/* read all the available output packets (in general there may be any number of them */ // 编码和解码都是一样的,都是send 1次,然后receive多次, 直到AVERROR(EAGAIN)或者AVERROR_EOF while (ret >= 0) { ret = avcodec_receive_packet(ctx, pkt); if (ret == AVERROR(EAGAIN) || ret ==...
* @return 0 on success, otherwise negative error code: * AVERROR(EAGAIN): input is not accepted right now - the packet must be * resent after trying to read output * AVERROR_EOF: the decoder has been flushed, and no new packets can * be sent to it (also returned if more than 1 ...
ret = avcodec_receive_packet(c_ctx, newpkt);//newpkt.data即为编码后数据 if (ret == AVERROR(EAGAIN) || ret == AVERROR_EOF) { printf("read one finish\n"); break; } else if (ret < 0)//这个错误已经无法处理了,很严重,代码解决不了,就退出 { printf("Error, encoding audio frame\n...
在优化视频客观全参考算法（主要是PSNR, SSIM, MS-SSIM）时，我们首先利用FFmpeg提供的API（avcodec_sen...
ret=avcodec_receive_frame(dec_ctx, frame);if(ret == AVERROR(EAGAIN) || ret ==AVERROR_EOF)return;elseif(ret <0) { fprintf(stderr,"Error during decoding\n"); exit(1); }//采样位数 4位data_size = av_get_bytes_per_sample(dec_ctx->sample_fmt);if(data_size <0) {/*This should...
if (ret == AVERROR(EAGAIN) || ret == AVERROR_EOF) break; else if (ret < 0) { fprintf(stderr, "Error during encoding "); exit(1); } // 处理编码后的数据包,例如写入文件或通过网络发送 // process_packet(pkt); av_packet_unref(pkt); } av_packet_free(&pkt); usleep(...
* frame (depending on the decoder type) allocated by the * decoder. Note that the function will always call * av_frame_unref(frame) before doing anything else. * * @return * 0: success, a frame was returned * AVERROR(EAGAIN): output is not available in this state - user must try ...
receive EAGAIN:receive_frame返回值为EAGAIN,未能输出frame,需要输入更多的packet才能输出当前frame。 receive EOF :receive_frame返回值为EOF,当处于send EOF状态后,调用一次或者多次receive_frame后就能得到该状态,表示所有的帧已经被输出。 解码帧全部接收完成会返回EOF这时需要调用 avcodec_flush_buffers(input->acc);...
if(ret==AVERROR(EAGAIN)||ret==AVERROR_EOF){ break;// 继续发送数据 }elseif(ret<0){// 发生错误 fprintf(stderr,"Error receiving frame from decoder: %s\n",av_err2str(ret)); return; } uint8_t*out_ptr=(uint8_t*)*output_data+*output_size; ...
//把startActivity 换成startActivityForResult //然后重写onActivityResult方法 //—MainActivity btn.set...