X-Git-Url: https://git.sesse.net/?a=blobdiff_plain;f=libavformat%2Fgxf.c;h=2593c0642b731ba0ad002cf85fa47d28e117dca5;hb=fc085c5b33a966ad893757ab1c4269bf829ce499;hp=5b8b33c5f214946f4d8f0f44907eed7647de5590;hpb=b7effd4e8338f6ed5bda630ad7ed0809bf458648;p=ffmpeg diff --git a/libavformat/gxf.c b/libavformat/gxf.c index 5b8b33c5f21..2593c0642b7 100644 --- a/libavformat/gxf.c +++ b/libavformat/gxf.c @@ -2,20 +2,20 @@ * GXF demuxer. * Copyright (c) 2006 Reimar Doeffinger * - * This file is part of FFmpeg. + * This file is part of Libav. * - * FFmpeg is free software; you can redistribute it and/or + * Libav 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, + * Libav 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 + * License along with Libav; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */ @@ -23,6 +23,7 @@ #include "avformat.h" #include "internal.h" #include "gxf.h" +#include "libavcodec/mpeg12data.h" struct gxf_stream_info { int64_t first_field; @@ -32,11 +33,11 @@ struct gxf_stream_info { }; /** - * \brief parses a packet header, extracting type and length - * \param pb AVIOContext to read header from - * \param type detected packet type is stored here - * \param length detected packet length, excluding header is stored here - * \return 0 if header not found or contains invalid data, 1 otherwise + * @brief parses a packet header, extracting type and length + * @param pb AVIOContext to read header from + * @param type detected packet type is stored here + * @param length detected packet length, excluding header is stored here + * @return 0 if header not found or contains invalid data, 1 otherwise */ static int parse_packet_header(AVIOContext *pb, GXFPktType *type, int *length) { if (avio_rb32(pb)) @@ -58,7 +59,7 @@ static int parse_packet_header(AVIOContext *pb, GXFPktType *type, int *length) { } /** - * \brief check if file starts with a PKT_MAP header + * @brief check if file starts with a PKT_MAP header */ static int gxf_probe(AVProbeData *p) { static const uint8_t startcode[] = {0, 0, 0, 0, 1, 0xbc}; // start with map packet @@ -70,10 +71,10 @@ static int gxf_probe(AVProbeData *p) { } /** - * \brief gets the stream index for the track with the specified id, creates new + * @brief gets the stream index for the track with the specified id, creates new * stream if not found - * \param id id of stream to find / add - * \param format stream format identifier + * @param id id of stream to find / add + * @param format stream format identifier */ static int get_sindex(AVFormatContext *s, int id, int format) { int i; @@ -81,41 +82,42 @@ static int get_sindex(AVFormatContext *s, int id, int format) { i = ff_find_stream_index(s, id); if (i >= 0) return i; - st = av_new_stream(s, id); + st = avformat_new_stream(s, NULL); if (!st) return AVERROR(ENOMEM); + st->id = id; switch (format) { case 3: case 4: st->codec->codec_type = AVMEDIA_TYPE_VIDEO; - st->codec->codec_id = CODEC_ID_MJPEG; + st->codec->codec_id = AV_CODEC_ID_MJPEG; break; case 13: case 15: st->codec->codec_type = AVMEDIA_TYPE_VIDEO; - st->codec->codec_id = CODEC_ID_DVVIDEO; + st->codec->codec_id = AV_CODEC_ID_DVVIDEO; break; case 14: case 16: st->codec->codec_type = AVMEDIA_TYPE_VIDEO; - st->codec->codec_id = CODEC_ID_DVVIDEO; + st->codec->codec_id = AV_CODEC_ID_DVVIDEO; break; case 11: case 12: case 20: st->codec->codec_type = AVMEDIA_TYPE_VIDEO; - st->codec->codec_id = CODEC_ID_MPEG2VIDEO; + st->codec->codec_id = AV_CODEC_ID_MPEG2VIDEO; st->need_parsing = AVSTREAM_PARSE_HEADERS; //get keyframe flag etc. break; case 22: case 23: st->codec->codec_type = AVMEDIA_TYPE_VIDEO; - st->codec->codec_id = CODEC_ID_MPEG1VIDEO; + st->codec->codec_id = AV_CODEC_ID_MPEG1VIDEO; st->need_parsing = AVSTREAM_PARSE_HEADERS; //get keyframe flag etc. break; case 9: st->codec->codec_type = AVMEDIA_TYPE_AUDIO; - st->codec->codec_id = CODEC_ID_PCM_S24LE; + st->codec->codec_id = AV_CODEC_ID_PCM_S24LE; st->codec->channels = 1; st->codec->sample_rate = 48000; st->codec->bit_rate = 3 * 1 * 48000 * 8; @@ -124,7 +126,7 @@ static int get_sindex(AVFormatContext *s, int id, int format) { break; case 10: st->codec->codec_type = AVMEDIA_TYPE_AUDIO; - st->codec->codec_id = CODEC_ID_PCM_S16LE; + st->codec->codec_id = AV_CODEC_ID_PCM_S16LE; st->codec->channels = 1; st->codec->sample_rate = 48000; st->codec->bit_rate = 2 * 1 * 48000 * 8; @@ -133,7 +135,7 @@ static int get_sindex(AVFormatContext *s, int id, int format) { break; case 17: st->codec->codec_type = AVMEDIA_TYPE_AUDIO; - st->codec->codec_id = CODEC_ID_AC3; + st->codec->codec_id = AV_CODEC_ID_AC3; st->codec->channels = 2; st->codec->sample_rate = 48000; break; @@ -142,20 +144,20 @@ static int get_sindex(AVFormatContext *s, int id, int format) { case 8: case 24: st->codec->codec_type = AVMEDIA_TYPE_DATA; - st->codec->codec_id = CODEC_ID_NONE; + st->codec->codec_id = AV_CODEC_ID_NONE; break; default: st->codec->codec_type = AVMEDIA_TYPE_UNKNOWN; - st->codec->codec_id = CODEC_ID_NONE; + st->codec->codec_id = AV_CODEC_ID_NONE; break; } return s->nb_streams - 1; } /** - * \brief filters out interesting tags from material information. - * \param len length of tag section, will be adjusted to contain remaining bytes - * \param si struct to store collected information into + * @brief filters out interesting tags from material information. + * @param len length of tag section, will be adjusted to contain remaining bytes + * @param si struct to store collected information into */ static void gxf_material_tags(AVIOContext *pb, int *len, struct gxf_stream_info *si) { si->first_field = AV_NOPTS_VALUE; @@ -174,25 +176,36 @@ static void gxf_material_tags(AVIOContext *pb, int *len, struct gxf_stream_info else if (tag == MAT_LAST_FIELD) si->last_field = value; } else - url_fskip(pb, tlen); + avio_skip(pb, tlen); } } +static const AVRational frame_rate_tab[] = { + { 60, 1}, + {60000, 1001}, + { 50, 1}, + { 30, 1}, + {30000, 1001}, + { 25, 1}, + { 24, 1}, + {24000, 1001}, + { 0, 0}, +}; + /** - * \brief convert fps tag value to AVRational fps - * \param fps fps value from tag - * \return fps as AVRational, or 0 / 0 if unknown + * @brief convert fps tag value to AVRational fps + * @param fps fps value from tag + * @return fps as AVRational, or 0 / 0 if unknown */ static AVRational fps_tag2avr(int32_t fps) { - extern const AVRational ff_frame_rate_tab[]; if (fps < 1 || fps > 9) fps = 9; - return ff_frame_rate_tab[9 - fps]; // values have opposite order + return frame_rate_tab[fps - 1]; } /** - * \brief convert UMF attributes flags to AVRational fps - * \param flags UMF flags to convert - * \return fps as AVRational, or 0 / 0 if unknown + * @brief convert UMF attributes flags to AVRational fps + * @param flags UMF flags to convert + * @return