| /* |
| * AVI muxer |
| * Copyright (c) 2000 Fabrice Bellard |
| * |
| * 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 DEBUG |
| |
| #include "avformat.h" |
| #include "internal.h" |
| #include "avi.h" |
| #include "avio_internal.h" |
| #include "riff.h" |
| #include "mpegts.h" |
| #include "libavformat/avlanguage.h" |
| #include "libavutil/avstring.h" |
| #include "libavutil/internal.h" |
| #include "libavutil/intreadwrite.h" |
| #include "libavutil/dict.h" |
| #include "libavutil/avassert.h" |
| #include "libavutil/timestamp.h" |
| #include "libavutil/opt.h" |
| #include "libavutil/pixdesc.h" |
| #include "libavcodec/raw.h" |
| |
| /* |
| * TODO: |
| * - fill all fields if non streamed (nb_frames for example) |
| */ |
| |
| typedef struct AVIIentry { |
| unsigned int flags, pos, len; |
| } AVIIentry; |
| |
| #define AVI_INDEX_CLUSTER_SIZE 16384 |
| |
| typedef struct AVIIndex { |
| int64_t indx_start; |
| int64_t audio_strm_offset; |
| int entry; |
| int ents_allocated; |
| int master_odml_riff_id_base; |
| AVIIentry** cluster; |
| } AVIIndex; |
| |
| typedef struct AVIContext { |
| const AVClass *class; |
| int64_t riff_start, movi_list, odml_list; |
| int64_t frames_hdr_all; |
| int riff_id; |
| int write_channel_mask; |
| } AVIContext; |
| |
| typedef struct AVIStream { |
| int64_t frames_hdr_strm; |
| int64_t audio_strm_length; |
| int packet_count; |
| int entry; |
| int max_size; |
| int sample_requested; |
| |
| int64_t last_dts; |
| |
| AVIIndex indexes; |
| } AVIStream; |
| |
| static int avi_write_packet(AVFormatContext *s, AVPacket *pkt); |
| |
| static inline AVIIentry *avi_get_ientry(const AVIIndex *idx, int ent_id) |
| { |
| int cl = ent_id / AVI_INDEX_CLUSTER_SIZE; |
| int id = ent_id % AVI_INDEX_CLUSTER_SIZE; |
| return &idx->cluster[cl][id]; |
| } |
| |
| static int64_t avi_start_new_riff(AVFormatContext *s, AVIOContext *pb, |
| const char *riff_tag, const char *list_tag) |
| { |
| AVIContext *avi = s->priv_data; |
| int64_t loff; |
| int i; |
| |
| avi->riff_id++; |
| for (i = 0; i < s->nb_streams; i++) { |
| AVIStream *avist = s->streams[i]->priv_data; |
| avist->indexes.audio_strm_offset = avist->audio_strm_length; |
| avist->indexes.entry = 0; |
| } |
| |
| avi->riff_start = ff_start_tag(pb, "RIFF"); |
| ffio_wfourcc(pb, riff_tag); |
| loff = ff_start_tag(pb, "LIST"); |
| ffio_wfourcc(pb, list_tag); |
| return loff; |
| } |
| |
| static char *avi_stream2fourcc(char *tag, int index, enum AVMediaType type) |
| { |
| tag[0] = '0' + index / 10; |
| tag[1] = '0' + index % 10; |
| if (type == AVMEDIA_TYPE_VIDEO) { |
| tag[2] = 'd'; |
| tag[3] = 'c'; |
| } else if (type == AVMEDIA_TYPE_SUBTITLE) { |
| // note: this is not an official code |
| tag[2] = 's'; |
| tag[3] = 'b'; |
| } else { |
| tag[2] = 'w'; |
| tag[3] = 'b'; |
| } |
| tag[4] = '\0'; |
| return tag; |
| } |
| |
| static int avi_write_counters(AVFormatContext *s, int riff_id) |
| { |
| AVIOContext *pb = s->pb; |
| AVIContext *avi = s->priv_data; |
| int n, au_byterate, au_ssize, au_scale, nb_frames = 0; |
| int64_t file_size; |
