899 lines
28 KiB
C
899 lines
28 KiB
C
/*
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* Image format
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* Copyright (c) 2000, 2001, 2002 Fabrice Bellard
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* Copyright (c) 2004 Michael Niedermayer
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*
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* This file is part of FFmpeg.
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*
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* FFmpeg is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* FFmpeg is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with FFmpeg; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#define _DEFAULT_SOURCE
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#define _BSD_SOURCE
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#include <sys/stat.h>
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#include "libavutil/avstring.h"
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#include "libavutil/log.h"
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#include "libavutil/opt.h"
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#include "libavutil/pixdesc.h"
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#include "libavutil/parseutils.h"
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#include "libavutil/intreadwrite.h"
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#include "avformat.h"
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#include "avio_internal.h"
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#include "internal.h"
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#include "img2.h"
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#include "libavcodec/mjpeg.h"
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#if HAVE_GLOB
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/* Locally define as 0 (bitwise-OR no-op) any missing glob options that
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are non-posix glibc/bsd extensions. */
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#ifndef GLOB_NOMAGIC
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#define GLOB_NOMAGIC 0
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#endif
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#ifndef GLOB_BRACE
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#define GLOB_BRACE 0
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#endif
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#endif /* HAVE_GLOB */
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static const int sizes[][2] = {
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{ 640, 480 },
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{ 720, 480 },
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{ 720, 576 },
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{ 352, 288 },
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{ 352, 240 },
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{ 160, 128 },
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{ 512, 384 },
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{ 640, 352 },
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{ 640, 240 },
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};
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static int infer_size(int *width_ptr, int *height_ptr, int size)
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{
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int i;
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for (i = 0; i < FF_ARRAY_ELEMS(sizes); i++) {
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if ((sizes[i][0] * sizes[i][1]) == size) {
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*width_ptr = sizes[i][0];
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*height_ptr = sizes[i][1];
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return 0;
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}
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}
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return -1;
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}
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static int is_glob(const char *path)
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{
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#if HAVE_GLOB
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size_t span = 0;
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const char *p = path;
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while (p = strchr(p, '%')) {
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if (*(++p) == '%') {
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++p;
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continue;
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}
