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remove PSParser mistake comment

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xiongguangjie 2023-03-06 19:33:34 +08:00
parent 9fdb3de8b2
commit d6e9a4fb90
2 changed files with 17 additions and 24 deletions
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31
src/Extension/SPSParser.c
View File

@ -252,9 +252,9 @@ static inline int getBitsLeft(void *pvHandle)
*functions *functions
********************************************/ ********************************************/
/** /**
* @brief Function getOneBit() Á1¸öbit * @brief Function getOneBit() get next bit
* @param[in] h T_GetBitContext structrue * @param[in] h T_GetBitContext structrue
* @retval 0: success, -1 : failure * @retval other : success, -1 : failure
* @pre * @pre
* @post * @post
*/ */
@ -291,10 +291,10 @@ exit:
/** /**
* @brief Function getBits() Án¸öbits£¬n²»Äܳ¬¹ý32 * @brief Function getBits() get next bits
* @param[in] h T_GetBitContext structrue * @param[in] h T_GetBitContext structrue
* @param[in] n how many bits you want? * @param[in] n how many bits you want?
* @retval 0: success, -1 : failure * @retval other : success, -1 : failure
* @pre * @pre
* @post * @post
*/ */
@ -446,7 +446,7 @@ static inline unsigned int showBitsLong(void *pvHandle, int iN)
/** /**
* @brief Function parseCodenum() Ö¸Êý¸çÂײ¼±àÂë½âÎö£¬²Î¿¼h264±ê×¼µÚ9½Ú * @brief Function parseCodenum()
* @param[in] buf * @param[in] buf
* @retval u32CodeNum * @retval u32CodeNum
* @pre * @pre
@ -469,7 +469,7 @@ static int parseCodenum(void *pvBuf)
} }
/** /**
* @brief Function parseUe() Ö¸Êý¸çÂײ¼±àÂë½âÎö ue(),²Î¿¼h264±ê×¼µÚ9½Ú * @brief Function parseUe()
* @param[in] buf sps_pps parse buf * @param[in] buf sps_pps parse buf
* @retval u32CodeNum * @retval u32CodeNum
* @pre * @pre
@ -482,7 +482,7 @@ static int parseUe(void *pvBuf)
/** /**
* @brief Function parseSe() Ö¸Êý¸çÂײ¼±àÂë½âÎö se(), ²Î¿¼h264±ê×¼µÚ9½Ú * @brief Function parseSe()
* @param[in] buf sps_pps parse buf * @param[in] buf sps_pps parse buf
* @retval u32CodeNum * @retval u32CodeNum
* @pre * @pre
@ -502,7 +502,7 @@ static int parseSe(void *pvBuf)
/** /**
* @brief Function getBitContextFree() ÉêÇëµÄget_bit_context½á¹¹ÄÚ´æÊÍ·Å * @brief Function getBitContextFree()
* @param[in] buf T_GetBitContext buf * @param[in] buf T_GetBitContext buf
* @retval none * @retval none
* @pre * @pre
@ -527,18 +527,13 @@ static void getBitContextFree(void *pvBuf)
/** /**
* @brief Function deEmulationPrevention() ½â¾ºÕù´úÂë * @brief Function deEmulationPrevention()
* @param[in] buf T_GetBitContext buf * @param[in] buf T_GetBitContext buf
* @retval none * @retval none
* @pre * @pre
* @post * @post
* @note: * @note:
* µ÷ÊÔʱ×ÜÊÇ·¢ÏÖvui.time_scaleÖµÌرðÆæ¹Ö£¬×ÜÊÇ16777216£¬ºóÀ´²éѯԭÒòÈçÏÂ:
* http://www.cnblogs.com/eustoma/archive/2012/02/13/2415764.html * http://www.cnblogs.com/eustoma/archive/2012/02/13/2415764.html
* H.264±àÂëʱ£¬ÔÚÿ¸öNALÇ°Ìí¼ÓÆðʼÂë 0x000001£¬½âÂëÆ÷ÔÚÂëÁ÷Öмì²âµ½ÆðʼÂ룬µ±Ç°NAL½áÊø¡£
* ΪÁË·ÀÖ¹NALÄÚ²¿³öÏÖ0x000001µÄÊý¾Ý£¬h.264ÓÖÌá³ö'·ÀÖ¹¾ºÕù emulation prevention"»úÖÆ£¬
* ÔÚ±àÂëÍêÒ»¸öNALʱ£¬Èç¹û¼ì²â³öÓÐÁ¬ÐøÁ½¸ö0x00×Ö½Ú£¬¾ÍÔÚºóÃæ²åÈëÒ»¸ö0x03¡£
* µ±½âÂëÆ÷ÔÚNALÄÚ²¿¼ì²âµ½0x000003µÄÊý¾Ý£¬¾Í°Ñ0x03Å×Æú£¬»Ö¸´Ô­Ê¼Êý¾Ý¡£
* 0x000000 >>>>>> 0x00000300 * 0x000000 >>>>>> 0x00000300
* 0x000001 >>>>>> 0x00000301 * 0x000001 >>>>>> 0x00000301
* 0x000002 >>>>>> 0x00000302 * 0x000002 >>>>>> 0x00000302
@ -581,22 +576,20 @@ static void *deEmulationPrevention(void *pvBuf)
tmp_buf_size = ptPtr->iBufSize; tmp_buf_size = ptPtr->iBufSize;
for(i=0; i<(tmp_buf_size-2); i++) for(i=0; i<(tmp_buf_size-2); i++)
{ {
/*¼ì²â0x000003*/
iVal = (pu8TmpPtr[i]^0x00) + (pu8TmpPtr[i+1]^0x00) + (pu8TmpPtr[i+2]^0x03); iVal = (pu8TmpPtr[i]^0x00) + (pu8TmpPtr[i+1]^0x00) + (pu8TmpPtr[i+2]^0x03);
if(iVal == 0) if(iVal == 0)
{ {
/*ÌÞ³ý0x03*/
for(j=i+2; j<tmp_buf_size-1; j++) for(j=i+2; j<tmp_buf_size-1; j++)
{ {
pu8TmpPtr[j] = pu8TmpPtr[j+1]; pu8TmpPtr[j] = pu8TmpPtr[j+1];
} }
/*ÏàÓ¦µÄbufsizeÒª¼õС*/
ptPtr->iBufSize--; ptPtr->iBufSize--;
} }
} }
/*ÖØмÆËãtotal_bit*/
ptPtr->iTotalBit = ptPtr->iBufSize << 3; ptPtr->iTotalBit = ptPtr->iBufSize << 3;
return (void *)ptPtr; return (void *)ptPtr;

10
src/Extension/SPSParser.h
View File

@ -439,11 +439,11 @@ typedef struct T_HEVCSPS {
typedef struct T_GetBitContext{ typedef struct T_GetBitContext{
uint8_t *pu8Buf; /*Ö¸ÏòSPS start*/ uint8_t *pu8Buf; // buf
int iBufSize; /*SPS ³¤¶È*/ int iBufSize; // buf size
int iBitPos; /*bitÒѶÁȡλÖÃ*/ int iBitPos; // bit position
int iTotalBit; /*bit×ܳ¤¶È*/ int iTotalBit; // bit number
int iCurBitPos; /*µ±Ç°¶ÁȡλÖÃ*/ int iCurBitPos; // current bit position
}T_GetBitContext; }T_GetBitContext;