1 /*
2 * Copyright (c) 2016, Alliance for Open Media. All rights reserved
3 *
4 * This source code is subject to the terms of the BSD 2 Clause License and
5 * the Alliance for Open Media Patent License 1.0. If the BSD 2 Clause License
6 * was not distributed with this source code in the LICENSE file, you can
7 * obtain it at www.aomedia.org/license/software. If the Alliance for Open
8 * Media Patent License 1.0 was not distributed with this source code in the
9 * PATENTS file, you can obtain it at www.aomedia.org/license/patent.
10 */
11
12 #include <assert.h>
13
14 #include "aom/internal/aom_image_internal.h"
15 #include "aom_mem/aom_mem.h"
16 #include "aom_ports/mem.h"
17 #include "aom_scale/yv12config.h"
18 #include "av1/common/enums.h"
19
20 /****************************************************************************
21 * Exports
22 ****************************************************************************/
23
24 /****************************************************************************
25 *
26 ****************************************************************************/
27
28 // TODO(jkoleszar): Maybe replace this with struct aom_image
aom_free_frame_buffer(YV12_BUFFER_CONFIG * ybf)29 int aom_free_frame_buffer(YV12_BUFFER_CONFIG *ybf) {
30 if (ybf) {
31 if (ybf->buffer_alloc_sz > 0) {
32 aom_free(ybf->buffer_alloc);
33 }
34 if (ybf->y_buffer_8bit) aom_free(ybf->y_buffer_8bit);
35 aom_remove_metadata_from_frame_buffer(ybf);
36 /* buffer_alloc isn't accessed by most functions. Rather y_buffer,
37 u_buffer and v_buffer point to buffer_alloc and are used. Clear out
38 all of this so that a freed pointer isn't inadvertently used */
39 memset(ybf, 0, sizeof(YV12_BUFFER_CONFIG));
40 return 0;
41 }
42
43 return AOM_CODEC_MEM_ERROR;
44 }
45
realloc_frame_buffer_aligned(YV12_BUFFER_CONFIG * ybf,int width,int height,int ss_x,int ss_y,int use_highbitdepth,int border,int byte_alignment,aom_codec_frame_buffer_t * fb,aom_get_frame_buffer_cb_fn_t cb,void * cb_priv,const int y_stride,const uint64_t yplane_size,const uint64_t uvplane_size,const int aligned_width,const int aligned_height,const int uv_width,const int uv_height,const int uv_stride,const int uv_border_w,const int uv_border_h)46 static int realloc_frame_buffer_aligned(
47 YV12_BUFFER_CONFIG *ybf, int width, int height, int ss_x, int ss_y,
48 int use_highbitdepth, int border, int byte_alignment,
49 aom_codec_frame_buffer_t *fb, aom_get_frame_buffer_cb_fn_t cb,
50 void *cb_priv, const int y_stride, const uint64_t yplane_size,
51 const uint64_t uvplane_size, const int aligned_width,
52 const int aligned_height, const int uv_width, const int uv_height,
53 const int uv_stride, const int uv_border_w, const int uv_border_h) {
54 if (ybf) {
55 const int aom_byte_align = (byte_alignment == 0) ? 1 : byte_alignment;
56 const uint64_t frame_size =
57 (1 + use_highbitdepth) * (yplane_size + 2 * uvplane_size);
58
59 uint8_t *buf = NULL;
60
61 #if defined AOM_MAX_ALLOCABLE_MEMORY
62 // The size of ybf->buffer_alloc.
63 uint64_t alloc_size = frame_size;
64 // The size of ybf->y_buffer_8bit.
65 if (use_highbitdepth) alloc_size += yplane_size;
66 // The decoder may allocate REF_FRAMES frame buffers in the frame buffer
67 // pool. Bound the total amount of allocated memory as if these REF_FRAMES
68 // frame buffers were allocated in a single allocation.
69 if (alloc_size > AOM_MAX_ALLOCABLE_MEMORY / REF_FRAMES)
70 return AOM_CODEC_MEM_ERROR;
71 #endif
72
73 if (cb != NULL) {
74 const int align_addr_extra_size = 31;
75 const uint64_t external_frame_size = frame_size + align_addr_extra_size;
76
77 assert(fb != NULL);
78
79 if (external_frame_size != (size_t)external_frame_size)
80 return AOM_CODEC_MEM_ERROR;
81
82 // Allocation to hold larger frame, or first allocation.
83 if (cb(cb_priv, (size_t)external_frame_size, fb) < 0)
84 return AOM_CODEC_MEM_ERROR;
85
86 if (fb->data == NULL || fb->size < external_frame_size)
87 return AOM_CODEC_MEM_ERROR;
88
89 ybf->buffer_alloc = (uint8_t *)aom_align_addr(fb->data, 32);
90
91 #if defined(__has_feature)
92 #if __has_feature(memory_sanitizer)
93 // This memset is needed for fixing the issue of using uninitialized
94 // value in msan test. It will cause a perf loss, so only do this for
95 // msan test.
