mirror of
https://git.videolan.org/git/ffmpeg.git
synced 2024-09-07 16:40:10 +02:00
510 lines
16 KiB
C
510 lines
16 KiB
C
/*
|
|
* Image format
|
|
* Copyright (c) 2000, 2001, 2002 Fabrice Bellard
|
|
* Copyright (c) 2004 Michael Niedermayer
|
|
*
|
|
* This file is part of FFmpeg.
|
|
*
|
|
* FFmpeg is free software; you can redistribute it and/or
|
|
* modify it under the terms of the GNU Lesser General Public
|
|
* License as published by the Free Software Foundation; either
|
|
* version 2.1 of the License, or (at your option) any later version.
|
|
*
|
|
* FFmpeg is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
* Lesser General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU Lesser General Public
|
|
* License along with FFmpeg; if not, write to the Free Software
|
|
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
|
|
*/
|
|
|
|
#include <sys/stat.h>
|
|
#include "libavutil/avstring.h"
|
|
#include "libavutil/log.h"
|
|
#include "libavutil/opt.h"
|
|
#include "libavutil/pixdesc.h"
|
|
#include "libavutil/parseutils.h"
|
|
#include "avformat.h"
|
|
#include "internal.h"
|
|
#if HAVE_GLOB
|
|
#include <glob.h>
|
|
|
|
/* Locally define as 0 (bitwise-OR no-op) any missing glob options that
|
|
are non-posix glibc/bsd extensions. */
|
|
#ifndef GLOB_NOMAGIC
|
|
#define GLOB_NOMAGIC 0
|
|
#endif
|
|
#ifndef GLOB_BRACE
|
|
#define GLOB_BRACE 0
|
|
#endif
|
|
|
|
#endif /* HAVE_GLOB */
|
|
|
|
typedef struct {
|
|
const AVClass *class; /**< Class for private options. */
|
|
int img_first;
|
|
int img_last;
|
|
int img_number;
|
|
int64_t pts;
|
|
int img_count;
|
|
int is_pipe;
|
|
int split_planes; /**< use independent file for each Y, U, V plane */
|
|
char path[1024];
|
|
char *pixel_format; /**< Set by a private option. */
|
|
int width, height; /**< Set by a private option. */
|
|
AVRational framerate; /**< Set by a private option. */
|
|
int loop;
|
|
enum { PT_GLOB_SEQUENCE, PT_GLOB, PT_SEQUENCE } pattern_type;
|
|
int use_glob;
|
|
#if HAVE_GLOB
|
|
glob_t globstate;
|
|
#endif
|
|
int start_number;
|
|
int start_number_range;
|
|
int frame_size;
|
|
int ts_from_file;
|
|
} VideoDemuxData;
|
|
|
|
static const int sizes[][2] = {
|
|
{ 640, 480 },
|
|
{ 720, 480 },
|
|
{ 720, 576 },
|
|
{ 352, 288 },
|
|
{ 352, 240 },
|
|
{ 160, 128 },
|
|
{ 512, 384 },
|
|
{ 640, 352 },
|
|
{ 640, 240 },
|
|
};
|
|
|
|
static int infer_size(int *width_ptr, int *height_ptr, int size)
|
|
{
|
|
int i;
|
|
|
|
for (i = 0; i < FF_ARRAY_ELEMS(sizes); i++) {
|
|
if ((sizes[i][0] * sizes[i][1]) == size) {
|
|
*width_ptr = sizes[i][0];
|
|
*height_ptr = sizes[i][1];
|
|
return 0;
|
|
}
|
|
}
|
|
|
|
return -1;
|
|
}
|
|
|
|
static int is_glob(const char *path)
|
|
{
|
|
#if HAVE_GLOB
|
|
size_t span = 0;
|
|
const char *p = path;
|
|
|
|
while (p = strchr(p, '%')) {
|
|
if (*(++p) == '%') {
|
|
++p;
|
|
continue;
|
|
}
|
|
if (span = strspn(p, "*?[]{}"))
|
|
break;
|
|
}
|
|
/* Did we hit a glob char or get to the end? */
|
|
return span != 0;
|
|
#else
|
|
return 0;
|
|
#endif
|
|
}
|
|
|
|
/**
|
|
* Get index range of image files matched by path.
