1039 lines
31 KiB
C
1039 lines
31 KiB
C
#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
|
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#include <stdint.h> /* for uint32_t, etc */
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#include "SPSParser.h"
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|
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/********************************************
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*define here
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********************************************/
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#define SPS_PPS_DEBUG
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//#undef SPS_PPS_DEBUG
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||
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#define MAX_LEN 32
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#define EXTENDED_SAR 255
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#define FF_ARRAY_ELEMS(a) (sizeof(a) / sizeof((a)[0]))
|
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#define MAX_SPS_COUNT 32
|
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#define MAX_LOG2_MAX_FRAME_NUM (12 + 4)
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#define MIN_LOG2_MAX_FRAME_NUM 4
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#define H264_MAX_PICTURE_COUNT 36
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#define CODEC_FLAG2_IGNORE_CROP 0x00010000 ///< Discard cropping information from SPS.
|
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#ifndef INT_MAX
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#define INT_MAX 65535
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#endif //INT_MAX
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/* report level */
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#define RPT_ERR (1) // error, system error
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#define RPT_WRN (2) // warning, maybe wrong, maybe OK
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#define RPT_INF (3) // important information
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#define RPT_DBG (4) // debug information
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static int rpt_lvl = RPT_WRN; /* report level: ERR, WRN, INF, DBG */
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/* report micro */
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#define RPT(lvl, ...) \
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do { \
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if(lvl <= rpt_lvl) { \
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switch(lvl) { \
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case RPT_ERR: \
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fprintf(stderr, "\"%s\" line %d [err]: ", __FILE__, __LINE__); \
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break; \
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case RPT_WRN: \
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fprintf(stderr, "\"%s\" line %d [wrn]: ", __FILE__, __LINE__); \
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break; \
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case RPT_INF: \
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fprintf(stderr, "\"%s\" line %d [inf]: ", __FILE__, __LINE__); \
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break; \
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case RPT_DBG: \
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fprintf(stderr, "\"%s\" line %d [dbg]: ", __FILE__, __LINE__); \
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break; \
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default: \
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fprintf(stderr, "\"%s\" line %d [???]: ", __FILE__, __LINE__); \
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break; \
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} \
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fprintf(stderr, __VA_ARGS__); \
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fprintf(stderr, "\n"); \
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} \
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} while(0)
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static const uint8_t sg_aau8DefaultScaling4[2][16] = {
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{ 6, 13, 20, 28, 13, 20, 28, 32,
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20, 28, 32, 37, 28, 32, 37, 42 },
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{ 10, 14, 20, 24, 14, 20, 24, 27,
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20, 24, 27, 30, 24, 27, 30, 34 }
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};
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static const uint8_t sg_aau8DefaultScaling8[2][64] = {
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{ 6, 10, 13, 16, 18, 23, 25, 27,
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10, 11, 16, 18, 23, 25, 27, 29,
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13, 16, 18, 23, 25, 27, 29, 31,
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16, 18, 23, 25, 27, 29, 31, 33,
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18, 23, 25, 27, 29, 31, 33, 36,
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23, 25, 27, 29, 31, 33, 36, 38,
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25, 27, 29, 31, 33, 36, 38, 40,
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27, 29, 31, 33, 36, 38, 40, 42 },
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{ 9, 13, 15, 17, 19, 21, 22, 24,
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13, 13, 17, 19, 21, 22, 24, 25,
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15, 17, 19, 21, 22, 24, 25, 27,
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17, 19, 21, 22, 24, 25, 27, 28,
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19, 21, 22, 24, 25, 27, 28, 30,
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21, 22, 24, 25, 27, 28, 30, 32,
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22, 24, 25, 27, 28, 30, 32, 33,
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24, 25, 27, 28, 30, 32, 33, 35 }
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};
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static const T_AVRational sg_atFfH264PixelSspect[17] = {
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{ 0, 1 },
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{ 1, 1 },
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{ 12, 11 },
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{ 10, 11 },
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{ 16, 11 },
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{ 40, 33 },
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{ 24, 11 },
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{ 20, 11 },
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{ 32, 11 },
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{ 80, 33 },
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{ 18, 11 },
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{ 15, 11 },
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{ 64, 33 },
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{ 160, 99 },
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{ 4, 3 },
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{ 3, 2 },
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{ 2, 1 },
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};
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static const uint8_t sg_au8ZigzagScan[16+1] = {
|
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0 + 0 * 4, 1 + 0 * 4, 0 + 1 * 4, 0 + 2 * 4,
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1 + 1 * 4, 2 + 0 * 4, 3 + 0 * 4, 2 + 1 * 4,
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1 + 2 * 4, 0 + 3 * 4, 1 + 3 * 4, 2 + 2 * 4,
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3 + 1 * 4, 3 + 2 * 4, 2 + 3 * 4, 3 + 3 * 4,
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};
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const uint8_t g_au8FfZigzagDirect[64] = {
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0, 1, 8, 16, 9, 2, 3, 10,
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17, 24, 32, 25, 18, 11, 4, 5,
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12, 19, 26, 33, 40, 48, 41, 34,
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27, 20, 13, 6, 7, 14, 21, 28,
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35, 42, 49, 56, 57, 50, 43, 36,
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29, 22, 15, 23, 30, 37, 44, 51,
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58, 59, 52, 45, 38, 31, 39, 46,
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53, 60, 61, 54, 47, 55, 62, 63
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};
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static inline int getBitsLeft(void *pvHandle)
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{
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int iResLen = 0;
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T_GetBitContext *ptPtr = (T_GetBitContext *)pvHandle;
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if(ptPtr->iBufSize <= 0 || ptPtr->iTotalBit <= 0)
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{
|
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RPT(RPT_WRN, "buffer size is zero");
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return 0;
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}
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iResLen = ptPtr->iTotalBit - ptPtr->iBitPos;
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return iResLen;
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}
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/********************************************
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*functions
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********************************************/
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/**
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* @brief Function getOneBit() ¶Á1¸öbit
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* @param[in] h T_GetBitContext structrue
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* @retval 0: success, -1 : failure
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* @pre
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* @post
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*/
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static int getOneBit(void *pvHandle)
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{
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T_GetBitContext *ptPtr = (T_GetBitContext *)pvHandle;
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int iRet = 0;
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uint8_t *pu8CurChar = NULL;
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uint8_t u8Shift;
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int iResoLen = 0;
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if(NULL == ptPtr)
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{
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RPT(RPT_ERR, "NULL pointer");
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iRet = -1;
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goto exit;
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}
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iResoLen = getBitsLeft(ptPtr);
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if(iResoLen < 1)
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{
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iRet = -1;
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goto exit;
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}
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pu8CurChar = ptPtr->pu8Buf + (ptPtr->iBitPos >> 3);
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u8Shift = 7 - (ptPtr->iCurBitPos);
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ptPtr->iBitPos++;
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ptPtr->iCurBitPos = ptPtr->iBitPos & 0x7;
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iRet = ((*pu8CurChar) >> u8Shift) & 0x01;
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exit:
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return iRet;
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}
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/**
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* @brief Function getBits() ¶Án¸öbits£¬n²»Äܳ¬¹ý32
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* @param[in] h T_GetBitContext structrue
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* @param[in] n how many bits you want?
