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Add get release decoder frame buffer functions.

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This CL changes libvpx to call a function when a frame buffer
is needed for decode. Libvpx will call a release callback when
no other frames reference the frame buffer. This CL adds a
default implementation of the frame buffer callbacks. Currently
only VP9 is supported. A future CL will add support for
applications to supply their own frame buffer callbacks.

Change-Id: I1405a320118f1cdd95f80c670d52b085a62cb10d
This commit is contained in:
Frank Galligan
2014-02-05 17:44:42 -08:00
parent 5f5c262766
commit e8e152799b
14 changed files with 323 additions and 24 deletions
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13
vp9/decoder/vp9_decodeframe.c
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@@ -691,9 +691,14 @@ static void apply_frame_size(VP9D_COMP *pbi, int width, int height) {
vp9_update_frame_size(cm);
}
vp9_realloc_frame_buffer(get_frame_new_buffer(cm), cm->width, cm->height,
cm->subsampling_x, cm->subsampling_y,
VP9_DEC_BORDER_IN_PIXELS);
if (vp9_realloc_frame_buffer(
get_frame_new_buffer(cm), cm->width, cm->height,
cm->subsampling_x, cm->subsampling_y, VP9_DEC_BORDER_IN_PIXELS,
&cm->frame_bufs[cm->new_fb_idx].raw_frame_buffer, cm->get_fb_cb,
cm->cb_priv)) {
vpx_internal_error(&cm->error, VPX_CODEC_MEM_ERROR,
"Failed to allocate frame buffer");
}
}
static void setup_frame_size(VP9D_COMP *pbi,
@@ -1114,7 +1119,7 @@ static size_t read_uncompressed_header(VP9D_COMP *pbi,
cm->show_existing_frame = vp9_rb_read_bit(rb);
if (cm->show_existing_frame) {
// Show an existing frame directly.
int frame_to_show = cm->ref_frame_map[vp9_rb_read_literal(rb, 3)];
const int frame_to_show = cm->ref_frame_map[vp9_rb_read_literal(rb, 3)];
ref_cnt_fb(cm->frame_bufs, &cm->new_fb_idx, frame_to_show);
pbi->refresh_frame_flags = 0;
cm->lf.filter_level = 0;