Hello all,
I've encountered with a problem. I made a small change to the code from
Dranger's tutorial02. (Raplace img_convert with sws_scale) When the
following loop is being executed, the amount of used memory is almost
linearly increased. After the playback is finished, the memory would be
released to the original level. However, I could not find any dynamic
allocation inside the loop. Why would that happened?
Sorry for my poor English skill, but that problem is really confusing me.
Thanks a lot in advance.
Mickey
while(av_read_frame(pFormatCtx, &packet)>=0)
{
if(packet.stream_index==videoStream)
{
fprintf(fp,"pts:%d\n",packet.pts);
avcodec_decode_video(pCodecCtx, pFrame, &frameFinished,packet.data,
packet.size);
fprintf(fp,"%d\n",pFrame->pts);
if(frameFinished) {
SDL_LockYUVOverlay(bmp);
AVPicture pict;
pict.data[0] = bmp->pixels[0];
pict.data[1] = bmp->pixels[2];
pict.data[2] = bmp->pixels[1];
pict.linesize[0] = bmp->pitches[0];
pict.linesize[1] = bmp->pitches[2];
pict.linesize[2] = bmp->pitches[1];
img_convert_ctx =
sws_getContext(pCodecCtx->width,pCodecCtx->height,pCodecCtx->pix_fmt,
pCodecCtx->width,pCodecCtx->height,PIX_FMT_YUV420P,SWS_BICUBIC, NULL, NULL,
NULL);
sws_scale(img_convert_ctx,pFrame->data,pFrame->linesize,0,pCodecCtx->height,pict.data,pict.linesize);
SDL_UnlockYUVOverlay(bmp);
rect.x = 0;
rect.y = 0;
rect.w = pCodecCtx->width;
rect.h = pCodecCtx->height;
SDL_DisplayYUVOverlay(bmp,&rect);
}
}
av_free_packet(&packet);
}
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