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* @retval 0: success, -1 : failure
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* @pre
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* @post
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*/
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static int getBits(void *pvHandle, int iN)
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{
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T_GetBitContext *ptPtr = (T_GetBitContext *)pvHandle;
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uint8_t au8Temp[5] = {0};
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uint8_t *pu8CurChar = NULL;
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uint8_t u8Nbyte;
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uint8_t u8Shift;
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uint32_t u32Result = 0;
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int iRet = 0;
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int iResoLen = 0;
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if(NULL == ptPtr)
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{
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RPT(RPT_ERR, "NULL pointer");
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iRet = -1;
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goto exit;
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}
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if(iN > MAX_LEN)
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{
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iN = MAX_LEN;
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}
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iResoLen = getBitsLeft(ptPtr);
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if(iResoLen < iN)
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{
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iRet = -1;
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goto exit;
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}
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if((ptPtr->iBitPos + iN) > ptPtr->iTotalBit)
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{
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iN = ptPtr->iTotalBit- ptPtr->iBitPos;
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}
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pu8CurChar = ptPtr->pu8Buf+ (ptPtr->iBitPos>>3);
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u8Nbyte = (ptPtr->iCurBitPos + iN + 7) >> 3;
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u8Shift = (8 - (ptPtr->iCurBitPos + iN))& 0x07;
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if(iN == MAX_LEN)
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{
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RPT(RPT_DBG, "12(ptPtr->iBitPos(:%d) + iN(:%d)) > ptPtr->iTotalBit(:%d)!!! ",\
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ptPtr->iBitPos, iN, ptPtr->iTotalBit);
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RPT(RPT_DBG, "0x%x 0x%x 0x%x 0x%x", (*pu8CurChar), *(pu8CurChar+1),*(pu8CurChar+2),*(pu8CurChar+3));
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}
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memcpy(&au8Temp[5-u8Nbyte], pu8CurChar, u8Nbyte);
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iRet = (uint32_t)au8Temp[0] << 24;
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iRet = iRet << 8;
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iRet = ((uint32_t)au8Temp[1]<<24)|((uint32_t)au8Temp[2] << 16)\
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|((uint32_t)au8Temp[3] << 8)|au8Temp[4];
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iRet = (iRet >> u8Shift) & (((uint64_t)1<<iN) - 1);
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u32Result = iRet;
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ptPtr->iBitPos += iN;
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ptPtr->iCurBitPos = ptPtr->iBitPos & 0x7;
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exit:
