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Code Issues Releases Activity

output example: use the new AVFrame API for allocating the video frame

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This commit is contained in:
Anton Khirnov 2014-06-16 13:20:51 +02:00
parent 3f4edf0125
commit 38d044429d
1 changed files with 23 additions and 16 deletions
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39
doc/examples/output.c
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@ -234,20 +234,23 @@ static AVStream *add_video_stream(AVFormatContext *oc, enum AVCodecID codec_id)
static AVFrame *alloc_picture(enum AVPixelFormat pix_fmt, int width, int height)
{
AVFrame *picture;
uint8_t *picture_buf;
int size;
int ret;
picture = av_frame_alloc();
if (!picture)
return NULL;
size = avpicture_get_size(pix_fmt, width, height);
picture_buf = av_malloc(size);
if (!picture_buf) {
av_free(picture);
return NULL;
picture->format = pix_fmt;
picture->width = width;
picture->height = height;
/* allocate the buffers for the frame data */
ret = av_frame_get_buffer(picture, 32);
if (ret < 0) {
fprintf(stderr, "Could not allocate frame data.\n");
exit(1);
}
avpicture_fill((AVPicture *)picture, picture_buf,
pix_fmt, width, height);
return picture;
}
@ -287,7 +290,15 @@ static void open_video(AVFormatContext *oc, AVStream *st)
static void fill_yuv_image(AVFrame *pict, int frame_index,
int width, int height)
{
int x, y, i;
int x, y, i, ret;
/* when we pass a frame to the encoder, it may keep a reference to it
* internally;
* make sure we do not overwrite it here
*/
ret = av_frame_make_writable(pict);
if (ret < 0)
exit(1);
i = frame_index;
@ -381,12 +392,8 @@ static void write_video_frame(AVFormatContext *oc, AVStream *st)
static void close_video(AVFormatContext *oc, AVStream *st)
{
avcodec_close(st->codec);
av_free(picture->data[0]);
av_free(picture);
if (tmp_picture) {
av_free(tmp_picture->data[0]);
av_free(tmp_picture);
}
av_frame_free(&picture);
av_frame_free(&tmp_picture);
}
/**************************************************************/