| AVCodecContext *stream; |
| |
| file_size = avio_tell(pb); |
| for (n = 0; n < s->nb_streams; n++) { |
| AVIStream *avist = s->streams[n]->priv_data; |
| |
| av_assert0(avist->frames_hdr_strm); |
| stream = s->streams[n]->codec; |
| avio_seek(pb, avist->frames_hdr_strm, SEEK_SET); |
| ff_parse_specific_params(s->streams[n], &au_byterate, &au_ssize, &au_scale); |
| if (au_ssize == 0) |
| avio_wl32(pb, avist->packet_count); |
| else |
| avio_wl32(pb, avist->audio_strm_length / au_ssize); |
| if (stream->codec_type == AVMEDIA_TYPE_VIDEO) |
| nb_frames = FFMAX(nb_frames, avist->packet_count); |
| } |
| if (riff_id == 1) { |
| av_assert0(avi->frames_hdr_all); |
| avio_seek(pb, avi->frames_hdr_all, SEEK_SET); |
| avio_wl32(pb, nb_frames); |
| } |
| avio_seek(pb, file_size, SEEK_SET); |
| |
| return 0; |
| } |
| |
| static void write_odml_master(AVFormatContext *s, int stream_index) |
| { |
| AVIOContext *pb = s->pb; |
| AVStream *st = s->streams[stream_index]; |
| AVCodecContext *enc = st->codec; |
| AVIStream *avist = st->priv_data; |
| unsigned char tag[5]; |
| int j; |
| |
| /* Starting to lay out AVI OpenDML master index. |
| * We want to make it JUNK entry for now, since we'd |
| * like to get away without making AVI an OpenDML one |
| * for compatibility reasons. */ |
| avist->indexes.indx_start = ff_start_tag(pb, "JUNK"); |
| avio_wl16(pb, 4); /* wLongsPerEntry */ |
| avio_w8(pb, 0); /* bIndexSubType (0 == frame index) */ |
| avio_w8(pb, 0); /* bIndexType (0 == AVI_INDEX_OF_INDEXES) */ |
| avio_wl32(pb, 0); /* nEntriesInUse (will fill out later on) */ |
| ffio_wfourcc(pb, avi_stream2fourcc(tag, stream_index, enc->codec_type)); |
| /* dwChunkId */ |
| avio_wl64(pb, 0); /* dwReserved[3] */ |
| avio_wl32(pb, 0); /* Must be 0. */ |
| for (j = 0; j < AVI_MASTER_INDEX_SIZE * 2; j++) |
| avio_wl64(pb, 0); |
| ff_end_tag(pb, avist->indexes.indx_start); |
| } |
| |
| static int avi_write_header(AVFormatContext *s) |
| { |
| AVIContext *avi = s->priv_data; |
| AVIOContext *pb = s->pb; |
| int bitrate, n, i, nb_frames, au_byterate, au_ssize, au_scale; |
| AVCodecContext *video_enc; |
| AVStream *video_st = NULL; |
| int64_t list1, list2, strh, strf; |
| AVDictionaryEntry *t = NULL; |
| int padding; |
| |
| if (s->nb_streams > AVI_MAX_STREAM_COUNT) { |
| av_log(s, AV_LOG_ERROR, "AVI does not support >%d streams\n", |
| AVI_MAX_STREAM_COUNT); |
| return AVERROR(EINVAL); |
| } |
| |
| for (n = 0; n < s->nb_streams; n++) { |
| s->streams[n]->priv_data = av_mallocz(sizeof(AVIStream)); |
| if (!s->streams[n]->priv_data) |
| return AVERROR(ENOMEM); |
| } |
| |
| /* header list */ |
| avi->riff_id = 0; |
| list1 = avi_start_new_riff(s, pb, "AVI ", "hdrl"); |
| |
| /* avi header */ |
| ffio_wfourcc(pb, "avih"); |
| avio_wl32(pb, 14 * 4); |
| bitrate = 0; |
| |
| video_enc = NULL; |
| for (n = 0; n < s->nb_streams; n++) { |
| AVCodecContext *codec = s->streams[n]->codec; |
| bitrate += codec->bit_rate; |
| if (codec->codec_type == AVMEDIA_TYPE_VIDEO) { |
| video_enc = codec; |
| video_st = s->streams[n]; |
| } |
| } |
| |
| nb_frames = 0; |
| |
