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examples/encoding.c: use av_image_alloc() for allocating an image buffer

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Simplify.
This commit is contained in:
Stefano Sabatini 2011-07-08 09:52:07 +02:00
parent 2420763638
commit 2e5a9e580c
1 changed files with 6 additions and 10 deletions
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16
doc/examples/encoding.c
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@ -205,7 +205,7 @@ static void video_encode_example(const char *filename)
int i, out_size, size, x, y, outbuf_size; int i, out_size, size, x, y, outbuf_size;
FILE *f; FILE *f;
AVFrame *picture; AVFrame *picture;
uint8_t *outbuf, *picture_buf; uint8_t *outbuf;
printf("Video encoding\n"); printf("Video encoding\n");
@ -245,15 +245,11 @@ static void video_encode_example(const char *filename)
/* alloc image and output buffer */ /* alloc image and output buffer */
outbuf_size = 100000; outbuf_size = 100000;
outbuf = malloc(outbuf_size); outbuf = malloc(outbuf_size);
size = c->width * c->height;
picture_buf = malloc((size * 3) / 2); /* size for YUV 420 */
picture->data[0] = picture_buf; /* the image can be allocated by any means and av_image_alloc() is
picture->data[1] = picture->data[0] + size; * just the most convenient way if av_malloc() is to be used */
picture->data[2] = picture->data[1] + size / 4; av_image_alloc(picture->data, picture->linesize,
picture->linesize[0] = c->width; c->width, c->height, c->pix_fmt, 1);
picture->linesize[1] = c->width / 2;
picture->linesize[2] = c->width / 2;
/* encode 1 second of video */ /* encode 1 second of video */
for(i=0;i<25;i++) { for(i=0;i<25;i++) {
@ -296,11 +292,11 @@ static void video_encode_example(const char *filename)
outbuf[3] = 0xb7; outbuf[3] = 0xb7;
fwrite(outbuf, 1, 4, f); fwrite(outbuf, 1, 4, f);
fclose(f); fclose(f);
free(picture_buf);
free(outbuf); free(outbuf);
avcodec_close(c); avcodec_close(c);
av_free(c); av_free(c);
av_free(picture->data[0]);
av_free(picture); av_free(picture);
printf("\n"); printf("\n");
} }