| /* |
| * 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 |
| */ |
| |
| #include <math.h> |
| |
| #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/avutil.h" |
| #include "libavutil/internal.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 { |
| char tag[4]; |
| unsigned int flags; |
| unsigned int pos; |
| unsigned int len; |
| } AVIIentry; |
| |
| #define AVI_INDEX_CLUSTER_SIZE 16384 |
| #define AVI_MASTER_INDEX_PREFIX_SIZE (8+2+1+1+4+8+4+4) |
| #define AVI_MASTER_INDEX_ENTRY_SIZE 16 /* bytes per entry */ |
| #define AVI_MASTER_INDEX_SIZE_DEFAULT 256 /* number of entries */ |
| |
| 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 reserve_index_space; |
| int master_index_max_size; |
| int write_channel_mask; |
| int flipped_raw_rgb; |
| } 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; |
| |
| int64_t strh_flags_offset; |
| |
| uint32_t palette[AVPALETTE_COUNT]; |
| uint32_t old_palette[AVPALETTE_COUNT]; |
| int64_t pal_offset; |
| } AVIStream; |
| |
| static int avi_write_packet_internal(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 int avi_add_ientry(AVFormatContext *s, int stream_index, char *tag, |
| unsigned int flags, unsigned int size) |
| { |
| AVIContext *avi = s->priv_data; |
| AVIOContext *pb = s->pb; |
| AVIStream *avist = s->streams[stream_index]->priv_data; |
| 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; |
| } |
| |
| if (tag) |
| memcpy(idx->cluster[cl][id].tag, tag, 4); |
| else |
| memset(idx->cluster[cl][id].tag, 0, 4); |
| 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++; |
| |
| return 0; |
| } |
| |
| static av_cold int avi_init(struct AVFormatContext *s) |
| { |
| AVIContext *avi = s->priv_data; |
| |
| if (avi->reserve_index_space > 0) { |
| avi->master_index_max_size = (avi->reserve_index_space - AVI_MASTER_INDEX_PREFIX_SIZE) / AVI_MASTER_INDEX_ENTRY_SIZE; |
| avi->master_index_max_size = FFMAX(avi->master_index_max_size, 16); |
| } else |
| avi->master_index_max_size = AVI_MASTER_INDEX_SIZE_DEFAULT; |
| av_log(s, AV_LOG_DEBUG, "reserve_index_space:%d master_index_max_size:%d\n", |
| avi->reserve_index_space, avi->master_index_max_size); |
| |
| return 1; /* stream initialization continues in avi_write_header */ |
| } |
| |
| 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; |
| AVCodecParameters *par; |
| |
| 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); |
| par = s->streams[n]->codecpar; |
| 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 (par->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; |
| AVIContext *avi = s->priv_data; |
| AVStream *st = s->streams[stream_index]; |
| AVCodecParameters *par = st->codecpar; |
| 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, par->codec_type)); |
| /* dwChunkId */ |
| avio_wl64(pb, 0); /* dwReserved[3] */ |
| avio_wl32(pb, 0); /* Must be 0. */ |
| for (j = 0; j < avi->master_index_max_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; |
| int64_t max_stream_duration = 0; |
| AVCodecParameters *video_par; |
| 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 " |
| ">"AV_STRINGIFY(AVI_MAX_STREAM_COUNT)" streams\n"); |
| 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_par = NULL; |
| for (n = 0; n < s->nb_streams; n++) { |
| AVCodecParameters *par = s->streams[n]->codecpar; |
| AVStream *st = s->streams[n]; |
| bitrate = FFMIN(bitrate + par->bit_rate, INT32_MAX); |
| if (st->duration > 0) { |
| int64_t stream_duration = av_rescale_q(st->duration, st->time_base, AV_TIME_BASE_Q); |
| max_stream_duration = FFMAX(stream_duration, max_stream_duration); |
| } |
| if (par->codec_type == AVMEDIA_TYPE_VIDEO) { |
| video_par = par; |
| video_st = st; |
| } |
| } |
| |
| /* guess master index size based on bitrate and duration */ |
| if (!avi->reserve_index_space) { |
| double duration_est, filesize_est; |
| if (s->duration > 0) |
| duration_est = (double)s->duration / AV_TIME_BASE; |
| else if (max_stream_duration > 0) |
| duration_est = (double)max_stream_duration / AV_TIME_BASE; |
| else |
| duration_est = 10 * 60 * 60; /* default to 10 hours */ |
