From 68569dee1416593955c1570d638b3d9250b33012 Mon Sep 17 00:00:00 2001 From: trav90 Date: Mon, 15 Oct 2018 21:45:30 -0500 Subject: Import aom library This is the reference implementation for the Alliance for Open Media's av1 video code. The commit used was 4d668d7feb1f8abd809d1bca0418570a7f142a36. --- third_party/aom/aom_scale/generic/yv12config.c | 199 +++++++++++++++++++++++++ 1 file changed, 199 insertions(+) create mode 100644 third_party/aom/aom_scale/generic/yv12config.c (limited to 'third_party/aom/aom_scale/generic/yv12config.c') diff --git a/third_party/aom/aom_scale/generic/yv12config.c b/third_party/aom/aom_scale/generic/yv12config.c new file mode 100644 index 000000000..ee15ae103 --- /dev/null +++ b/third_party/aom/aom_scale/generic/yv12config.c @@ -0,0 +1,199 @@ +/* + * 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 + +#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)) + +#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); + } + +#if CONFIG_HIGHBITDEPTH && CONFIG_GLOBAL_MOTION + if (ybf->y_buffer_8bit) free(ybf->y_buffer_8bit); +#endif + + /* 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_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_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_HIGHBITDEPTH + + 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 = (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 CONFIG_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_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_HIGHBITDEPTH && CONFIG_GLOBAL_MOTION + if (ybf->y_buffer_8bit) { + free(ybf->y_buffer_8bit); + ybf->y_buffer_8bit = NULL; + } +#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_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_HIGHBITDEPTH + use_highbitdepth, +#endif + border, byte_alignment, NULL, NULL, NULL); + } + return -2; +} +#endif -- cgit v1.2.3