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if (span = strspn(p, "*?[]{}"))
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break;
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}
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/* Did we hit a glob char or get to the end? */
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return span != 0;
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#else
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return 0;
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#endif
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}
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/**
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* Get index range of image files matched by path.
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*
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* @param pfirst_index pointer to index updated with the first number in the range
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* @param plast_index pointer to index updated with the last number in the range
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* @param path path which has to be matched by the image files in the range
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* @param start_index minimum accepted value for the first index in the range
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* @return -1 if no image file could be found
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*/
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static int find_image_range(AVIOContext *pb, int *pfirst_index, int *plast_index,
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const char *path, int start_index, int start_index_range)
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{
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char buf[1024];
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int range, last_index, range1, first_index;
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/* find the first image */
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for (first_index = start_index; first_index < start_index + start_index_range; first_index++) {
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if (av_get_frame_filename(buf, sizeof(buf), path, first_index) < 0) {
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*pfirst_index =
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*plast_index = 1;
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if (pb || avio_check(buf, AVIO_FLAG_READ) > 0)
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return 0;
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return -1;
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}
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if (avio_check(buf, AVIO_FLAG_READ) > 0)
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break;
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}
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if (first_index == start_index + start_index_range)
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goto fail;
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/* find the last image */
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last_index = first_index;
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for (;;) {
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range = 0;
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for (;;) {
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if (!range)
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range1 = 1;
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else
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range1 = 2 * range;
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if (av_get_frame_filename(buf, sizeof(buf), path,
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last_index + range1) < 0)
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goto fail;
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if (avio_check(buf, AVIO_FLAG_READ) <= 0)
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break;
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range = range1;
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/* just in case... */
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if (range >= (1 << 30))
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goto fail;
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}
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/* we are sure than image last_index + range exists */
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if (!range)
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break;
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last_index += range;
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}
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*pfirst_index = first_index;