|
|
*
|
|
* @param pfirst_index pointer to index updated with the first number in the range
|
|
* @param plast_index pointer to index updated with the last number in the range
|
|
* @param path path which has to be matched by the image files in the range
|
|
* @param start_index minimum accepted value for the first index in the range
|
|
* @return -1 if no image file could be found
|
|
*/
|
|
static int find_image_range(int *pfirst_index, int *plast_index,
|
|
const char *path, int start_index, int start_index_range)
|
|
{
|
|
char buf[1024];
|
|
int range, last_index, range1, first_index;
|
|
|
|
/* find the first image */
|
|
for (first_index = start_index; first_index < start_index + start_index_range; first_index++) {
|
|
if (av_get_frame_filename(buf, sizeof(buf), path, first_index) < 0) {
|
|
*pfirst_index =
|
|
*plast_index = 1;
|
|
if (avio_check(buf, AVIO_FLAG_READ) > 0)
|
|
return 0;
|
|
return -1;
|
|
}
|
|
if (avio_check(buf, AVIO_FLAG_READ) > 0)
|
|
break;
|
|
}
|
|
if (first_index == start_index + start_index_range)
|
|
goto fail;
|
|
|
|
/* find the last image */
|
|
last_index = first_index;
|
|
for (;;) {
|
|
range = 0;
|
|
for (;;) {
|
|
if (!range)
|
|
range1 = 1;
|
|
else
|
|
range1 = 2 * range;
|
|
if (av_get_frame_filename(buf, sizeof(buf), path,
|
|
last_index + range1) < 0)
|
|
goto fail;
|
|
if (avio_check(buf, AVIO_FLAG_READ) <= 0)
|
|
break;
|
|
range = range1;
|
|
/* just in case... */
|
|
if (range >= (1 << 30))
|
|
goto fail;
|
|
}
|
|
/* we are sure than image last_index + range exists */
|
|
if (!range)
|
|
break;
|
|
last_index += range;
|
|
}
|
|
*pfirst_index = first_index;
|
|
*plast_index = last_index;
|
|
return 0;
|
|
|
|
fail:
|
|
return -1;
|
|
}
|
|
|
|
static int img_read_probe(AVProbeData *p)
|
|
{
|
|
if (p->filename && ff_guess_image2_codec(p->filename)) {
|
|
if (av_filename_number_test(p->filename))
|
|
return AVPROBE_SCORE_MAX;
|
|
else if (is_glob(p->filename))
|
|
return AVPROBE_SCORE_MAX;
|
|
else if (av_match_ext(p->filename, "raw") || av_match_ext(p->filename, "gif"))
|
|
return 5;
|
|
else
|
|
return AVPROBE_SCORE_EXTENSION;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static int img_read_header(AVFormatContext *s1)
|
|
{
|
|
VideoDemuxData *s = s1->priv_data;
|
|
int first_index, last_index;
|
|
AVStream *st;
|
|
enum AVPixelFormat pix_fmt = AV_PIX_FMT_NONE;
|
|
|
|
s1->ctx_flags |= AVFMTCTX_NOHEADER;
|
|
|
|
st = avformat_new_stream(s1, NULL);
|
|
if (!st) {
|
|
return AVERROR(ENOMEM);
|
|
}
|
|
|
|
if (s->pixel_format &&
|
|
(pix_fmt = av_get_pix_fmt(s->pixel_format)) == AV_PIX_FMT_NONE) {
|
|
av_log(s1, AV_LOG_ERROR, "No such pixel format: %s.\n",
|
|
s->pixel_format);
|
|
return AVERROR(EINVAL);
|
|
}
|
|
|
|
av_strlcpy(s->path, s1->filename, sizeof(s->path));
|
|
s->img_number = 0;
|
|
s->img_count = 0;
|
|
|
|
/* find format */
|
|
if (s1->iformat->flags & AVFMT_NOFILE)
|
|
s->is_pipe = 0;
|
|
else {
|
|
s->is_pipe = 1;
|
|
st->need_parsing = AVSTREAM_PARSE_FULL;
|
|
}
|
|
|
|
if (s->ts_from_file)
