| /* |
| * Copyright (c) 2016, Alliance for Open Media. All rights reserved |
| * |
| * This source code is subject to the terms of the BSD 2 Clause License and |
| * the Alliance for Open Media Patent License 1.0. If the BSD 2 Clause License |
| * was not distributed with this source code in the LICENSE file, you can |
| * obtain it at www.aomedia.org/license/software. If the Alliance for Open |
| * Media Patent License 1.0 was not distributed with this source code in the |
| * PATENTS file, you can obtain it at www.aomedia.org/license/patent. |
| */ |
| |
| #include <assert.h> |
| |
| #include "aom_scale/yv12config.h" |
| #include "aom_mem/aom_mem.h" |
| #include "aom_ports/mem.h" |
| |
| /**************************************************************************** |
| * Exports |
| ****************************************************************************/ |
| |
| /**************************************************************************** |
| * |
| ****************************************************************************/ |
| #define yv12_align_addr(addr, align) \ |
| (void *)(((size_t)(addr) + ((align)-1)) & (size_t) - (align)) |
| |
| int aom_yv12_de_alloc_frame_buffer(YV12_BUFFER_CONFIG *ybf) { |
| if (ybf) { |
| // If libaom is using frame buffer callbacks then buffer_alloc_sz must |
| // not be set. |
| if (ybf->buffer_alloc_sz > 0) { |
| aom_free(ybf->buffer_alloc); |
| } |
| |
| /* buffer_alloc isn't accessed by most functions. Rather y_buffer, |
| u_buffer and v_buffer point to buffer_alloc and are used. Clear out |
| all of this so that a freed pointer isn't inadvertently used */ |
| memset(ybf, 0, sizeof(YV12_BUFFER_CONFIG)); |
| } else { |
| return -1; |
| } |
| |
| return 0; |
| } |
| |
| int aom_yv12_realloc_frame_buffer(YV12_BUFFER_CONFIG *ybf, int width, |
| int height, int border) { |
| if (ybf) { |
| int aligned_width = (width + 15) & ~15; |
| int aligned_height = (height + 15) & ~15; |
| int y_stride = ((aligned_width + 2 * border) + 31) & ~31; |
| int yplane_size = (aligned_height + 2 * border) * y_stride; |
| int uv_width = aligned_width >> 1; |
| int uv_height = aligned_height >> 1; |
| /** There is currently a bunch of code which assumes |
| * uv_stride == y_stride/2, so enforce this here. */ |
| int uv_stride = y_stride >> 1; |
| int uvplane_size = (uv_height + border) * uv_stride; |
| const int frame_size = yplane_size + 2 * uvplane_size; |
| |
| if (!ybf->buffer_alloc) { |
| ybf->buffer_alloc = (uint8_t *)aom_memalign(32, frame_size); |
| ybf->buffer_alloc_sz = frame_size; |
| } |
| |
| if (!ybf->buffer_alloc || ybf->buffer_alloc_sz < frame_size) return -1; |
| |
| /* Only support allocating buffers that have a border that's a multiple |
| * of 32. The border restriction is required to get 16-byte alignment of |
| * the start of the chroma rows without introducing an arbitrary gap |
| * between planes, which would break the semantics of things like |
| * aom_img_set_rect(). */ |
| if (border & 0x1f) return -3; |
| |
| ybf->y_crop_width = width; |
| ybf->y_crop_height = height; |
| ybf->y_width = aligned_width; |
| ybf->y_height = aligned_height; |
| ybf->y_stride = y_stride; |
| |
| ybf->uv_crop_width = (width + 1) / 2; |
| ybf->uv_crop_height = (height + 1) / 2; |
| ybf->uv_width = uv_width; |
| ybf->uv_height = uv_height; |
| ybf->uv_stride = uv_stride; |
| |
| ybf->alpha_width = 0; |
| ybf->alpha_height = 0; |
| ybf->alpha_stride = 0; |
| |
| ybf->border = border; |
| ybf->frame_size = frame_size; |
| |
| ybf->y_buffer = ybf->buffer_alloc + (border * y_stride) + border; |