| // TODO: should be avg_frame_rate |
| if (video_st) |
| avio_wl32(pb, (uint32_t) (INT64_C(1000000) * video_st->time_base.num / |
| video_st->time_base.den)); |
| else |
| avio_wl32(pb, 0); |
| avio_wl32(pb, bitrate / 8); /* XXX: not quite exact */ |
| avio_wl32(pb, 0); /* padding */ |
| if (!pb->seekable) |
| avio_wl32(pb, AVIF_TRUSTCKTYPE | AVIF_ISINTERLEAVED); /* flags */ |
| else |
| avio_wl32(pb, AVIF_TRUSTCKTYPE | AVIF_HASINDEX | AVIF_ISINTERLEAVED); /* flags */ |
| avi->frames_hdr_all = avio_tell(pb); /* remember this offset to fill later */ |
| avio_wl32(pb, nb_frames); /* nb frames, filled later */ |
| avio_wl32(pb, 0); /* initial frame */ |
| avio_wl32(pb, s->nb_streams); /* nb streams */ |
| avio_wl32(pb, 1024 * 1024); /* suggested buffer size */ |
| if (video_enc) { |
| avio_wl32(pb, video_enc->width); |
| avio_wl32(pb, video_enc->height); |
| } else { |
| avio_wl32(pb, 0); |
| avio_wl32(pb, 0); |
| } |
| avio_wl32(pb, 0); /* reserved */ |
| avio_wl32(pb, 0); /* reserved */ |
| avio_wl32(pb, 0); /* reserved */ |
| avio_wl32(pb, 0); /* reserved */ |
| |
| /* stream list */ |
| for (i = 0; i < n; i++) { |
| AVStream *st = s->streams[i]; |
| AVCodecContext *enc = st->codec; |
| AVIStream *avist = st->priv_data; |
| list2 = ff_start_tag(pb, "LIST"); |
| ffio_wfourcc(pb, "strl"); |
| |
| /* stream generic header */ |
| strh = ff_start_tag(pb, "strh"); |
| switch (enc->codec_type) { |
| case AVMEDIA_TYPE_SUBTITLE: |
| // XSUB subtitles behave like video tracks, other subtitles |
| // are not (yet) supported. |
| if (enc->codec_id != AV_CODEC_ID_XSUB) { |
| av_log(s, AV_LOG_ERROR, |
| "Subtitle streams other than DivX XSUB are not supported by the AVI muxer.\n"); |
| return AVERROR_PATCHWELCOME; |
| } |
| case AVMEDIA_TYPE_VIDEO: |
| ffio_wfourcc(pb, "vids"); |
| break; |
| case AVMEDIA_TYPE_AUDIO: |
| ffio_wfourcc(pb, "auds"); |
| break; |
| // case AVMEDIA_TYPE_TEXT: |
| // ffio_wfourcc(pb, "txts"); |
| // break; |
| case AVMEDIA_TYPE_DATA: |
| ffio_wfourcc(pb, "dats"); |
| break; |
| } |
| if (enc->codec_type == AVMEDIA_TYPE_VIDEO || |
| enc->codec_id == AV_CODEC_ID_XSUB) |
| avio_wl32(pb, enc->codec_tag); |
| else |
| avio_wl32(pb, 1); |
| avio_wl32(pb, 0); /* flags */ |
| avio_wl16(pb, 0); /* priority */ |
| avio_wl16(pb, 0); /* language */ |
| avio_wl32(pb, 0); /* initial frame */ |
| |
| ff_parse_specific_params(st, &au_byterate, &au_ssize, &au_scale); |
| |
| if ( enc->codec_type == AVMEDIA_TYPE_VIDEO |
| && enc->codec_id != AV_CODEC_ID_XSUB |
| && au_byterate > 1000LL*au_scale) { |
| au_byterate = 600; |
| au_scale = 1; |
| } |
| avpriv_set_pts_info(st, 64, au_scale, au_byterate); |
| if (enc->codec_id == AV_CODEC_ID_XSUB) |
| au_scale = au_byterate = 0; |
| |
| avio_wl32(pb, au_scale); /* scale */ |
| avio_wl32(pb, au_byterate); /* rate */ |
| |
| avio_wl32(pb, 0); /* start */ |
| /* remember this offset to fill later */ |
| avist->frames_hdr_strm = avio_tell(pb); |
| if (!pb->seekable) |
| /* FIXME: this may be broken, but who cares */ |
| avio_wl32(pb, AVI_MAX_RIFF_SIZE); |
| else |
