blob: e29df93addcad7c888f4824684192f15c2dcbd06
| 1 | #include <stdio.h> |
| 2 | #include <stdarg.h> |
| 3 | #include <string.h> |
| 4 | #include <android/log.h> |
| 5 | #include <cutils/properties.h> |
| 6 | #include "THD_mediasource.h" |
| 7 | |
| 8 | extern "C" int read_buffer(unsigned char *buffer,int size); |
| 9 | |
| 10 | #define LOG_TAG "THD_Medissource" |
| 11 | #define ALOGI(...) __android_log_print(ANDROID_LOG_INFO,LOG_TAG,__VA_ARGS__) |
| 12 | #define ALOGE(...) __android_log_print(ANDROID_LOG_ERROR,LOG_TAG,__VA_ARGS__) |
| 13 | |
| 14 | namespace android { |
| 15 | |
| 16 | THD_MediaSource::THD_MediaSource(void *read_buffer) |
| 17 | { |
| 18 | ALOGI("%s %d \n",__FUNCTION__,__LINE__); |
| 19 | mStarted=false; |
| 20 | mMeta=new MetaData; |
| 21 | mDataSource=NULL; |
| 22 | mGroup=NULL; |
| 23 | mBytesReaded=0; |
| 24 | mCurrentTimeUs=0; |
| 25 | pStop_ReadBuf_Flag=NULL; |
| 26 | fpread_buffer=(fp_read_buffer)read_buffer; |
| 27 | sample_rate=48000;//96000; |
| 28 | ChNum=2; |
| 29 | frame_size=0; |
| 30 | bytes_readed_sum_pre=0; |
| 31 | bytes_readed_sum=0; |
| 32 | mSyncMain = false; |
| 33 | mMeta->setInt32(kKeyChannelCount, 2); |
| 34 | mMeta->setInt32(kKeySampleRate, 48000); |
| 35 | } |
| 36 | |
| 37 | THD_MediaSource::~THD_MediaSource() |
| 38 | { |
| 39 | ALOGI("%s %d \n",__FUNCTION__,__LINE__); |
| 40 | if (mStarted) { |
| 41 | stop(); |
| 42 | } |
| 43 | } |
| 44 | |
| 45 | int THD_MediaSource::GetSampleRate() |
| 46 | { |
| 47 | return sample_rate; |
| 48 | } |
| 49 | |
| 50 | int THD_MediaSource::GetChNum() |
| 51 | { |
| 52 | return ChNum; |
| 53 | } |
| 54 | |
| 55 | int* THD_MediaSource::Get_pStop_ReadBuf_Flag() |
| 56 | { |
| 57 | return pStop_ReadBuf_Flag; |
| 58 | } |
| 59 | |
| 60 | int THD_MediaSource::Set_pStop_ReadBuf_Flag(int *pStop) |
| 61 | { |
| 62 | pStop_ReadBuf_Flag = pStop; |
| 63 | |
| 64 | return 0; |
| 65 | } |
| 66 | |
| 67 | int THD_MediaSource::SetReadedBytes(int size) |
| 68 | { |
| 69 | mBytesReaded=size; |
| 70 | return 0; |
| 71 | } |
| 72 | |
| 73 | int THD_MediaSource::GetReadedBytes() |
| 74 | { |
| 75 | int bytes_used; |
| 76 | bytes_used=bytes_readed_sum-bytes_readed_sum_pre; |
| 77 | if(bytes_used<0) |
| 78 | { |
| 79 | ALOGI("[%s]bytes_readed_sum(%lld) < bytes_readed_sum_pre(%lld) \n",__FUNCTION__,bytes_readed_sum,bytes_readed_sum_pre); |
| 80 | bytes_used=0; |
| 81 | } |
| 82 | bytes_readed_sum_pre=bytes_readed_sum; |
| 83 | return bytes_used; |
| 84 | } |
| 85 | |
| 86 | sp<MetaData> THD_MediaSource::getFormat() { |
| 87 | ALOGI("%s %d \n",__FUNCTION__,__LINE__); |
| 88 | return mMeta; |
| 89 | } |
| 90 | |
| 91 | status_t THD_MediaSource::start(MetaData *params) |
| 92 | { |
| 93 | ALOGI("%s %d \n",__FUNCTION__,__LINE__); |
| 94 | mGroup = new MediaBufferGroup; |
| 95 | mGroup->add_buffer(new MediaBuffer(4096)); |
| 96 | mStarted = true; |
| 97 | return OK; |
| 98 | } |
| 99 | |
| 100 | status_t THD_MediaSource::stop() |
| 101 | { |
| 102 | ALOGI("%s %d \n",__FUNCTION__,__LINE__); |
| 103 | delete mGroup; |
| 104 | mGroup = NULL; |
| 105 | mStarted = false; |
| 106 | return OK; |
| 107 | } |
| 108 | |
| 109 | int THD_MediaSource::MediaSourceRead_buffer(unsigned char *buffer,int size) |
| 110 | { |
| 111 | int readcnt=0; |
| 112 | int readsum=0; |
| 113 | if(fpread_buffer!=NULL) |
| 114 | { |
| 115 | int sleep_time=0; |
| 116 | while((readsum<size)&& (*pStop_ReadBuf_Flag==0)) |
| 117 | { |
| 118 | readcnt=fpread_buffer(buffer+readsum,size-readsum); |
| 119 | if(readcnt<(size-readsum)){ |
| 120 | sleep_time++; |
| 121 | usleep(10000); |
| 122 | } |
| 123 | readsum+=readcnt; |
| 124 | if((sleep_time>0) && (sleep_time%100==0)){ //wait for max 10s to get audio data |
| 125 | ALOGE("[%s] Can't get data from audiobuffer,wait for %d ms\n ", __FUNCTION__,sleep_time*10); |
