318 lines
11 KiB
C
318 lines
11 KiB
C
/*
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* Copyright (c) 2010 The WebM project authors. All Rights Reserved.
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*
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* Use of this source code is governed by a BSD-style license
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* that can be found in the LICENSE file in the root of the source
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* tree. An additional intellectual property rights grant can be found
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* in the file PATENTS. All contributing project authors may
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* be found in the AUTHORS file in the root of the source tree.
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*/
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#include <assert.h>
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#include "vpx_scale/yv12config.h"
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#include "vpx_mem/vpx_mem.h"
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#include "vpx_ports/mem.h"
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/****************************************************************************
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* Exports
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****************************************************************************/
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/****************************************************************************
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*
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****************************************************************************/
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#define yv12_align_addr(addr, align) \
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(void*)(((size_t)(addr) + ((align) - 1)) & (size_t)-(align))
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int
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vp8_yv12_de_alloc_frame_buffer(YV12_BUFFER_CONFIG *ybf) {
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if (ybf) {
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// If libvpx is using frame buffer callbacks then buffer_alloc_sz must
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// not be set.
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if (ybf->buffer_alloc_sz > 0) {
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vpx_free(ybf->buffer_alloc);
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}
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/* buffer_alloc isn't accessed by most functions. Rather y_buffer,
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u_buffer and v_buffer point to buffer_alloc and are used. Clear out
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all of this so that a freed pointer isn't inadvertently used */
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memset(ybf, 0, sizeof(YV12_BUFFER_CONFIG));
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} else {
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return -1;
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}
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return 0;
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}
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int vp8_yv12_realloc_frame_buffer(YV12_BUFFER_CONFIG *ybf,
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int width, int height, int border) {
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if (ybf) {
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int aligned_width = (width + 15) & ~15;
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int aligned_height = (height + 15) & ~15;
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int y_stride = ((aligned_width + 2 * border) + 31) & ~31;
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int yplane_size = (aligned_height + 2 * border) * y_stride;
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int uv_width = aligned_width >> 1;
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int uv_height = aligned_height >> 1;
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/** There is currently a bunch of code which assumes
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* uv_stride == y_stride/2, so enforce this here. */
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int uv_stride = y_stride >> 1;
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int uvplane_size = (uv_height + border) * uv_stride;
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const int frame_size = yplane_size + 2 * uvplane_size;
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if (!ybf->buffer_alloc) {
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ybf->buffer_alloc = (uint8_t *)vpx_memalign(32, frame_size);
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ybf->buffer_alloc_sz = frame_size;
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}
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if (!ybf->buffer_alloc || ybf->buffer_alloc_sz < frame_size)
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return -1;
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/* Only support allocating buffers that have a border that's a multiple
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* of 32. The border restriction is required to get 16-byte alignment of
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* the start of the chroma rows without introducing an arbitrary gap
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* between planes, which would break the semantics of things like
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* vpx_img_set_rect(). */
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if (border & 0x1f)
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return -3;
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ybf->y_crop_width = width;
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ybf->y_crop_height = height;
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ybf->y_width = aligned_width;
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ybf->y_height = aligned_height;
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ybf->y_stride = y_stride;
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ybf->uv_crop_width = (width + 1) / 2;
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ybf->uv_crop_height = (height + 1) / 2;
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ybf->uv_width = uv_width;
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ybf->uv_height = uv_height;
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ybf->uv_stride = uv_stride;
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ybf->alpha_width = 0;
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ybf->alpha_height = 0;
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ybf->alpha_stride = 0;
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ybf->border = border;
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ybf->frame_size = frame_size;
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ybf->y_buffer = ybf->buffer_alloc + (border * y_stride) + border;
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ybf->u_buffer = ybf->buffer_alloc + yplane_size + (border / 2 * uv_stride) + border / 2;
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ybf->v_buffer = ybf->buffer_alloc + yplane_size + uvplane_size + (border / 2 * uv_stride) + border / 2;
