1 files changed, 312 insertions, 0 deletions

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 0000000000..94b400b9e0
--- /dev/null
+++ b/third_party/aom/aom_scale/generic/yv12config.c
@@ -0,0 +1,312 @@
+/*
+ * 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/internal/aom_image_internal.h"
+#include "aom_dsp/pyramid.h"
+#include "aom_dsp/flow_estimation/corner_detect.h"
+#include "aom_mem/aom_mem.h"
+#include "aom_ports/mem.h"
+#include "aom_scale/yv12config.h"
+#include "av1/common/enums.h"
+
+/****************************************************************************
+ *  Exports
+ ****************************************************************************/
+
+/****************************************************************************
+ *
+ ****************************************************************************/
+
+// 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_AV1_ENCODER && !CONFIG_REALTIME_ONLY
+    if (ybf->y_pyramid) {
+      aom_free_pyramid(ybf->y_pyramid);
+    }
+    if (ybf->corners) {
+      av1_free_corner_list(ybf->corners);
+    }
+#endif  // CONFIG_AV1_ENCODER && !CONFIG_REALTIME_ONLY
+    aom_remove_metadata_from_frame_buffer(ybf);
+    /* 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));
+    return 0;
+  }
+
+  return AOM_CODEC_MEM_ERROR;
+}
+
+static int realloc_frame_buffer_aligned(
+    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, const int y_stride, const uint64_t yplane_size,
+    const uint64_t uvplane_size, const int aligned_width,
+    const int aligned_height, const int uv_width, const int uv_height,
+    const int uv_stride, const int uv_border_w, const int uv_border_h,
+    int num_pyramid_levels, int alloc_y_plane_only) {
+  if (ybf) {
+    const int aom_byte_align = (byte_alignment == 0) ? 1 : byte_alignment;
+    const uint64_t frame_size =
+        (1 + use_highbitdepth) * (yplane_size + 2 * uvplane_size);
+
+    uint8_t *buf = NULL;
+
+#if CONFIG_REALTIME_ONLY || !CONFIG_AV1_ENCODER
+    // We should only need an 8-bit version of the source frame if we are
+    // encoding in non-realtime mode
+    (void)num_pyramid_levels;
+    assert(num_pyramid_levels == 0);
+#endif  // CONFIG_REALTIME_ONLY || !CONFIG_AV1_ENCODER
+
+#if defined AOM_MAX_ALLOCABLE_MEMORY
+    // The size of ybf->buffer_alloc.
+    uint64_t alloc_size = frame_size;
+#if CONFIG_AV1_ENCODER && !CONFIG_REALTIME_ONLY
+    // The size of ybf->y_pyramid
+    if (num_pyramid_levels > 0) {
+      alloc_size += aom_get_pyramid_alloc_size(
+          width, height, num_pyramid_levels, use_highbitdepth);
+      alloc_size += av1_get_corner_list_size();
+    }
+#endif  // CONFIG_AV1_ENCODER && !CONFIG_REALTIME_ONLY
+    // 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 AOM_CODEC_MEM_ERROR;
+#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 AOM_CODEC_MEM_ERROR;
+
+      // Allocation to hold larger frame, or first allocation.
+      if (cb(cb_priv, (size_t)external_frame_size, fb) < 0)
+        return AOM_CODEC_MEM_ERROR;
+
+      if (fb->data == NULL || fb->size < external_frame_size)
+        return AOM_CODEC_MEM_ERROR;
+
+      ybf->buffer_alloc = (uint8_t *)aom_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 > ybf->buffer_alloc_sz) {
+      // Allocation to hold larger frame, or first allocation.
