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examples/encode_video: use the AVFrame API for allocating the frame

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It is more efficient and so preferred over allocating the buffers
manually.
This commit is contained in:
Anton Khirnov
2016-10-20 11:03:20 +02:00
parent d0a603a534
commit 5b4d7ac7ae
1 changed files with 12 additions and 7 deletions
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19
doc/examples/encode_video.c
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@ -88,16 +88,16 @@ int main(int argc, char **argv)
exit(1); exit(1);
} }
ret = av_image_alloc(picture->data, picture->linesize, c->width, c->height,
c->pix_fmt, 32);
if (ret < 0) {
fprintf(stderr, "could not alloc raw picture buffer\n");
exit(1);
}
picture->format = c->pix_fmt; picture->format = c->pix_fmt;
picture->width = c->width; picture->width = c->width;
picture->height = c->height; picture->height = c->height;
ret = av_frame_get_buffer(picture, 32);
if (ret < 0) {
fprintf(stderr, "could not alloc the frame data\n");
exit(1);
}
/* encode 1 second of video */ /* encode 1 second of video */
for(i=0;i<25;i++) { for(i=0;i<25;i++) {
av_init_packet(&pkt); av_init_packet(&pkt);
@ -105,6 +105,12 @@ int main(int argc, char **argv)
pkt.size = 0; pkt.size = 0;
fflush(stdout); fflush(stdout);
/* make sure the frame data is writable */
ret = av_frame_make_writable(picture);
if (ret < 0)
exit(1);
/* prepare a dummy image */ /* prepare a dummy image */
/* Y */ /* Y */
for(y=0;y<c->height;y++) { for(y=0;y<c->height;y++) {
@ -159,7 +165,6 @@ int main(int argc, char **argv)
fclose(f); fclose(f);
avcodec_free_context(&c); avcodec_free_context(&c);
av_freep(&picture->data[0]);
av_frame_free(&picture); av_frame_free(&picture);
return 0; return 0;