mirror of
https://github.com/ZLMediaKit/ZLMediaKit.git
synced 2024-11-30 07:26:53 +08:00
119 lines
4.0 KiB
C++
119 lines
4.0 KiB
C++
/*
|
|
* Player.cpp
|
|
*
|
|
* Created on: 2016年12月2日
|
|
* Author: xzl
|
|
*/
|
|
|
|
#include <cstring>
|
|
#include "Player.h"
|
|
#include "H264/SPSParser.h"
|
|
#include "Util/logger.h"
|
|
|
|
using namespace ZL::Util;
|
|
|
|
static unsigned const samplingFrequencyTable[16] = { 96000, 88200,
|
|
64000, 48000, 44100, 32000, 24000, 22050, 16000, 12000, 11025,
|
|
8000, 7350, 0, 0, 0 };
|
|
|
|
void writeAdtsHeader(const AdtsFrame &hed, uint8_t *pcAdts) {
|
|
pcAdts[0] = (hed.syncword >> 4 & 0xFF); //8bit
|
|
pcAdts[1] = (hed.syncword << 4 & 0xF0); //4 bit
|
|
pcAdts[1] |= (hed.id << 3 & 0x08); //1 bit
|
|
pcAdts[1] |= (hed.layer << 1 & 0x06); //2bit
|
|
pcAdts[1] |= (hed.protection_absent & 0x01); //1 bit
|
|
|
|
pcAdts[2] = (hed.profile << 6 & 0xC0); // 2 bit
|
|
pcAdts[2] |= (hed.sf_index << 2 & 0x3C); //4bit
|
|
pcAdts[2] |= (hed.private_bit << 1 & 0x02); //1 bit
|
|
pcAdts[2] |= (hed.channel_configuration >> 2 & 0x03); //1 bit
|
|
|
|
pcAdts[3] = (hed.channel_configuration << 6 & 0xC0); // 2 bit
|
|
pcAdts[3] |= (hed.original << 5 & 0x20); //1 bit
|
|
pcAdts[3] |= (hed.home << 4 & 0x10); //1 bit
|
|
pcAdts[3] |= (hed.copyright_identification_bit << 3 & 0x08); //1 bit
|
|
pcAdts[3] |= (hed.copyright_identification_start << 2 & 0x04); //1 bit
|
|
pcAdts[3] |= (hed.aac_frame_length >> 11 & 0x03); //2 bit
|
|
|
|
pcAdts[4] = (hed.aac_frame_length >> 3 & 0xFF); //8 bit
|
|
|
|
pcAdts[5] = (hed.aac_frame_length << 5 & 0xE0); //3 bit
|
|
pcAdts[5] |= (hed.adts_buffer_fullness >> 6 & 0x1F); //5 bit
|
|
|
|
pcAdts[6] = (hed.adts_buffer_fullness << 2 & 0xFC); //6 bit
|
|
pcAdts[6] |= (hed.no_raw_data_blocks_in_frame & 0x03); //2 bit
|
|
}
|
|
string makeAdtsConfig(const uint8_t *pcAdts){
|
|
if (!(pcAdts[0] == 0xFF && (pcAdts[1] & 0xF0) == 0xF0)) {
|
|
return "";
|
|
}
|
|
// Get and check the 'profile':
|
|
unsigned char profile = (pcAdts[2] & 0xC0) >> 6; // 2 bits
|
|
if (profile == 3) {
|
|
return "";
|
|
}
|
|
|
|
// Get and check the 'sampling_frequency_index':
|
|
unsigned char sampling_frequency_index = (pcAdts[2] & 0x3C) >> 2; // 4 bits
|
|
if (samplingFrequencyTable[sampling_frequency_index] == 0) {
|
|
return "";
|
|
}
|
|
|
|
// Get and check the 'channel_configuration':
|
|
unsigned char channel_configuration = ((pcAdts[2] & 0x01) << 2)
|
|
| ((pcAdts[3] & 0xC0) >> 6); // 3 bits
|
|
|
|
unsigned char audioSpecificConfig[2];
|
|
unsigned char const audioObjectType = profile + 1;
|
|
audioSpecificConfig[0] = (audioObjectType << 3) | (sampling_frequency_index >> 1);
|
|
audioSpecificConfig[1] = (sampling_frequency_index << 7) | (channel_configuration << 3);
|
|
return string((char *)audioSpecificConfig,2);
|
|
}
|
|
void makeAdtsHeader(const string &strAudioCfg,AdtsFrame &adts) {
|
|
uint8_t cfg1 = strAudioCfg[0];
|
|
uint8_t cfg2 = strAudioCfg[1];
|
|
|
|
int audioObjectType;
|
|
int sampling_frequency_index;
|
|
int channel_configuration;
|
|
|
|
audioObjectType = cfg1 >> 3;
|
|
sampling_frequency_index = ((cfg1 & 0x07) << 1) | (cfg2 >> 7);
|
|
channel_configuration = (cfg2 & 0x7F) >> 3;
|
|
|
|
adts.syncword = 0x0FFF;
|
|
adts.id = 0;
|
|
adts.layer = 0;
|
|
adts.protection_absent = 1;
|
|
adts.profile = audioObjectType - 1;
|
|
adts.sf_index = sampling_frequency_index;
|
|
adts.private_bit = 0;
|
|
adts.channel_configuration = channel_configuration;
|
|
adts.original = 0;
|
|
adts.home = 0;
|
|
adts.copyright_identification_bit = 0;
|
|
adts.copyright_identification_start = 0;
|
|
adts.aac_frame_length = 7;
|
|
adts.adts_buffer_fullness = 2047;
|
|
adts.no_raw_data_blocks_in_frame = 0;
|
|
}
|
|
void getAACInfo(const AdtsFrame &adts,int &iSampleRate,int &iChannel){
|
|
iSampleRate = samplingFrequencyTable[adts.sf_index];
|
|
iChannel = adts.channel_configuration;
|
|
}
|
|
bool getAVCInfo(const string& strSps,int &iVideoWidth, int &iVideoHeight, float &iVideoFps) {
|
|
T_GetBitContext tGetBitBuf;
|
|
T_SPS tH264SpsInfo;
|
|
memset(&tGetBitBuf,0,sizeof(tGetBitBuf));
|
|
memset(&tH264SpsInfo,0,sizeof(tH264SpsInfo));
|
|
tGetBitBuf.pu8Buf = (uint8_t *)strSps.data() + 1;
|
|
tGetBitBuf.iBufSize = strSps.size() - 1;
|
|
if(0 != h264DecSeqParameterSet((void *) &tGetBitBuf, &tH264SpsInfo)){
|
|
return false;
|
|
}
|
|
h264GetWidthHeight(&tH264SpsInfo, &iVideoWidth, &iVideoHeight);
|
|
h264GeFramerate(&tH264SpsInfo, &iVideoFps);
|
|
//FatalL << iVideoWidth << " " << iVideoHeight << " " << iVideoFps;
|
|
return true;
|
|
}
|