|
|
avpriv_set_pts_info(st, 64, 1, 1);
|
|
else
|
|
avpriv_set_pts_info(st, 64, s->framerate.den, s->framerate.num);
|
|
|
|
if (s->width && s->height) {
|
|
st->codec->width = s->width;
|
|
st->codec->height = s->height;
|
|
}
|
|
|
|
if (!s->is_pipe) {
|
|
if (s->pattern_type == PT_GLOB_SEQUENCE) {
|
|
s->use_glob = is_glob(s->path);
|
|
if (s->use_glob) {
|
|
char *p = s->path, *q, *dup;
|
|
int gerr;
|
|
|
|
av_log(s1, AV_LOG_WARNING, "Pattern type 'glob_sequence' is deprecated: "
|
|
"use pattern_type 'glob' instead\n");
|
|
#if HAVE_GLOB
|
|
dup = q = av_strdup(p);
|
|
while (*q) {
|
|
/* Do we have room for the next char and a \ insertion? */
|
|
if ((p - s->path) >= (sizeof(s->path) - 2))
|
|
break;
|
|
if (*q == '%' && strspn(q + 1, "%*?[]{}"))
|
|
++q;
|
|
else if (strspn(q, "\\*?[]{}"))
|
|
*p++ = '\\';
|
|
*p++ = *q++;
|
|
}
|
|
*p = 0;
|
|
av_free(dup);
|
|
|
|
gerr = glob(s->path, GLOB_NOCHECK|GLOB_BRACE|GLOB_NOMAGIC, NULL, &s->globstate);
|
|
if (gerr != 0) {
|
|
return AVERROR(ENOENT);
|
|
}
|
|
first_index = 0;
|
|
last_index = s->globstate.gl_pathc - 1;
|
|
#endif
|
|
}
|
|
}
|
|
if ((s->pattern_type == PT_GLOB_SEQUENCE && !s->use_glob) || s->pattern_type == PT_SEQUENCE) {
|
|
if (find_image_range(&first_index, &last_index, s->path,
|
|
s->start_number, s->start_number_range) < 0) {
|
|
av_log(s1, AV_LOG_ERROR,
|
|
"Could find no file with path '%s' and index in the range %d-%d\n",
|
|
s->path, s->start_number, s->start_number + s->start_number_range - 1);
|
|
return AVERROR(ENOENT);
|
|
}
|
|
} else if (s->pattern_type == PT_GLOB) {
|
|
#if HAVE_GLOB
|
|
int gerr;
|
|
gerr = glob(s->path, GLOB_NOCHECK|GLOB_BRACE|GLOB_NOMAGIC, NULL, &s->globstate);
|
|
if (gerr != 0) {
|
|
return AVERROR(ENOENT);
|
|
}
|
|
first_index = 0;
|
|
last_index = s->globstate.gl_pathc - 1;
|
|
s->use_glob = 1;
|
|
#else
|
|
av_log(s1, AV_LOG_ERROR,
|
|
"Pattern type 'glob' was selected but globbing "
|
|
"is not supported by this libavformat build\n");
|
|
return AVERROR(ENOSYS);
|
|
#endif
|
|
} else if (s->pattern_type != PT_GLOB_SEQUENCE) {
|
|
av_log(s1, AV_LOG_ERROR,
|
|
"Unknown value '%d' for pattern_type option\n", s->pattern_type);
|
|
return AVERROR(EINVAL);
|
|
}
|
|
s->img_first = first_index;
|
|
s->img_last = last_index;
|
|
s->img_number = first_index;
|
|
/* compute duration */
|
|
if (!s->ts_from_file) {
|
|
st->start_time = 0;
|
|
st->duration = last_index - first_index + 1;
|
|
}
|
|
}
|
|
|
|
if (s1->video_codec_id) {
|
|
st->codec->codec_type = AVMEDIA_TYPE_VIDEO;
|
|
st->codec->codec_id = s1->video_codec_id;
|
|
} else if (s1->audio_codec_id) {
|
|
st->codec->codec_type = AVMEDIA_TYPE_AUDIO;
|
|
st->codec->codec_id = s1->audio_codec_id;
|
|
} else {
|
|
const char *str = strrchr(s->path, '.');
|
|
s->split_planes = str && !av_strcasecmp(str + 1, "y");
|
|
st->codec->codec_type = AVMEDIA_TYPE_VIDEO;
|
|
st->codec->codec_id = ff_guess_image2_codec(s->path);
|
|
if (st->codec->codec_id == AV_CODEC_ID_LJPEG)
|
|
st->codec->codec_id = AV_CODEC_ID_MJPEG;
