X-Git-Url: https://git.sesse.net/?a=blobdiff_plain;f=libavformat%2Favidec.c;h=ef544648bc963ee31fcb56b99a2961a450c9dec3;hb=978677a779e947cc9366143b86bb78c604cff919;hp=0d4689d40619c394bab347e2f1007f7a9306e057;hpb=7b31b0929c23a24bb2adb6b6e277c71720a5e361;p=ffmpeg diff --git a/libavformat/avidec.c b/libavformat/avidec.c index 0d4689d4061..ef544648bc9 100644 --- a/libavformat/avidec.c +++ b/libavformat/avidec.c @@ -43,6 +43,8 @@ typedef struct AVIStream { int prefix; ///< normally 'd'<<8 + 'c' or 'w'<<8 + 'b' int prefix_count; + uint32_t pal[256]; + int has_pal; } AVIStream; typedef struct { @@ -61,6 +63,8 @@ static const char avi_headers[][8] = { { 'R', 'I', 'F', 'F', 'A', 'V', 'I', ' ' }, { 'R', 'I', 'F', 'F', 'A', 'V', 'I', 'X' }, { 'R', 'I', 'F', 'F', 'A', 'V', 'I', 0x19}, + { 'O', 'N', '2', ' ', 'O', 'N', '2', 'f' }, + { 'R', 'I', 'F', 'F', 'A', 'M', 'V', ' ' }, { 0 } }; @@ -104,7 +108,7 @@ static int get_riff(AVIContext *avi, ByteIOContext *pb) static int read_braindead_odml_indx(AVFormatContext *s, int frame_num){ AVIContext *avi = s->priv_data; - ByteIOContext *pb = &s->pb; + ByteIOContext *pb = s->pb; int longs_pre_entry= get_le16(pb); int index_sub_type = get_byte(pb); int index_type = get_byte(pb); @@ -116,7 +120,7 @@ static int read_braindead_odml_indx(AVFormatContext *s, int frame_num){ AVIStream *ast; int i; int64_t last_pos= -1; - int64_t filesize= url_fsize(&s->pb); + int64_t filesize= url_fsize(s->pb); #ifdef DEBUG_SEEK av_log(s, AV_LOG_ERROR, "longs_pre_entry:%d index_type:%d entries_in_use:%d chunk_id:%X base:%16"PRIX64"\n", @@ -223,7 +227,7 @@ static int avi_read_tag(ByteIOContext *pb, char *buf, int maxlen, unsigned int static int avi_read_header(AVFormatContext *s, AVFormatParameters *ap) { AVIContext *avi = s->priv_data; - ByteIOContext *pb = &s->pb; + ByteIOContext *pb = s->pb; uint32_t tag, tag1, handler; int codec_type, stream_index, frame_period, bit_rate; unsigned int size, nb_frames; @@ -231,6 +235,8 @@ static int avi_read_header(AVFormatContext *s, AVFormatParameters *ap) AVStream *st; AVIStream *ast = NULL; char str_track[4]; + int avih_width=0, avih_height=0; + int amv_file_format=0; avi->stream_index= -1; @@ -275,6 +281,8 @@ static int avi_read_header(AVFormatContext *s, AVFormatParameters *ap) avi->is_odml = 1; url_fskip(pb, size + (size & 1)); break; + case MKTAG('a', 'm', 'v', 'h'): + amv_file_format=1; case MKTAG('a', 'v', 'i', 'h'): /* avi header */ /* using frame_period is bad idea */ @@ -285,8 +293,11 @@ static int avi_read_header(AVFormatContext *s, AVFormatParameters *ap) url_fskip(pb, 2 * 4); get_le32(pb); + get_le32(pb); + avih_width=get_le32(pb); + avih_height=get_le32(pb); - url_fskip(pb, size - 7 * 4); + url_fskip(pb, size - 10 * 4); break; case MKTAG('s', 't', 'r', 'h'): /* stream header */ @@ -308,6 +319,8 @@ static int avi_read_header(AVFormatContext *s, AVFormatParameters *ap) goto fail; st->priv_data = ast; } + if(amv_file_format) + tag1 = stream_index ? MKTAG('a','u','d','s') : MKTAG('v','i','d','s'); #ifdef DEBUG print_tag("strh", tag1, -1); @@ -366,13 +379,15 @@ static int avi_read_header(AVFormatContext *s, AVFormatParameters *ap) get_le32(pb); /* initial frame */ ast->scale = get_le32(pb); ast->rate = get_le32(pb); - if(ast->scale && ast->rate){ - }else if(frame_period){ - ast->rate = 1000000; - ast->scale = frame_period; - }else{ - ast->rate = 25; - ast->scale = 1; + if(!