96 memset(ybf->buffer_alloc, 0, (size_t)frame_size);
97 #endif
98 #endif
99 } else if (frame_size > ybf->buffer_alloc_sz) {
100 // Allocation to hold larger frame, or first allocation.
101 aom_free(ybf->buffer_alloc);
102 ybf->buffer_alloc = NULL;
103 ybf->buffer_alloc_sz = 0;
104
105 if (frame_size != (size_t)frame_size) return AOM_CODEC_MEM_ERROR;
106
107 ybf->buffer_alloc = (uint8_t *)aom_memalign(32, (size_t)frame_size);
108 if (!ybf->buffer_alloc) return AOM_CODEC_MEM_ERROR;
109
110 ybf->buffer_alloc_sz = (size_t)frame_size;
111
112 // This memset is needed for fixing valgrind error from C loop filter
113 // due to access uninitialized memory in frame border. It could be
114 // removed if border is totally removed.
115 memset(ybf->buffer_alloc, 0, ybf->buffer_alloc_sz);
116 }
117
118 ybf->y_crop_width = width;
119 ybf->y_crop_height = height;
120 ybf->y_width = aligned_width;
121 ybf->y_height = aligned_height;
122 ybf->y_stride = y_stride;
123
124 ybf->uv_crop_width = (width + ss_x) >> ss_x;
125 ybf->uv_crop_height = (height + ss_y) >> ss_y;
126 ybf->uv_width = uv_width;
127 ybf->uv_height = uv_height;
128 ybf->uv_stride = uv_stride;
129
130 ybf->border = border;
131 ybf->frame_size = (size_t)frame_size;
132 ybf->subsampling_x = ss_x;
133 ybf->subsampling_y = ss_y;
134
135 buf = ybf->buffer_alloc;
136 if (use_highbitdepth) {
137 // Store uint16 addresses when using 16bit framebuffers
138 buf = CONVERT_TO_BYTEPTR(ybf->buffer_alloc);
139 ybf->flags = YV12_FLAG_HIGHBITDEPTH;
140 } else {
141 ybf->flags = 0;
142 }
143
144 ybf->y_buffer = (uint8_t *)aom_align_addr(
145 buf + (border * y_stride) + border, aom_byte_align);
146 ybf->u_buffer = (uint8_t *)aom_align_addr(
147 buf + yplane_size + (uv_border_h * uv_stride) + uv_border_w,
148 aom_byte_align);
149 ybf->v_buffer =
150 (uint8_t *)aom_align_addr(buf + yplane_size + uvplane_size +
151 (uv_border_h * uv_stride) + uv_border_w,
152 aom_byte_align);
153
154 ybf->use_external_reference_buffers = 0;
155
156 if (use_highbitdepth) {
157 if (ybf->y_buffer_8bit) aom_free(ybf->y_buffer_8bit);
158 ybf->y_buffer_8bit = (uint8_t *)aom_memalign(32, (size_t)yplane_size);
159 if (!ybf->y_buffer_8bit) return AOM_CODEC_MEM_ERROR;
160 } else {
161 if (ybf->y_buffer_8bit) {
162 aom_free(ybf->y_buffer_8bit);
163 ybf->y_buffer_8bit = NULL;
164 ybf->buf_8bit_valid = 0;
165 }
166 }
167
168 ybf->corrupted = 0; /* assume not corrupted by errors */
169 return 0;
170 }
171 return AOM_CODEC_MEM_ERROR;
172 }
173
calc_stride_and_planesize(const int ss_x,const int ss_y,const int aligned_width,const int aligned_height,const int border,const int byte_alignment,int * y_stride,int * uv_stride,uint64_t * yplane_size,uint64_t * uvplane_size,const int uv_height)174 static int calc_stride_and_planesize(const int ss_x, const int ss_y,
175 const int aligned_width,
176 const int aligned_height, const int border,
177 const int byte_alignment, int *y_stride,
178 int *uv_stride, uint64_t *yplane_size,
179 uint64_t *uvplane_size,
180 const int uv_height) {
181 /* Only support allocating buffers that have a border that's a multiple
182 * of 32. The border restriction is required to get 16-byte alignment of
183 * the start of the chroma rows without introducing an arbitrary gap
184 * between planes, which would break the semantics of things like
185 * aom_img_set_rect(). */
186 if (border & 0x1f) return AOM_CODEC_MEM_ERROR;
187 *y_stride = ((aligned_width + 2 * border) + 31) & ~31;