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ybf->alpha_buffer = NULL;
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ybf->corrupted = 0; /* assume not currupted by errors */
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return 0;
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}
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return -2;
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}
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int vp8_yv12_alloc_frame_buffer(YV12_BUFFER_CONFIG *ybf,
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int width, int height, int border) {
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if (ybf) {
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vp8_yv12_de_alloc_frame_buffer(ybf);
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return vp8_yv12_realloc_frame_buffer(ybf, width, height, border);
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}
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return -2;
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}
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#if CONFIG_VP9 || CONFIG_VP10
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// TODO(jkoleszar): Maybe replace this with struct vpx_image
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int vpx_free_frame_buffer(YV12_BUFFER_CONFIG *ybf) {
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if (ybf) {
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if (ybf->buffer_alloc_sz > 0) {
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vpx_free(ybf->buffer_alloc);
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}
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/* buffer_alloc isn't accessed by most functions. Rather y_buffer,
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u_buffer and v_buffer point to buffer_alloc and are used. Clear out
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all of this so that a freed pointer isn't inadvertently used */
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memset(ybf, 0, sizeof(YV12_BUFFER_CONFIG));
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} else {
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return -1;
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}
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return 0;
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}
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int vpx_realloc_frame_buffer(YV12_BUFFER_CONFIG *ybf,
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int width, int height,
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int ss_x, int ss_y,
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#if CONFIG_VP9_HIGHBITDEPTH
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int use_highbitdepth,
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#endif
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int border,
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int byte_alignment,
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vpx_codec_frame_buffer_t *fb,
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vpx_get_frame_buffer_cb_fn_t cb,
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void *cb_priv) {
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if (ybf) {
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const int vp9_byte_align = (byte_alignment == 0) ? 1 : byte_alignment;
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const int aligned_width = (width + 7) & ~7;
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const int aligned_height = (height + 7) & ~7;
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const int y_stride = ((aligned_width + 2 * border) + 31) & ~31;
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const uint64_t yplane_size = (aligned_height + 2 * border) *
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(uint64_t)y_stride + byte_alignment;
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const int uv_width = aligned_width >> ss_x;
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const int uv_height = aligned_height >> ss_y;
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const int uv_stride = y_stride >> ss_x;
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const int uv_border_w = border >> ss_x;
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const int uv_border_h = border >> ss_y;
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const uint64_t uvplane_size = (uv_height + 2 * uv_border_h) *
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(uint64_t)uv_stride + byte_alignment;
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#if CONFIG_VP9_HIGHBITDEPTH
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const uint64_t frame_size =
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(1 + use_highbitdepth) * (yplane_size + 2 * uvplane_size);
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#else
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const uint64_t frame_size = yplane_size + 2 * uvplane_size;
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#endif // CONFIG_VP9_HIGHBITDEPTH
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uint8_t *buf = NULL;
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if (cb != NULL) {
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const int align_addr_extra_size = 31;
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const uint64_t external_frame_size = frame_size + align_addr_extra_size;
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assert(fb != NULL);
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if (external_frame_size != (size_t)external_frame_size)
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return -1;
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fb->type = VPX_CODEC_FRAME_BUFFER_TYPE_SIZE;
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if (ybf->subsampling_y) {
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fb->fmt = ybf->subsampling_x ? VPX_IMG_FMT_I420 : VPX_IMG_FMT_I440;
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} else {
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fb->fmt = ybf->subsampling_x ? VPX_IMG_FMT_I422 : VPX_IMG_FMT_I444;
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}
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fb->width = aligned_width + border * 2;
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fb->height = aligned_height + border * 2;
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// Allocation to hold larger frame, or first allocation.
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if (cb(cb_priv, (size_t)external_frame_size, fb) < 0)
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return -1;
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if (fb->type == VPX_CODEC_FRAME_BUFFER_TYPE_SIZE) {
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if (fb->data == NULL || fb->size < external_frame_size)
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return -1;
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ybf->buffer_alloc = (uint8_t *)yv12_align_addr(fb->data, 32);
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#if defined(__has_feature)
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#if __has_feature(memory_sanitizer)
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// This memset is needed for fixing the issue of using uninitialized
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// value in msan test. It will cause a perf loss, so only do this for
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// msan test.