| avio_wl32(pb, 0); /* length, XXX: filled later */ |
| |
| /* suggested buffer size, is set to largest chunk size in avi_write_trailer */ |
| if (enc->codec_type == AVMEDIA_TYPE_VIDEO) |
| avio_wl32(pb, 1024 * 1024); |
| else if (enc->codec_type == AVMEDIA_TYPE_AUDIO) |
| avio_wl32(pb, 12 * 1024); |
| else |
| avio_wl32(pb, 0); |
| avio_wl32(pb, -1); /* quality */ |
| avio_wl32(pb, au_ssize); /* sample size */ |
| avio_wl32(pb, 0); |
| avio_wl16(pb, enc->width); |
| avio_wl16(pb, enc->height); |
| ff_end_tag(pb, strh); |
| |
| if (enc->codec_type != AVMEDIA_TYPE_DATA) { |
| int ret, flags; |
| enum AVPixelFormat pix_fmt; |
| |
| strf = ff_start_tag(pb, "strf"); |
| switch (enc->codec_type) { |
| case AVMEDIA_TYPE_SUBTITLE: |
| /* XSUB subtitles behave like video tracks, other subtitles |
| * are not (yet) supported. */ |
| if (enc->codec_id != AV_CODEC_ID_XSUB) |
| break; |
| case AVMEDIA_TYPE_VIDEO: |
| /* WMP expects RGB 5:5:5 rawvideo in avi to have bpp set to 16. */ |
| if ( !enc->codec_tag |
| && enc->codec_id == AV_CODEC_ID_RAWVIDEO |
| && enc->pix_fmt == AV_PIX_FMT_RGB555LE |
| && enc->bits_per_coded_sample == 15) |
| enc->bits_per_coded_sample = 16; |
| ff_put_bmp_header(pb, enc, ff_codec_bmp_tags, 0, 0); |
| pix_fmt = avpriv_find_pix_fmt(avpriv_pix_fmt_bps_avi, |
| enc->bits_per_coded_sample); |
| if ( !enc->codec_tag |
| && enc->codec_id == AV_CODEC_ID_RAWVIDEO |
| && enc->pix_fmt != pix_fmt |
| && enc->pix_fmt != AV_PIX_FMT_NONE) |
| av_log(s, AV_LOG_ERROR, "%s rawvideo cannot be written to avi, output file will be unreadable\n", |
| av_get_pix_fmt_name(enc->pix_fmt)); |
| break; |
| case AVMEDIA_TYPE_AUDIO: |
| flags = (avi->write_channel_mask == 0) ? FF_PUT_WAV_HEADER_SKIP_CHANNELMASK : 0; |
| if ((ret = ff_put_wav_header(pb, enc, flags)) < 0) |
| return ret; |
| break; |
| default: |
| av_log(s, AV_LOG_ERROR, |
| "Invalid or not supported codec type '%s' found in the input\n", |
| (char *)av_x_if_null(av_get_media_type_string(enc->codec_type), "?")); |
| return AVERROR(EINVAL); |
| } |
| ff_end_tag(pb, strf); |
| if ((t = av_dict_get(st->metadata, "title", NULL, 0))) { |
| ff_riff_write_info_tag(s->pb, "strn", t->value); |
| t = NULL; |
| } |
| if (enc->codec_id == AV_CODEC_ID_XSUB |
| && (t = av_dict_get(s->streams[i]->metadata, "language", NULL, 0))) { |
| const char* langstr = av_convert_lang_to(t->value, AV_LANG_ISO639_1); |
| t = NULL; |
| if (langstr) { |
| char* str = av_asprintf("Subtitle - %s-xx;02", langstr); |
| if (!str) |
| return AVERROR(ENOMEM); |
| ff_riff_write_info_tag(s->pb, "strn", str); |
| av_free(str); |
| } |
| } |
| } |
| |
| if (pb->seekable) { |
| write_odml_master(s, i); |
| } |
| |
| if (enc->codec_type == AVMEDIA_TYPE_VIDEO && |
| st->sample_aspect_ratio.num > 0 && |
| st->sample_aspect_ratio.den > 0) { |
| int vprp = ff_start_tag(pb, "vprp"); |
| AVRational dar = av_mul_q(st->sample_aspect_ratio, |
| (AVRational) { enc->width, |
| enc->height }); |
| int num, den; |
| av_reduce(&num, &den, dar.num, dar.den, 0xFFFF); |
| |
| avio_wl32(pb, 0); // video format = unknown |
| avio_wl32(pb, 0); // video standard = unknown |