| ybf->u_buffer = |
| ybf->buffer_alloc + yplane_size + (border / 2 * uv_stride) + border / 2; |
| ybf->v_buffer = ybf->buffer_alloc + yplane_size + uvplane_size + |
| (border / 2 * uv_stride) + border / 2; |
| ybf->alpha_buffer = NULL; |
| |
| ybf->corrupted = 0; /* assume not currupted by errors */ |
| return 0; |
| } |
| return -2; |
| } |
| |
| int aom_yv12_alloc_frame_buffer(YV12_BUFFER_CONFIG *ybf, int width, int height, |
| int border) { |
| if (ybf) { |
| aom_yv12_de_alloc_frame_buffer(ybf); |
| return aom_yv12_realloc_frame_buffer(ybf, width, height, border); |
| } |
| return -2; |
| } |
| |
| #if CONFIG_AV1 |
| // TODO(jkoleszar): Maybe replace this with struct aom_image |
| |
| int aom_free_frame_buffer(YV12_BUFFER_CONFIG *ybf) { |
| if (ybf) { |
| if (ybf->buffer_alloc_sz > 0) { |
| aom_free(ybf->buffer_alloc); |
| } |
| |
| /* buffer_alloc isn't accessed by most functions. Rather y_buffer, |
| u_buffer and v_buffer point to buffer_alloc and are used. Clear out |
| all of this so that a freed pointer isn't inadvertently used */ |
| memset(ybf, 0, sizeof(YV12_BUFFER_CONFIG)); |
| } else { |
| return -1; |
| } |
| |
| return 0; |
| } |
| |
| int aom_realloc_frame_buffer(YV12_BUFFER_CONFIG *ybf, int width, int height, |
| int ss_x, int ss_y, |
| #if CONFIG_AOM_HIGHBITDEPTH |
| int use_highbitdepth, |
| #endif |
| int border, int byte_alignment, |
| aom_codec_frame_buffer_t *fb, |
| aom_get_frame_buffer_cb_fn_t cb, void *cb_priv) { |
| if (ybf) { |
| const int aom_byte_align = (byte_alignment == 0) ? 1 : byte_alignment; |
| const int aligned_width = (width + 7) & ~7; |
| const int aligned_height = (height + 7) & ~7; |
| const int y_stride = ((aligned_width + 2 * border) + 31) & ~31; |
| const uint64_t yplane_size = |
| (aligned_height + 2 * border) * (uint64_t)y_stride + byte_alignment; |
| const int uv_width = aligned_width >> ss_x; |
| const int uv_height = aligned_height >> ss_y; |
| const int uv_stride = y_stride >> ss_x; |
| const int uv_border_w = border >> ss_x; |
| const int uv_border_h = border >> ss_y; |
| const uint64_t uvplane_size = |
| (uv_height + 2 * uv_border_h) * (uint64_t)uv_stride + byte_alignment; |
| |
| #if CONFIG_ALPHA |
| const int alpha_width = aligned_width; |
| const int alpha_height = aligned_height; |
| const int alpha_stride = y_stride; |
| const int alpha_border_w = border; |
| const int alpha_border_h = border; |
| const uint64_t alpha_plane_size = |
| (alpha_height + 2 * alpha_border_h) * (uint64_t)alpha_stride + |
| byte_alignment; |
| #if CONFIG_AOM_HIGHBITDEPTH |
| const uint64_t frame_size = |
| (1 + use_highbitdepth) * |
| (yplane_size + 2 * uvplane_size + alpha_plane_size); |
| #else |
| const uint64_t frame_size = |
| yplane_size + 2 * uvplane_size + alpha_plane_size; |
| #endif // CONFIG_AOM_HIGHBITDEPTH |
| #else |
| #if CONFIG_AOM_HIGHBITDEPTH |
| const uint64_t frame_size = |
| (1 + use_highbitdepth) * (yplane_size + 2 * uvplane_size); |
| #else |
| const uint64_t frame_size = yplane_size + 2 * uvplane_size; |
| #endif // CONFIG_AOM_HIGHBITDEPTH |
| #endif // CONFIG_ALPHA |
| |
| uint8_t *buf = NULL; |
| |
| if (cb != NULL) { |
| const int align_addr_extra_size = 31; |
| const uint64_t external_frame_size = frame_size + align_addr_extra_size; |
| |
| assert(fb != NULL); |
| |
| if (external_frame_size != (size_t)external_frame_size) return -1; |
| |
| // Allocation to hold larger frame, or first allocation. |
| if (cb(cb_priv, (size_t)external_frame_size, fb) < 0) return -1; |
| |