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*plast_index = last_index;
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return 0;
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fail:
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return -1;
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}
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static int img_read_probe(AVProbeData *p)
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{
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if (p->filename && ff_guess_image2_codec(p->filename)) {
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if (av_filename_number_test(p->filename))
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return AVPROBE_SCORE_MAX;
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else if (is_glob(p->filename))
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return AVPROBE_SCORE_MAX;
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else if (p->filename[strcspn(p->filename, "*?{")]) // probably PT_GLOB
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return AVPROBE_SCORE_EXTENSION + 2; // score chosen to be a tad above the image pipes
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else if (p->buf_size == 0)
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return 0;
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else if (av_match_ext(p->filename, "raw") || av_match_ext(p->filename, "gif"))
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return 5;
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else
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return AVPROBE_SCORE_EXTENSION;
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}
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return 0;
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}
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int ff_img_read_header(AVFormatContext *s1)
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{
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VideoDemuxData *s = s1->priv_data;
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int first_index = 1, last_index = 1;
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AVStream *st;
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enum AVPixelFormat pix_fmt = AV_PIX_FMT_NONE;
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s1->ctx_flags |= AVFMTCTX_NOHEADER;
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st = avformat_new_stream(s1, NULL);
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if (!st) {
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return AVERROR(ENOMEM);
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}
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if (s->pixel_format &&
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(pix_fmt = av_get_pix_fmt(s->pixel_format)) == AV_PIX_FMT_NONE) {
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av_log(s1, AV_LOG_ERROR, "No such pixel format: %s.\n",
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s->pixel_format);
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return AVERROR(EINVAL);
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}
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av_strlcpy(s->path, s1->filename, sizeof(s->path));
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s->img_number = 0;
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s->img_count = 0;
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/* find format */
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if (s1->iformat->flags & AVFMT_NOFILE)
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s->is_pipe = 0;
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else {
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s->is_pipe = 1;
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st->need_parsing = AVSTREAM_PARSE_FULL;
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}
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if (s->ts_from_file == 2) {
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#if !HAVE_STRUCT_STAT_ST_MTIM_TV_NSEC
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av_log(s1, AV_LOG_ERROR, "POSIX.1-2008 not supported, nanosecond file timestamps unavailable\n");
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return AVERROR(ENOSYS);
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#endif
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avpriv_set_pts_info(st, 64, 1, 1000000000);
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} else if (s->ts_from_file)
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avpriv_set_pts_info(st, 64, 1, 1);
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else
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avpriv_set_pts_info(st, 64, s->framerate.den, s->framerate.num);