| // TODO: should be avg_frame_rate |
| avio_wl32(pb, (2LL*st->time_base.den + st->time_base.num - 1) / (2LL * st->time_base.num)); |
| avio_wl32(pb, enc->width); |
| avio_wl32(pb, enc->height); |
| avio_wl16(pb, den); |
| avio_wl16(pb, num); |
| avio_wl32(pb, enc->width); |
| avio_wl32(pb, enc->height); |
| avio_wl32(pb, 1); // progressive FIXME |
| |
| avio_wl32(pb, enc->height); |
| avio_wl32(pb, enc->width); |
| avio_wl32(pb, enc->height); |
| avio_wl32(pb, enc->width); |
| avio_wl32(pb, 0); |
| avio_wl32(pb, 0); |
| |
| avio_wl32(pb, 0); |
| avio_wl32(pb, 0); |
| ff_end_tag(pb, vprp); |
| } |
| |
| ff_end_tag(pb, list2); |
| } |
| |
| if (pb->seekable) { |
| /* AVI could become an OpenDML one, if it grows beyond 2Gb range */ |
| avi->odml_list = ff_start_tag(pb, "JUNK"); |
| ffio_wfourcc(pb, "odml"); |
| ffio_wfourcc(pb, "dmlh"); |
| avio_wl32(pb, 248); |
| for (i = 0; i < 248; i += 4) |
| avio_wl32(pb, 0); |
| ff_end_tag(pb, avi->odml_list); |
| } |
| |
| ff_end_tag(pb, list1); |
| |
| ff_riff_write_info(s); |
| |
| |
| padding = s->metadata_header_padding; |
| if (padding < 0) |
| padding = 1016; |
| |
| /* some padding for easier tag editing */ |
| if (padding) { |
| list2 = ff_start_tag(pb, "JUNK"); |
| for (i = padding; i > 0; i -= 4) |
| avio_wl32(pb, 0); |
| ff_end_tag(pb, list2); |
| } |
| |
| avi->movi_list = ff_start_tag(pb, "LIST"); |
| ffio_wfourcc(pb, "movi"); |
| |
| avio_flush(pb); |
| |
| return 0; |
| } |
| |
| static void update_odml_entry(AVFormatContext *s, int stream_index, int64_t ix, int size) |
| { |
| AVIOContext *pb = s->pb; |
| AVIContext *avi = s->priv_data; |
| AVIStream *avist = s->streams[stream_index]->priv_data; |
| int64_t pos; |
| int au_byterate, au_ssize, au_scale; |
| |
| avio_flush(pb); |
| pos = avio_tell(pb); |
| |
| /* Updating one entry in the AVI OpenDML master index */ |
| avio_seek(pb, avist->indexes.indx_start - 8, SEEK_SET); |
| ffio_wfourcc(pb, "indx"); /* enabling this entry */ |
| avio_skip(pb, 8); |
| avio_wl32(pb, avi->riff_id - avist->indexes.master_odml_riff_id_base); /* nEntriesInUse */ |
| avio_skip(pb, 16 * (avi->riff_id - avist->indexes.master_odml_riff_id_base)); |
| avio_wl64(pb, ix); /* qwOffset */ |
| avio_wl32(pb, size); /* dwSize */ |
| ff_parse_specific_params(s->streams[stream_index], &au_byterate, &au_ssize, &au_scale); |
| if (s->streams[stream_index]->codec->codec_type == AVMEDIA_TYPE_AUDIO && au_ssize > 0) { |
| uint32_t audio_segm_size = (avist->audio_strm_length - avist->indexes.audio_strm_offset); |
| if ((audio_segm_size % au_ssize > 0) && !avist->sample_requested) { |
| avpriv_request_sample(s, "OpenDML index duration for audio packets with partial frames"); |
| avist->sample_requested = 1; |
| } |
| avio_wl32(pb, audio_segm_size / au_ssize); /* dwDuration (sample count) */ |
| } else |
| avio_wl32(pb, avist->indexes.entry); /* dwDuration (packet count) */ |
| |
| avio_seek(pb, pos, SEEK_SET); |
| } |
| |
| static int avi_write_ix(AVFormatContext *s) |
| { |
| AVIOContext *pb = s->pb; |
| AVIContext *avi = s->priv_data; |
