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path: root/thirdparty/libvpx/vpx_scale/generic/yv12config.c
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Diffstat (limited to 'thirdparty/libvpx/vpx_scale/generic/yv12config.c')
-rw-r--r--thirdparty/libvpx/vpx_scale/generic/yv12config.c287
1 files changed, 287 insertions, 0 deletions
diff --git a/thirdparty/libvpx/vpx_scale/generic/yv12config.c b/thirdparty/libvpx/vpx_scale/generic/yv12config.c
new file mode 100644
index 0000000000..6bbb6d8d48
--- /dev/null
+++ b/thirdparty/libvpx/vpx_scale/generic/yv12config.c
@@ -0,0 +1,287 @@
+/*
+ * Copyright (c) 2010 The WebM project authors. All Rights Reserved.
+ *
+ * Use of this source code is governed by a BSD-style license
+ * that can be found in the LICENSE file in the root of the source
+ * tree. An additional intellectual property rights grant can be found
+ * in the file PATENTS. All contributing project authors may
+ * be found in the AUTHORS file in the root of the source tree.
+ */
+
+#include <assert.h>
+
+#include "vpx_scale/yv12config.h"
+#include "vpx_mem/vpx_mem.h"
+#include "vpx_ports/mem.h"
+
+/****************************************************************************
+* Exports
+****************************************************************************/
+
+/****************************************************************************
+ *
+ ****************************************************************************/
+#define yv12_align_addr(addr, align) \
+ (void*)(((size_t)(addr) + ((align) - 1)) & (size_t)-(align))
+
+int
+vp8_yv12_de_alloc_frame_buffer(YV12_BUFFER_CONFIG *ybf) {
+ if (ybf) {
+ // If libvpx is using frame buffer callbacks then buffer_alloc_sz must
+ // not be set.
+ if (ybf->buffer_alloc_sz > 0) {
+ vpx_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 vp8_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 *)vpx_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
+ * vpx_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 vp8_yv12_alloc_frame_buffer(YV12_BUFFER_CONFIG *ybf,
+ int width, int height, int border) {
+ if (ybf) {
+ vp8_yv12_de_alloc_frame_buffer(ybf);
+ return vp8_yv12_realloc_frame_buffer(ybf, width, height, border);
+ }
+ return -2;
+}
+
+#if CONFIG_VP9
+// TODO(jkoleszar): Maybe replace this with struct vpx_image
+
+int vpx_free_frame_buffer(YV12_BUFFER_CONFIG *ybf) {
+ if (ybf) {
+ if (ybf->buffer_alloc_sz > 0) {
+ vpx_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 vpx_realloc_frame_buffer(YV12_BUFFER_CONFIG *ybf,
+ int width, int height,
+ int ss_x, int ss_y,
+#if CONFIG_VP9_HIGHBITDEPTH
+ int use_highbitdepth,
+#endif
+ int border,
+ int byte_alignment,
+ vpx_codec_frame_buffer_t *fb,
+ vpx_get_frame_buffer_cb_fn_t cb,
+ void *cb_priv) {
+ if (ybf) {
+ const int vp9_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_VP9_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_VP9_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.
+ vpx_free(ybf->buffer_alloc);
+ ybf->buffer_alloc = NULL;
+
+ if (frame_size != (size_t)frame_size)
+ return -1;
+
+ ybf->buffer_alloc = (uint8_t *)vpx_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
+ * vpx_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_VP9_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_VP9_HIGHBITDEPTH
+
+ ybf->y_buffer = (uint8_t *)yv12_align_addr(
+ buf + (border * y_stride) + border, vp9_byte_align);
+ ybf->u_buffer = (uint8_t *)yv12_align_addr(
+ buf + yplane_size + (uv_border_h * uv_stride) + uv_border_w,
+ vp9_byte_align);
+ ybf->v_buffer = (uint8_t *)yv12_align_addr(
+ buf + yplane_size + uvplane_size + (uv_border_h * uv_stride) +
+ uv_border_w, vp9_byte_align);
+
+ ybf->corrupted = 0; /* assume not corrupted by errors */
+ return 0;
+ }
+ return -2;
+}
+
+int vpx_alloc_frame_buffer(YV12_BUFFER_CONFIG *ybf,
+ int width, int height,
+ int ss_x, int ss_y,
+#if CONFIG_VP9_HIGHBITDEPTH
+ int use_highbitdepth,
+#endif
+ int border,
+ int byte_alignment) {
+ if (ybf) {
+ vpx_free_frame_buffer(ybf);
+ return vpx_realloc_frame_buffer(ybf, width, height, ss_x, ss_y,
+#if CONFIG_VP9_HIGHBITDEPTH
+ use_highbitdepth,
+#endif
+ border, byte_alignment, NULL, NULL, NULL);
+ }
+ return -2;
+}
+#endif
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