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if (s->width && s->height) {
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st->codecpar->width = s->width;
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st->codecpar->height = s->height;
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}
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if (!s->is_pipe) {
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if (s->pattern_type == PT_DEFAULT) {
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if (s1->pb) {
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s->pattern_type = PT_NONE;
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} else
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s->pattern_type = PT_GLOB_SEQUENCE;
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}
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if (s->pattern_type == PT_GLOB_SEQUENCE) {
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s->use_glob = is_glob(s->path);
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if (s->use_glob) {
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#if HAVE_GLOB
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char *p = s->path, *q, *dup;
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int gerr;
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#endif
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av_log(s1, AV_LOG_WARNING, "Pattern type 'glob_sequence' is deprecated: "
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"use pattern_type 'glob' instead\n");
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#if HAVE_GLOB
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dup = q = av_strdup(p);
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while (*q) {
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/* Do we have room for the next char and a \ insertion? */
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if ((p - s->path) >= (sizeof(s->path) - 2))
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break;
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if (*q == '%' && strspn(q + 1, "%*?[]{}"))
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++q;
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else if (strspn(q, "\\*?[]{}"))
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*p++ = '\\';
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*p++ = *q++;
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}
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*p = 0;
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av_free(dup);
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gerr = glob(s->path, GLOB_NOCHECK|GLOB_BRACE|GLOB_NOMAGIC, NULL, &s->globstate);
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if (gerr != 0) {
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return AVERROR(ENOENT);
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}
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first_index = 0;
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last_index = s->globstate.gl_pathc - 1;
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#endif
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}
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}
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if ((s->pattern_type == PT_GLOB_SEQUENCE && !s->use_glob) || s->pattern_type == PT_SEQUENCE) {
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if (find_image_range(s1->pb, &first_index, &last_index, s->path,
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s->start_number, s->start_number_range) < 0) {
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av_log(s1, AV_LOG_ERROR,
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"Could find no file with path '%s' and index in the range %d-%d\n",
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s->path, s->start_number, s->start_number + s->start_number_range - 1);
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return AVERROR(ENOENT);
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}
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} else if (s->pattern_type == PT_GLOB) {
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#if HAVE_GLOB
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int gerr;
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gerr = glob(s->path, GLOB_NOCHECK|GLOB_BRACE|GLOB_NOMAGIC, NULL, &s->globstate);
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if (gerr != 0) {
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return AVERROR(ENOENT);
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}
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first_index = 0;
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last_index = s->globstate.gl_pathc - 1;
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s->use_glob = 1;
