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POIphone Streaming and playing Audio Problem
 

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    <p>I am trying to make an app that plays audio stream using ffmpeg, libmms.<br> I can open mms server, get stream, and decode audio frame to raw frame using suitable codec.<br> However I don't know how to do next.<br> I think I must use <code>AudioToolbox/AudioToolbox.h</code> and make audioqueue.<br> but however when I give audioqueuebuffer decode buffer's memory and play, Only plays the white noise.<br> Here is my code.</p> <p>What am i missing?<br> Any comment and hint is very appreciated.<br> Thanks very much.</p> <pre><code>while(av_read_frame(pFormatCtx, &amp;pkt)&gt;=0) { int pkt_decoded_len = 0; int frame_decoded_len; int decode_buff_remain=AVCODEC_MAX_AUDIO_FRAME_SIZE * 5; if(pkt.stream_index==audiostream) { frame_decoded_len=decode_buff_remain; int16_t *decode_buff_ptr = decode_buffer; int decoded_tot_len=0; pkt_decoded_len = avcodec_decode_audio2(pCodecCtx, decode_buff_ptr, &amp;frame_decoded_len, pkt.data, pkt.size); if (pkt_decoded_len &lt;0) break; AudioQueueAllocateBuffer(audioQueue, kBufferSize, &amp;buffers[i]); AQOutputCallback(self, audioQueue, buffers[i], pkt_decoded_len); if(i == 1){ AudioQueueSetParameter(audioQueue, kAudioQueueParam_Volume, 1.0); AudioQueueStart(audioQueue, NULL); } i++; } } void AQOutputCallback(void *inData, AudioQueueRef inAQ, AudioQueueBufferRef inBuffer, int copySize) { mmsDemoViewController *staticApp = (mmsDemoViewController *)inData; [staticApp handleBufferCompleteForQueue:inAQ buffer:inBuffer size:copySize]; } - (void)handleBufferCompleteForQueue:(AudioQueueRef)inAQ buffer:(AudioQueueBufferRef)inBuffer size:(int)copySize { inBuffer-&gt;mAudioDataByteSize = inBuffer-&gt;mAudioDataBytesCapacity; memcpy((char*)inBuffer-&gt;mAudioData, (const char*)decode_buffer, copySize); AudioQueueEnqueueBuffer(inAQ, inBuffer, 0, NULL); } </code></pre>
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