diff options
Diffstat (limited to 'media/libaom/src/aom_scale/generic/yv12config.c')
| -rw-r--r-- | media/libaom/src/aom_scale/generic/yv12config.c | 203 |
1 files changed, 203 insertions, 0 deletions
diff --git a/media/libaom/src/aom_scale/generic/yv12config.c b/media/libaom/src/aom_scale/generic/yv12config.c new file mode 100644 index 000000000..84705e2d8 --- /dev/null +++ b/media/libaom/src/aom_scale/generic/yv12config.c @@ -0,0 +1,203 @@ +/* + * 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_mem/aom_mem.h" +#include "aom_ports/mem.h" +#include "aom_scale/yv12config.h" +#include "av1/common/enums.h" + +/**************************************************************************** + * Exports + ****************************************************************************/ + +/**************************************************************************** + * + ****************************************************************************/ +#define yv12_align_addr(addr, align) \ + (void *)(((size_t)(addr) + ((align)-1)) & (size_t) - (align)) + +// 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); + } + if (ybf->y_buffer_8bit) aom_free(ybf->y_buffer_8bit); + + /* 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, 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) { +#if CONFIG_SIZE_LIMIT + if (width > DECODE_WIDTH_LIMIT || height > DECODE_HEIGHT_LIMIT) return -1; +#endif + + 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; + + const uint64_t frame_size = + (1 + use_highbitdepth) * (yplane_size + 2 * uvplane_size); + + uint8_t *buf = NULL; + +#if defined AOM_MAX_ALLOCABLE_MEMORY + // The size of ybf->buffer_alloc. + uint64_t alloc_size = frame_size; + // The size of ybf->y_buffer_8bit. + if (use_highbitdepth) alloc_size += yplane_size; + // The decoder may allocate REF_FRAMES frame buffers in the frame buffer + // pool. Bound the total amount of allocated memory as if these REF_FRAMES + // frame buffers were allocated in a single allocation. + if (alloc_size > AOM_MAX_ALLOCABLE_MEMORY / REF_FRAMES) return -1; +#endif + + 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, (size_t)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 = (size_t)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 = (size_t)frame_size; + ybf->subsampling_x = ss_x; + ybf->subsampling_y = ss_y; + + buf = ybf->buffer_alloc; + 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; + } + + 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); + + ybf->use_external_reference_buffers = 0; + + if (use_highbitdepth) { + if (ybf->y_buffer_8bit) aom_free(ybf->y_buffer_8bit); + ybf->y_buffer_8bit = (uint8_t *)aom_memalign(32, (size_t)yplane_size); + if (!ybf->y_buffer_8bit) return -1; + } else { + if (ybf->y_buffer_8bit) { + aom_free(ybf->y_buffer_8bit); + ybf->y_buffer_8bit = NULL; + ybf->buf_8bit_valid = 0; + } + } + + 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, int use_highbitdepth, int border, + int byte_alignment) { + if (ybf) { + aom_free_frame_buffer(ybf); + return aom_realloc_frame_buffer(ybf, width, height, ss_x, ss_y, + use_highbitdepth, border, byte_alignment, + NULL, NULL, NULL); + } + return -2; +} |