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return u32Result;
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}
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/**
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* @brief Function parseCodenum() Ö¸Êý¸çÂײ¼±àÂë½âÎö£¬²Î¿¼h264±ê×¼µÚ9½Ú
|
||
* @param[in] buf
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||
* @retval u32CodeNum
|
||
* @pre
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||
* @post
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||
*/
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static int parseCodenum(void *pvBuf)
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{
|
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uint8_t u8LeadingZeroBits = -1;
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uint8_t u8B;
|
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uint32_t u32CodeNum = 0;
|
||
|
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for(u8B=0; !u8B; u8LeadingZeroBits++)
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{
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u8B = getOneBit(pvBuf);
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}
|
||
|
||
u32CodeNum = ((uint32_t)1 << u8LeadingZeroBits) - 1 + getBits(pvBuf, u8LeadingZeroBits);
|
||
|
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return u32CodeNum;
|
||
}
|
||
|
||
/**
|
||
* @brief Function parseUe() Ö¸Êý¸çÂײ¼±àÂë½âÎö ue(),²Î¿¼h264±ê×¼µÚ9½Ú
|
||
* @param[in] buf sps_pps parse buf
|
||
* @retval u32CodeNum
|
||
* @pre
|
||
* @post
|
||
*/
|
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static int parseUe(void *pvBuf)
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{
|
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return parseCodenum(pvBuf);
|
||
}
|
||
|
||
|
||
/**
|
||
* @brief Function parseSe() Ö¸Êý¸çÂײ¼±àÂë½âÎö se(), ²Î¿¼h264±ê×¼µÚ9½Ú
|
||
* @param[in] buf sps_pps parse buf
|
||
* @retval u32CodeNum
|
||
* @pre
|
||
* @post
|
||
*/
|
||
static int parseSe(void *pvBuf)
|
||
{
|
||
int iRet = 0;
|
||
int u32CodeNum;
|
||
|
||
u32CodeNum = parseCodenum(pvBuf);
|
||
iRet = (u32CodeNum + 1) >> 1;
|
||
iRet = (u32CodeNum & 0x01)? iRet : -iRet;
|
||
|
||
return iRet;
|
||
}
|
||
|
||
|
||
/**
|
||
* @brief Function getBitContextFree() ÉêÇëµÄget_bit_context½á¹¹ÄÚ´æÊÍ·Å
|
||
* @param[in] buf T_GetBitContext buf
|
||
* @retval none
|
||
* @pre
|
||
* @post
|
||
*/
|
||
static void getBitContextFree(void *pvBuf)
|
||
{
|
||
T_GetBitContext *ptPtr = (T_GetBitContext *)pvBuf;
|
||
|
||
if(ptPtr)
|
||
{
|
||
if(ptPtr->pu8Buf)
|
||
{
|
||
free(ptPtr->pu8Buf);
|
||
}
|
||
|
||
free(ptPtr);
|
||
}
|
||
}
|
||
|
||
|
||
|
||
|
||
/**
|
||
* @brief Function deEmulationPrevention() ½â¾ºÕù´úÂë
|
||
* @param[in] buf T_GetBitContext buf
|
||
* @retval none
|
||
* @pre
|
||
* @post
|
||
* @note:
|
||
* µ÷ÊÔʱ×ÜÊÇ·¢ÏÖvui.time_scaleÖµÌرðÆæ¹Ö£¬×ÜÊÇ16777216£¬ºóÀ´²éѯÔÒòÈçÏÂ:
|
||
* 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¸´ÔʼÊý¾Ý¡£
|
||
* 0x000000 >>>>>> 0x00000300
|
||
* 0x000001 >>>>>> 0x00000301
|
||
* 0x000002 >>>>>> 0x00000302
|
||
* 0x000003 >>>>>> 0x00000303
|
||
*/
|
||
static void *deEmulationPrevention(void *pvBuf)
|
||
{
|
||
T_GetBitContext *ptPtr = NULL;
|
||
T_GetBitContext *ptBufPtr = (T_GetBitContext *)pvBuf;
|
||
int i = 0, j = 0;
|
||
uint8_t *pu8TmpPtr = NULL;
|
||
int tmp_buf_size = 0;
|
||
int iVal = 0;
|
||
|
||
if(NULL == ptBufPtr)
|
||
{
|
||
RPT(RPT_ERR, "NULL ptPtr");
|
||
goto exit;
|
||
}
|
||
|
||
ptPtr = (T_GetBitContext *)malloc(sizeof(T_GetBitContext));
|
||
if(NULL == ptPtr)
|
||
{
|
||
RPT(RPT_ERR, "NULL ptPtr");
|
||
goto exit;
|
||
}
|
||
|
||
memcpy(ptPtr, ptBufPtr, sizeof(T_GetBitContext));
|
||
|
||
ptPtr->pu8Buf = (uint8_t *)malloc(ptPtr->iBufSize);
|
||
if(NULL == ptPtr->pu8Buf)
|
||
{
|
||
RPT(RPT_ERR, "NULL ptPtr");
|
||
goto exit;
|
||
}
|
||
|
||
memcpy(ptPtr->pu8Buf, ptBufPtr->pu8Buf, ptBufPtr->iBufSize);
|
||
|
||
pu8TmpPtr = ptPtr->pu8Buf;
|
||
tmp_buf_size = ptPtr->iBufSize;
|
||
for(i=0; i<(tmp_buf_size-2); i++)
|
||
{
|
||
/*¼ì²â0x000003*/
|
