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@ -23,6 +23,8 @@ |
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#include "avformat.h" |
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#include "rawdec.h" |
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#include "libavutil/intreadwrite.h" |
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#define SEQ_START_CODE 0x000001b3 |
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#define GOP_START_CODE 0x000001b8 |
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#define PICTURE_START_CODE 0x00000100 |
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@ -35,14 +37,29 @@ static int mpegvideo_probe(AVProbeData *p) |
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{ |
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uint32_t code= -1; |
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int pic=0, seq=0, slice=0, pspack=0, vpes=0, apes=0, res=0, sicle=0; |
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int i; |
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int i, j; |
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uint32_t last = 0; |
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for(i=0; i<p->buf_size; i++){ |
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code = (code<<8) + p->buf[i]; |
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if ((code & 0xffffff00) == 0x100) { |
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switch(code){ |
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case SEQ_START_CODE: seq++; break; |
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case SEQ_START_CODE: |
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if (!(p->buf[i+1+3+1+2] & 0x20)) |
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break; |
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j = i; |
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if (p->buf[j+8] & 2) |
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j+= 64; |
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if (j >= p->buf_size) |
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break; |
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if (p->buf[j+8] & 1) |
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j+= 64; |
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if (j >= p->buf_size) |
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break; |
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if (AV_RB24(p->buf + j + 9) & 0xFFFFFE) |
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break; |
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seq++; |
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break; |
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case PICTURE_START_CODE: pic++; break; |
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case PACK_START_CODE: pspack++; break; |
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case 0x1b6: |
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