| filesize_est = duration_est * (bitrate / 8) * 1.10; /* add 10% safety margin for muxer+bitrate */ |
| avi->master_index_max_size = FFMAX((int)ceil(filesize_est / AVI_MAX_RIFF_SIZE) + 1, |
| avi->master_index_max_size); |
| av_log(s, AV_LOG_DEBUG, "duration_est:%0.3f, filesize_est:%0.1fGiB, master_index_max_size:%d\n", |
| duration_est, filesize_est / (1024*1024*1024), avi->master_index_max_size); |
| } |
| |
| 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_SEEKABLE_NORMAL)) |
| 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_par) { |
| avio_wl32(pb, video_par->width); |
| avio_wl32(pb, video_par->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]; |
| AVCodecParameters *par = st->codecpar; |
| 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 (par->codec_type) { |
| case AVMEDIA_TYPE_SUBTITLE: |
| // XSUB subtitles behave like video tracks, other subtitles |
| // are not (yet) supported. |
| if (par->codec_id != AV_CODEC_ID_XSUB) { |
| avpriv_report_missing_feature(s, "Subtitle streams other than DivX XSUB"); |
| 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 (par->codec_type == AVMEDIA_TYPE_VIDEO || |
| par->codec_id == AV_CODEC_ID_XSUB) |
| avio_wl32(pb, par->codec_tag); |
| else |
| avio_wl32(pb, 1); |
| avist->strh_flags_offset = avio_tell(pb); |
| 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 ( par->codec_type == AVMEDIA_TYPE_VIDEO |
| && par->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 (par->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 & AVIO_SEEKABLE_NORMAL)) |
| /* 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 (par->codec_type == AVMEDIA_TYPE_VIDEO) |
| avio_wl32(pb, 1024 * 1024); |
| else if (par->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, par->width); |
| avio_wl16(pb, par->height); |
| ff_end_tag(pb, strh); |
| |
| if (par->codec_type != AVMEDIA_TYPE_DATA) { |
| int ret, flags; |
| enum AVPixelFormat pix_fmt; |
| |
| strf = ff_start_tag(pb, "strf"); |
| switch (par->codec_type) { |
| case AVMEDIA_TYPE_SUBTITLE: |
| /* XSUB subtitles behave like video tracks, other subtitles |
| * are not (yet) supported. */ |
| if (par->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 ( !par->codec_tag |
| && par->codec_id == AV_CODEC_ID_RAWVIDEO |
| && par->format == AV_PIX_FMT_RGB555LE |
| && par->bits_per_coded_sample == 15) |
| par->bits_per_coded_sample = 16; |
| avist->pal_offset = avio_tell(pb) + 40; |
| ff_put_bmp_header(pb, par, 0, 0, avi->flipped_raw_rgb); |
| pix_fmt = avpriv_find_pix_fmt(avpriv_pix_fmt_bps_avi, |
| par->bits_per_coded_sample); |
| if ( !par->codec_tag |
| && par->codec_id == AV_CODEC_ID_RAWVIDEO |
| && par->format != pix_fmt |
| && par->format != 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(par->format)); |
| |
| if (par->format == AV_PIX_FMT_PAL8) { |
| if (par->bits_per_coded_sample < 0 || par->bits_per_coded_sample > 8) { |
| av_log(s, AV_LOG_ERROR, "PAL8 with %d bps is not allowed\n", par->bits_per_coded_sample); |
| return AVERROR(EINVAL); |
| } |
| } |
| |
| break; |
| case AVMEDIA_TYPE_AUDIO: |
| flags = (avi->write_channel_mask == 0) ? FF_PUT_WAV_HEADER_SKIP_CHANNELMASK : 0; |
| if ((ret = ff_put_wav_header(s, pb, par, 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(par->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 (par->codec_id == AV_CODEC_ID_XSUB |
| && (t = av_dict_get(s->streams[i]->metadata, "language", NULL, 0))) { |
| const char* langstr = ff_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 & AVIO_SEEKABLE_NORMAL) { |
| write_odml_master(s, i); |
| } |
| |
| if (par->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) { par->width, |
| par->height }); |
| int num, den, fields, i; |
| av_reduce(&num, &den, dar.num, dar.den, 0xFFFF); |
| if (par->field_order == AV_FIELD_TT || par->field_order == AV_FIELD_BB || |
| par->field_order == AV_FIELD_TB || par->field_order == AV_FIELD_BT) { |
| fields = 2; // interlaced |
| } else { |
| fields = 1; // progressive |
| } |
| |
| 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, par->width); |
| avio_wl32(pb, par->height); |
| avio_wl16(pb, den); |