||
iVal = (pu8TmpPtr[i]^0x00) + (pu8TmpPtr[i+1]^0x00) + (pu8TmpPtr[i+2]^0x03);
|
||
if(iVal == 0)
|
||
{
|
||
/*ÌÞ³ý0x03*/
|
||
for(j=i+2; j<tmp_buf_size-1; j++)
|
||
{
|
||
pu8TmpPtr[j] = pu8TmpPtr[j+1];
|
||
}
|
||
|
||
/*ÏàÓ¦µÄbufsizeÒª¼õС*/
|
||
ptPtr->iBufSize--;
|
||
}
|
||
}
|
||
|
||
/*ÖØмÆËãtotal_bit*/
|
||
ptPtr->iTotalBit = ptPtr->iBufSize << 3;
|
||
|
||
return (void *)ptPtr;
|
||
|
||
exit:
|
||
getBitContextFree(ptPtr);
|
||
return NULL;
|
||
}
|
||
|
||
static void decodeScalingList(void *pvBuf, uint8_t *pu8Factors, int iSize,
|
||
const uint8_t *pu8JvtList,
|
||
const uint8_t *pu8FallbackList)
|
||
{
|
||
int i;
|
||
int iLast = 8;
|
||
int iNext = 8;
|
||
const uint8_t *pu8Scan = iSize == 16 ? sg_au8ZigzagScan : g_au8FfZigzagDirect;
|
||
|
||
if (!getOneBit(pvBuf)) /* matrix not written, we use the predicted one */
|
||
memcpy(pu8Factors, pu8FallbackList, iSize * sizeof(uint8_t));
|
||
else
|
||
for (i = 0; i < iSize; i++)
|
||
{
|
||
if (iNext)
|
||
{
|
||
|
||
iNext = (iLast + parseSe(pvBuf)) & 0xff;
|
||
}
|
||
if (!i && !iNext)
|
||
{
|
||
/* matrix not written, we use the preset one */
|
||
memcpy(pu8Factors, pu8JvtList, iSize * sizeof(uint8_t));
|
||
break;
|
||
}
|
||
iLast = pu8Factors[pu8Scan[i]] = iNext ? iNext : iLast;
|
||
}
|
||
}
|
||
|
||
|
||
int decodeScalingMatrices(void *pvBuf, T_SPS *ptSps,
|
||
T_PPS *ptPps, int iIsSps,
|
||
uint8_t(*pau8ScalingMatrix4)[16],
|
||
uint8_t(*pau8ScalingMatrix8)[64])
|
||
{
|
||
int iFallbackSps = !iIsSps && ptSps->iScalingMatrixPresent;
|
||
const uint8_t *pau8Fallback[4] = {
|
||
iFallbackSps ? ptSps->aau8ScalingMatrix4[0] : sg_aau8DefaultScaling4[0],
|
||
iFallbackSps ? ptSps->aau8ScalingMatrix4[3] : sg_aau8DefaultScaling4[1],
|
||
iFallbackSps ? ptSps->aau8ScalingMatrix8[0] : sg_aau8DefaultScaling8[0],
|
||
iFallbackSps ? ptSps->aau8ScalingMatrix8[3] : sg_aau8DefaultScaling8[1]
|
||
};
|
||
if (getOneBit(pvBuf)) {
|
||
ptSps->iScalingMatrixPresent |= iIsSps;
|
||
decodeScalingList(pvBuf, pau8ScalingMatrix4[0], 16, sg_aau8DefaultScaling4[0], pau8Fallback[0]); // Intra, Y
|
||
decodeScalingList(pvBuf, pau8ScalingMatrix4[1], 16, sg_aau8DefaultScaling4[0], pau8ScalingMatrix4[0]); // Intra, Cr
|
||
decodeScalingList(pvBuf, pau8ScalingMatrix4[2], 16, sg_aau8DefaultScaling4[0], pau8ScalingMatrix4[1]); // Intra, Cb
|
||
|
||
decodeScalingList(pvBuf, pau8ScalingMatrix4[3], 16, sg_aau8DefaultScaling4[1], pau8Fallback[1]); // Inter, Y
|
||
|
||
decodeScalingList(pvBuf, pau8ScalingMatrix4[4], 16, sg_aau8DefaultScaling4[1], pau8ScalingMatrix4[3]); // Inter, Cr
|
||
|
||
decodeScalingList(pvBuf, pau8ScalingMatrix4[5], 16, sg_aau8DefaultScaling4[1], pau8ScalingMatrix4[4]); // Inter, Cb
|
||
|
||
|
||
if (iIsSps || ptPps->iTransform8x8Mode)
|
||
{
|
||
decodeScalingList(pvBuf, pau8ScalingMatrix8[0], 64, sg_aau8DefaultScaling8[0], pau8Fallback[2]); // Intra, Y
|
||
decodeScalingList(pvBuf, pau8ScalingMatrix8[3], 64, sg_aau8DefaultScaling8[1], pau8Fallback[3]); // Inter, Y
|
||
if (ptSps->iChromaFormatIdc == 3) {
|
||
decodeScalingList(pvBuf, pau8ScalingMatrix8[1], 64, sg_aau8DefaultScaling8[0], pau8ScalingMatrix8[0]); // Intra, Cr
|
||
decodeScalingList(pvBuf, pau8ScalingMatrix8[4], 64, sg_aau8DefaultScaling8[1], pau8ScalingMatrix8[3]); // Inter, Cr
|
||
decodeScalingList(pvBuf, pau8ScalingMatrix8[2], 64, sg_aau8DefaultScaling8[0], pau8ScalingMatrix8[1]); // Intra, Cb
|
||
decodeScalingList(pvBuf, pau8ScalingMatrix8[5], 64, sg_aau8DefaultScaling8[1], pau8ScalingMatrix8[4]); // Inter, Cb
|
||
}
|
||
}
|
||
}
|
||
return 0;
|
||
}
|
||
|
||
static int decodeHrdPAarameters(void *pvBuf, T_SPS *ptSps)
|
||
{
|
||
int iCpbCount = 0;
|
||
int i;
|
||
iCpbCount = parseUe(pvBuf);
|
||
|
||
if (iCpbCount > 32U)
|
||
{
|
||
RPT(RPT_ERR,"iCpbCount %d invalid\n", iCpbCount);
|
||
return -1;
|
||
|
||
}
|
||
|
||
getBits(pvBuf, 4); /* bit_rate_scale */
|
||
getBits(pvBuf, 4); /* cpb_size_scale */
|
||
for (i = 0; i < iCpbCount; i++)
|
||
{
|
||
parseUe(pvBuf);
|
||
parseUe(pvBuf);
|
||
//get_ue_golomb_long(&h->gb); /* bit_rate_value_minus1 */
|
||
//get_ue_golomb_long(&h->gb); /* cpb_size_value_minus1 */