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#else
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av_log(s1, AV_LOG_ERROR,
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"Pattern type 'glob' was selected but globbing "
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"is not supported by this libavformat build\n");
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return AVERROR(ENOSYS);
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#endif
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} else if (s->pattern_type != PT_GLOB_SEQUENCE && s->pattern_type != PT_NONE) {
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av_log(s1, AV_LOG_ERROR,
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"Unknown value '%d' for pattern_type option\n", s->pattern_type);
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return AVERROR(EINVAL);
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}
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s->img_first = first_index;
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s->img_last = last_index;
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s->img_number = first_index;
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/* compute duration */
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if (!s->ts_from_file) {
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st->start_time = 0;
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st->duration = last_index - first_index + 1;
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}
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}
|
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|
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if (s1->video_codec_id) {
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st->codecpar->codec_type = AVMEDIA_TYPE_VIDEO;
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st->codecpar->codec_id = s1->video_codec_id;
|
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} else if (s1->audio_codec_id) {
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st->codecpar->codec_type = AVMEDIA_TYPE_AUDIO;
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st->codecpar->codec_id = s1->audio_codec_id;
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} else if (s1->iformat->raw_codec_id) {
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st->codecpar->codec_type = AVMEDIA_TYPE_VIDEO;
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st->codecpar->codec_id = s1->iformat->raw_codec_id;
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} else {
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const char *str = strrchr(s->path, '.');
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s->split_planes = str && !av_strcasecmp(str + 1, "y");
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st->codecpar->codec_type = AVMEDIA_TYPE_VIDEO;
|
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if (s1->pb) {
|
|
int probe_buffer_size = 2048;
|
|
uint8_t *probe_buffer = av_realloc(NULL, probe_buffer_size + AVPROBE_PADDING_SIZE);
|
|
AVInputFormat *fmt = NULL;
|
|
AVProbeData pd = { 0 };
|
|
|
|
if (!probe_buffer)
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return AVERROR(ENOMEM);
|
|
|
|
probe_buffer_size = avio_read(s1->pb, probe_buffer, probe_buffer_size);
|
|
if (probe_buffer_size < 0) {
|
|
av_free(probe_buffer);
|
|
return probe_buffer_size;
|
|
}
|
|
memset(probe_buffer + probe_buffer_size, 0, AVPROBE_PADDING_SIZE);
|
|
|
|
pd.buf = probe_buffer;
|
|
pd.buf_size = probe_buffer_size;
|
|
pd.filename = s1->filename;
|
|
|
|
while ((fmt = av_iformat_next(fmt))) {
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|
if (fmt->read_header != ff_img_read_header ||
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!fmt->read_probe ||
|
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(fmt->flags & AVFMT_NOFILE) ||
|
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!fmt->raw_codec_id)
|
|
continue;
|
|
if (fmt->read_probe(&pd) > 0) {
|
|
st->codecpar->codec_id = fmt->raw_codec_id;
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break;
|
|
}
|
|
}
|
|
if (s1->flags & AVFMT_FLAG_CUSTOM_IO) {
|
|
avio_seek(s1->pb, 0, SEEK_SET);
|
|
} else
|
|
ffio_rewind_with_probe_data(s1->pb, &probe_buffer, probe_buffer_size);
|
|
}
|
|
if (st->codecpar->codec_id == AV_CODEC_ID_NONE)
|
|
st->codecpar->codec_id = ff_guess_image2_codec(s->path);
|
|
if (st->codecpar->codec_id == AV_CODEC_ID_LJPEG)
|
|
st->codecpar->codec_id = AV_CODEC_ID_MJPEG;
|
|
if (st->codecpar->codec_id == AV_CODEC_ID_ALIAS_PIX) // we cannot distingiush this from BRENDER_PIX
|
|
st->codecpar->codec_id = AV_CODEC_ID_NONE;
|
|
}
|
|
if (st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO &&
|
|
pix_fmt != AV_PIX_FMT_NONE)
|
|
st->codecpar->format = pix_fmt;
|
|
|
|
return 0;
|
|
}
|
|
|
|
int ff_img_read_packet(AVFormatContext *s1, AVPacket *pkt)
