| /* |
| * 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 "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; |
| 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. */ |
| char *video_size; /**< Set by a private option. */ |
| char *framerate; /**< Set by a private option. */ |
| int loop; |
| int use_glob; |
| #if HAVE_GLOB |
| glob_t globstate; |
| #endif |
| } 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 |
| } |
| |
| /* return -1 if no image found */ |
| static int find_image_range(int *pfirst_index, int *plast_index, |
| const char *path) |
| { |
| char buf[1024]; |
| int range, last_index, range1, first_index; |
| |
| /* find the first image */ |
| for(first_index = 0; first_index < 5; 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 == 5) |
| 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 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 |
| return AVPROBE_SCORE_MAX/2; |
| } |
| return 0; |
| } |
| |
| static int read_header(AVFormatContext *s1) |
| { |
| VideoDemuxData *s = s1->priv_data; |
| int first_index, last_index, ret = 0; |
| int width = 0, height = 0; |
| AVStream *st; |
| enum PixelFormat pix_fmt = PIX_FMT_NONE; |
| AVRational framerate; |
| |
| 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)) == PIX_FMT_NONE) { |
| av_log(s1, AV_LOG_ERROR, "No such pixel format: %s.\n", s->pixel_format); |
| return AVERROR(EINVAL); |
| } |
| if (s->video_size && (ret = av_parse_video_size(&width, &height, s->video_size)) < 0) { |
| av_log(s, AV_LOG_ERROR, "Could not parse video size: %s.\n", s->video_size); |
| return ret; |
| } |
| if ((ret = av_parse_video_rate(&framerate, s->framerate)) < 0) { |
| av_log(s, AV_LOG_ERROR, "Could not parse framerate: %s.\n", s->framerate); |
| return ret; |
| } |
| |
| 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; |
| } |
| |
| avpriv_set_pts_info(st, 60, framerate.den, framerate.num); |
| |
| if (width && height) { |
| st->codec->width = width; |
| st->codec->height = height; |
| } |
| |
| if (!s->is_pipe) { |
| s->use_glob = is_glob(s->path); |
| if (s->use_glob) { |
| #if HAVE_GLOB |
| char *p = s->path, *q, *dup; |
| int gerr; |
| |
| 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 |
| } else { |
| if (find_image_range(&first_index, &last_index, s->path) < 0) |
| return AVERROR(ENOENT); |
| } |
| s->img_first = first_index; |
| s->img_last = last_index; |
| s->img_number = first_index; |
| /* compute duration */ |
| 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 == CODEC_ID_LJPEG) |
| st->codec->codec_id = CODEC_ID_MJPEG; |
| } |
| if(st->codec->codec_type == AVMEDIA_TYPE_VIDEO && pix_fmt != PIX_FMT_NONE) |
| st->codec->pix_fmt = pix_fmt; |
| |
| return 0; |
| } |
| |
| static int 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]; |
| 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 == 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); |
| size[0]= 4096; |
| } |
| |
| av_new_packet(pkt, size[0] + size[1] + size[2]); |
| pkt->stream_index = 0; |
| pkt->flags |= AV_PKT_FLAG_KEY; |
| |
| pkt->size= 0; |
| for(i=0; i<3; i++){ |
| if(size[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++; |
| return 0; |
| } |
| } |
| |
| static int read_close(struct AVFormatContext* s1) |
| { |
| VideoDemuxData *s = s1->priv_data; |
| #if HAVE_GLOB |
| if (s->use_glob) { |
| globfree(&s->globstate); |
| } |
| #endif |
| return 0; |
| } |
| |
| #define OFFSET(x) offsetof(VideoDemuxData, x) |
| #define DEC AV_OPT_FLAG_DECODING_PARAM |
| static const AVOption options[] = { |
| { "pixel_format", "", OFFSET(pixel_format), AV_OPT_TYPE_STRING, {.str = NULL}, 0, 0, DEC }, |
| { "video_size", "", OFFSET(video_size), AV_OPT_TYPE_STRING, {.str = NULL}, 0, 0, DEC }, |
| { "framerate", "", OFFSET(framerate), AV_OPT_TYPE_STRING, {.str = "25"}, 0, 0, DEC }, |
| { "loop", "", OFFSET(loop), AV_OPT_TYPE_INT, {.dbl = 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 = read_probe, |
| .read_header = read_header, |
| .read_packet = read_packet, |
| .read_close = read_close, |
| .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 = read_header, |
| .read_packet = read_packet, |
| .priv_class = &img2pipe_class, |
| }; |
| #endif |