Move aom source to a sub-directory under media/libaom

There is no damned reason to treat this differently than any other media lib given its license and there never was.

1 files changed, 300 insertions, 0 deletions

diff --git a/media/libaom/src/av1/common/alloccommon.c b/media/libaom/src/av1/common/alloccommon.c
new file mode 100644
index 000000000..1bf81c91d
--- /dev/null
+++ b/media/libaom/src/av1/common/alloccommon.c
@@ -0,0 +1,300 @@
+/*
+ *
+ * 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 "config/aom_config.h"
+
+#include "aom_mem/aom_mem.h"
+
+#include "av1/common/alloccommon.h"
+#include "av1/common/blockd.h"
+#include "av1/common/entropymode.h"
+#include "av1/common/entropymv.h"
+#include "av1/common/onyxc_int.h"
+
+int av1_get_MBs(int width, int height) {
+  const int aligned_width = ALIGN_POWER_OF_TWO(width, 3);
+  const int aligned_height = ALIGN_POWER_OF_TWO(height, 3);
+  const int mi_cols = aligned_width >> MI_SIZE_LOG2;
+  const int mi_rows = aligned_height >> MI_SIZE_LOG2;
+
+  const int mb_cols = (mi_cols + 2) >> 2;
+  const int mb_rows = (mi_rows + 2) >> 2;
+  return mb_rows * mb_cols;
+}
+
+#if LOOP_FILTER_BITMASK
+static int alloc_loop_filter_mask(AV1_COMMON *cm) {
+  aom_free(cm->lf.lfm);
+  cm->lf.lfm = NULL;
+
+  // Each lfm holds bit masks for all the 4x4 blocks in a max
+  // 64x64 (128x128 for ext_partitions) region.  The stride
+  // and rows are rounded up / truncated to a multiple of 16
+  // (32 for ext_partition).
+  cm->lf.lfm_stride = (cm->mi_cols + (MI_SIZE_64X64 - 1)) >> MIN_MIB_SIZE_LOG2;
+  cm->lf.lfm_num = ((cm->mi_rows + (MI_SIZE_64X64 - 1)) >> MIN_MIB_SIZE_LOG2) *
+                   cm->lf.lfm_stride;
+  cm->lf.lfm =
+      (LoopFilterMask *)aom_calloc(cm->lf.lfm_num, sizeof(*cm->lf.lfm));
+  if (!cm->lf.lfm) return 1;
+
+  unsigned int i;
+  for (i = 0; i < cm->lf.lfm_num; ++i) av1_zero(cm->lf.lfm[i]);
+
+  return 0;
+}
+
+static void free_loop_filter_mask(AV1_COMMON *cm) {
+  if (cm->lf.lfm == NULL) return;
+
+  aom_free(cm->lf.lfm);
+  cm->lf.lfm = NULL;
+  cm->lf.lfm_num = 0;
+  cm->lf.lfm_stride = 0;
+}
+#endif
+
+void av1_set_mb_mi(AV1_COMMON *cm, int width, int height) {
+  // Ensure that the decoded width and height are both multiples of
+  // 8 luma pixels (note: this may only be a multiple of 4 chroma pixels if
+  // subsampling is used).
+  // This simplifies the implementation of various experiments,
+  // eg. cdef, which operates on units of 8x8 luma pixels.
+  const int aligned_width = ALIGN_POWER_OF_TWO(width, 3);
+  const int aligned_height = ALIGN_POWER_OF_TWO(height, 3);
+
+  cm->mi_cols = aligned_width >> MI_SIZE_LOG2;
+  cm->mi_rows = aligned_height >> MI_SIZE_LOG2;
+  cm->mi_stride = calc_mi_size(cm->mi_cols);
+
+  cm->mb_cols = (cm->mi_cols + 2) >> 2;
+  cm->mb_rows = (cm->mi_rows + 2) >> 2;
+  cm->MBs = cm->mb_rows * cm->mb_cols;
+
+#if LOOP_FILTER_BITMASK
+  alloc_loop_filter_mask(cm);
+#endif
+}
+
+void av1_free_ref_frame_buffers(BufferPool *pool) {
+  int i;
+
+  for (i = 0; i < FRAME_BUFFERS; ++i) {
+    if (pool->frame_bufs[i].ref_count > 0 &&
+        pool->frame_bufs[i].raw_frame_buffer.data != NULL) {
+      pool->release_fb_cb(pool->cb_priv, &pool->frame_bufs[i].raw_frame_buffer);
+      pool->frame_bufs[i].ref_count = 0;
+    }
+    aom_free(pool->frame_bufs[i].mvs);
+    pool->frame_bufs[i].mvs = NULL;
+    aom_free(pool->frame_bufs[i].seg_map);
+    pool->frame_bufs[i].seg_map = NULL;
+    aom_free_frame_buffer(&pool->frame_bufs[i].buf);
+  }
+}
+
+// Assumes cm->rst_info[p].restoration_unit_size is already initialized
+void av1_alloc_restoration_buffers(AV1_COMMON *cm) {
+  const int num_planes = av1_num_planes(cm);
+  for (int p = 0; p < num_planes; ++p)
+    av1_alloc_restoration_struct(cm, &cm->rst_info[p], p > 0);
+
+  if (cm->rst_tmpbuf == NULL) {
+    CHECK_MEM_ERROR(cm, cm->rst_tmpbuf,
+                    (int32_t *)aom_memalign(16, RESTORATION_TMPBUF_SIZE));
+  }
+
+  if (cm->rlbs == NULL) {
+    CHECK_MEM_ERROR(cm, cm->rlbs, aom_malloc(sizeof(RestorationLineBuffers)));
+  }
+
+  // For striped loop restoration, we divide each row of tiles into "stripes",
+  // of height 64 luma pixels but with an offset by RESTORATION_UNIT_OFFSET
+  // luma pixels to match the output from CDEF. We will need to store 2 *
+  // RESTORATION_CTX_VERT lines of data for each stripe, and also need to be
+  // able to quickly answer the question "Where is the <n>'th stripe for tile
+  // row <m>?" To make that efficient, we generate the rst_last_stripe array.