|
|
{
|
|
VideoDemuxData *s = s1->priv_data;
|
|
char filename_bytes[1024];
|
|
char *filename = filename_bytes;
|
|
int i, res;
|
|
int size[3] = { 0 }, ret[3] = { 0 };
|
|
AVIOContext *f[3] = { NULL };
|
|
AVCodecParameters *par = s1->streams[0]->codecpar;
|
|
|
|
if (!s->is_pipe) {
|
|
/* loop over input */
|
|
if (s->loop && s->img_number > s->img_last) {
|
|
s->img_number = s->img_first;
|
|
}
|
|
if (s->img_number > s->img_last)
|
|
return AVERROR_EOF;
|
|
if (s->pattern_type == PT_NONE) {
|
|
av_strlcpy(filename_bytes, s->path, sizeof(filename_bytes));
|
|
} else if (s->use_glob) {
|
|
#if HAVE_GLOB
|
|
filename = s->globstate.gl_pathv[s->img_number];
|
|
#endif
|
|
} else {
|
|
if (av_get_frame_filename(filename_bytes, sizeof(filename_bytes),
|
|
s->path,
|
|
s->img_number) < 0 && s->img_number > 1)
|
|
return AVERROR(EIO);
|
|
}
|
|
for (i = 0; i < 3; i++) {
|
|
if (s1->pb &&
|
|
!strcmp(filename_bytes, s->path) &&
|
|
!s->loop &&
|
|
!s->split_planes) {
|
|
f[i] = s1->pb;
|
|
} else if (s1->io_open(s1, &f[i], filename, AVIO_FLAG_READ, NULL) < 0) {
|
|
if (i >= 1)
|
|
break;
|
|
av_log(s1, AV_LOG_ERROR, "Could not open file : %s\n",
|
|
filename);
|
|
return AVERROR(EIO);
|
|
}
|
|
size[i] = avio_size(f[i]);
|
|
|
|
if (!s->split_planes)
|
|
break;
|
|
filename[strlen(filename) - 1] = 'U' + i;
|
|
}
|
|
|
|
if (par->codec_id == AV_CODEC_ID_NONE) {
|
|
AVProbeData pd = { 0 };
|
|
AVInputFormat *ifmt;
|
|
uint8_t header[PROBE_BUF_MIN + AVPROBE_PADDING_SIZE];
|
|
int ret;
|
|
int score = 0;
|
|
|
|
ret = avio_read(f[0], header, PROBE_BUF_MIN);
|
|
if (ret < 0)
|
|
return ret;
|
|
memset(header + ret, 0, sizeof(header) - ret);
|
|
avio_skip(f[0], -ret);
|
|
pd.buf = header;
|
|
pd.buf_size = ret;
|
|
pd.filename = filename;
|
|
|
|
ifmt = av_probe_input_format3(&pd, 1, &score);
|
|
if (ifmt && ifmt->read_packet == ff_img_read_packet && ifmt->raw_codec_id)
|
|
par->codec_id = ifmt->raw_codec_id;
|
|
}
|
|
|
|
if (par->codec_id == AV_CODEC_ID_RAWVIDEO && !par->width)
|
|
infer_size(&par->width, &par->height, size[0]);
|
|
} else {
|
|
f[0] = s1->pb;
|
|
if (avio_feof(f[0]) && s->loop && s->is_pipe)
|
|
avio_seek(f[0], 0, SEEK_SET);
|
|
if (avio_feof(f[0]))
|
|
return AVERROR_EOF;
|
|
if (s->frame_size > 0) {
|
|
size[0] = s->frame_size;
|
|
} else if (!s1->streams[0]->parser) {
|
|
size[0] = avio_size(s1->pb);
|
|
} else {
|
|
size[0] = 4096;
|
|
}
|
|
}
|
|
|
|
res = av_new_packet(pkt, size[0] + size[1] + size[2]);
|
|
if (res < 0) {
|
|
goto fail;
|
|
}
|
|
pkt->stream_index = 0;
|
|
pkt->flags |= AV_PKT_FLAG_KEY;
|
|
if (s->ts_from_file) {
|
|
struct stat img_stat;
|
|
if (stat(filename, &img_stat)) {
|
|
res = AVERROR(EIO);
|
|
goto fail;
|
|
}
|
|
pkt->pts = (int64_t)img_stat.st_mtime;
|
|
#if HAVE_STRUCT_STAT_ST_MTIM_TV_NSEC
|
|
if (s->ts_from_file == 2)
|
|
pkt->pts = 1000000000*pkt->pts + img_stat.st_mtim.tv_nsec;
|
|
#endif
|
|
av_add_index_entry(s1->streams[0], s->img_number, pkt->pts, 0, 0, AVINDEX_KEYFRAME);
|
|
} else if (!s->is_pipe) {
|
|
pkt->pts = s->pts;
|
|
}
|
|
|
|
if (s->is_pipe)
|
|
pkt->pos = avio_tell(f[0]);
|
|
|
|
pkt->size = 0;
|
|
for (i = 0; i < 3; i++) {
|
|
if (f[i]) {
|
|
ret[i] = avio_read(f[i], pkt->data + pkt->size, size[i]);
|
|
if (s->loop && s->is_pipe && ret[i] == AVERROR_EOF) {
|
|
if (avio_seek(f[i], 0, SEEK_SET) >= 0) {
|
|
pkt->pos = 0;
|
|
ret[i] = avio_read(f[i], pkt->data + pkt->size, size[i]);
|
|
}
|
|
}
|
|
if (!s->is_pipe && f[i] != s1->pb)
|
|
ff_format_io_close(s1, &f[i]);
|
|
if (ret[i] > 0)
|
|
pkt->size += ret[i];
|
|
}
|
|
}
|
|
|
|
if (ret[0] <= 0 || ret[1] < 0 || ret[2] < 0) {
|
|
av_packet_unref(pkt);
|
|
if (ret[0] < 0) {
|
|
res = ret[0];
|
|
} else if (ret[1] < 0) {
|
|
res = ret[1];
|
|
} else if (ret[2] < 0) {
|
|
res = ret[2];
|
|
} else {
|
|
res = AVERROR_EOF;
|
|
}
|
|
goto fail;
|
|
} else {
|
|
s->img_count++;
|
|
s->img_number++;
|
|
s->pts++;
|
|
return 0;
|
|
}
|
|
|
|
fail:
|
|
if (!s->is_pipe) {
|
|
for (i = 0; i < 3; i++) {
|
|
if (f[i] != s1->pb)
|
|
ff_format_io_close(s1, &f[i]);
|
|
}
|
|
}
|
|
return res;
|
|
}
|
|
|
|
static int img_read_close(struct AVFormatContext* s1)
|
|
{
|
|
#if HAVE_GLOB
|
|
VideoDemuxData *s = s1->priv_data;
|
|
if (s->use_glob) {
|
|
globfree(&s->globstate);
|
|
}
|
|
#endif
|
|
return 0;
|
|
}
|
|
|
|
static int img_read_seek(AVFormatContext *s, int stream_index, int64_t timestamp, int flags)
|
|
{
|
|
VideoDemuxData *s1 = s->priv_data;
|
|
AVStream *st = s->streams[0];
|
|
|
|
if (s1->ts_from_file) {
|
|
int index = av_index_search_timestamp(st, timestamp, flags);
|
|
if(index < 0)
|
|
return -1;
|
|
s1->img_number = st->index_entries[index].pos;
|
|
return 0;
|
|
}
|
|
|
|
if (timestamp < 0 || !s1->loop && timestamp > s1->img_last - s1->img_first)
|
|
return -1;
|
|
s1->img_number = timestamp%(s1->img_last - s1->img_first + 1) + s1->img_first;
|
|
s1->pts = timestamp;
|
|
return 0;