| avio_wl16(pb, num); |
| avio_wl32(pb, par->width); |
| avio_wl32(pb, par->height); |
| avio_wl32(pb, fields); // fields per frame |
| |
| for (i = 0; i < fields; i++) { |
| int start_line; |
| // OpenDML v1.02 is not very specific on what value to use for |
| // start_line when frame data is not coming from a capturing device, |
| // so just use 0/1 depending on the field order for interlaced frames |
| if (par->field_order == AV_FIELD_TT || par->field_order == AV_FIELD_TB) { |
| start_line = (i == 0) ? 0 : 1; |
| } else if (par->field_order == AV_FIELD_BB || par->field_order == AV_FIELD_BT) { |
| start_line = (i == 0) ? 1 : 0; |
| } else { |
| start_line = 0; |
| } |
| |
| avio_wl32(pb, par->height / fields); // compressed bitmap height |
| avio_wl32(pb, par->width); // compressed bitmap width |
| avio_wl32(pb, par->height / fields); // valid bitmap height |
| avio_wl32(pb, par->width); // valid bitmap width |
| avio_wl32(pb, 0); // valid bitmap X offset |
| avio_wl32(pb, 0); // valid bitmap Y offset |
| avio_wl32(pb, 0); // valid X offset in T |
| avio_wl32(pb, start_line); // valid Y start line |
| } |
| ff_end_tag(pb, vprp); |
| } |
| |
| ff_end_tag(pb, list2); |
| } |
| |
| if (pb->seekable & AVIO_SEEKABLE_NORMAL) { |
| /* 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"); |
| |
| 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; |
| |
| 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]->codecpar->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 & AVIO_SEEKABLE_NORMAL); |
| |
| 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_max_size) { |
| int64_t pos; |
| int size = AVI_MASTER_INDEX_PREFIX_SIZE + AVI_MASTER_INDEX_ENTRY_SIZE * avi->master_index_max_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_max_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]->codecpar->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 & AVIO_SEEKABLE_NORMAL) { |
| 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; |
| if (*ie->tag) |
| ffio_wfourcc(pb, ie->tag); |
| else { |
| avi_stream2fourcc(tag, stream_id, |
| s->streams[stream_id]->codecpar->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; |
| AVCodecParameters *par = s->streams[stream_index]->codecpar; |
| |
| ff_dlog(s, "dts:%s packet_count:%d stream_index:%d\n", av_ts2str(dts), avist->packet_count, stream_index); |
| while (par->block_align == 0 && dts != AV_NOPTS_VALUE && |
| dts > avist->packet_count && par->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_internal(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) |
| { |
| const int stream_index = pkt->stream_index; |
| AVCodecParameters *par = s->streams[stream_index]->codecpar; |
| int ret; |
| |
| if (par->codec_id == AV_CODEC_ID_H264 && par->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->size) |
| return avi_write_packet_internal(s, pkt); /* Passthrough */ |
| |
| if (par->codec_type == AVMEDIA_TYPE_VIDEO) { |
| AVIStream *avist = s->streams[stream_index]->priv_data; |
| AVIOContext *pb = s->pb; |
| AVPacket *opkt = pkt; |
| int reshuffle_ret; |
| if (par->codec_id == AV_CODEC_ID_RAWVIDEO && par->codec_tag == 0) { |
| int64_t bpc = par->bits_per_coded_sample != 15 ? par->bits_per_coded_sample : 16; |
| int expected_stride = ((par->width * bpc + 31) >> 5)*4; |
| reshuffle_ret = ff_reshuffle_raw_rgb(s, &pkt, par, expected_stride); |
| if (reshuffle_ret < 0) |
| return reshuffle_ret; |
| } else |
| reshuffle_ret = 0; |
| if (par->format == AV_PIX_FMT_PAL8) { |
| ret = ff_get_packet_palette(s, opkt, reshuffle_ret, avist->palette); |
| if (ret < 0) |
| goto fail; |
| if (ret) { |
| int pal_size = 1 << par->bits_per_coded_sample; |
| int pc_tag, i; |
| |
| av_assert0(par->bits_per_coded_sample >= 0 && par->bits_per_coded_sample <= 8); |
| |
| if ((pb->seekable & AVIO_SEEKABLE_NORMAL) && avist->pal_offset) { |
| int64_t cur_offset = avio_tell(pb); |
| avio_seek(pb, avist->pal_offset, SEEK_SET); |
| for (i = 0; i < pal_size; i++) { |
| uint32_t v = avist->palette[i]; |
| avio_wl32(pb, v & 0xffffff); |
| } |
| avio_seek(pb, cur_offset, SEEK_SET); |