|
||
getOneBit(pvBuf); /* cbr_flag */
|
||
}
|
||
ptSps->iInitialCpbRemovalDelayLength = getBits(pvBuf, 5) + 1;
|
||
ptSps->iCpbRemovalDelayLength = getBits(pvBuf, 5) + 1;
|
||
ptSps->iDpbOutputDelayLength = getBits(pvBuf, 5) + 1;
|
||
ptSps->iTimeOffsetLength = getBits(pvBuf, 5);
|
||
ptSps->iCpbCnt = iCpbCount;
|
||
return 0;
|
||
}
|
||
|
||
|
||
static inline int decodeVuiParameters(void *pvBuf, T_SPS *ptSps)
|
||
{
|
||
int iAspectRatioInfoPresentFlag;
|
||
unsigned int uiAspectRatioIdc;
|
||
int iChromaSampleLocation;
|
||
|
||
iAspectRatioInfoPresentFlag = getOneBit(pvBuf);
|
||
|
||
if (iAspectRatioInfoPresentFlag) {
|
||
uiAspectRatioIdc = getBits(pvBuf, 8);
|
||
if (uiAspectRatioIdc == EXTENDED_SAR) {
|
||
ptSps->tSar.num = getBits(pvBuf, 16);
|
||
ptSps->tSar.den = getBits(pvBuf, 16);
|
||
} else if (uiAspectRatioIdc < FF_ARRAY_ELEMS(sg_atFfH264PixelSspect)) {
|
||
ptSps->tSar = sg_atFfH264PixelSspect[uiAspectRatioIdc];
|
||
} else
|
||
{
|
||
RPT(RPT_ERR,"illegal aspect ratio\n");
|
||
return -1;
|
||
}
|
||
} else
|
||
{
|
||
ptSps->tSar.num =
|
||
ptSps->tSar.den = 0;
|
||
}
|
||
|
||
if (getOneBit(pvBuf)) /* overscan_info_present_flag */
|
||
getOneBit(pvBuf); /* overscan_appropriate_flag */
|
||
|
||
ptSps->iVideoSignalTypePresentFlag = getOneBit(pvBuf);
|
||
if (ptSps->iVideoSignalTypePresentFlag) {
|
||
getBits(pvBuf, 3); /* video_format */
|
||
ptSps->iFullRange = getOneBit(pvBuf); /* video_full_range_flag */
|
||
|
||
ptSps->iColourDescriptionPresentFlag = getOneBit(pvBuf);
|
||
if (ptSps->iColourDescriptionPresentFlag) {
|
||
ptSps->tColorPrimaries = getBits(pvBuf, 8); /* colour_primaries */
|
||
ptSps->tColorTrc = getBits(pvBuf, 8); /* transfer_characteristics */
|
||
ptSps->tColorspace = getBits(pvBuf, 8); /* matrix_coefficients */
|
||
if (ptSps->tColorPrimaries >= AVCOL_PRI_NB)
|
||
ptSps->tColorPrimaries = AVCOL_PRI_UNSPECIFIED;
|
||
if (ptSps->tColorTrc >= AVCOL_TRC_NB)
|
||
ptSps->tColorTrc = AVCOL_TRC_UNSPECIFIED;
|
||
if (ptSps->tColorspace >= AVCOL_SPC_NB)
|
||
ptSps->tColorspace = AVCOL_SPC_UNSPECIFIED;
|
||
}
|
||
}
|
||
|
||
/* chroma_location_info_present_flag */
|
||
if (getOneBit(pvBuf))
|
||
{
|
||
/* chroma_sample_location_type_top_field */
|
||
iChromaSampleLocation = parseUe(pvBuf);
|
||
parseUe(pvBuf); /* chroma_sample_location_type_bottom_field */
|
||
}
|
||
if(getBitsLeft(pvBuf) < 10)
|
||
{
|
||
return 0;
|
||
}
|
||
|
||
|
||
ptSps->iTimingInfoPresentFlag = getOneBit(pvBuf);
|
||
if (ptSps->iTimingInfoPresentFlag) {
|
||
unsigned u32NumUnitsInTick = getBits(pvBuf, 32);
|
||
unsigned u32TimeScale = getBits(pvBuf, 32);
|
||
if (!u32NumUnitsInTick || !u32TimeScale) {
|
||
|
||
RPT(RPT_ERR,"u32TimeScale/u32NumUnitsInTick invalid or unsupported (%u/%u)\n",u32TimeScale, u32NumUnitsInTick);
|
||
ptSps->iTimingInfoPresentFlag = 0;
|
||
} else {
|
||
ptSps->u32NumUnitsInTick = u32NumUnitsInTick;
|
||
ptSps->u32TimeScale = u32TimeScale;
|
||
}
|
||
ptSps->iFixedFrameRateFlag = getOneBit(pvBuf);
|
||
}
|
||
|
||
ptSps->iNalHrdParametersPresentFlag = getOneBit(pvBuf);
|
||
if (ptSps->iNalHrdParametersPresentFlag)
|
||
if (decodeHrdPAarameters(pvBuf, ptSps) < 0)
|
||
return -1;
|
||
ptSps->iVclHrdParametersPresentFlag = getOneBit(pvBuf);
|
||
if (ptSps->iVclHrdParametersPresentFlag)
|
||
if (decodeHrdPAarameters(pvBuf, ptSps) < 0)
|
||
return -1;
|
||
if (ptSps->iNalHrdParametersPresentFlag ||
|
||
ptSps->iVclHrdParametersPresentFlag)
|
||
getOneBit(pvBuf); /* low_delay_hrd_flag */
|
||
ptSps->iPicStructPresentFlag = getOneBit(pvBuf);
|
||
|
||
if(getBitsLeft(pvBuf) == 0)
|
||
return 0;
|
||
ptSps->iBitstreamRestrictionFlag = getOneBit(pvBuf);
|
||
if (ptSps->iBitstreamRestrictionFlag) {
|
||
getOneBit(pvBuf); /* motion_vectors_over_pic_boundaries_flag */
|
||
parseUe(pvBuf);
|
||
//get_ue_golomb(&h->gb); /* max_bytes_per_pic_denom */
|
||
parseUe(pvBuf);
|
||
//get_ue_golomb(&h->gb); /* max_bits_per_mb_denom */
|
||
parseUe(pvBuf);
|
||
//get_ue_golomb(&h->gb); /* log2_max_mv_length_horizontal */
|
||
parseUe(pvBuf);
|
||
//get_ue_golomb(&h->gb); /* log2_max_mv_length_vertical */