|
|
}
|
|
|
|
#define OFFSET(x) offsetof(VideoDemuxData, x)
|
|
#define DEC AV_OPT_FLAG_DECODING_PARAM
|
|
const AVOption ff_img_options[] = {
|
|
{ "framerate", "set the video framerate", OFFSET(framerate), AV_OPT_TYPE_VIDEO_RATE, {.str = "25"}, 0, INT_MAX, DEC },
|
|
{ "loop", "force loop over input file sequence", OFFSET(loop), AV_OPT_TYPE_BOOL, {.i64 = 0 }, 0, 1, DEC },
|
|
|
|
{ "pattern_type", "set pattern type", OFFSET(pattern_type), AV_OPT_TYPE_INT, {.i64=PT_DEFAULT}, 0, INT_MAX, DEC, "pattern_type"},
|
|
{ "glob_sequence","select glob/sequence pattern type", 0, AV_OPT_TYPE_CONST, {.i64=PT_GLOB_SEQUENCE}, INT_MIN, INT_MAX, DEC, "pattern_type" },
|
|
{ "glob", "select glob pattern type", 0, AV_OPT_TYPE_CONST, {.i64=PT_GLOB }, INT_MIN, INT_MAX, DEC, "pattern_type" },
|
|
{ "sequence", "select sequence pattern type", 0, AV_OPT_TYPE_CONST, {.i64=PT_SEQUENCE }, INT_MIN, INT_MAX, DEC, "pattern_type" },
|
|
{ "none", "disable pattern matching", 0, AV_OPT_TYPE_CONST, {.i64=PT_NONE }, INT_MIN, INT_MAX, DEC, "pattern_type" },
|
|
|
|
{ "pixel_format", "set video pixel format", OFFSET(pixel_format), AV_OPT_TYPE_STRING, {.str = NULL}, 0, 0, DEC },
|
|
{ "start_number", "set first number in the sequence", OFFSET(start_number), AV_OPT_TYPE_INT, {.i64 = 0 }, INT_MIN, INT_MAX, DEC },
|
|
{ "start_number_range", "set range for looking at the first sequence number", OFFSET(start_number_range), AV_OPT_TYPE_INT, {.i64 = 5}, 1, INT_MAX, DEC },
|
|
{ "video_size", "set video size", OFFSET(width), AV_OPT_TYPE_IMAGE_SIZE, {.str = NULL}, 0, 0, DEC },
|
|
{ "frame_size", "force frame size in bytes", OFFSET(frame_size), AV_OPT_TYPE_INT, {.i64 = 0 }, 0, INT_MAX, DEC },
|
|
{ "ts_from_file", "set frame timestamp from file's one", OFFSET(ts_from_file), AV_OPT_TYPE_INT, {.i64 = 0 }, 0, 2, DEC, "ts_type" },
|
|
{ "none", "none", 0, AV_OPT_TYPE_CONST, {.i64 = 0 }, 0, 2, DEC, "ts_type" },
|
|
{ "sec", "second precision", 0, AV_OPT_TYPE_CONST, {.i64 = 1 }, 0, 2, DEC, "ts_type" },
|
|
{ "ns", "nano second precision", 0, AV_OPT_TYPE_CONST, {.i64 = 2 }, 0, 2, DEC, "ts_type" },
|
|
{ NULL },
|
|
};
|
|
|
|
#if CONFIG_IMAGE2_DEMUXER
|
|
static const AVClass img2_class = {
|
|
.class_name = "image2 demuxer",
|
|
.item_name = av_default_item_name,
|
|
.option = ff_img_options,
|
|
.version = LIBAVUTIL_VERSION_INT,
|
|
};
|
|
AVInputFormat ff_image2_demuxer = {
|
|
.name = "image2",
|
|
.long_name = NULL_IF_CONFIG_SMALL("image2 sequence"),
|
|
.priv_data_size = sizeof(VideoDemuxData),
|
|
.read_probe = img_read_probe,
|
|
.read_header = ff_img_read_header,
|
|
.read_packet = ff_img_read_packet,
|
|
.read_close = img_read_close,
|
|
.read_seek = img_read_seek,
|
|
.flags = AVFMT_NOFILE,
|
|
.priv_class = &img2_class,
|
|
};
|
|
#endif
|
|
#if CONFIG_IMAGE2PIPE_DEMUXER
|
|
static const AVClass img2pipe_class = {
|
|
.class_name = "image2pipe demuxer",
|
|
.item_name = av_default_item_name,
|
|
.option = ff_img_options,
|
|
.version = LIBAVUTIL_VERSION_INT,
|
|
};
|
|
AVInputFormat ff_image2pipe_demuxer = {
|
|
.name = "image2pipe",
|
|
.long_name = NULL_IF_CONFIG_SMALL("piped image2 sequence"),
|
|
.priv_data_size = sizeof(VideoDemuxData),
|
|
.read_header = ff_img_read_header,
|
|
.read_packet = ff_img_read_packet,
|
|
.priv_class = &img2pipe_class,
|
|
};
|
|
#endif
|
|
|
|
static int bmp_probe(AVProbeData *p)
|
|
{
|
|
const uint8_t *b = p->buf;
|
|
int ihsize;
|
|
|
|
if (AV_RB16(b) != 0x424d)
|
|
return 0;
|
|
|
|
ihsize = AV_RL32(b+14);
|
|
if (ihsize < 12 || ihsize > 255)
|
|
return 0;
|
|
|
|
if (!AV_RN32(b + 6)) {
|
|
return AVPROBE_SCORE_EXTENSION + 1;
|
|
}
|
|
return AVPROBE_SCORE_EXTENSION / 4;
|
|
}
|
|
|
|
static int dds_probe(AVProbeData *p)
|
|
{
|
|
const uint8_t *b = p->buf;
|
|
|
|
if ( AV_RB64(b) == 0x444453207c000000
|
|
&& AV_RL32(b + 8)
|
|
&& AV_RL32(b + 12))
|
|
return AVPROBE_SCORE_MAX - 1;
|
|
return 0;
|
|
}
|
|
|
|
static int dpx_probe(AVProbeData *p)
|
|
{
|
|
const uint8_t *b = p->buf;
|
|
int w, h;
|
|
int is_big = (AV_RN32(b) == AV_RN32("SDPX"));
|
|
|
|
if (p->buf_size < 0x304+8)
|
|
return 0;
|
|
w = is_big ? AV_RB32(p->buf + 0x304) : AV_RL32(p->buf + 0x304);
|
|
h = is_big ? AV_RB32(p->buf + 0x308) : AV_RL32(p->buf + 0x308);
|
|
if (w <= 0 || h <= 0)
|
|
return 0;
|
|
|
|
if (is_big || AV_RN32(b) == AV_RN32("XPDS"))
|
|
return AVPROBE_SCORE_EXTENSION + 1;
|
|
return 0;
|
|
}
|
|
|
|
static int exr_probe(AVProbeData *p)
|
|
{
|
|
const uint8_t *b = p->buf;
|
|
|
|
if (AV_RL32(b) == 20000630)
|
|
return AVPROBE_SCORE_EXTENSION + 1;
|
|
return 0;
|
|
}
|
|
|
|
static int j2k_probe(AVProbeData *p)
|
|
{
|
|
const uint8_t *b = p->buf;
|
|
|
|
if (AV_RB64(b) == 0x0000000c6a502020 ||
|
|
AV_RB32(b) == 0xff4fff51)
|
|
return AVPROBE_SCORE_EXTENSION + 1;
|
|
return 0;
|
|
}
|
|
|
|
static int jpeg_probe(AVProbeData *p)
|
|
{
|
|
const uint8_t *b = p->buf;
|
|
int i, state = SOI;
|
|
|
|
if (AV_RB16(b) != 0xFFD8 ||