fps as AVRational, or 0 / 0 if unknown */ static AVRational fps_umf2avr(uint32_t flags) { static const AVRational map[] = {{50, 1}, {60000, 1001}, {24, 1}, @@ -202,9 +215,9 @@ static AVRational fps_umf2avr(uint32_t flags) { } /** - * \brief filters out interesting tags from track information. - * \param len length of tag section, will be adjusted to contain remaining bytes - * \param si struct to store collected information into + * @brief filters out interesting tags from track information. + * @param len length of tag section, will be adjusted to contain remaining bytes + * @param si struct to store collected information into */ static void gxf_track_tags(AVIOContext *pb, int *len, struct gxf_stream_info *si) { si->frames_per_second = (AVRational){0, 0}; @@ -223,12 +236,12 @@ static void gxf_track_tags(AVIOContext *pb, int *len, struct gxf_stream_info *si else if (tag == TRACK_FPF && (value == 1 || value == 2)) si->fields_per_frame = value; } else - url_fskip(pb, tlen); + avio_skip(pb, tlen); } } /** - * \brief read index from FLT packet into stream 0 av_index + * @brief read index from FLT packet into stream 0 av_index */ static void gxf_read_index(AVFormatContext *s, int pkt_len) { AVIOContext *pb = s->pb; @@ -238,7 +251,7 @@ static void gxf_read_index(AVFormatContext *s, int pkt_len) { int i; pkt_len -= 8; if (s->flags & AVFMT_FLAG_IGNIDX) { - url_fskip(pb, pkt_len); + avio_skip(pb, pkt_len); return; } if (map_cnt > 1000) { @@ -247,7 +260,7 @@ static void gxf_read_index(AVFormatContext *s, int pkt_len) { } if (pkt_len < 4 * map_cnt) { av_log(s, AV_LOG_ERROR, "invalid index length\n"); - url_fskip(pb, pkt_len); + avio_skip(pb, pkt_len); return; } pkt_len -= 4 * map_cnt; @@ -255,16 +268,16 @@ static void gxf_read_index(AVFormatContext *s, int pkt_len) { for (i = 0; i < map_cnt; i++) av_add_index_entry(st, (uint64_t)avio_rl32(pb) * 1024, i * (uint64_t)fields_per_map + 1, 0, 0, 0); - url_fskip(pb, pkt_len); + avio_skip(pb, pkt_len); } -static int gxf_header(AVFormatContext *s, AVFormatParameters *ap) { +static int gxf_header(AVFormatContext *s) { AVIOContext *pb = s->pb; GXFPktType pkt_type; int map_len; int len; AVRational main_timebase = {0, 0}; - struct gxf_stream_info si; + struct gxf_stream_info *si = s->priv_data; int i; if (!parse_packet_header(pb, &pkt_type, &map_len) || pkt_type != PKT_MAP) { av_log(s, AV_LOG_ERROR, "map packet not found\n"); @@ -282,8 +295,8 @@ static int gxf_header(AVFormatContext *s, AVFormatParameters *ap) { return 0; } map_len -= len; - gxf_material_tags(pb, &len, &si); - url_fskip(pb, len); + gxf_material_tags(pb, &len, si); + avio_skip(pb, len); map_len -= 2; len = avio_rb16(pb); // length of track description if (len > map_len) { @@ -300,8 +313,8 @@ static int gxf_header(AVFormatContext *s, AVFormatParameters *ap) { track_id = avio_r8(pb); track_len = avio_rb16(pb); len -= track_len; - gxf_track_tags(pb, &track_len, &si); - url_fskip(pb, track_len); + gxf_track_tags(pb, &track_len, si); + avio_skip(pb, track_len); if (!