| memcpy(avist->old_palette, avist->palette, pal_size * 4); |
| avist->pal_offset = 0; |
| } |
| if (memcmp(avist->palette, avist->old_palette, pal_size * 4)) { |
| unsigned char tag[5]; |
| avi_stream2fourcc(tag, stream_index, par->codec_type); |
| tag[2] = 'p'; tag[3] = 'c'; |
| if (s->pb->seekable & AVIO_SEEKABLE_NORMAL) { |
| if (avist->strh_flags_offset) { |
| int64_t cur_offset = avio_tell(pb); |
| avio_seek(pb, avist->strh_flags_offset, SEEK_SET); |
| avio_wl32(pb, AVISF_VIDEO_PALCHANGES); |
| avio_seek(pb, cur_offset, SEEK_SET); |
| avist->strh_flags_offset = 0; |
| } |
| ret = avi_add_ientry(s, stream_index, tag, AVIIF_NO_TIME, |
| pal_size * 4 + 4); |
| if (ret < 0) |
| goto fail; |
| } |
| pc_tag = ff_start_tag(pb, tag); |
| avio_w8(pb, 0); |
| avio_w8(pb, pal_size & 0xFF); |
| avio_wl16(pb, 0); // reserved |
| for (i = 0; i < pal_size; i++) { |
| uint32_t v = avist->palette[i]; |
| avio_wb32(pb, v<<8); |
| } |
| ff_end_tag(pb, pc_tag); |
| memcpy(avist->old_palette, avist->palette, pal_size * 4); |
| } |
| } |
| } |
| if (reshuffle_ret) { |
| ret = avi_write_packet_internal(s, pkt); |
| |
| fail: |
| if (reshuffle_ret) |
| av_packet_free(&pkt); |
| return ret; |
| } |
| } |
| |
| return avi_write_packet_internal(s, pkt); |
| } |
| |
| static int avi_write_packet_internal(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; |
| AVCodecParameters *par = s->streams[stream_index]->codecpar; |
| |
| 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_SEEKABLE_NORMAL) && |
| (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, par->codec_type); |
| if (pkt->flags & AV_PKT_FLAG_KEY) |
| flags = 0x10; |
| if (par->codec_type == AVMEDIA_TYPE_AUDIO) |
| avist->audio_strm_length += size; |
| |
| if (s->pb->seekable & AVIO_SEEKABLE_NORMAL) { |
| int ret; |
| ret = avi_add_ientry(s, stream_index, NULL, flags, size); |
| if (ret < 0) |
| return ret; |
| } |
| |
| 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, 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 & AVIO_SEEKABLE_NORMAL) { |
| 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++) { |
| AVCodecParameters *par = s->streams[n]->codecpar; |
| AVIStream *avist = s->streams[n]->priv_data; |
| |
| if (par->codec_type == AVMEDIA_TYPE_VIDEO) { |
| if (nb_frames < avist->packet_count) |
| nb_frames = avist->packet_count; |
| } else { |
| if (par->codec_id == AV_CODEC_ID_MP2 || |
| par->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); |
| } |
| } |
| |
| if (avi->riff_id >= avi->master_index_max_size) { |
| int index_space = AVI_MASTER_INDEX_PREFIX_SIZE + |
| AVI_MASTER_INDEX_ENTRY_SIZE * avi->riff_id; |
| av_log(s, AV_LOG_WARNING, "Output file not strictly OpenDML compliant, " |
| "consider re-muxing with 'reserve_index_space' option value >= %d\n", |
| index_space); |
| } |
| |
| for (i = 0; i < s->nb_streams; i++) { |
| AVIStream *avist = s->streams[i]->priv_data; |
| if (pb->seekable & AVIO_SEEKABLE_NORMAL) { |
| avio_seek(pb, avist->frames_hdr_strm + 4, SEEK_SET); |
| avio_wl32(pb, avist->max_size); |
| } |
| } |
| |
| return res; |
| } |
| |
| static void avi_deinit(AVFormatContext *s) |
| { |
| for (int i = 0; i < s->nb_streams; i++) { |
| AVIStream *avist = s->streams[i]->priv_data; |
| if (!avist) |
| continue; |
| for (int 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; |
| } |
| } |
| |
| #define OFFSET(x) offsetof(AVIContext, x) |
| #define ENC AV_OPT_FLAG_ENCODING_PARAM |
| static const AVOption options[] = { |
| { "reserve_index_space", "reserve space (in bytes) at the beginning of the file for each stream index", OFFSET(reserve_index_space), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, INT_MAX, ENC }, |
| { "write_channel_mask", "write channel mask into wave format header", OFFSET(write_channel_mask), AV_OPT_TYPE_BOOL, { .i64 = 1 }, 0, 1, ENC }, |
| { "flipped_raw_rgb", "Raw RGB bitmaps are stored bottom-up", OFFSET(flipped_raw_rgb), AV_OPT_TYPE_BOOL, { .i64 = 0 }, 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, |
| .init = avi_init, |
| .deinit = avi_deinit, |
| .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, |
| }; |
