2 * Copyright (c) 2014 The WebM project authors. All Rights Reserved.
4 * Use of this source code is governed by a BSD-style license
5 * that can be found in the LICENSE file in the root of the source
6 * tree. An additional intellectual property rights grant can be found
7 * in the file PATENTS. All contributing project authors may
8 * be found in the AUTHORS file in the root of the source tree.
13 #include "vp9/common/vp9_frame_buffers.h"
14 #include "vpx_mem/vpx_mem.h"
16 int vp9_alloc_internal_frame_buffers(InternalFrameBufferList *list) {
18 vp9_free_internal_frame_buffers(list);
20 list->num_internal_frame_buffers =
21 VP9_MAXIMUM_REF_BUFFERS + VPX_MAXIMUM_WORK_BUFFERS;
22 list->int_fb = vpx_calloc(list->num_internal_frame_buffers,
23 sizeof(*list->int_fb));
24 return (list->int_fb == NULL);
27 void vp9_free_internal_frame_buffers(InternalFrameBufferList *list) {
32 for (i = 0; i < list->num_internal_frame_buffers; ++i) {
33 vpx_free(list->int_fb[i].data);
34 list->int_fb[i].data = NULL;
36 vpx_free(list->int_fb);
40 int vp9_get_frame_buffer(void *cb_priv, size_t min_size,
41 vpx_codec_frame_buffer_t *fb) {
43 InternalFrameBufferList *const int_fb_list =
44 (InternalFrameBufferList *)cb_priv;
45 if (int_fb_list == NULL)
48 // Find a free frame buffer.
49 for (i = 0; i < int_fb_list->num_internal_frame_buffers; ++i) {
50 if (!int_fb_list->int_fb[i].in_use)
54 if (i == int_fb_list->num_internal_frame_buffers)
57 if (int_fb_list->int_fb[i].size < min_size) {
58 int_fb_list->int_fb[i].data =
59 (uint8_t *)vpx_realloc(int_fb_list->int_fb[i].data, min_size);
60 if (!int_fb_list->int_fb[i].data)
63 int_fb_list->int_fb[i].size = min_size;
66 fb->data = int_fb_list->int_fb[i].data;
67 fb->size = int_fb_list->int_fb[i].size;
68 int_fb_list->int_fb[i].in_use = 1;
70 // Set the frame buffer's private data to point at the internal frame buffer.
71 fb->priv = &int_fb_list->int_fb[i];
75 int vp9_release_frame_buffer(void *cb_priv, vpx_codec_frame_buffer_t *fb) {
76 InternalFrameBuffer *const int_fb = (InternalFrameBuffer *)fb->priv;