|
|
AV_RB32(b) == 0xFFD8FFF7)
|
|
return 0;
|
|
|
|
b += 2;
|
|
for (i = 0; i < p->buf_size - 3; i++) {
|
|
int c;
|
|
if (b[i] != 0xFF)
|
|
continue;
|
|
c = b[i + 1];
|
|
switch (c) {
|
|
case SOI:
|
|
return 0;
|
|
case SOF0:
|
|
case SOF1:
|
|
case SOF2:
|
|
case SOF3:
|
|
case SOF5:
|
|
case SOF6:
|
|
case SOF7:
|
|
i += AV_RB16(&b[i + 2]) + 1;
|
|
if (state != SOI)
|
|
return 0;
|
|
state = SOF0;
|
|
break;
|
|
case SOS:
|
|
i += AV_RB16(&b[i + 2]) + 1;
|
|
if (state != SOF0 && state != SOS)
|
|
return 0;
|
|
state = SOS;
|
|
break;
|
|
case EOI:
|
|
if (state != SOS)
|
|
return 0;
|
|
state = EOI;
|
|
break;
|
|
case APP0:
|
|
case APP1:
|
|
case APP2:
|
|
case APP3:
|
|
case APP4:
|
|
case APP5:
|
|
case APP6:
|
|
case APP7:
|
|
case APP8:
|
|
case APP9:
|
|
case APP10:
|
|
case APP11:
|
|
case APP12:
|
|
case APP13:
|
|
case APP14:
|
|
case APP15:
|
|
case COM:
|
|
i += AV_RB16(&b[i + 2]) + 1;
|
|
break;
|
|
default:
|
|
if ( (c > TEM && c < SOF0)
|
|
|| c == JPG)
|
|
return 0;
|
|
}
|
|
}
|
|
|
|
if (state == EOI)
|
|
return AVPROBE_SCORE_EXTENSION + 1;
|
|
return AVPROBE_SCORE_EXTENSION / 8;
|
|
}
|
|
|
|
static int jpegls_probe(AVProbeData *p)
|
|
{
|
|
const uint8_t *b = p->buf;
|
|
|
|
if (AV_RB32(b) == 0xffd8fff7)
|
|
return AVPROBE_SCORE_EXTENSION + 1;
|
|
return 0;
|
|
}
|
|
|
|
static int pcx_probe(AVProbeData *p)
|
|
{
|
|
const uint8_t *b = p->buf;
|
|
|
|
if ( p->buf_size < 128
|
|
|| b[0] != 10
|
|
|| b[1] > 5
|
|
|| b[2] != 1
|
|
|| av_popcount(b[3]) != 1 || b[3] > 8
|
|
|| AV_RL16(&b[4]) > AV_RL16(&b[8])
|
|
|| AV_RL16(&b[6]) > AV_RL16(&b[10])
|
|
|| b[64])
|
|
return 0;
|
|
b += 73;
|
|
while (++b < p->buf + 128)
|
|
if (*b)
|
|
return AVPROBE_SCORE_EXTENSION / 4;
|
|
|
|
return AVPROBE_SCORE_EXTENSION + 1;
|
|
}
|
|
|
|
static int qdraw_probe(AVProbeData *p)
|
|
{
|
|
const uint8_t *b = p->buf;
|
|
|
|
if ( p->buf_size >= 528
|
|
&& (AV_RB64(b + 520) & 0xFFFFFFFFFFFF) == 0x001102ff0c00
|
|
&& AV_RB16(b + 520)
|
|
&& AV_RB16(b + 518))
|
|
return AVPROBE_SCORE_MAX * 3 / 4;
|
|
if ( (AV_RB64(b + 8) & 0xFFFFFFFFFFFF) == 0x001102ff0c00
|
|
&& AV_RB16(b + 8)
|
|
&& AV_RB16(b + 6))
|
|
return AVPROBE_SCORE_EXTENSION / 4;
|
|
return 0;
|
|
}
|
|
|
|
static int pictor_probe(AVProbeData *p)
|
|
{
|
|
const uint8_t *b = p->buf;
|
|
|
|
if (AV_RL16(b) == 0x1234)
|
|
return AVPROBE_SCORE_EXTENSION / 4;
|
|
return 0;
|
|
}
|
|
|
|
static int png_probe(AVProbeData *p)
|
|
{
|
|
const uint8_t *b = p->buf;
|
|
|
|
if (AV_RB64(b) == 0x89504e470d0a1a0a)
|
|
return AVPROBE_SCORE_MAX - 1;
|
|
return 0;
|
|
}
|
|
|
|
static int sgi_probe(AVProbeData *p)
|
|
{
|
|
const uint8_t *b = p->buf;
|
|
|
|
if (AV_RB16(b) == 474 &&
|
|
(b[2] & ~1) == 0 &&
|
|
(b[3] & ~3) == 0 && b[3] &&
|
|
(AV_RB16(b + 4) & ~7) == 0 && AV_RB16(b + 4))
|
|
return AVPROBE_SCORE_EXTENSION + 1;
|
|
return 0;
|
|
}
|
|
|
|
static int sunrast_probe(AVProbeData *p)
|
|
{
|
|
const uint8_t *b = p->buf;
|
|
|
|
if (AV_RB32(b) == 0x59a66a95)
|
|
return AVPROBE_SCORE_EXTENSION + 1;
|
|
return 0;
|
|
}
|
|
|
|
static int tiff_probe(AVProbeData *p)
|
|
{
|
|
const uint8_t *b = p->buf;
|
|
|
|
if (AV_RB32(b) == 0x49492a00 ||
|
|
AV_RB32(b) == 0x4D4D002a)
|
|
return AVPROBE_SCORE_EXTENSION + 1;
|
|
return 0;
|
|
}
|
|
|
|
static int webp_probe(AVProbeData *p)
|
|
{
|
|
const uint8_t *b = p->buf;
|
|
|
|
if (AV_RB32(b) == 0x52494646 &&
|
|
AV_RB32(b + 8) == 0x57454250)
|
|
return AVPROBE_SCORE_MAX - 1;
|
|
return 0;
|
|
}
|
|
|
|
#define IMAGEAUTO_DEMUXER(imgname, codecid)\
|
|
static const AVClass imgname ## _class = {\
|
|
.class_name = AV_STRINGIFY(imgname) " demuxer",\
|
|
.item_name = av_default_item_name,\
|
|
.option = ff_img_options,\
|
|
.version = LIBAVUTIL_VERSION_INT,\
|
|
};\
|
|
AVInputFormat ff_image_ ## imgname ## _pipe_demuxer = {\
|
|
.name = AV_STRINGIFY(imgname) "_pipe",\
|
|
.long_name = NULL_IF_CONFIG_SMALL("piped " AV_STRINGIFY(imgname) " sequence"),\
|
|
.priv_data_size = sizeof(VideoDemuxData),\
|
|
.read_probe = imgname ## _probe,\
|
|
.read_header = ff_img_read_header,\
|
|
.read_packet = ff_img_read_packet,\
|
|
.priv_class = & imgname ## _class,\
|
|
.flags = AVFMT_GENERIC_INDEX, \
|
|
.raw_codec_id = codecid,\
|
|
};
|
|
|
|
IMAGEAUTO_DEMUXER(bmp, AV_CODEC_ID_BMP)
|
|
IMAGEAUTO_DEMUXER(dds, AV_CODEC_ID_DDS)
|
|
IMAGEAUTO_DEMUXER(dpx, AV_CODEC_ID_DPX)
|
|
IMAGEAUTO_DEMUXER(exr, AV_CODEC_ID_EXR)
|
|
IMAGEAUTO_DEMUXER(j2k, AV_CODEC_ID_JPEG2000)
|
|
IMAGEAUTO_DEMUXER(jpeg, AV_CODEC_ID_MJPEG)
|
|
IMAGEAUTO_DEMUXER(jpegls, AV_CODEC_ID_JPEGLS)
|
|
IMAGEAUTO_DEMUXER(pcx, AV_CODEC_ID_PCX)
|
|
IMAGEAUTO_DEMUXER(pictor, AV_CODEC_ID_PICTOR)
|
|
IMAGEAUTO_DEMUXER(png, AV_CODEC_ID_PNG)
|
|
IMAGEAUTO_DEMUXER(qdraw, AV_CODEC_ID_QDRAW)
|
|
IMAGEAUTO_DEMUXER(sgi, AV_CODEC_ID_SGI)
|
|
IMAGEAUTO_DEMUXER(sunrast, AV_CODEC_ID_SUNRAST)
|
|
IMAGEAUTO_DEMUXER(tiff, AV_CODEC_ID_TIFF)
|
|
IMAGEAUTO_DEMUXER(webp, AV_CODEC_ID_WEBP)
|