|
|
}
|
|
if (st->codec->codec_type == AVMEDIA_TYPE_VIDEO &&
|
|
pix_fmt != AV_PIX_FMT_NONE)
|
|
st->codec->pix_fmt = pix_fmt;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int img_read_packet(AVFormatContext *s1, AVPacket *pkt)
|
|
{
|
|
VideoDemuxData *s = s1->priv_data;
|
|
char filename_bytes[1024];
|
|
char *filename = filename_bytes;
|
|
int i;
|
|
int size[3] = { 0 }, ret[3] = { 0 };
|
|
AVIOContext *f[3] = { NULL };
|
|
AVCodecContext *codec = s1->streams[0]->codec;
|
|
|
|
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->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 (avio_open2(&f[i], filename, AVIO_FLAG_READ,
|
|
&s1->interrupt_callback, 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 (codec->codec_id == AV_CODEC_ID_RAWVIDEO && !codec->width)
|
|
infer_size(&codec->width, &codec->height, size[0]);
|
|
} else {
|
|
f[0] = s1->pb;
|
|
if (url_feof(f[0]))
|
|
return AVERROR(EIO);
|
|
if (s->frame_size > 0) {
|
|
size[0] = s->frame_size;
|
|
} else {
|
|
size[0] = 4096;
|
|
}
|
|
}
|
|
|
|
if (av_new_packet(pkt, size[0] + size[1] + size[2]) < 0)
|
|
return AVERROR(ENOMEM);
|
|
pkt->stream_index = 0;
|
|
pkt->flags |= AV_PKT_FLAG_KEY;
|
|
if (s->ts_from_file) {
|
|
struct stat img_stat;
|
|
if (stat(filename, &img_stat))
|
|
return AVERROR(EIO);
|
|
pkt->pts = (int64_t)img_stat.st_mtime;
|
|
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;
|
|
}
|
|
|
|
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->is_pipe)
|
|
avio_close(f[i]);
|
|
if (ret[i] > 0)
|
|
pkt->size += ret[i];
|
|
}
|
|
}
|
|
|
|
if (ret[0] <= 0 || ret[1] < 0 || ret[2] < 0) {
|
|
av_free_packet(pkt);
|
|
return AVERROR(EIO); /* signal EOF */
|
|
} else {
|
|
s->img_count++;
|
|
s->img_number++;
|
|
s->pts++;
|
|
return 0;
|
|
}
|
|
}
|
|
|
|
static int img_read_close(struct AVFormatContext* s1)
|
|
{
|
|
VideoDemuxData *s = s1->priv_data;
|
|
#if HAVE_GLOB
|
|
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
|
|
static const AVOption options[] = {
|
|
{ "framerate", "set the video framerate", OFFSET(framerate), AV_OPT_TYPE_VIDEO_RATE, {.str = "25"}, 0, 0, DEC },
|
|
{ "loop", "force loop over input file sequence", OFFSET(loop), AV_OPT_TYPE_INT, {.i64 = 0 }, 0, 1, DEC },
|
|
|
|
{ "pattern_type", "set pattern type", OFFSET(pattern_type), AV_OPT_TYPE_INT, {.i64=PT_GLOB_SEQUENCE}, 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" },
|
|
|
|
{ "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 }, 0, 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, 1, DEC },
|
|
{ NULL },
|
|
};
|
|
|
|
#if CONFIG_IMAGE2_DEMUXER
|
|
static const AVClass img2_class = {
|
|
.class_name = "image2 demuxer",
|
|
.item_name = av_default_item_name,
|
|
.option = 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 = img_read_header,
|
|
.read_packet = 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 = 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 = img_read_header,
|
|
.read_packet = img_read_packet,
|
|
.priv_class = &img2pipe_class,
|
|
};
|
|
#endif
|