188 *yplane_size =
189 (aligned_height + 2 * border) * (uint64_t)(*y_stride) + byte_alignment;
190
191 *uv_stride = *y_stride >> ss_x;
192 *uvplane_size = (uv_height + 2 * (border >> ss_y)) * (uint64_t)(*uv_stride) +
193 byte_alignment;
194 return 0;
195 }
196
aom_realloc_frame_buffer(YV12_BUFFER_CONFIG * ybf,int width,int height,int ss_x,int ss_y,int use_highbitdepth,int border,int byte_alignment,aom_codec_frame_buffer_t * fb,aom_get_frame_buffer_cb_fn_t cb,void * cb_priv)197 int aom_realloc_frame_buffer(YV12_BUFFER_CONFIG *ybf, int width, int height,
198 int ss_x, int ss_y, int use_highbitdepth,
199 int border, int byte_alignment,
200 aom_codec_frame_buffer_t *fb,
201 aom_get_frame_buffer_cb_fn_t cb, void *cb_priv) {
202 #if CONFIG_SIZE_LIMIT
203 if (width > DECODE_WIDTH_LIMIT || height > DECODE_HEIGHT_LIMIT)
204 return AOM_CODEC_MEM_ERROR;
205 #endif
206
207 if (ybf) {
208 int y_stride = 0;
209 int uv_stride = 0;
210 uint64_t yplane_size = 0;
211 uint64_t uvplane_size = 0;
212 const int aligned_width = (width + 7) & ~7;
213 const int aligned_height = (height + 7) & ~7;
214 const int uv_width = aligned_width >> ss_x;
215 const int uv_height = aligned_height >> ss_y;
216 const int uv_border_w = border >> ss_x;
217 const int uv_border_h = border >> ss_y;
218
219 int error = calc_stride_and_planesize(
220 ss_x, ss_y, aligned_width, aligned_height, border, byte_alignment,
221 &y_stride, &uv_stride, &yplane_size, &uvplane_size, uv_height);
222 if (error) return error;
223 return realloc_frame_buffer_aligned(
224 ybf, width, height, ss_x, ss_y, use_highbitdepth, border,
225 byte_alignment, fb, cb, cb_priv, y_stride, yplane_size, uvplane_size,
226 aligned_width, aligned_height, uv_width, uv_height, uv_stride,
227 uv_border_w, uv_border_h);
228 }
229 return AOM_CODEC_MEM_ERROR;
230 }
231
aom_alloc_frame_buffer(YV12_BUFFER_CONFIG * ybf,int width,int height,int ss_x,int ss_y,int use_highbitdepth,int border,int byte_alignment)232 int aom_alloc_frame_buffer(YV12_BUFFER_CONFIG *ybf, int width, int height,
233 int ss_x, int ss_y, int use_highbitdepth, int border,
234 int byte_alignment) {
235 if (ybf) {
236 aom_free_frame_buffer(ybf);
237 return aom_realloc_frame_buffer(ybf, width, height, ss_x, ss_y,
238 use_highbitdepth, border, byte_alignment,
239 NULL, NULL, NULL);
240 }
241 return AOM_CODEC_MEM_ERROR;
242 }
243
aom_remove_metadata_from_frame_buffer(YV12_BUFFER_CONFIG * ybf)244 void aom_remove_metadata_from_frame_buffer(YV12_BUFFER_CONFIG *ybf) {
245 if (ybf && ybf->metadata) {
246 aom_img_metadata_array_free(ybf->metadata);
247 ybf->metadata = NULL;
248 }
249 }
250
aom_copy_metadata_to_frame_buffer(YV12_BUFFER_CONFIG * ybf,const aom_metadata_array_t * arr)251 int aom_copy_metadata_to_frame_buffer(YV12_BUFFER_CONFIG *ybf,
252 const aom_metadata_array_t *arr) {
253 if (!ybf || !arr || !arr->metadata_array) return -1;
254 aom_remove_metadata_from_frame_buffer(ybf);
255 ybf->metadata = aom_img_metadata_array_alloc(arr->sz);
256 if (!ybf->metadata) return -1;
257 for (size_t i = 0; i < ybf->metadata->sz; i++) {
258 ybf->metadata->metadata_array[i] = aom_img_metadata_alloc(
259 arr->metadata_array[i]->type, arr->metadata_array[i]->payload,
260 arr->metadata_array[i]->sz, arr->metadata_array[i]->insert_flag);
261 if (ybf->metadata->metadata_array[i] == NULL) {
262 aom_img_metadata_array_free(ybf->metadata);
263 ybf->metadata = NULL;
264 return -1;
265 }
266 }
267 ybf->metadata->sz = arr->sz;
268 return 0;
269 }
270