diff options
Diffstat (limited to 'libavformat/avidec.c')
| -rw-r--r-- | libavformat/avidec.c | 82 |
1 files changed, 41 insertions, 41 deletions
diff --git a/libavformat/avidec.c b/libavformat/avidec.c index b08711a5f3..8ac71d9a32 100644 --- a/libavformat/avidec.c +++ b/libavformat/avidec.c @@ -33,12 +33,12 @@ typedef struct AVIStream { int packet_size; int scale; - int rate; + int rate; int sample_size; /* audio only data */ int start; - + int cum_len; /* temporary storage (used during seek) */ - + int prefix; ///< normally 'd'<<8 + 'c' or 'w'<<8 + 'b' int prefix_count; } AVIStream; @@ -70,7 +70,7 @@ static void print_tag(const char *str, unsigned int tag, int size) static int get_riff(AVIContext *avi, ByteIOContext *pb) { - uint32_t tag; + uint32_t tag; /* check RIFF header */ tag = get_le32(pb); @@ -81,7 +81,7 @@ static int get_riff(AVIContext *avi, ByteIOContext *pb) tag = get_le32(pb); if (tag != MKTAG('A', 'V', 'I', ' ') && tag != MKTAG('A', 'V', 'I', 'X')) return -1; - + return 0; } @@ -98,7 +98,7 @@ static int avi_read_header(AVFormatContext *s, AVFormatParameters *ap) int xan_video = 0; /* hack to support Xan A/V */ avi->stream_index= -1; - + if (get_riff(avi, pb) < 0) return -1; @@ -165,18 +165,18 @@ static int avi_read_header(AVFormatContext *s, AVFormatParameters *ap) print_tag("strh", tag1, -1); #endif if(tag1 == MKTAG('i', 'a', 'v', 's') || tag1 == MKTAG('i', 'v', 'a', 's')){ - /* - * After some consideration -- I don't think we + /* + * After some consideration -- I don't think we * have to support anything but DV in a type1 AVIs. */ if (s->nb_streams != 1) goto fail; - + if (handler != MKTAG('d', 'v', 's', 'd') && handler != MKTAG('d', 'v', 'h', 'd') && handler != MKTAG('d', 'v', 's', 'l')) goto fail; - + ast = s->streams[0]->priv_data; av_freep(&s->streams[0]->codec->extradata); av_freep(&s->streams[0]); @@ -196,7 +196,7 @@ static int avi_read_header(AVFormatContext *s, AVFormatParameters *ap) if (stream_index >= s->nb_streams) { url_fskip(pb, size - 8); break; - } + } st = s->streams[stream_index]; ast = st->priv_data; st->codec->stream_codec_tag= handler; @@ -216,7 +216,7 @@ static int avi_read_header(AVFormatContext *s, AVFormatParameters *ap) ast->scale = 1; } av_set_pts_info(st, 64, ast->scale, ast->rate); - + ast->start= get_le32(pb); /* start */ nb_frames = get_le32(pb); @@ -237,7 +237,7 @@ static int avi_read_header(AVFormatContext *s, AVFormatParameters *ap) codec_type = CODEC_TYPE_AUDIO; break; case MKTAG('t', 'x', 't', 's'): - //FIXME + //FIXME codec_type = CODEC_TYPE_DATA; //CODEC_TYPE_SUB ? FIXME break; case MKTAG('p', 'a', 'd', 's'): @@ -275,7 +275,7 @@ static int avi_read_header(AVFormatContext *s, AVFormatParameters *ap) st->codec->extradata= av_malloc(st->codec->extradata_size + FF_INPUT_BUFFER_PADDING_SIZE); get_buffer(pb, st->codec->extradata, st->codec->extradata_size); } - + if(st->codec->extradata_size & 1) //FIXME check if the encoder really did this correctly get_byte(pb); @@ -347,7 +347,7 @@ static int avi_read_header(AVFormatContext *s, AVFormatParameters *ap) assert(!avi->index_loaded); avi_load_index(s); avi->index_loaded = 1; - + return 0; } @@ -358,20 +358,20 @@ static int avi_read_packet(AVFormatContext *s, AVPacket *pkt) int n, d[8], size; offset_t i, sync; void* dstr; - + if (avi->dv_demux) { size = dv_get_packet(avi->dv_demux, pkt); if (size >= 0) return size; } - + if(avi->non_interleaved){ int best_stream_index = 0; AVStream *best_st= NULL; AVIStream *best_ast; int64_t best_ts= INT64_MAX; int i; - + for(i=0; i<s->nb_streams; i++){ AVStream *st = s->streams[i]; AVIStream *ast = st->priv_data; @@ -401,23 +401,23 @@ static int avi_read_packet(AVFormatContext *s, AVPacket *pkt) pos += avi->movi_list + best_ast->packet_size - best_ast->remaining; url_fseek(&s->pb, pos, SEEK_SET); // av_log(NULL, AV_LOG_DEBUG, "pos=%Ld\n", pos); - + if(best_ast->remaining) avi->stream_index= best_stream_index; else avi->stream_index= -1; } } - + resync: if(avi->stream_index >= 0){ AVStream *st= s->streams[ avi->stream_index ]; AVIStream *ast= st->priv_data; int size; - + if(ast->sample_size == 0) size= INT_MAX; - else if(ast->sample_size < 32) + else if(ast->sample_size < 32) size= 64*ast->sample_size; else size= ast->sample_size; @@ -425,7 +425,7 @@ resync: if(size > ast->remaining) size= ast->remaining; av_get_packet(pb, pkt, size); - + if (avi->dv_demux) { dstr = pkt->destruct; size = dv_produce_packet(avi->dv_demux, pkt, @@ -448,7 +448,7 @@ resync: index= av_index_search_timestamp(st, pkt->dts, 0); e= &st->index_entries[index]; - + if(index >= 0 && e->timestamp == ast->frame_offset){ if (e->flags & AVINDEX_KEYFRAME) pkt->flags |= PKT_FLAG_KEY; @@ -459,7 +459,7 @@ resync: pkt->flags |= PKT_FLAG_KEY; } } else { - pkt->flags |= PKT_FLAG_KEY; + pkt->flags |= PKT_FLAG_KEY; } if(ast->sample_size) ast->frame_offset += pkt->size; @@ -494,9 +494,9 @@ resync: for(j=0; j<7; j++) d[j]= d[j+1]; d[7]= get_byte(pb); - + size= d[4] + (d[5]<<8) + (d[6]<<16) + (d[7]<<24); - + if( d[2] >= '0' && d[2] <= '9' && d[3] >= '0' && d[3] <= '9'){ n= (d[2] - '0') * 10 + (d[3] - '0'); @@ -506,7 +506,7 @@ resync: //av_log(NULL, AV_LOG_DEBUG, "%X %X %X %X %X %X %X %X %lld %d %d\n", d[0], d[1], d[2], d[3], d[4], d[5], d[6], d[7], i, size, n); if(i + size > avi->movi_end || d[0]<0) continue; - + //parse ix## if( (d[0] == 'i' && d[1] == 'x' && n < s->nb_streams) //parse JUNK @@ -522,14 +522,14 @@ resync: }else{ n= 100; //invalid stream id } - + //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){ @@ -539,9 +539,9 @@ resync: goto resync; } - if( ((ast->prefix_count<5 || sync+9 > i) && d[2]<128 && d[3]<128) || + 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] == 'd' && d[3] == 'c') || (d[2] == 'w' && d[3] == 'b')*/) { //av_log(NULL, AV_LOG_DEBUG, "OK\n"); @@ -603,7 +603,7 @@ static int avi_read_idx1(AVFormatContext *s, int size) AVIStream *ast; unsigned int index, tag, flags, pos, len; unsigned last_pos= -1; - + nb_index_entries = size / 16; if (nb_index_entries <= 0) return -1; @@ -615,7 +615,7 @@ static int avi_read_idx1(AVFormatContext *s, int size) pos = get_le32(pb); len = get_le32(pb); #if defined(DEBUG_SEEK) - av_log(NULL, AV_LOG_DEBUG, "%d: tag=0x%x flags=0x%x pos=0x%x len=%d/", + av_log(NULL, AV_LOG_DEBUG, "%d: tag=0x%x flags=0x%x pos=0x%x len=%d/", i, tag, flags, pos, len); #endif if(i==0 && pos > avi->movi_list) @@ -627,7 +627,7 @@ static int avi_read_idx1(AVFormatContext *s, int size) continue; st = s->streams[index]; ast = st->priv_data; - + #if defined(DEBUG_SEEK) av_log(NULL, AV_LOG_DEBUG, "%d cum_len=%d\n", len, ast->cum_len); #endif @@ -648,7 +648,7 @@ static int guess_ni_flag(AVFormatContext *s){ int i; int64_t last_start=0; int64_t first_end= INT64_MAX; - + for(i=0; i<s->nb_streams; i++){ AVStream *st = s->streams[i]; int n= st->nb_index_entries; @@ -670,7 +670,7 @@ static int avi_load_index(AVFormatContext *s) ByteIOContext *pb = &s->pb; uint32_t tag, size; offset_t pos= url_ftell(pb); - + url_fseek(pb, avi->movi_end, SEEK_SET); #ifdef DEBUG_SEEK printf("movi_end=0x%llx\n", avi->movi_end); @@ -726,7 +726,7 @@ static int avi_read_seek(AVFormatContext *s, int stream_index, int64_t timestamp index= av_index_search_timestamp(st, timestamp, flags); if(index<0) return -1; - + /* find the position */ pos = st->index_entries[index].pos; timestamp = st->index_entries[index].timestamp; @@ -742,17 +742,17 @@ static int avi_read_seek(AVFormatContext *s, int stream_index, int64_t timestamp if (st2->nb_index_entries <= 0) continue; - + // assert(st2->codec.block_align); assert(st2->time_base.den == ast2->rate); assert(st2->time_base.num == ast2->scale); index = av_index_search_timestamp( - st2, + st2, av_rescale(timestamp, st2->time_base.den*(int64_t)st->time_base.num, st->time_base.den * (int64_t)st2->time_base.num), flags | AVSEEK_FLAG_BACKWARD); if(index<0) index=0; - + if(!avi->non_interleaved){ while(index>0 && st2->index_entries[index].pos > pos) index--; |