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Lines 276-287
static int str_read_packet(AVFormatConte
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| 276 |
int current_sector = AV_RL16(§or[0x1C]); |
276 |
int current_sector = AV_RL16(§or[0x1C]); |
| 277 |
int sector_count = AV_RL16(§or[0x1E]); |
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int sector_count = AV_RL16(§or[0x1E]); |
| 278 |
int frame_size = AV_RL32(§or[0x24]); |
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int frame_size = AV_RL32(§or[0x24]); |
| 279 |
int bytes_to_copy; |
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if(!( frame_size>=0 |
| 281 |
&& current_sector < sector_count |
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&& sector_count*VIDEO_DATA_CHUNK_SIZE >=frame_size)){ |
| 283 |
av_log(s, AV_LOG_ERROR, "Invalid parameters %d %d %d\n", current_sector, sector_count, frame_size); |
| 284 |
return AVERROR_INVALIDDATA; |
| 285 |
} |
| 286 |
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| 280 |
// printf("%d %d %d\n",current_sector,sector_count,frame_size); |
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// printf("%d %d %d\n",current_sector,sector_count,frame_size); |
| 281 |
/* if this is the first sector of the frame, allocate a pkt */ |
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/* if this is the first sector of the frame, allocate a pkt */ |
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pkt = &str->tmp_pkt; |
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pkt = &str->tmp_pkt; |
| 283 |
if (current_sector == 0) { |
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| 284 |
if (av_new_packet(pkt, frame_size)) |
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if(pkt->size != sector_count*VIDEO_DATA_CHUNK_SIZE){ |
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if(pkt->data) |
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av_log(s, AV_LOG_ERROR, "missmatching sector_count\n"); |
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av_free_packet(pkt); |
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if (av_new_packet(pkt, sector_count*VIDEO_DATA_CHUNK_SIZE)) |
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return AVERROR(EIO); |
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return AVERROR(EIO); |
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| 287 |
pkt->pos= url_ftell(pb) - RAW_CD_SECTOR_SIZE; |
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pkt->pos= url_ftell(pb) - RAW_CD_SECTOR_SIZE; |
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Lines 295-309
static int str_read_packet(AVFormatConte
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| 295 |
str->pts += (90000 / 15); |
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str->pts += (90000 / 15); |
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} |
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} |
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/* load all the constituent chunks in the video packet */ |
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memcpy(pkt->data + current_sector*VIDEO_DATA_CHUNK_SIZE, |
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bytes_to_copy = frame_size - current_sector*VIDEO_DATA_CHUNK_SIZE; |
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sector + VIDEO_DATA_HEADER_SIZE, |
| 300 |
if (bytes_to_copy>0) { |
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VIDEO_DATA_CHUNK_SIZE); |
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if (bytes_to_copy>VIDEO_DATA_CHUNK_SIZE) bytes_to_copy=VIDEO_DATA_CHUNK_SIZE; |
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memcpy(pkt->data + current_sector*VIDEO_DATA_CHUNK_SIZE, |
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sector + VIDEO_DATA_HEADER_SIZE, bytes_to_copy); |
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} |
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if (current_sector == sector_count-1) { |
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if (current_sector == sector_count-1) { |
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pkt->size= frame_size; |
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*ret_pkt = *pkt; |
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*ret_pkt = *pkt; |
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pkt->data= NULL; |
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pkt->size= -1; |
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return 0; |
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return 0; |
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} |
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} |
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