(track_type & 0x80)) { av_log(s, AV_LOG_ERROR, "invalid track type %x\n", track_type); continue; @@ -316,17 +329,17 @@ static int gxf_header(AVFormatContext *s, AVFormatParameters *ap) { if (idx < 0) continue; st = s->streams[idx]; if (!main_timebase.num || !main_timebase.den) { - main_timebase.num = si.frames_per_second.den; - main_timebase.den = si.frames_per_second.num * 2; + main_timebase.num = si->frames_per_second.den; + main_timebase.den = si->frames_per_second.num * 2; } - st->start_time = si.first_field; - if (si.first_field != AV_NOPTS_VALUE && si.last_field != AV_NOPTS_VALUE) - st->duration = si.last_field - si.first_field; + st->start_time = si->first_field; + if (si->first_field != AV_NOPTS_VALUE && si->last_field != AV_NOPTS_VALUE) + st->duration = si->last_field - si->first_field; } if (len < 0) av_log(s, AV_LOG_ERROR, "invalid track description length specified\n"); if (map_len) - url_fskip(pb, map_len); + avio_skip(pb, map_len); if (!parse_packet_header(pb, &pkt_type, &len)) { av_log(s, AV_LOG_ERROR, "sync lost in header\n"); return -1; @@ -342,8 +355,8 @@ static int gxf_header(AVFormatContext *s, AVFormatParameters *ap) { if (len >= 0x39) { AVRational fps; len -= 0x39; - url_fskip(pb, 5); // preamble - url_fskip(pb, 0x30); // payload description + avio_skip(pb, 5); // preamble + avio_skip(pb, 0x30); // payload description fps = fps_umf2avr(avio_rl32(pb)); if (!main_timebase.num || !main_timebase.den) { // this may not always be correct, but simply the best we can get @@ -354,31 +367,31 @@ static int gxf_header(AVFormatContext *s, AVFormatParameters *ap) { av_log(s, AV_LOG_INFO, "UMF packet too short\n"); } else av_log(s, AV_LOG_INFO, "UMF packet missing\n"); - url_fskip(pb, len); + avio_skip(pb, len); // set a fallback value, 60000/1001 is specified for audio-only files // so use that regardless of why we do not know the video frame rate. if (!main_timebase.num || !main_timebase.den) main_timebase = (AVRational){1001, 60000}; for (i = 0; i < s->nb_streams; i++) { AVStream *st = s->streams[i]; - av_set_pts_info(st, 32, main_timebase.num, main_timebase.den); + avpriv_set_pts_info(st, 32, main_timebase.num, main_timebase.den); } return 0; } #define READ_ONE() \ { \ - if (!max_interval-- || url_feof(pb)) \ + if (!max_interval-- || pb->eof_reached) \ goto out; \ tmp = tmp << 8 | avio_r8(pb); \ } /** - * \brief resync the stream on the next media packet with specified properties - * \param max_interval how many bytes to search for matching packet at most - * \param track track id the media packet must belong to, -1 for any - * \param timestamp minimum timestamp (== field number) the packet must have, -1 for any - * \return timestamp of packet found + * @brief resync the stream on the next media packet with specified properties + * @param max_interval how many bytes to search for matching packet at most + * @param track track id the media packet must belong to, -1 for any + * @param timestamp minimum timestamp (== field number) the packet must have, -1 for any + * @return timestamp of packet found */ static int64_t gxf_resync_media(AVFormatContext *s, uint64_t max_interval, int track, int timestamp) { uint32_t tmp; @@ -396,25 +409,25 @@ start: READ_ONE(); if (tmp != 1) goto start; - last_pos = url_ftell(pb); - if (url_fseek(pb, -5, SEEK_CUR) < 0) + last_pos = avio_tell(pb); + if (avio_seek(pb, -5, SEEK_CUR) < 0) goto out; if (!parse_packet_header(pb, &type, &len) || type != PKT_MEDIA) { - if (url_fseek(pb, last_pos, SEEK_SET) < 0) + if (avio_seek(pb, last_pos, SEEK_SET) < 0) goto out; goto start; } avio_r8(pb); cur_track = avio_r8(pb); cur_timestamp = avio_rb32(pb); - last_found_pos = url_ftell(pb) - 16 - 6; + last_found_pos = avio_tell(pb) - 16 - 6; if ((track >= 0 && track != cur_track) || (timestamp >= 0 && timestamp > cur_timestamp)) { - if (url_fseek(pb, last_pos, SEEK_SET) >= 0) + if (avio_seek(pb, last_pos, SEEK_SET) >= 0) goto start; } out: if (last_found_pos) - url_fseek(pb, last_found_pos, SEEK_SET); + avio_seek(pb, last_found_pos, SEEK_SET); return cur_timestamp; } @@ -422,13 +435,15 @@ static int gxf_packet(AVFormatContext *s, AVPacket *pkt) { AVIOContext *pb = s->pb; GXFPktType pkt_type; int pkt_len; - while (!url_feof(pb)) { + struct gxf_stream_info *si = s->priv_data; + + while (!pb->eof_reached) { AVStream *st; int track_type, track_id, ret; int field_nr, field_info, skip = 0; int stream_index; if (!parse_packet_header(pb, &pkt_type, &pkt_len)) { - if (!url_feof(pb)) + if (!pb->eof_reached) av_log(s, AV_LOG_ERROR, "sync lost\n"); return -1; } @@ -437,7 +452,7 @@ static int gxf_packet(AVFormatContext *s, AVPacket *pkt) { continue; } if (pkt_type != PKT_MEDIA) { - url_fskip(pb, pkt_len); + avio_skip(pb, pkt_len); continue; } if (pkt_len < 16) { @@ -456,13 +471,13 @@ static int gxf_packet(AVFormatContext *s, AVPacket *pkt) { avio_rb32(pb); // "timeline" field number avio_r8(pb); // flags avio_r8(pb); // reserved - if (st->codec->codec_id == CODEC_ID_PCM_S24LE || - st->codec->codec_id == CODEC_ID_PCM_S16LE) { + if (st->codec->codec_id == AV_CODEC_ID_PCM_S24LE || + st->codec->codec_id == AV_CODEC_ID_PCM_S16LE) { int first = field_info >> 16; int last = field_info & 0xffff; // last is exclusive int bps = av_get_bits_per_sample(st->codec->codec_id)>>3; if (first <= last && last*bps <= pkt_len) { - url_fskip(pb, first*bps); + avio_skip(pb, first*bps); skip = pkt_len - last*bps; pkt_len = (last-first)*bps; } else @@ -470,9 +485,14 @@ static int gxf_packet(AVFormatContext *s, AVPacket *pkt) { } ret = av_get_packet(pb, pkt, pkt_len); if (skip) - url_fskip(pb, skip); + avio_skip(pb, skip); pkt->stream_index = stream_index; pkt->dts = field_nr; + + //set duration manually for DV or else lavf misdetects the frame rate + if (st->codec->codec_id == AV_CODEC_ID_DVVIDEO) + pkt->duration = si->fields_per_frame; + return ret; } return AVERROR(EIO); @@ -495,7 +515,7 @@ static int gxf_seek(AVFormatContext *s, int stream_index, int64_t timestamp, int if (idx < st->nb_index_entries - 2) maxlen = st->index_entries[idx + 2].pos - pos; maxlen = FFMAX(maxlen, 200 * 1024); - res = url_fseek(s->pb, pos, SEEK_SET); + res = avio_seek(s->pb, pos, SEEK_SET); if (res < 0) return res; found = gxf_resync_media(s, maxlen, -1, timestamp); @@ -508,21 +528,20 @@ static int64_t gxf_read_timestamp(AVFormatContext *s, int stream_index, int64_t *pos, int64_t pos_limit) { AVIOContext *pb = s->pb; int64_t res; - if (url_fseek(pb, *pos, SEEK_SET) < 0) + if (avio_seek(pb, *pos, SEEK_SET) < 0) return AV_NOPTS_VALUE; res = gxf_resync_media(s, pos_limit - *pos, -1, -1); - *pos = url_ftell(pb); + *pos = avio_tell(pb); return res; } AVInputFormat ff_gxf_demuxer = { - "gxf", - NULL_IF_CONFIG_SMALL("GXF format"), - 0, - gxf_probe, - gxf_header, - gxf_packet, - NULL, - gxf_seek, - gxf_read_timestamp, + .name = "gxf", + .long_name = NULL_IF_CONFIG_SMALL("GXF (General eXchange Format)"), + .priv_data_size = sizeof(struct gxf_stream_info), + .read_probe = gxf_probe, + .read_header = gxf_header, + .read_packet = gxf_packet, + .read_seek = gxf_seek, + .read_timestamp = gxf_read_timestamp, };