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examples/decode_video: switch to the new decoding API

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This commit is contained in:
Anton Khirnov 2016-10-19 21:56:22 +02:00
parent f78d360bba
commit 728ea23cce
1 changed files with 22 additions and 19 deletions
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41
doc/examples/decode_video.c
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@ -54,26 +54,31 @@ static void decode(AVCodecContext *dec_ctx, AVFrame *frame, AVPacket *pkt,
const char *filename) const char *filename)
{ {
char buf[1024]; char buf[1024];
int ret, got_picture; int ret;
while (pkt->size > 0) { ret = avcodec_send_packet(dec_ctx, pkt);
ret = avcodec_decode_video2(dec_ctx, frame, &got_picture, pkt); if (ret < 0) {
if (ret < 0) { fprintf(stderr, "Error sending a packet for decoding\n");
fprintf(stderr, "Error while decoding frame %d\n", dec_ctx->frame_number); exit(1);
}
while (ret >= 0) {
ret = avcodec_receive_frame(dec_ctx, frame);
if (ret == AVERROR(EAGAIN) || ret == AVERROR_EOF)
return;
else if (ret < 0) {
fprintf(stderr, "Error during decoding\n");
exit(1); exit(1);
} }
if (got_picture) {
printf("saving frame %3d\n", dec_ctx->frame_number);
fflush(stdout);
/* the picture is allocated by the decoder. no need to printf("saving frame %3d\n", dec_ctx->frame_number);
free it */ fflush(stdout);
snprintf(buf, sizeof(buf), filename, dec_ctx->frame_number);
pgm_save(frame->data[0], frame->linesize[0], /* the picture is allocated by the decoder. no need to
frame->width, frame->height, buf); free it */
} snprintf(buf, sizeof(buf), filename, dec_ctx->frame_number);
pkt->size -= ret; pgm_save(frame->data[0], frame->linesize[0],
pkt->data += ret; frame->width, frame->height, buf);
} }
} }
@ -161,9 +166,7 @@ int main(int argc, char **argv)
} }
/* flush the decoder */ /* flush the decoder */
avpkt.data = NULL; decode(c, picture, NULL, outfilename);
avpkt.size = 0;
decode(c, picture, &avpkt, outfilename);
fclose(f); fclose(f);