(ast->scale && ast->rate)){ + av_log(s, AV_LOG_WARNING, "Scale/Rate is %u/%u which is invalid. (This file has been generated by broken software)\n", ast->scale, ast->rate); + if(frame_period){ + ast->rate = 1000000; + ast->scale = frame_period; + }else{ + ast->rate = 25; + ast->scale = 1; + } } av_set_pts_info(st, 64, ast->scale, ast->rate); @@ -415,6 +430,14 @@ static int avi_read_header(AVFormatContext *s, AVFormatParameters *ap) st = s->streams[stream_index]; switch(codec_type) { case CODEC_TYPE_VIDEO: + if(amv_file_format){ + st->codec->width=avih_width; + st->codec->height=avih_height; + st->codec->codec_type = CODEC_TYPE_VIDEO; + st->codec->codec_id = CODEC_ID_AMV; + url_fskip(pb, size); + break; + } get_le32(pb); /* size */ st->codec->width = get_le32(pb); st->codec->height = get_le32(pb); @@ -469,8 +492,10 @@ static int avi_read_header(AVFormatContext *s, AVFormatParameters *ap) break; case CODEC_TYPE_AUDIO: get_wav_header(pb, st->codec, size); - if(ast->sample_size && st->codec->block_align && ast->sample_size % st->codec->block_align) - av_log(s, AV_LOG_DEBUG, "invalid sample size or block align detected\n"); + if(ast->sample_size && st->codec->block_align && ast->sample_size != st->codec->block_align){ + av_log(s, AV_LOG_WARNING, "sample size (%d) != block align (%d)\n", ast->sample_size, st->codec->block_align); + ast->sample_size= st->codec->block_align; + } if (size%2) /* 2-aligned (fix for Stargate SG-1 - 3x18 - Shades of Grey.avi) */ url_fskip(pb, 1); /* Force parsing as several audio frames can be in @@ -485,6 +510,8 @@ static int avi_read_header(AVFormatContext *s, AVFormatParameters *ap) st->codec->codec_id = CODEC_ID_XAN_DPCM; st->codec->codec_tag = 0; } + if (amv_file_format) + st->codec->codec_id = CODEC_ID_ADPCM_IMA_AMV; break; default: st->codec->codec_type = CODEC_TYPE_DATA; @@ -502,6 +529,31 @@ static int avi_read_header(AVFormatContext *s, AVFormatParameters *ap) } url_fseek(pb, i+size, SEEK_SET); break; + case MKTAG('v', 'p', 'r', 'p'): + if(stream_index < (unsigned)s->nb_streams && size > 9*4){ + AVRational active, active_aspect; + + st = s->streams[stream_index]; + get_le32(pb); + get_le32(pb); + get_le32(pb); + get_le32(pb); + get_le32(pb); + + active_aspect.den= get_le16(pb); + active_aspect.num= get_le16(pb); + active.num = get_le32(pb); + active.den = get_le32(pb); + get_le32(pb); //nbFieldsPerFrame + + if(active_aspect.num && active_aspect.den && active.num && active.den){ + st->codec->sample_aspect_ratio= av_div_q(active_aspect, active); +//av_log(s, AV_LOG_ERROR, "vprp %d/%d %d/%d\n", active_aspect.num, active_aspect.den, active.num, active.den); + } + size -= 9*4; + } + url_fseek(pb, size, SEEK_CUR); + break; case MKTAG('I', 'N', 'A', 'M'): avi_read_tag(pb, s->title, sizeof(s->title), size); break; @@ -562,7 +614,7 @@ static int avi_read_header(AVFormatContext *s, AVFormatParameters *ap) static int avi_read_packet(AVFormatContext *s, AVPacket *pkt) { AVIContext *avi = s->priv_data; - ByteIOContext *pb = &s->pb; + ByteIOContext *pb = s->pb; int n, d[8], size; offset_t i, sync; void* dstr; @@ -607,7 +659,7 @@ static int avi_read_packet(AVFormatContext *s, AVPacket *pkt) if(i>=0){ int64_t pos= best_st->index_entries[i].pos; pos += best_ast->packet_size - best_ast->remaining; - url_fseek(&s->pb, pos + 8, SEEK_SET); + url_fseek(s->pb, pos + 8, SEEK_SET); // av_log(NULL, AV_LOG_DEBUG, "pos=%"PRId64"\n", pos); assert(best_ast->remaining <= best_ast->packet_size); @@ -636,6 +688,14 @@ resync: size= ast->remaining; av_get_packet(pb, pkt, size); + if(ast->has_pal && pkt->data && pkt->size<(unsigned)INT_MAX/2){ + ast->has_pal=0; + pkt->size += 4*256; + pkt->data = av_realloc(pkt->data, pkt->size + FF_INPUT_BUFFER_PADDING_SIZE); + if(pkt->data) + memcpy(pkt->data + pkt->size - 4*256, ast->pal, 4*256); + } + if (ENABLE_DV_DEMUXER && avi->dv_demux) { dstr = pkt->destruct; size = dv_produce_packet(avi->dv_demux, pkt, @@ -719,75 +779,75 @@ resync: //parse ##dc/##wb if(n < s->nb_streams){ - AVStream *st; - AVIStream *ast; - st = s->streams[n]; - ast = st->priv_data; - - if( (st->discard >= AVDISCARD_DEFAULT && size==0) - /*|| (st->discard >= AVDISCARD_NONKEY && !(pkt->flags & PKT_FLAG_KEY))*/ //FIXME needs a little reordering - || st->discard >= AVDISCARD_ALL){ + AVStream *st; + AVIStream *ast; + st = s->streams[n]; + ast = st->priv_data; + + if(s->nb_streams>=2){ + AVStream *st1 = s->streams[1]; + AVIStream *ast1= st1->priv_data; + //workaround for broken small-file-bug402.avi + if( d[2] == 'w' && d[3] == 'b' + && n==0 + && st ->codec->codec_type == CODEC_TYPE_VIDEO + && st1->codec->codec_type == CODEC_TYPE_AUDIO + && ast->prefix == 'd'*256+'c' + && (d[2]*256+d[3] == ast1->prefix || !ast1->prefix_count) + ){ + n=1; + st = st1; + ast = ast1; + av_log(s, AV_LOG_WARNING, "Invalid stream+prefix combination, assuming audio\n"); + } + } + + + if( (st->discard >= AVDISCARD_DEFAULT && size==0) + /*|| (st->discard >= AVDISCARD_NONKEY && !(pkt->flags & PKT_FLAG_KEY))*/ //FIXME needs a little reordering + || st->discard >= AVDISCARD_ALL){ if(ast->sample_size) ast->frame_offset += pkt->size; else ast->frame_offset++; url_fskip(pb, size); goto resync; - } + } - if( ((ast->prefix_count<5 || sync+9 > i) && d[2]<128 && d[3]<128) || - d[2]*256+d[3] == ast->prefix /*|| - (d[2] == 'd' && d[3] == 'c') || - (d[2] == 'w' && d[3] == 'b')*/) { + if (d[2] == 'p' && d[3] == 'c' && size<=4*256+4) { + int k = get_byte(pb); + int last = (k + get_byte(pb) - 1) & 0xFF; -//av_log(NULL, AV_LOG_DEBUG, "OK\n"); - if(d[2]*256+d[3] == ast->prefix) - ast->prefix_count++; - else{ - ast->prefix= d[2]*256+d[3]; - ast->prefix_count= 0; - } + get_le16(pb); //flags - avi->stream_index= n; - ast->packet_size= size + 8; - ast->remaining= size; + for (; k <= last; k++) + ast->pal[k] = get_be32(pb)>>8;// b + (g << 8) + (r << 16); + ast->has_pal= 1; + goto resync; + } else if( ((ast->prefix_count<5 || sync+9 > i) && d[2]<128 && d[3]<128) || + d[2]*256+d[3] == ast->prefix /*|| + (d[2] == 'd' && d[3] == 'c') || + (d[2] == 'w' && d[3] == 'b')*/) { - { - uint64_t pos= url_ftell(pb) - 8; - if(!st->index_entries || !st->nb_index_entries || st->index_entries[st->nb_index_entries - 1].pos < pos){ - av_add_index_entry(st, pos, ast->frame_offset / FFMAX(1, ast->sample_size), size, 0, AVINDEX_KEYFRAME); +//av_log(NULL, AV_LOG_DEBUG, "OK\n"); + if(d[2]*256+d[3] == ast->prefix) + ast->prefix_count++; + else{ + ast->prefix= d[2]*256+d[3]; + ast->prefix_count= 0; } - } - goto resync; - } - } - /* palette changed chunk */ - if ( d[0] >= '0' && d[0] <= '9' - && d[1] >= '0' && d[1] <= '9' - && ((d[2] == 'p' && d[3] == 'c')) - && n < s->nb_streams && i + size <= avi->fsize) { - AVStream *st; - int first, clr, flags, k, p; - - st = s->streams[n]; + avi->stream_index= n; + ast->packet_size= size + 8; + ast->remaining= size; - first = get_byte(pb); - clr = get_byte(pb); - if(!clr) /* all 256 colors used */ - clr = 256; - flags = get_le16(pb); - p = 4; - for (k = first; k < clr + first; k++) { - int r, g, b; - r = get_byte(pb); - g = get_byte(pb); - b = get_byte(pb); - get_byte(pb); - st->codec->palctrl->palette[k] = b + (g << 8) + (r << 16); + { + uint64_t pos= url_ftell(pb) - 8; + if(!st->index_entries || !st->nb_index_entries || st->index_entries[st->nb_index_entries - 1].pos < pos){ + av_add_index_entry(st, pos, ast->frame_offset / FFMAX(1, ast->sample_size), size, 0, AVINDEX_KEYFRAME); + } + } + goto resync; } - st->codec->palctrl->palette_changed = 1; - goto resync; } - } return -1; @@ -798,7 +858,7 @@ resync: static int avi_read_idx1(AVFormatContext *s, int size) { AVIContext *avi = s->priv_data; - ByteIOContext *pb = &s->pb; + ByteIOContext *pb = s->pb; int nb_index_entries, i; AVStream *st; AVIStream *ast; @@ -869,7 +929,7 @@ static int guess_ni_flag(AVFormatContext *s){ static int avi_load_index(AVFormatContext *s) { AVIContext *avi = s->priv_data; - ByteIOContext *pb = &s->pb; + ByteIOContext *pb = s->pb; uint32_t tag, size; offset_t pos= url_ftell(pb); @@ -944,7 +1004,7 @@ static int avi_read_seek(AVFormatContext *s, int stream_index, int64_t timestamp /* DV demux so it can synth correct timestamps */ dv_offset_reset(avi->dv_demux, timestamp); - url_fseek(&s->pb, pos, SEEK_SET); + url_fseek(s->pb, pos, SEEK_SET); avi->stream_index= -1; return 0; } @@ -984,7 +1044,7 @@ static int avi_read_seek(AVFormatContext *s, int stream_index, int64_t timestamp } /* do the seek */ - url_fseek(&s->pb, pos, SEEK_SET); + url_fseek(s->pb, pos, SEEK_SET); avi->stream_index= -1; return 0; }