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memset(ybf->buffer_alloc, 0, (int)frame_size);
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#endif
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#endif
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} else { // VPX_CODEC_FRAME_BUFFER_TYPE_PLANES
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if (fb->plane[0] == NULL || fb->plane[1] == NULL ||
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fb->plane[2] == NULL || !fb->stride[0] || !fb->stride[1] ||
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!fb->stride[2])
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return -1;
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// buffers should be 32 bytes aligned.
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if ((fb->stride[0] & 0x1f) || (fb->stride[1] & 0x1f))
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return -3;
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if (fb->stride[1] != fb->stride[2])
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return -3;
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ybf->y_stride = fb->stride[0];
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ybf->uv_stride = fb->stride[1];
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ybf->y_buffer = fb->plane[0];
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ybf->u_buffer = fb->plane[1];
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ybf->v_buffer = fb->plane[2];
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}
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} else if (frame_size > (size_t)ybf->buffer_alloc_sz) {
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// Allocation to hold larger frame, or first allocation.
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vpx_free(ybf->buffer_alloc);
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ybf->buffer_alloc = NULL;
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if (frame_size != (size_t)frame_size)
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return -1;
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ybf->buffer_alloc = (uint8_t *)vpx_memalign(32, (size_t)frame_size);
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if (!ybf->buffer_alloc)
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return -1;
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ybf->buffer_alloc_sz = (int)frame_size;
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// This memset is needed for fixing valgrind error from C loop filter
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// due to access uninitialized memory in frame border. It could be
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// removed if border is totally removed.
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memset(ybf->buffer_alloc, 0, ybf->buffer_alloc_sz);
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}
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/* Only support allocating buffers that have a border that's a multiple
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* of 32. The border restriction is required to get 16-byte alignment of
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* the start of the chroma rows without introducing an arbitrary gap
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* between planes, which would break the semantics of things like
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* vpx_img_set_rect(). */
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if (border & 0x1f)
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return -3;
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ybf->y_crop_width = width;
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ybf->y_crop_height = height;
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ybf->y_width = aligned_width;
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ybf->y_height = aligned_height;
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ybf->uv_crop_width = (width + ss_x) >> ss_x;
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ybf->uv_crop_height = (height + ss_y) >> ss_y;
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ybf->uv_width = uv_width;
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ybf->uv_height = uv_height;
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ybf->border = border;
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ybf->frame_size = (int)frame_size;
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ybf->subsampling_x = ss_x;
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ybf->subsampling_y = ss_y;
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buf = ybf->buffer_alloc;
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if (buf != NULL) {
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ybf->y_stride = y_stride;
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ybf->uv_stride = uv_stride;
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#if CONFIG_VP9_HIGHBITDEPTH
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if (use_highbitdepth) {
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// Store uint16 addresses when using 16bit framebuffers
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buf = CONVERT_TO_BYTEPTR(ybf->buffer_alloc);
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ybf->flags = YV12_FLAG_HIGHBITDEPTH;
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} else {
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ybf->flags = 0;
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}
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#endif // CONFIG_VP9_HIGHBITDEPTH
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ybf->y_buffer = (uint8_t *)yv12_align_addr(
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buf + (border * y_stride) + border, vp9_byte_align);
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ybf->u_buffer = (uint8_t *)yv12_align_addr(
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buf + yplane_size + (uv_border_h * uv_stride) + uv_border_w,
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vp9_byte_align);
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ybf->v_buffer = (uint8_t *)yv12_align_addr(
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buf + yplane_size + uvplane_size + (uv_border_h * uv_stride) +
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uv_border_w, vp9_byte_align);
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}
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ybf->corrupted = 0; /* assume not corrupted by errors */
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return 0;
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}
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return -2;
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}
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int vpx_alloc_frame_buffer(YV12_BUFFER_CONFIG *ybf,
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int width, int height,
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int ss_x, int ss_y,
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#if CONFIG_VP9_HIGHBITDEPTH
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int use_highbitdepth,
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#endif
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int border,
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int byte_alignment) {
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if (ybf) {
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vpx_free_frame_buffer(ybf);
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return vpx_realloc_frame_buffer(ybf, width, height, ss_x, ss_y,
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#if CONFIG_VP9_HIGHBITDEPTH
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use_highbitdepth,
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#endif
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border, byte_alignment, NULL, NULL, NULL);
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}
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return -2;
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}
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#endif
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