| char tag[5]; |
| char ix_tag[] = "ix00"; |
| int i, j; |
| |
| av_assert0(pb->seekable); |
| |
| for (i = 0; i < s->nb_streams; i++) { |
| AVIStream *avist = s->streams[i]->priv_data; |
| if (avi->riff_id - avist->indexes.master_odml_riff_id_base == AVI_MASTER_INDEX_SIZE) { |
| int64_t pos; |
| int size = 8+2+1+1+4+8+4+4+16*AVI_MASTER_INDEX_SIZE; |
| |
| pos = avio_tell(pb); |
| update_odml_entry(s, i, pos, size); |
| write_odml_master(s, i); |
| av_assert1(avio_tell(pb) - pos == size); |
| avist->indexes.master_odml_riff_id_base = avi->riff_id - 1; |
| } |
| av_assert0(avi->riff_id - avist->indexes.master_odml_riff_id_base < AVI_MASTER_INDEX_SIZE); |
| } |
| |
| for (i = 0; i < s->nb_streams; i++) { |
| AVIStream *avist = s->streams[i]->priv_data; |
| int64_t ix; |
| |
| avi_stream2fourcc(tag, i, s->streams[i]->codec->codec_type); |
| ix_tag[3] = '0' + i; |
| |
| /* Writing AVI OpenDML leaf index chunk */ |
| ix = avio_tell(pb); |
| ffio_wfourcc(pb, ix_tag); /* ix?? */ |
| avio_wl32(pb, avist->indexes.entry * 8 + 24); |
| /* chunk size */ |
| avio_wl16(pb, 2); /* wLongsPerEntry */ |
| avio_w8(pb, 0); /* bIndexSubType (0 == frame index) */ |
| avio_w8(pb, 1); /* bIndexType (1 == AVI_INDEX_OF_CHUNKS) */ |
| avio_wl32(pb, avist->indexes.entry); |
| /* nEntriesInUse */ |
| ffio_wfourcc(pb, tag); /* dwChunkId */ |
| avio_wl64(pb, avi->movi_list); /* qwBaseOffset */ |
| avio_wl32(pb, 0); /* dwReserved_3 (must be 0) */ |
| |
| for (j = 0; j < avist->indexes.entry; j++) { |
| AVIIentry *ie = avi_get_ientry(&avist->indexes, j); |
| avio_wl32(pb, ie->pos + 8); |
| avio_wl32(pb, ((uint32_t) ie->len & ~0x80000000) | |
| (ie->flags & 0x10 ? 0 : 0x80000000)); |
| } |
| |
| update_odml_entry(s, i, ix, avio_tell(pb) - ix); |
| } |
| return 0; |
| } |
| |
| static int avi_write_idx1(AVFormatContext *s) |
| { |
| AVIOContext *pb = s->pb; |
| AVIContext *avi = s->priv_data; |
| int64_t idx_chunk; |
| int i; |
| char tag[5]; |
| |
| if (pb->seekable) { |
| AVIStream *avist; |
| AVIIentry *ie = 0, *tie; |
| int empty, stream_id = -1; |
| |
| idx_chunk = ff_start_tag(pb, "idx1"); |
| for (i = 0; i < s->nb_streams; i++) { |
| avist = s->streams[i]->priv_data; |
| avist->entry = 0; |
| } |
| |
| do { |
| empty = 1; |
| for (i = 0; i < s->nb_streams; i++) { |
| avist = s->streams[i]->priv_data; |
| if (avist->indexes.entry <= avist->entry) |
| continue; |
| |
| tie = avi_get_ientry(&avist->indexes, avist->entry); |
| if (empty || tie->pos < ie->pos) { |
| ie = tie; |
| stream_id = i; |
| } |
| empty = 0; |
| } |
| if (!empty) { |
| avist = s->streams[stream_id]->priv_data; |
| avi_stream2fourcc(tag, stream_id, |
| s->streams[stream_id]->codec->codec_type); |
| ffio_wfourcc(pb, tag); |
| avio_wl32(pb, ie->flags); |
| avio_wl32(pb, ie->pos); |
| avio_wl32(pb, ie->len); |
| avist->entry++; |
| } |
| } while (!empty); |
| ff_end_tag(pb, idx_chunk); |
| |
| avi_write_counters(s, avi->riff_id); |
| } |
| return 0; |
| } |
| |
| static int write_skip_frames(AVFormatContext *s, int stream_index, int64_t dts) |
| { |
| AVIStream *avist = s->streams[stream_index]->priv_data; |