+  int num_stripes = 0;
+  for (int i = 0; i < cm->tile_rows; ++i) {
+    TileInfo tile_info;
+    av1_tile_set_row(&tile_info, cm, i);
+    const int mi_h = tile_info.mi_row_end - tile_info.mi_row_start;
+    const int ext_h = RESTORATION_UNIT_OFFSET + (mi_h << MI_SIZE_LOG2);
+    const int tile_stripes = (ext_h + 63) / 64;
+    num_stripes += tile_stripes;
+    cm->rst_end_stripe[i] = num_stripes;
+  }
+
+  // Now we need to allocate enough space to store the line buffers for the
+  // stripes
+  const int frame_w = cm->superres_upscaled_width;
+  const int use_highbd = cm->seq_params.use_highbitdepth ? 1 : 0;
+
+  for (int p = 0; p < num_planes; ++p) {
+    const int is_uv = p > 0;
+    const int ss_x = is_uv && cm->seq_params.subsampling_x;
+    const int plane_w = ((frame_w + ss_x) >> ss_x) + 2 * RESTORATION_EXTRA_HORZ;
+    const int stride = ALIGN_POWER_OF_TWO(plane_w, 5);
+    const int buf_size = num_stripes * stride * RESTORATION_CTX_VERT
+                         << use_highbd;
+    RestorationStripeBoundaries *boundaries = &cm->rst_info[p].boundaries;
+
+    if (buf_size != boundaries->stripe_boundary_size ||
+        boundaries->stripe_boundary_above == NULL ||
+        boundaries->stripe_boundary_below == NULL) {
+      aom_free(boundaries->stripe_boundary_above);
+      aom_free(boundaries->stripe_boundary_below);
+
+      CHECK_MEM_ERROR(cm, boundaries->stripe_boundary_above,
+                      (uint8_t *)aom_memalign(32, buf_size));
+      CHECK_MEM_ERROR(cm, boundaries->stripe_boundary_below,
+                      (uint8_t *)aom_memalign(32, buf_size));
+
+      boundaries->stripe_boundary_size = buf_size;
+    }
+    boundaries->stripe_boundary_stride = stride;
+  }
+}
+
+void av1_free_restoration_buffers(AV1_COMMON *cm) {
+  int p;
+  for (p = 0; p < MAX_MB_PLANE; ++p)
+    av1_free_restoration_struct(&cm->rst_info[p]);
+  aom_free(cm->rst_tmpbuf);
+  cm->rst_tmpbuf = NULL;
+  aom_free(cm->rlbs);
+  cm->rlbs = NULL;
+  for (p = 0; p < MAX_MB_PLANE; ++p) {
+    RestorationStripeBoundaries *boundaries = &cm->rst_info[p].boundaries;
+    aom_free(boundaries->stripe_boundary_above);
+    aom_free(boundaries->stripe_boundary_below);
+    boundaries->stripe_boundary_above = NULL;
+    boundaries->stripe_boundary_below = NULL;
+  }
+
+  aom_free_frame_buffer(&cm->rst_frame);
+}
+
+void av1_free_above_context_buffers(AV1_COMMON *cm,
+                                    int num_free_above_contexts) {
+  int i;
+  const int num_planes = cm->num_allocated_above_context_planes;
+
+  for (int tile_row = 0; tile_row < num_free_above_contexts; tile_row++) {
+    for (i = 0; i < num_planes; i++) {
+      aom_free(cm->above_context[i][tile_row]);
+      cm->above_context[i][tile_row] = NULL;
+    }
+    aom_free(cm->above_seg_context[tile_row]);
+    cm->above_seg_context[tile_row] = NULL;
+
+    aom_free(cm->above_txfm_context[tile_row]);
+    cm->above_txfm_context[tile_row] = NULL;
+  }
+  for (i = 0; i < num_planes; i++) {
+    aom_free(cm->above_context[i]);
+    cm->above_context[i] = NULL;
+  }