|
||
ptSps->iNumReorderFrames = parseUe(pvBuf);
|
||
|
||
parseUe(pvBuf);
|
||
//get_ue_golomb(&h->gb); /*max_dec_frame_buffering*/
|
||
|
||
if (getBitsLeft(pvBuf) < 0)
|
||
{
|
||
ptSps->iNumReorderFrames = 0;
|
||
ptSps->iBitstreamRestrictionFlag = 0;
|
||
}
|
||
|
||
if (ptSps->iNumReorderFrames > 16U
|
||
/* max_dec_frame_buffering || max_dec_frame_buffering > 16 */)
|
||
{
|
||
RPT(RPT_DBG, "Clipping illegal iNumReorderFrames %d\n",
|
||
ptSps->iNumReorderFrames);
|
||
ptSps->iNumReorderFrames = 16;
|
||
return -1;
|
||
}
|
||
}
|
||
|
||
return 0;
|
||
}
|
||
|
||
|
||
int h264DecSeqParameterSet(void *pvBufSrc, T_SPS *ptSps)
|
||
{
|
||
int iLevelIdc;
|
||
int iConstraintSetFlags = 0;
|
||
unsigned int uiSpsId;
|
||
int i;
|
||
int iLog2MaxFrameNumMinus4;
|
||
|
||
int iRet = 0;
|
||
int iProfileIdc = 0;
|
||
void *pvBuf = NULL;
|
||
|
||
|
||
|
||
if(NULL == pvBufSrc || NULL == ptSps)
|
||
{
|
||
RPT(RPT_ERR,"ERR null pointer\n");
|
||
iRet = -1;
|
||
goto exit;
|
||
}
|
||
|
||
memset((void *)ptSps, 0, sizeof(T_SPS));
|
||
|
||
pvBuf = deEmulationPrevention(pvBufSrc);
|
||
if(NULL == pvBuf)
|
||
{
|
||
RPT(RPT_ERR,"ERR null pointer\n");
|
||
iRet = -1;
|
||
goto exit;
|
||
}
|
||
|
||
iProfileIdc = getBits(pvBuf, 8);
|
||
iConstraintSetFlags |= getOneBit(pvBuf) << 0; // constraint_set0_flag
|
||
iConstraintSetFlags |= getOneBit(pvBuf) << 1; // constraint_set1_flag
|
||
iConstraintSetFlags |= getOneBit(pvBuf) << 2; // constraint_set2_flag
|
||
iConstraintSetFlags |= getOneBit(pvBuf) << 3; // constraint_set3_flag
|
||
iConstraintSetFlags |= getOneBit(pvBuf) << 4; // constraint_set4_flag
|
||
iConstraintSetFlags |= getOneBit(pvBuf) << 5; // constraint_set5_flag
|
||
getBits(pvBuf, 2); // reserved_zero_2bits
|
||
iLevelIdc = getBits(pvBuf, 8);
|
||
uiSpsId = parseUe(pvBuf);
|
||
|
||
if (uiSpsId >= MAX_SPS_COUNT) {
|
||
RPT(RPT_ERR, "uiSpsId %u out of range\n", uiSpsId);
|
||
iRet = -1;
|
||
goto exit;
|
||
|
||
}
|
||
|
||
|
||
ptSps->uiSpsId = uiSpsId;
|
||
ptSps->iTimeOffsetLength = 24;
|
||
ptSps->iProfileIdc = iProfileIdc;
|
||
ptSps->iConstraintSetFlags = iConstraintSetFlags;
|
||
ptSps->iLevelIdc = iLevelIdc;
|
||
ptSps->iFullRange = -1;
|
||
|
||
memset(ptSps->aau8ScalingMatrix4, 16, sizeof(ptSps->aau8ScalingMatrix4));
|
||
memset(ptSps->aau8ScalingMatrix8, 16, sizeof(ptSps->aau8ScalingMatrix8));
|
||
ptSps->iScalingMatrixPresent = 0;
|
||
ptSps->tColorspace = 2; //AVCOL_SPC_UNSPECIFIED
|
||
|
||
if (ptSps->iProfileIdc == 100 || // High profile
|
||
ptSps->iProfileIdc == 110 || // High10 profile
|
||
ptSps->iProfileIdc == 122 || // High422 profile
|
||
ptSps->iProfileIdc == 244 || // High444 Predictive profile
|
||
ptSps->iProfileIdc == 44 || // Cavlc444 profile
|
||
ptSps->iProfileIdc == 83 || // Scalable Constrained High profile (SVC)
|
||
ptSps->iProfileIdc == 86 || // Scalable High Intra profile (SVC)
|
||
ptSps->iProfileIdc == 118 || // Stereo High profile (MVC)
|
||
ptSps->iProfileIdc == 128 || // Multiview High profile (MVC)
|
||
ptSps->iProfileIdc == 138 || // Multiview Depth High profile (MVCD)
|
||
ptSps->iProfileIdc == 144) { // old High444 profile
|
||
ptSps->iChromaFormatIdc = parseUe(pvBuf);
|
||
if (ptSps->iChromaFormatIdc > 3U)
|
||
{
|
||
RPT(RPT_ERR, "iChromaFormatIdc %u",ptSps->iChromaFormatIdc);
|
||
iRet = -1;
|
||
goto exit;
|
||
}
|
||
else if (ptSps->iChromaFormatIdc == 3)
|
||
{
|
||
ptSps->iResidualColorTransformFlag = getOneBit(pvBuf);
|
||
if (ptSps->iResidualColorTransformFlag)
|
||
{
|
||
RPT(RPT_ERR, "separate color planes are not supported\n");
|
||
iRet = -1;
|
||
goto exit;
|
||
|
||
}
|
||
}
|
||
ptSps->iBitDepthLuma = parseUe(pvBuf) + 8;
|
||
ptSps->iBitDepthChroma = parseUe(pvBuf) + 8;
|
||
if (ptSps->iBitDepthChroma != ptSps->iBitDepthLuma)
|
||
{
|
||
RPT(RPT_ERR, "Different chroma and luma bit depth");
|
||
iRet = -1;
|
||
goto exit;
|
||
|
||
}
|
||
if (ptSps->iBitDepthLuma < 8 || ptSps->iBitDepthLuma > 14 ||
|
||
ptSps->iBitDepthChroma < 8 || ptSps->iBitDepthChroma > 14)
|
||
{
|
||
RPT(RPT_ERR, "illegal bit depth value (%d, %d)\n",ptSps->iBitDepthLuma, ptSps->iBitDepthChroma);
