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avutil: make AVFrameSideData buffers ref-counted. 

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
This commit is contained in:
Ronald S. Bultje 2015-03-23 11:11:19 -04:00 committed by Michael Niedermayer
parent b8e36690e8
commit 589a6042ea
2 changed files with 39 additions and 15 deletions
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53
libavutil/frame.c
View File

@ -115,7 +115,7 @@ static void free_side_data(AVFrameSideData **ptr_sd)
{
AVFrameSideData *sd = *ptr_sd;
av_freep(&sd->data);
av_buffer_unref(&sd->buf);
av_dict_free(&sd->metadata);
av_freep(ptr_sd);
}
@ -275,7 +275,7 @@ int av_frame_get_buffer(AVFrame *frame, int align)
return AVERROR(EINVAL);
}
int av_frame_copy_props(AVFrame *dst, const AVFrame *src)
static int frame_copy_props(AVFrame *dst, const AVFrame *src, int force_copy)
{
int i;
@ -320,13 +320,28 @@ int av_frame_copy_props(AVFrame *dst, const AVFrame *src)
if ( sd_src->type == AV_FRAME_DATA_PANSCAN
&& (src->width != dst->width || src->height != dst->height))
continue;
sd_dst = av_frame_new_side_data(dst, sd_src->type,
sd_src->size);
if (!sd_dst) {
wipe_side_data(dst);
return AVERROR(ENOMEM);
if (force_copy) {
sd_dst = av_frame_new_side_data(dst, sd_src->type,
sd_src->size);
if (!sd_dst) {
wipe_side_data(dst);
return AVERROR(ENOMEM);
}
memcpy(sd_dst->data, sd_src->data, sd_src->size);
} else {
sd_dst = av_frame_new_side_data(dst, sd_src->type, 0);
if (!sd_dst) {
wipe_side_data(dst);
return AVERROR(ENOMEM);
}
sd_dst->buf = av_buffer_ref(sd_src->buf);
if (!sd_dst->buf) {
wipe_side_data(dst);
return AVERROR(ENOMEM);
}
sd_dst->data = sd_dst->buf->data;
sd_dst->size = sd_dst->buf->size;
}
memcpy(sd_dst->data, sd_src->data, sd_src->size);
av_dict_copy(&sd_dst->metadata, sd_src->metadata, 0);
}
@ -356,7 +371,7 @@ int av_frame_ref(AVFrame *dst, const AVFrame *src)
dst->channel_layout = src->channel_layout;
dst->nb_samples = src->nb_samples;
ret = av_frame_copy_props(dst, src);
ret = frame_copy_props(dst, src, 0);
if (ret < 0)
return ret;
@ -530,6 +545,11 @@ int av_frame_make_writable(AVFrame *frame)
return 0;
}
int av_frame_copy_props(AVFrame *dst, const AVFrame *src)
{
return frame_copy_props(dst, src, 1);
}
AVBufferRef *av_frame_get_plane_buffer(AVFrame *frame, int plane)
{
uint8_t *data;
@ -580,13 +600,16 @@ AVFrameSideData *av_frame_new_side_data(AVFrame *frame,
if (!ret)
return NULL;
ret->data = av_malloc(size);
if (!ret->data) {
av_freep(&ret);
return NULL;
}
if (size > 0) {
ret->buf = av_buffer_alloc(size);
if (!ret->buf) {
av_freep(&ret);
return NULL;
}
ret->size = size;
ret->data = ret->buf->data;
ret->size = size;
}
ret->type = type;
frame->side_data[frame->nb_side_data++] = ret;

1
libavutil/frame.h
View File

@ -136,6 +136,7 @@ typedef struct AVFrameSideData {
uint8_t *data;
int size;
AVDictionary *metadata;
AVBufferRef *buf;
} AVFrameSideData;
/**