| /* |
| * 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 |
| */ |
| |
| #define _DEFAULT_SOURCE |
| #define _BSD_SOURCE |
| #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 "libavutil/intreadwrite.h" |
| #include "avformat.h" |
| #include "avio_internal.h" |
| #include "internal.h" |
| #include "img2.h" |
| |
| #if HAVE_GLOB |
| /* 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 */ |
| |
| 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(AVIOContext *pb, 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 (pb || 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 (p->filename[strcspn(p->filename, "*?{")]) // probably PT_GLOB |
| return AVPROBE_SCORE_EXTENSION + 2; // score chosen to be a tad above the image pipes |
| else if (p->buf_size == 0) |
| return 0; |
| else if (av_match_ext(p->filename, "raw") || av_match_ext(p->filename, "gif")) |
| return 5; |
| else |
| return AVPROBE_SCORE_EXTENSION; |
| } |
| return 0; |
| } |
| |
| int ff_img_read_header(AVFormatContext *s1) |
| { |
| VideoDemuxData *s = s1->priv_data; |
| int first_index = 1, last_index = 1; |
| 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 == 2) { |
| #if !HAVE_STRUCT_STAT_ST_MTIM_TV_NSEC |
| av_log(s1, AV_LOG_ERROR, "POSIX.1-2008 not supported, nanosecond file timestamps unavailable\n"); |
| return AVERROR(ENOSYS); |
| #endif |
| avpriv_set_pts_info(st, 64, 1, 1000000000); |
| } else 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_DEFAULT) { |
| if (s1->pb) { |
| s->pattern_type = PT_NONE; |
| } else |
| s->pattern_type = PT_GLOB_SEQUENCE; |
| } |
| |
| if (s->pattern_type == PT_GLOB_SEQUENCE) { |
| s->use_glob = is_glob(s->path); |
| if (s->use_glob) { |
| #if HAVE_GLOB |
| char *p = s->path, *q, *dup; |
| int gerr; |
| #endif |
| |
| 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(s1->pb, &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 && s->pattern_type != PT_NONE) { |
| 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 if (s1->iformat->raw_codec_id) { |
| st->codec->codec_type = AVMEDIA_TYPE_VIDEO; |
| st->codec->codec_id = s1->iformat->raw_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; |
| 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) |
| 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))) { |
| if (fmt->read_header != ff_img_read_header || |
| !fmt->read_probe || |
| (fmt->flags & AVFMT_NOFILE) || |
| !fmt->raw_codec_id) |
| continue; |
| if (fmt->read_probe(&pd) > 0) { |
| st->codec->codec_id = fmt->raw_codec_id; |
| 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->codec->codec_id == AV_CODEC_ID_NONE) |
| 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_id == AV_CODEC_ID_ALIAS_PIX) // we cannot distingiush this from BRENDER_PIX |
| st->codec->codec_id = AV_CODEC_ID_NONE; |
| } |
| if (st->codec->codec_type == AVMEDIA_TYPE_VIDEO && |
| pix_fmt != AV_PIX_FMT_NONE) |
| st->codec->pix_fmt = 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 }; |
| 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->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 (codec->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) |
| codec->codec_id = ifmt->raw_codec_id; |
| } |
| |
| if (codec->codec_id == AV_CODEC_ID_RAWVIDEO && !codec->width) |
| infer_size(&codec->width, &codec->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, 0, 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 = 0xD8; |
| |
| 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 0xD8: |
| return 0; |
| case 0xC0: |
| case 0xC1: |
| case 0xC2: |
| case 0xC3: |
| case 0xC5: |
| case 0xC6: |
| case 0xC7: |
| if (state != 0xD8) |
| return 0; |
| state = 0xC0; |
| break; |
| case 0xDA: |
| if (state != 0xC0) |
| return 0; |
| state = 0xDA; |
| break; |
| case 0xD9: |
| if (state != 0xDA) |
| return 0; |
| state = 0xD9; |
| break; |
| case 0xE0: |
| case 0xE1: |
| case 0xE2: |
| case 0xE3: |
| case 0xE4: |
| case 0xE5: |
| case 0xE6: |
| case 0xE7: |
| case 0xE8: |
| case 0xE9: |
| case 0xEA: |
| case 0xEB: |
| case 0xEC: |
| case 0xED: |
| case 0xEE: |
| case 0xEF: |
| i += AV_RB16(&b[i + 2]) + 1; |
| break; |
| default: |
| if ( (c >= 0x02 && c <= 0xBF) |
| || c == 0xC8) |
| return 0; |
| } |
| } |
| |
| if (state == 0xD9) |
| 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 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(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) |