|
||
iRet = -1;
|
||
goto exit;
|
||
}
|
||
ptSps->iTransformBypass = getOneBit(pvBuf);
|
||
decodeScalingMatrices(pvBuf, ptSps, NULL, 1,
|
||
ptSps->aau8ScalingMatrix4, ptSps->aau8ScalingMatrix8);
|
||
}
|
||
else
|
||
{
|
||
|
||
ptSps->iChromaFormatIdc = 1;
|
||
ptSps->iBitDepthLuma = 8;
|
||
ptSps->iBitDepthChroma = 8;
|
||
}
|
||
|
||
iLog2MaxFrameNumMinus4 = parseUe(pvBuf);
|
||
|
||
if (iLog2MaxFrameNumMinus4 < MIN_LOG2_MAX_FRAME_NUM - 4 ||
|
||
iLog2MaxFrameNumMinus4 > MAX_LOG2_MAX_FRAME_NUM - 4)
|
||
{
|
||
RPT(RPT_ERR, "iLog2MaxFrameNumMinus4 out of range (0-12): %d\n", iLog2MaxFrameNumMinus4);
|
||
iRet = -1;
|
||
goto exit;
|
||
|
||
}
|
||
ptSps->iLog2MaxFrameNum = iLog2MaxFrameNumMinus4 + 4;
|
||
|
||
ptSps->iPocType = parseUe(pvBuf);
|
||
|
||
if (ptSps->iPocType == 0)
|
||
{
|
||
// FIXME #define
|
||
unsigned t = parseUe(pvBuf);
|
||
if (t>12)
|
||
{
|
||
RPT(RPT_ERR, "iLog2MaxPocLsb (%d) is out of range\n", t);
|
||
iRet = -1;
|
||
goto exit;
|
||
|
||
}
|
||
ptSps->iLog2MaxPocLsb = t + 4;
|
||
}
|
||
else if (ptSps->iPocType == 1)
|
||
{
|
||
// FIXME #define
|
||
ptSps->iDeltaPicOrderAlwaysZeroFlag = getOneBit(pvBuf);
|
||
ptSps->iOffsetForNonRefPic = parseSe(pvBuf);
|
||
ptSps->iOffsetForTopToBottomField = parseSe(pvBuf);
|
||
ptSps->iPocCycleLength = parseUe(pvBuf);
|
||
|
||
if ((unsigned)ptSps->iPocCycleLength >= FF_ARRAY_ELEMS(ptSps->asOffsetForRefFrame))
|
||
{
|
||
RPT(RPT_ERR, "iPocCycleLength overflow %d\n", ptSps->iPocCycleLength);
|
||
iRet = -1;
|
||
goto exit;
|
||
|
||
}
|
||
|
||
for (i = 0; i < ptSps->iPocCycleLength; i++)
|
||
ptSps->asOffsetForRefFrame[i] = parseSe(pvBuf);
|
||
}
|
||
else if (ptSps->iPocType != 2)
|
||
{
|
||
RPT(RPT_ERR, "illegal POC type %d\n", ptSps->iPocType);
|
||
iRet = -1;
|
||
goto exit;
|
||
|
||
}
|
||
|
||
ptSps->iRefFrameCount = parseUe(pvBuf);
|
||
if (ptSps->iRefFrameCount > H264_MAX_PICTURE_COUNT - 2 ||
|
||
ptSps->iRefFrameCount > 16U)
|
||
{
|
||
RPT(RPT_ERR, "too many reference frames %d\n", ptSps->iRefFrameCount);
|
||
iRet = -1;
|
||
goto exit;
|
||
|
||
}
|
||
ptSps->iGapsInFrameNumAllowedFlag = getOneBit(pvBuf);
|
||
ptSps->iMbWidth = parseUe(pvBuf) + 1;
|
||
ptSps->iMbHeight = parseUe(pvBuf) + 1;
|
||
|
||
|
||
ptSps->iFrameMbsOnlyFlag = getOneBit(pvBuf);
|
||
if (!ptSps->iFrameMbsOnlyFlag)
|
||
ptSps->iMbAff = getOneBit(pvBuf);
|
||
else
|
||
ptSps->iMbAff = 0;
|
||
|
||
ptSps->iDirect8x8InferenceFlag = getOneBit(pvBuf);
|
||
|
||
ptSps->iCrop = getOneBit(pvBuf);
|
||
if (ptSps->iCrop) {
|
||
unsigned int uiCropLeft = parseUe(pvBuf);
|
||
unsigned int uiCropRight = parseUe(pvBuf);
|
||
unsigned int uiCropTop = parseUe(pvBuf);
|
||
unsigned int uiCropBottom = parseUe(pvBuf);
|
||
int width = 16 * ptSps->iMbWidth;
|
||
int height = 16 * ptSps->iMbHeight * (2 - ptSps->iFrameMbsOnlyFlag);
|
||
|
||
if(1)
|
||
{
|
||
int vsub = (ptSps->iChromaFormatIdc == 1) ? 1 : 0;
|
||
int hsub = (ptSps->iChromaFormatIdc == 1 ||
|
||
ptSps->iChromaFormatIdc == 2) ? 1 : 0;
|
||
int step_x = 1 << hsub;
|
||
int step_y = (2 - ptSps->iFrameMbsOnlyFlag) << vsub;
|
||
|
||
if (uiCropLeft & (0x1F >> (ptSps->iBitDepthLuma > 8)))
|
||
{
|
||
uiCropLeft &= ~(0x1F >> (ptSps->iBitDepthLuma > 8));
|
||
}
|
||
|
||
if (uiCropLeft > (unsigned)INT_MAX / 4 / step_x ||
|
||
uiCropRight > (unsigned)INT_MAX / 4 / step_x ||
|
||
uiCropTop > (unsigned)INT_MAX / 4 / step_y ||
|
||
uiCropBottom> (unsigned)INT_MAX / 4 / step_y ||
|
||
(uiCropLeft + uiCropRight ) * step_x >= width ||
|
||
(uiCropTop + uiCropBottom) * step_y >= height
|
||
)
|
||
{
|
||
RPT(RPT_ERR, "crop values invalid %d %d %d %d / %d %d\n", uiCropLeft, uiCropRight, uiCropTop, uiCropBottom, width, height);
|
||
iRet = -1;
|
||
goto exit;
|
||
}
|
||
|
||
ptSps->uiCropLeft = uiCropLeft * step_x;
|
||
ptSps->uiCropRight = uiCropRight * step_x;
|
||
ptSps->uiCropTop = uiCropTop * step_y;
|
||
ptSps->uiCropBottom = uiCropBottom * step_y;
|
||
}
|
||
}
|
||
else
|
||
{
|
||
ptSps->uiCropLeft =
|
||
ptSps->uiCropRight =
|
||
ptSps->uiCropTop =
|
||
ptSps->uiCropBottom =
|
||
ptSps->iCrop = 0;
|
||