+      aom_free(ybf->buffer_alloc);
+      ybf->buffer_alloc = NULL;
+      ybf->buffer_alloc_sz = 0;
+
+      if (frame_size != (size_t)frame_size) return AOM_CODEC_MEM_ERROR;
+
+      ybf->buffer_alloc = (uint8_t *)aom_memalign(32, (size_t)frame_size);
+      if (!ybf->buffer_alloc) return AOM_CODEC_MEM_ERROR;
+
+      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);
+    }
+
+    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 *)aom_align_addr(
+        buf + (border * y_stride) + border, aom_byte_align);
+    if (!alloc_y_plane_only) {
+      ybf->u_buffer = (uint8_t *)aom_align_addr(
+          buf + yplane_size + (uv_border_h * uv_stride) + uv_border_w,
+          aom_byte_align);
+      ybf->v_buffer =
+          (uint8_t *)aom_align_addr(buf + yplane_size + uvplane_size +
+                                        (uv_border_h * uv_stride) + uv_border_w,
+                                    aom_byte_align);
+    } else {
+      ybf->u_buffer = NULL;
+      ybf->v_buffer = NULL;
+    }
+
+    ybf->use_external_reference_buffers = 0;
+
+#if CONFIG_AV1_ENCODER && !CONFIG_REALTIME_ONLY
+    if (ybf->y_pyramid) {
+      aom_free_pyramid(ybf->y_pyramid);
+      ybf->y_pyramid = NULL;
+    }
+    if (ybf->corners) {
+      av1_free_corner_list(ybf->corners);
+      ybf->corners = NULL;
+    }
+    if (num_pyramid_levels > 0) {
+      ybf->y_pyramid = aom_alloc_pyramid(width, height, num_pyramid_levels,
+                                         use_highbitdepth);
+      if (!ybf->y_pyramid) return AOM_CODEC_MEM_ERROR;
+      ybf->corners = av1_alloc_corner_list();
+      if (!ybf->corners) return AOM_CODEC_MEM_ERROR;
+    }
+#endif  // CONFIG_AV1_ENCODER && !CONFIG_REALTIME_ONLY
+
+    ybf->corrupted = 0; /* assume not corrupted by errors */
+    return 0;
+  }
+  return AOM_CODEC_MEM_ERROR;
+}
+
+static int calc_stride_and_planesize(
+    const int ss_x, const int ss_y, const int aligned_width,
+    const int aligned_height, const int border, const int byte_alignment,
+    int alloc_y_plane_only, int *y_stride, int *uv_stride,
+    uint64_t *yplane_size, uint64_t *uvplane_size, const int uv_height) {
+  /* 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 AOM_CODEC_MEM_ERROR;
+  *y_stride = aom_calc_y_stride(aligned_width, border);
+  *yplane_size =
+      (aligned_height + 2 * border) * (uint64_t)(*y_stride) + byte_alignment;
+
+  if (!alloc_y_plane_only) {
+    *uv_stride = *y_stride >> ss_x;
+    *uvplane_size =
+        (uv_height + 2 * (border >> ss_y)) * (uint64_t)(*uv_stride) +
+        byte_alignment;
+  } else {
+    *uv_stride = 0;
+    *uvplane_size = 0;
+  }
+  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,
+                             int num_pyramid_levels, int alloc_y_plane_only) {
+#if CONFIG_SIZE_LIMIT
+  if (width > DECODE_WIDTH_LIMIT || height > DECODE_HEIGHT_LIMIT)
+    return AOM_CODEC_MEM_ERROR;
+#endif
+
+  if (ybf) {
+    int y_stride = 0;
+    int uv_stride = 0;
+    uint64_t yplane_size = 0;
+    uint64_t uvplane_size = 0;
+    const int aligned_width = (width + 7) & ~7;
+    const int aligned_height = (height + 7) & ~7;
+    const int uv_width = aligned_width >> ss_x;
+    const int uv_height = aligned_height >> ss_y;
+    const int uv_border_w = border >> ss_x;
+    const int uv_border_h = border >> ss_y;
+
+    int error = calc_stride_and_planesize(
+        ss_x, ss_y, aligned_width, aligned_height, border, byte_alignment,
+        alloc_y_plane_only, &y_stride, &uv_stride, &yplane_size, &uvplane_size,
+        uv_height);
+    if (error) return error;
+    return realloc_frame_buffer_aligned(
+        ybf, width, height, ss_x, ss_y, use_highbitdepth, border,
+        byte_alignment, fb, cb, cb_priv, y_stride, yplane_size, uvplane_size,
+        aligned_width, aligned_height, uv_width, uv_height, uv_stride,
+        uv_border_w, uv_border_h, num_pyramid_levels, alloc_y_plane_only);
+  }
+  return AOM_CODEC_MEM_ERROR;
+}
+
+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, int num_pyramid_levels,
+                           int alloc_y_plane_only) {
+  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, num_pyramid_levels,
+                                    alloc_y_plane_only);
+  }
+  return AOM_CODEC_MEM_ERROR;
+}
+
+void aom_remove_metadata_from_frame_buffer(YV12_BUFFER_CONFIG *ybf) {
+  if (ybf && ybf->metadata) {
+    aom_img_metadata_array_free(ybf->metadata);
+    ybf->metadata = NULL;
+  }
+}
+
+int aom_copy_metadata_to_frame_buffer(YV12_BUFFER_CONFIG *ybf,
+                                      const aom_metadata_array_t *arr) {
+  if (!ybf || !arr || !arr->metadata_array) return -1;
+  if (ybf->metadata == arr) return 0;
+  aom_remove_metadata_from_frame_buffer(ybf);
+  ybf->metadata = aom_img_metadata_array_alloc(arr->sz);
+  if (!ybf->metadata) return -1;
+  for (size_t i = 0; i < ybf->metadata->sz; i++) {
+    ybf->metadata->metadata_array[i] = aom_img_metadata_alloc(
+        arr->metadata_array[i]->type, arr->metadata_array[i]->payload,
+        arr->metadata_array[i]->sz, arr->metadata_array[i]->insert_flag);
+    if (ybf->metadata->metadata_array[i] == NULL) {
+      aom_img_metadata_array_free(ybf->metadata);
+      ybf->metadata = NULL;
+      return -1;
+    }
+  }
+  ybf->metadata->sz = arr->sz;
+  return 0;
+}