| AVCodecContext *enc = s->streams[stream_index]->codec; |
| |
| ff_dlog(s, "dts:%s packet_count:%d stream_index:%d\n", av_ts2str(dts), avist->packet_count, stream_index); |
| while (enc->block_align == 0 && dts != AV_NOPTS_VALUE && |
| dts > avist->packet_count && enc->codec_id != AV_CODEC_ID_XSUB && avist->packet_count) { |
| AVPacket empty_packet; |
| |
| if (dts - avist->packet_count > 60000) { |
| av_log(s, AV_LOG_ERROR, "Too large number of skipped frames %"PRId64" > 60000\n", dts - avist->packet_count); |
| return AVERROR(EINVAL); |
| } |
| |
| av_init_packet(&empty_packet); |
| empty_packet.size = 0; |
| empty_packet.data = NULL; |
| empty_packet.stream_index = stream_index; |
| avi_write_packet(s, &empty_packet); |
| ff_dlog(s, "dup dts:%s packet_count:%d\n", av_ts2str(dts), avist->packet_count); |
| } |
| |
| return 0; |
| } |
| |
| static int avi_write_packet(AVFormatContext *s, AVPacket *pkt) |
| { |
| unsigned char tag[5]; |
| unsigned int flags = 0; |
| const int stream_index = pkt->stream_index; |
| int size = pkt->size; |
| AVIContext *avi = s->priv_data; |
| AVIOContext *pb = s->pb; |
| AVIStream *avist = s->streams[stream_index]->priv_data; |
| AVCodecContext *enc = s->streams[stream_index]->codec; |
| int ret; |
| |
| if (enc->codec_id == AV_CODEC_ID_H264 && enc->codec_tag == MKTAG('H','2','6','4') && pkt->size) { |
| ret = ff_check_h264_startcode(s, s->streams[stream_index], pkt); |
| if (ret < 0) |
| return ret; |
| } |
| |
| if ((ret = write_skip_frames(s, stream_index, pkt->dts)) < 0) |
| return ret; |
| |
| if (pkt->dts != AV_NOPTS_VALUE) |
| avist->last_dts = pkt->dts + pkt->duration; |
| |
| avist->packet_count++; |
| |
| // Make sure to put an OpenDML chunk when the file size exceeds the limits |
| if (pb->seekable && |
| (avio_tell(pb) - avi->riff_start > AVI_MAX_RIFF_SIZE)) { |
| avi_write_ix(s); |
| ff_end_tag(pb, avi->movi_list); |
| |
| if (avi->riff_id == 1) |
| avi_write_idx1(s); |
| |
| ff_end_tag(pb, avi->riff_start); |
| avi->movi_list = avi_start_new_riff(s, pb, "AVIX", "movi"); |
| } |
| |
| avi_stream2fourcc(tag, stream_index, enc->codec_type); |
| if (pkt->flags & AV_PKT_FLAG_KEY) |
| flags = 0x10; |
| if (enc->codec_type == AVMEDIA_TYPE_AUDIO) |
| avist->audio_strm_length += size; |
| |
| if (s->pb->seekable) { |
| AVIIndex *idx = &avist->indexes; |
| int cl = idx->entry / AVI_INDEX_CLUSTER_SIZE; |
| int id = idx->entry % AVI_INDEX_CLUSTER_SIZE; |
| if (idx->ents_allocated <= idx->entry) { |
| idx->cluster = av_realloc_f(idx->cluster, sizeof(void*), cl+1); |
| if (!idx->cluster) { |
| idx->ents_allocated = 0; |
| idx->entry = 0; |
| return AVERROR(ENOMEM); |
| } |
| idx->cluster[cl] = |
| av_malloc(AVI_INDEX_CLUSTER_SIZE * sizeof(AVIIentry)); |
| if (!idx->cluster[cl]) |
| return AVERROR(ENOMEM); |
| idx->ents_allocated += AVI_INDEX_CLUSTER_SIZE; |
| } |
| |
| idx->cluster[cl][id].flags = flags; |
| idx->cluster[cl][id].pos = avio_tell(pb) - avi->movi_list; |
| idx->cluster[cl][id].len = size; |
| avist->max_size = FFMAX(avist->max_size, size); |
| idx->entry++; |
