543724066578,
       +                          -0.00000207722814409390653614547427030512238843584782,
       +                          -0.00000263898607692305410302407824019166326934282552,
       +                           0.00001661446153041708825425643025752719950105529279,
       +                           0.00002885925752619118069149627137104374696718878113,
       +                          -0.00000071781086875769179526501342566979779746816348)
       +
       +MATRIX_MULTIPLY_FUNCTIONS(ciexyz_to_scaled_yuv,
       +                            26625.38231027395886485464870929718017578125,
       +                            40524.0090949436053051613271236419677734375,
       +                             -271.5313105642117079696618020534515380859375,
       +                           -11278.3751445417292416095733642578125,
       +                           -26409.91773157499847002327442169189453125,
       +                            34100.5706543184860493056476116180419921875,
       +                           162829.60100012840121053159236907958984375,
       +                          -123829.313212639070115983486175537109375,
       +                           -28411.65702312920984695665538311004638671875)
       +
       +#undef MATRIX_MULTIPLY_FUNCTIONS
       +#undef MATRIX_MULTIPLY_FUNCTION
   DIR diff --git a/src/util/io.h b/src/util/io.h
       @@ -40,10 +40,10 @@ enreadall(int status, int fd, void *buf, size_t n, const char *fname)
                return (size_t)r;
        }
        
       -int pwriteall(int fd, void *buf, size_t n, size_t ptr);
       +int pwriteall(int fd, void *buf, size_t n, off_t ptr);
        
        static inline void
       -enpwriteall(int status, int fd, void *buf, size_t n, size_t ptr, const char *fname)
       +enpwriteall(int status, int fd, void *buf, size_t n, off_t ptr, const char *fname)
        {
                if (pwriteall(fd, buf, n, ptr))
                        enprintf(status, "pwrite %s:", fname);
   DIR diff --git a/src/video-math.h b/src/video-math.h
       @@ -0,0 +1,90 @@
       +/* See LICENSE file for copyright and license details. */
       +#include <math.h>
       +
       +static inline double
       +nnpow(double a, double b)
       +{
       +        int neg = a < 0;
       +        a = pow(neg ? -a : a, b);
       +        return neg ? -a : a;
       +}
       +
       +static inline float
       +nnpowf(float a, float b)
       +{
       +        int neg = a < 0;
       +        a = powf(neg ? -a : a, b);
       +        return neg ? -a : a;
       +}
       +
       +#define GENERIC(TYPE, FUNC, ...)\
       +        TYPE:           FUNC(__VA_ARGS__),\
       +        TYPE *:         FUNC(__VA_ARGS__),\
       +        TYPE **:        FUNC(__VA_ARGS__),\
       +        TYPE ***:       FUNC(__VA_ARGS__),\
       +        const TYPE:     FUNC(__VA_ARGS__),\
       +        const TYPE *:   FUNC(__VA_ARGS__),\
       +        const TYPE **:  FUNC(__VA_ARGS__),\
       +        const TYPE ***: FUNC(__VA_ARGS__)
       +
       +#define MATH_GENERIC_1(FUNC, A)       (_Generic((A),\
       +                                                GENERIC(double, FUNC,    A),\
       +                                                GENERIC(float,  FUNC##f, A)))
       +
       +#define MATH_GENERIC_N(FUNC, A, ...)  (_Generic((A),\
       +                                                GENERIC(double, FUNC,    A, __VA_ARGS__),\
       +                                                GENERIC(float,  FUNC##f, A, __VA_ARGS__)))
       +
       +#define BLIND_GENERIC_1(FUNC, A)      (_Generic((A),\
       +                                                GENERIC(double, FUNC##_d, A),\
       +                                                GENERIC(float,  FUNC##_f, A)))
       +
       +#define BLIND_GENERIC_N(FUNC, A, ...) (_Generic((A),\
       +                                                GENERIC(double, FUNC##_d, A, __VA_ARGS__), \
       +                                                GENERIC(float,  FUNC##_f, A, __VA_ARGS__)))
       +
       +#define pow(...)         MATH_GENERIC_N(pow,      __VA_ARGS__)
       +#define log2(...)        MATH_GENERIC_1(log2,     __VA_ARGS__)
       +#define abs(...)         MATH_GENERIC_1(fabs,     __VA_ARGS__)
       +#define sqrt(...)        MATH_GENERIC_1(sqrt,     __VA_ARGS__)
       +#define exp(...)         MATH_GENERIC_1(exp,      __VA_ARGS__)
       +#define g_isnan(...)     MATH_GENERIC_1(isnan,    __VA_ARGS__)
       +#define g_isinf(...)     MATH_GENERIC_1(isinf,    __VA_ARGS__)
       +#define g_isfinite(...)  MATH_GENERIC_1(isfinite, __VA_ARGS__)
       +#define nnpow(...)       MATH_GENERIC_N(nnpow,    __VA_ARGS__)
       +
       +#define srgb_encode(...) BLIND_GENERIC_1(srgb_encode, __VA_ARGS__)
       +#define srgb_decode(...) BLIND_GENERIC_1(srgb_decode, __VA_ARGS__)
       +
       +#define yuv_to_srgb(a, b, c, d, e, f)\
       +        BLIND_GENERIC_N(yuv_to_srgb, (a), (b), (c), (void *)(d), (void *)(e), (void *)(f))
       +#define srgb_to_yuv(a, b, c, d, e, f)\
       +        BLIND_GENERIC_N(srgb_to_yuv, (a), (b), (c), (void *)(d), (void *)(e), (void *)(f))
       +#define ciexyz_to_srgb(a, b, c, d, e, f)\
       +        BLIND_GENERIC_N(ciexyz_to_srgb, (a), (b), (c), (void *)(d), (void *)(e), (void *)(f))
       +#define srgb_to_ciexyz(a, b, c, d, e, f)\
       +        BLIND_GENERIC_N(srgb_to_ciexyz, (a), (b), (c), (void *)(d), (void *)(e), (void *)(f))
       +#define scaled_yuv_to_ciexyz(a, b, c, d, e, f)\
       +        BLIND_GENERIC_N(scaled_yuv_to_ciexyz, (a), (b), (c), (void *)(d), (void *)(e), (void *)(f))
       +#define ciexyz_to_scaled_yuv(a, b, c, d, e, f)\
       +        BLIND_GENERIC_N(ciexyz_to_scaled_yuv, (a), (b), (c), (void *)(d), (void *)(e), (void *)(f))
       +
       +#define htole(A) (_Generic((A),\
       +                           uint8_t: (A),\
       +                            int8_t: (uint8_t)(A),\
       +                           uint16_t: htole16(A),\
       +                            int16_t: (uint16_t)htole16((uint16_t)(A)),\
       +                           uint32_t: htole32(A),\
       +                            int32_t: (uint32_t)htole32((uint32_t)(A)),\
       +                           uint64_t: htole64(A),\
       +                            int64_t: (uint64_t)htole64((uint64_t)(A))))
       +
       +#define letoh(A) (_Generic((A),\
       +                           uint8_t: (A),\
       +                            int8_t: (uint8_t)(A),\
       +                           uint16_t: le16toh(A),\
       +                            int16_t: (uint16_t)le16toh((uint16_t)(A)),\
       +                           uint32_t: le32toh(A),\
       +                            int32_t: (uint32_t)le32toh((uint32_t)(A)),\
       +                           uint64_t: le64toh(A),\
       +                            int64_t: (uint64_t)le64toh((uint64_t)(A))))