| if (fb->data == NULL || fb->size < external_frame_size) return -1; |
| |
| ybf->buffer_alloc = (uint8_t *)yv12_align_addr(fb->data, 32); |
| |
| #if defined(__has_feature) |
| #if __has_feature(memory_sanitizer) |
| // This memset is needed for fixing the issue of using uninitialized |
| // value in msan test. It will cause a perf loss, so only do this for |
| // msan test. |
| memset(ybf->buffer_alloc, 0, (int)frame_size); |
| #endif |
| #endif |
| } else if (frame_size > (size_t)ybf->buffer_alloc_sz) { |
| // Allocation to hold larger frame, or first allocation. |
| aom_free(ybf->buffer_alloc); |
| ybf->buffer_alloc = NULL; |
| |
| if (frame_size != (size_t)frame_size) return -1; |
| |
| ybf->buffer_alloc = (uint8_t *)aom_memalign(32, (size_t)frame_size); |
| if (!ybf->buffer_alloc) return -1; |
| |
| ybf->buffer_alloc_sz = (int)frame_size; |
| |
| // This memset is needed for fixing valgrind error from C loop filter |
| // due to access uninitialized memory in frame border. It could be |
| // removed if border is totally removed. |
| memset(ybf->buffer_alloc, 0, ybf->buffer_alloc_sz); |
| } |
| |
| /* Only support allocating buffers that have a border that's a multiple |
| * of 32. The border restriction is required to get 16-byte alignment of |
| * the start of the chroma rows without introducing an arbitrary gap |
| * between planes, which would break the semantics of things like |
| * aom_img_set_rect(). */ |
| if (border & 0x1f) return -3; |
| |
| ybf->y_crop_width = width; |
| ybf->y_crop_height = height; |
| ybf->y_width = aligned_width; |
| ybf->y_height = aligned_height; |
| ybf->y_stride = y_stride; |
| |
| ybf->uv_crop_width = (width + ss_x) >> ss_x; |
| ybf->uv_crop_height = (height + ss_y) >> ss_y; |
| ybf->uv_width = uv_width; |
| ybf->uv_height = uv_height; |
| ybf->uv_stride = uv_stride; |
| |
| ybf->border = border; |
| ybf->frame_size = (int)frame_size; |
| ybf->subsampling_x = ss_x; |
| ybf->subsampling_y = ss_y; |
| |
| buf = ybf->buffer_alloc; |
| #if CONFIG_AOM_HIGHBITDEPTH |
| if (use_highbitdepth) { |
| // Store uint16 addresses when using 16bit framebuffers |
| buf = CONVERT_TO_BYTEPTR(ybf->buffer_alloc); |
| ybf->flags = YV12_FLAG_HIGHBITDEPTH; |
| } else { |
| ybf->flags = 0; |
| } |
| #endif // CONFIG_AOM_HIGHBITDEPTH |
| |
| ybf->y_buffer = (uint8_t *)yv12_align_addr( |
| buf + (border * y_stride) + border, aom_byte_align); |
| ybf->u_buffer = (uint8_t *)yv12_align_addr( |
| buf + yplane_size + (uv_border_h * uv_stride) + uv_border_w, |
| aom_byte_align); |
| ybf->v_buffer = |
| (uint8_t *)yv12_align_addr(buf + yplane_size + uvplane_size + |
| (uv_border_h * uv_stride) + uv_border_w, |
| aom_byte_align); |
| |
| #if CONFIG_ALPHA |
| ybf->alpha_width = alpha_width; |
| ybf->alpha_height = alpha_height; |
| ybf->alpha_stride = alpha_stride; |
| ybf->alpha_buffer = (uint8_t *)yv12_align_addr( |
| buf + yplane_size + 2 * uvplane_size + (alpha_border_h * alpha_stride) + |
| alpha_border_w, |
| aom_byte_align); |
| #endif |
| ybf->corrupted = 0; /* assume not corrupted by errors */ |
| return 0; |
| } |
| return -2; |
| } |
| |
| int aom_alloc_frame_buffer(YV12_BUFFER_CONFIG *ybf, int width, int height, |
| int ss_x, int ss_y, |
| #if CONFIG_AOM_HIGHBITDEPTH |
| int use_highbitdepth, |
| #endif |
| int border, int byte_alignment) { |
| if (ybf) { |
| aom_free_frame_buffer(ybf); |
| return aom_realloc_frame_buffer(ybf, width, height, ss_x, ss_y, |
| #if CONFIG_AOM_HIGHBITDEPTH |
| use_highbitdepth, |
| #endif |
| border, byte_alignment, NULL, NULL, NULL); |
| } |
| return -2; |
| } |
| #endif |