| } |
| |
| avio_write(pb, tag, 4); |
| avio_wl32(pb, size); |
| avio_write(pb, pkt->data, size); |
| if (size & 1) |
| avio_w8(pb, 0); |
| |
| return 0; |
| } |
| |
| static int avi_write_trailer(AVFormatContext *s) |
| { |
| AVIContext *avi = s->priv_data; |
| AVIOContext *pb = s->pb; |
| int res = 0; |
| int i, j, n, nb_frames; |
| int64_t file_size; |
| |
| for (i = 0; i < s->nb_streams; i++) { |
| AVIStream *avist = s->streams[i]->priv_data; |
| write_skip_frames(s, i, avist->last_dts); |
| } |
| |
| if (pb->seekable) { |
| if (avi->riff_id == 1) { |
| ff_end_tag(pb, avi->movi_list); |
| res = avi_write_idx1(s); |
| ff_end_tag(pb, avi->riff_start); |
| } else { |
| avi_write_ix(s); |
| ff_end_tag(pb, avi->movi_list); |
| ff_end_tag(pb, avi->riff_start); |
| |
| file_size = avio_tell(pb); |
| avio_seek(pb, avi->odml_list - 8, SEEK_SET); |
| ffio_wfourcc(pb, "LIST"); /* Making this AVI OpenDML one */ |
| avio_skip(pb, 16); |
| |
| for (n = nb_frames = 0; n < s->nb_streams; n++) { |
| AVCodecContext *stream = s->streams[n]->codec; |
| AVIStream *avist = s->streams[n]->priv_data; |
| |
| if (stream->codec_type == AVMEDIA_TYPE_VIDEO) { |
| if (nb_frames < avist->packet_count) |
| nb_frames = avist->packet_count; |
| } else { |
| if (stream->codec_id == AV_CODEC_ID_MP2 || |
| stream->codec_id == AV_CODEC_ID_MP3) |
| nb_frames += avist->packet_count; |
| } |
| } |
| avio_wl32(pb, nb_frames); |
| avio_seek(pb, file_size, SEEK_SET); |
| |
| avi_write_counters(s, avi->riff_id); |
| } |
| } |
| |
| for (i = 0; i < s->nb_streams; i++) { |
| AVIStream *avist = s->streams[i]->priv_data; |
| for (j = 0; j < avist->indexes.ents_allocated / AVI_INDEX_CLUSTER_SIZE; j++) |
| av_freep(&avist->indexes.cluster[j]); |
| av_freep(&avist->indexes.cluster); |
| avist->indexes.ents_allocated = avist->indexes.entry = 0; |
| if (pb->seekable) { |
| avio_seek(pb, avist->frames_hdr_strm + 4, SEEK_SET); |
| avio_wl32(pb, avist->max_size); |
| } |
| } |
| |
| return res; |
| } |
| |
| #define OFFSET(x) offsetof(AVIContext, x) |
| #define ENC AV_OPT_FLAG_ENCODING_PARAM |
| static const AVOption options[] = { |
| { "write_channel_mask", "write channel mask into wave format header", OFFSET(write_channel_mask), AV_OPT_TYPE_BOOL, { .i64 = 1 }, 0, 1, ENC }, |
| { NULL }, |
| }; |
| |
| static const AVClass avi_muxer_class = { |
| .class_name = "AVI muxer", |
| .item_name = av_default_item_name, |
| .option = options, |
| .version = LIBAVUTIL_VERSION_INT, |
| }; |
| |
| AVOutputFormat ff_avi_muxer = { |
| .name = "avi", |
| .long_name = NULL_IF_CONFIG_SMALL("AVI (Audio Video Interleaved)"), |
| .mime_type = "video/x-msvideo", |
| .extensions = "avi", |
| .priv_data_size = sizeof(AVIContext), |
| .audio_codec = CONFIG_LIBMP3LAME ? AV_CODEC_ID_MP3 : AV_CODEC_ID_AC3, |
| .video_codec = AV_CODEC_ID_MPEG4, |
| .write_header = avi_write_header, |
| .write_packet = avi_write_packet, |
| .write_trailer = avi_write_trailer, |
| .codec_tag = (const AVCodecTag * const []) { |
| ff_codec_bmp_tags, ff_codec_wav_tags, 0 |
| }, |
| .priv_class = &avi_muxer_class, |
| }; |