| 126 | } |
| 127 | } |
| 128 | bytes_readed_sum +=readsum; |
| 129 | if(*pStop_ReadBuf_Flag==1) |
| 130 | { |
| 131 | ALOGI("[%s] End of Stream: *pStop_ReadBuf_Flag==1\n ", __FUNCTION__); |
| 132 | } |
| 133 | return readsum; |
| 134 | }else{ |
| 135 | ALOGE("[%s]ERR: fpread_buffer=NULL\n ", __FUNCTION__); |
| 136 | return 0; |
| 137 | } |
| 138 | } |
| 139 | |
| 140 | status_t THD_MediaSource::read(MediaBuffer **out, const ReadOptions *options) |
| 141 | { |
| 142 | *out = NULL; |
| 143 | uint fourheader = 0; //au size and crc check and timing |
| 144 | uint syncheader = 0; //truehd sync words(word:four bytes) |
| 145 | uchar byte; |
| 146 | uchar byte2[2]; |
| 147 | uint ausize; //access unit size(byte) |
| 148 | uint i = 0; |
| 149 | |
| 150 | if(!mSyncMain){ |
| 151 | while(1)//max frame length is 4000 bytes |
| 152 | { |
| 153 | ALOGI("=======find sync main=====\n"); |
| 154 | if(MediaSourceRead_buffer((uchar*)&byte, 1) < 1){ |
| 155 | ALOGI("[%s,%d]read raw data from buffer failed\n",__FUNCTION__,__LINE__); |
| 156 | return ERROR_END_OF_STREAM; |
| 157 | } |
| 158 | fourheader = (fourheader << 8) | (syncheader >> 24); |
| 159 | syncheader = (syncheader << 8) | byte; |
| 160 | if(syncheader == TRUEHDSYNC){ |
| 161 | ausize = ((fourheader >> 16) & 0x0fff) << 1; |
| 162 | ChNum = 2; |
| 163 | sample_rate = 48000;//96000; |
| 164 | mSyncMain = true; |
| 165 | ALOGI("truehd: main sync word find ok\n"); |
| 166 | break; |
| 167 | } |
| 168 | } |
| 169 | #if 0 |
| 170 | if(i >= MAX_AUSIZE) |
| 171 | { |
| 172 | ALOGI("ERROR: can not find truehd main sync\n"); |
| 173 | return ERROR_UNSUPPORTED; |
| 174 | } |
| 175 | #endif |
| 176 | }else{ |
| 177 | if(MediaSourceRead_buffer((uchar*)&byte2, 2) < 2){ |
| 178 | ALOGI("[%s,%d]read raw data from buffer failed\n",__FUNCTION__,__LINE__); |
| 179 | return ERROR_END_OF_STREAM; |
| 180 | } |
| 181 | ausize = (((byte2[0]<< 8) | byte2[1]) & 0x0fff) << 1; |
| 182 | } |
| 183 | |
| 184 | if((ausize < MIN_AUSIZE) || (ausize > MAX_AUSIZE)){ |
| 185 | ALOGI("ERROR: access unit size can not accept!!!\n"); |
| 186 | return ERROR_UNSUPPORTED; |
| 187 | } |
| 188 | |
| 189 | |
| 190 | MediaBuffer *buffer; |
| 191 | status_t err = mGroup->acquire_buffer(&buffer); |
| 192 | if (err != OK) { |
| 193 | ALOGI("acquire_buffer buffer failed.\n"); |
| 194 | return err; |
| 195 | } |
| 196 | |
| 197 | if(syncheader == TRUEHDSYNC){ |
| 198 | memcpy((uchar *)(buffer->data()), &fourheader, 4); |
| 199 | memcpy((uchar *)((unsigned long)buffer->data() + 4), &syncheader, 4); |
| 200 | if (MediaSourceRead_buffer((uchar*)((unsigned long)buffer->data() + 8), ausize - 8) != (ausize - 8)) { |
| 201 | ALOGI("[%s %d]stream read failed\n",__FUNCTION__,__LINE__); |
| 202 | buffer->release(); |
| 203 | buffer = NULL; |
| 204 | return ERROR_END_OF_STREAM; |
| 205 | } |
| 206 | char *ptr = (char *)((unsigned long)buffer->data() + 8); |
| 207 | sample_rate = ((ptr[0] >> 4) & 0xf) & 8 ? 44100 : 48000; |
| 208 | ALOGI("[%s:%d] sample_rate = %d\n", __FUNCTION__, __LINE__, sample_rate); |
| 209 | }else{ |
| 210 | memcpy((uchar *)(buffer->data()), &byte2, 2); |
| 211 | if (MediaSourceRead_buffer((uchar*)((unsigned long)buffer->data() + 2), ausize - 2) != (ausize - 2)) { |
| 212 | ALOGI("[%s %d]stream read failed\n",__FUNCTION__,__LINE__); |
| 213 | buffer->release(); |
| 214 | buffer = NULL; |
| 215 | return ERROR_END_OF_STREAM; |
| 216 | } |
| 217 | } |
| 218 | |
| 219 | |
| 220 | buffer->set_range(0, ausize); |
| 221 | buffer->meta_data()->setInt64(kKeyTime, mCurrentTimeUs); |
| 222 | buffer->meta_data()->setInt32(kKeyIsSyncFrame, 1); |
| 223 | |
| 224 | *out = buffer; |
| 225 | return OK; |
| 226 | } |
| 227 | |
| 228 | } // namespace android |
| 229 | |
| 230 |