}
|
||
|
||
ptSps->iVuiParametersPresentFlag = getOneBit(pvBuf);
|
||
if (ptSps->iVuiParametersPresentFlag) {
|
||
int ret = decodeVuiParameters(pvBuf, ptSps);
|
||
if (ret < 0)
|
||
goto exit;
|
||
}
|
||
|
||
if (getBitsLeft(pvBuf) < 0)
|
||
{
|
||
RPT(RPT_ERR, "Overread %s by %d bits\n", ptSps->iVuiParametersPresentFlag ? "VUI" : "SPS", -getBitsLeft(pvBuf));
|
||
iRet = -1;
|
||
}
|
||
|
||
if (!ptSps->tSar.den)
|
||
ptSps->tSar.den = 1;
|
||
|
||
ptSps->iNew = 1;
|
||
|
||
exit:
|
||
#ifdef SPS_PPS_DEBUG
|
||
|
||
if (1)
|
||
{
|
||
static const char csp[4][5] = { "Gray", "420", "422", "444" };
|
||
RPT(RPT_DBG,
|
||
"ptSps:%u profile:%d/%d poc:%d ref:%d %dx%d %s %s crop:%u/%u/%u/%u %s %s %d/%d b%d reo:%d\n",
|
||
uiSpsId, ptSps->iProfileIdc, ptSps->iLevelIdc,
|
||
ptSps->iPocType,
|
||
ptSps->iRefFrameCount,
|
||
ptSps->iMbWidth, ptSps->iMbHeight,
|
||
ptSps->iFrameMbsOnlyFlag ? "FRM" : (ptSps->iMbAff ? "MB-AFF" : "PIC-AFF"),
|
||
ptSps->iDirect8x8InferenceFlag ? "8B8" : "",
|
||
ptSps->uiCropLeft, ptSps->uiCropRight,
|
||
ptSps->uiCropTop, ptSps->uiCropBottom,
|
||
ptSps->iVuiParametersPresentFlag ? "VUI" : "",
|
||
csp[ptSps->iChromaFormatIdc],
|
||
ptSps->iTimingInfoPresentFlag ? ptSps->u32NumUnitsInTick : 0,
|
||
ptSps->iTimingInfoPresentFlag ? ptSps->u32TimeScale : 0,
|
||
ptSps->iBitDepthLuma,
|
||
ptSps->iBitstreamRestrictionFlag ? ptSps->iNumReorderFrames : -1
|
||
);
|
||
}
|
||
|
||
#endif
|
||
getBitContextFree(pvBuf);
|
||
|
||
return iRet;
|
||
}
|
||
|
||
void h264GetWidthHeight(T_SPS *ptSps, int *piWidth, int *piHeight)
|
||
{
|
||
// ¿í¸ß¼ÆË㹫ʽ
|
||
int iCodeWidth = 0;
|
||
int iCodedHeight = 0;
|
||
iCodeWidth = 16 * ptSps->iMbWidth;
|
||
iCodedHeight = 16 * ptSps->iMbHeight;
|
||
*piWidth = iCodeWidth - (ptSps->uiCropRight + ptSps->uiCropLeft);
|
||
*piHeight = iCodedHeight - (ptSps->uiCropTop + ptSps->uiCropBottom);
|
||
if (*piWidth <= 0 || *piHeight <= 0) {
|
||
*piWidth = iCodeWidth;
|
||
*piHeight = iCodedHeight;
|
||
}
|
||
|
||
RPT(RPT_DBG, "iCodeWidth:%d, iCodedHeight:%d\n", iCodeWidth, iCodedHeight);
|
||
|
||
RPT(RPT_DBG, "*piWidth:%d, *piHeight:%d\n", *piWidth, *piHeight);
|
||
|
||
RPT(RPT_DBG, "ptSps->uiCropRight:%d, ptSps->uiCropLeft:%d\n", ptSps->uiCropRight, ptSps->uiCropLeft);
|
||
|
||
RPT(RPT_DBG, "ptSps->uiCropTop:%d, ptSps->uiCropBottom:%d\n", ptSps->uiCropTop, ptSps->uiCropBottom);
|
||
|
||
}
|
||
|
||
int h264GetFormat(T_SPS *ptSps)
|
||
{
|
||
return ptSps->iFrameMbsOnlyFlag;
|
||
}
|
||
|
||
|
||
void h264GeFramerate(T_SPS *ptSps, float *pfFramerate)
|
||
{
|
||
int iFrInt = 0;
|
||
if(ptSps->iTimingInfoPresentFlag)
|
||
{
|
||
if(!ptSps->iFixedFrameRateFlag)
|
||
{
|
||
*pfFramerate = (float)ptSps->u32TimeScale / (float)ptSps->u32NumUnitsInTick;
|
||
//iFrInt = ptSps->vui_parameters.u32TimeScale / ptSps->vui_parameters.u32NumUnitsInTick;
|
||
}else
|
||
{
|
||
*pfFramerate = (float)ptSps->u32TimeScale / (float)ptSps->u32NumUnitsInTick / 2.0;
|
||
//iFrInt = ptSps->vui_parameters.u32TimeScale / ptSps->vui_parameters.u32NumUnitsInTick / 2;
|
||
}
|
||
iFrInt = ptSps->u32TimeScale / ptSps->u32NumUnitsInTick / 2;
|
||
}
|
||
switch(iFrInt)
|
||
{
|
||
case 23:// 23.98
|
||
RPT(RPT_DBG, "frame rate:23.98");
|
||
break;
|
||
case 24:
|
||
RPT(RPT_DBG, "frame rate:24");
|
||
break;
|
||
case 25:
|
||
RPT(RPT_DBG, "frame rate:25");
|
||
break;
|
||
case 29://29.97
|
||
RPT(RPT_DBG, "frame rate:29.97");
|
||
break;
|
||
case 30:
|
||
RPT(RPT_DBG, "frame rate:30");
|
||
break;
|
||
case 50:
|
||
RPT(RPT_DBG, "frame rate:50");
|
||
break;
|
||
case 59://59.94
|
||
RPT(RPT_DBG, "frame rate:59.94");
|
||
break;
|
||
case 60:
|
||
RPT(RPT_DBG, "frame rate:60");
|
||
break;
|
||
case 6:
|
||
RPT(RPT_DBG, "frame rate:6");
|
||
break;
|
||
case 8:
|
||
RPT(RPT_DBG, "frame rate:8");
|
||
break;
|
||
case 12:
|
||
RPT(RPT_DBG, "frame rate:12");
|
||
break;
|
||
case 15:
|
||
RPT(RPT_DBG, "frame rate:15");
|
||
break;
|
||
case 10:
|
||
RPT(RPT_DBG, "frame rate:10");
|
||
break;
|
||
|
||
default:
|
||
RPT(RPT_DBG, "frame rate:0");
|
||
break;
|
||
}
|
||
|
||
return;
|
||
}
|
||
|
||
|
||
|