前面文章有人問(wèn)我解碼出來(lái)的264如何播放，一般用OPENGLES去渲染

• 這里只給關(guān)鍵部分代碼, 從最近做的項(xiàng)目里面摘出來(lái)的。
  這部分內(nèi)容推薦看一本書(shū)《音視頻進(jìn)階開(kāi)發(fā)指南Android和iOS》
c++

這里我定義了一個(gè)snode結(jié)構(gòu)體來(lái)存儲(chǔ)YUV數(shù)據(jù)蝎宇，這個(gè)自己也可以寫(xiě)；

還有一個(gè)經(jīng)常被忽略的問(wèn)題：記住處理內(nèi)存泄露的問(wèn)題脉执，如果常年不寫(xiě)c++的話(huà)可能會(huì)忽視掉這個(gè)問(wèn)題踢代。 用PS檢測(cè)內(nèi)存泄露情況盲憎，跑上個(gè)十來(lái)八個(gè)小時(shí)的看下內(nèi)存變換情況; 但是如果你常年寫(xiě)java,php,python且操作系統(tǒng)課本不扎實(shí)的話(huà)就得回頭好好補(bǔ)補(bǔ)了，代碼風(fēng)騷的背后需要理論功底去突破瓶頸胳挎，不需要背名詞饼疙，但要記原理。

        if (open_ret1 >= 0 ) {
                avcodec_decode_video2(rtspVideoCodecContext, v_frame, &got_picture, read_packet);
                printf("1\n");
                if (got_picture) {
                    // Init And Define YUV INFO
                    /* 
                    snode->luma = new unsigned char[width*height];
                    snode->chromaB = new unsigned char[width*height/4];
                    snode->chromaR = new unsigned char[width*height/4];
                    */

                    printf("alloc ok\n");
                    unsigned int height = rtspVideoCodecContext->height;
                    unsigned int width = rtspVideoCodecContext->width;
                    printf("decode video ok:%d,%d\n",width,height);

                    if (snode->luma != NULL) delete []snode->luma;
                    if (snode->chromaB != NULL) delete []snode->chromaB;
                    if (snode->chromaR != NULL) delete []snode->chromaR;
                    snode->luma = NULL;
                    snode->chromaB = NULL; 
                    snode->chromaR = NULL; 

                    snode->luma = new char[width*height];
                    snode->chromaB = new char[width*height/4];
                    snode->chromaR = new char[width*height/4];

                    int i;
                    for (i = 0; i<height; i++) {
                        memcpy(snode->luma + width*i, v_frame->data[0] + i * v_frame->linesize[0], width);
                        //memcpy(snode->luma + a, v_frame->data[0] + i * v_frame->linesize[0], width);
                    }
                    for (i = 0; i<height / 2; i++) {
                        memcpy(snode->chromaB + width/2*i, v_frame->data[1] + i * v_frame->linesize[1], width / 2);
                        //memcpy(snode->chromaB + a, v_frame->data[1] + i * v_frame->linesize[1], width / 2);
                    }
                    for (i = 0; i<height / 2; i++) {
                        memcpy(snode->chromaR + width/2*i, v_frame->data[2] + i * v_frame->linesize[2], width / 2);
                        //memcpy(snode->chromaR + a, v_frame->data[2] + i * v_frame->linesize[2], width / 2);
                    }

                    snode->luma_length = width*height;
                    snode->chromaB_length = (width*height)/4;
                    snode->chromaR_length = (width*height)/4;

                    snode->pts = read_packet->pts;
                    snode->width = width;
                    snode->height = height;

                    printf("decode video ok:%d,%d\n%d,%d,%d\n",width,height,snode->luma_length,snode->chromaB_length,snode->chromaR_length);

                    printf("set data ok\n");
                    printf("===>%d\n",snode->pts);
                    //exit(0);
                } // if got_pic
            }