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Merge commit '44c9f374f188f92927b7a4aad2101289d446b814' 

* commit '44c9f374f188f92927b7a4aad2101289d446b814':
  examples/qsvdec: convert to the new decoding API

Merged-by: Clément Bœsch <u@pkh.me>
This commit is contained in:
Clément Bœsch 2017-04-03 21:10:07 +02:00
parent 4069394fd4 44c9f374f1
commit 54e195cf52
1 changed files with 25 additions and 23 deletions
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48
doc/examples/qsvdec.c
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@ -92,41 +92,43 @@ static int decode_packet(DecodeContext *decode, AVCodecContext *decoder_ctx,
AVPacket *pkt, AVIOContext *output_ctx) AVPacket *pkt, AVIOContext *output_ctx)
{ {
int ret = 0; int ret = 0;
int got_frame = 1;
while (pkt->size > 0 || (!pkt->data && got_frame)) { ret = avcodec_send_packet(decoder_ctx, pkt);
ret = avcodec_decode_video2(decoder_ctx, frame, &got_frame, pkt); if (ret < 0) {
if (ret < 0) { fprintf(stderr, "Error during decoding\n");
return ret;
}
while (ret >= 0) {
int i, j;
ret = avcodec_receive_frame(decoder_ctx, frame);
if (ret == AVERROR(EAGAIN) || ret == AVERROR_EOF)
break;
else if (ret < 0) {
fprintf(stderr, "Error during decoding\n"); fprintf(stderr, "Error during decoding\n");
return ret; return ret;
} }
pkt->data += ret;
pkt->size -= ret;
/* A real program would do something useful with the decoded frame here. /* A real program would do something useful with the decoded frame here.
* We just retrieve the raw data and write it to a file, which is rather * We just retrieve the raw data and write it to a file, which is rather
* useless but pedagogic. */ * useless but pedagogic. */
if (got_frame) { ret = av_hwframe_transfer_data(sw_frame, frame, 0);
int i, j; if (ret < 0) {
fprintf(stderr, "Error transferring the data to system memory\n");
goto fail;
}
ret = av_hwframe_transfer_data(sw_frame, frame, 0); for (i = 0; i < FF_ARRAY_ELEMS(sw_frame->data) && sw_frame->data[i]; i++)
if (ret < 0) { for (j = 0; j < (sw_frame->height >> (i > 0)); j++)
fprintf(stderr, "Error transferring the data to system memory\n"); avio_write(output_ctx, sw_frame->data[i] + j * sw_frame->linesize[i], sw_frame->width);
goto fail;
}
for (i = 0; i < FF_ARRAY_ELEMS(sw_frame->data) && sw_frame->data[i]; i++)
for (j = 0; j < (sw_frame->height >> (i > 0)); j++)
avio_write(output_ctx, sw_frame->data[i] + j * sw_frame->linesize[i], sw_frame->width);
fail: fail:
av_frame_unref(sw_frame); av_frame_unref(sw_frame);
av_frame_unref(frame); av_frame_unref(frame);
if (ret < 0) if (ret < 0)
return ret; return ret;
}
} }
return 0; return 0;