+  aom_free(cm->above_seg_context);
+  cm->above_seg_context = NULL;
+
+  aom_free(cm->above_txfm_context);
+  cm->above_txfm_context = NULL;
+
+  cm->num_allocated_above_contexts = 0;
+  cm->num_allocated_above_context_mi_col = 0;
+  cm->num_allocated_above_context_planes = 0;
+}
+
+void av1_free_context_buffers(AV1_COMMON *cm) {
+  cm->free_mi(cm);
+
+  av1_free_above_context_buffers(cm, cm->num_allocated_above_contexts);
+
+#if LOOP_FILTER_BITMASK
+  free_loop_filter_mask(cm);
+#endif
+}
+
+int av1_alloc_above_context_buffers(AV1_COMMON *cm,
+                                    int num_alloc_above_contexts) {
+  const int num_planes = av1_num_planes(cm);
+  int plane_idx;
+  const int aligned_mi_cols =
+      ALIGN_POWER_OF_TWO(cm->mi_cols, MAX_MIB_SIZE_LOG2);
+
+  // Allocate above context buffers
+  cm->num_allocated_above_contexts = num_alloc_above_contexts;
+  cm->num_allocated_above_context_mi_col = aligned_mi_cols;
+  cm->num_allocated_above_context_planes = num_planes;
+  for (plane_idx = 0; plane_idx < num_planes; plane_idx++) {
+    cm->above_context[plane_idx] = (ENTROPY_CONTEXT **)aom_calloc(
+        num_alloc_above_contexts, sizeof(cm->above_context[0]));
+    if (!cm->above_context[plane_idx]) return 1;
+  }
+
+  cm->above_seg_context = (PARTITION_CONTEXT **)aom_calloc(
+      num_alloc_above_contexts, sizeof(cm->above_seg_context));
+  if (!cm->above_seg_context) return 1;
+
+  cm->above_txfm_context = (TXFM_CONTEXT **)aom_calloc(
+      num_alloc_above_contexts, sizeof(cm->above_txfm_context));
+  if (!cm->above_txfm_context) return 1;
+
+  for (int tile_row = 0; tile_row < num_alloc_above_contexts; tile_row++) {
+    for (plane_idx = 0; plane_idx < num_planes; plane_idx++) {
+      cm->above_context[plane_idx][tile_row] = (ENTROPY_CONTEXT *)aom_calloc(
+          aligned_mi_cols, sizeof(*cm->above_context[0][tile_row]));
+      if (!cm->above_context[plane_idx][tile_row]) return 1;
+    }
+
+    cm->above_seg_context[tile_row] = (PARTITION_CONTEXT *)aom_calloc(
+        aligned_mi_cols, sizeof(*cm->above_seg_context[tile_row]));
+    if (!cm->above_seg_context[tile_row]) return 1;
+
+    cm->above_txfm_context[tile_row] = (TXFM_CONTEXT *)aom_calloc(
+        aligned_mi_cols, sizeof(*cm->above_txfm_context[tile_row]));
+    if (!cm->above_txfm_context[tile_row]) return 1;
+  }
+
+  return 0;
+}
+
+int av1_alloc_context_buffers(AV1_COMMON *cm, int width, int height) {
+  int new_mi_size;
+
+  av1_set_mb_mi(cm, width, height);
+  new_mi_size = cm->mi_stride * calc_mi_size(cm->mi_rows);
+  if (cm->mi_alloc_size < new_mi_size) {
+    cm->free_mi(cm);
+    if (cm->alloc_mi(cm, new_mi_size)) goto fail;
+  }
+
+  return 0;
+
+fail:
+  // clear the mi_* values to force a realloc on resync
+  av1_set_mb_mi(cm, 0, 0);
+  av1_free_context_buffers(cm);
+  return 1;
+}
+
+void av1_remove_common(AV1_COMMON *cm) {
+  av1_free_context_buffers(cm);
+
+  aom_free(cm->fc);
+  cm->fc = NULL;
+  aom_free(cm->frame_contexts);
+  cm->frame_contexts = NULL;
+}
+
+void av1_init_context_buffers(AV1_COMMON *cm) { cm->setup_mi(cm); }