1 files changed, 195 insertions, 0 deletions
diff --git a/media/libvpx/libvpx/vp9/common/vp9_alloccommon.c b/media/libvpx/libvpx/vp9/common/vp9_alloccommon.c
new file mode 100644
index 0000000000..9e73e40ea0
--- /dev/null
+++ b/media/libvpx/libvpx/vp9/common/vp9_alloccommon.c
@@ -0,0 +1,195 @@
+/*
+ *  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 "./vpx_config.h"
+#include "vpx_mem/vpx_mem.h"
+
+#include "vp9/common/vp9_alloccommon.h"
+#include "vp9/common/vp9_blockd.h"
+#include "vp9/common/vp9_entropymode.h"
+#include "vp9/common/vp9_entropymv.h"
+#include "vp9/common/vp9_onyxc_int.h"
+
+void vp9_set_mi_size(int *mi_rows, int *mi_cols, int *mi_stride, int width,
+                     int height) {
+  const int aligned_width = ALIGN_POWER_OF_TWO(width, MI_SIZE_LOG2);
+  const int aligned_height = ALIGN_POWER_OF_TWO(height, MI_SIZE_LOG2);
+  *mi_cols = aligned_width >> MI_SIZE_LOG2;
+  *mi_rows = aligned_height >> MI_SIZE_LOG2;
+  *mi_stride = calc_mi_size(*mi_cols);
+}
+
+void vp9_set_mb_size(int *mb_rows, int *mb_cols, int *mb_num, int mi_rows,
+                     int mi_cols) {
+  *mb_cols = (mi_cols + 1) >> 1;
+  *mb_rows = (mi_rows + 1) >> 1;
+  *mb_num = (*mb_rows) * (*mb_cols);
+}
+
+void vp9_set_mb_mi(VP9_COMMON *cm, int width, int height) {
+  vp9_set_mi_size(&cm->mi_rows, &cm->mi_cols, &cm->mi_stride, width, height);
+  vp9_set_mb_size(&cm->mb_rows, &cm->mb_cols, &cm->MBs, cm->mi_rows,
+                  cm->mi_cols);
+}
+
+static int alloc_seg_map(VP9_COMMON *cm, int seg_map_size) {
+  int i;
+
+  for (i = 0; i < NUM_PING_PONG_BUFFERS; ++i) {
+    cm->seg_map_array[i] = (uint8_t *)vpx_calloc(seg_map_size, 1);
+    if (cm->seg_map_array[i] == NULL) return 1;
+  }
+  cm->seg_map_alloc_size = seg_map_size;
+
+  // Init the index.
+  cm->seg_map_idx = 0;
+  cm->prev_seg_map_idx = 1;
+
+  cm->current_frame_seg_map = cm->seg_map_array[cm->seg_map_idx];
+  cm->last_frame_seg_map = cm->seg_map_array[cm->prev_seg_map_idx];
+
+  return 0;
+}
+
+static void free_seg_map(VP9_COMMON *cm) {
+  int i;
+
+  for (i = 0; i < NUM_PING_PONG_BUFFERS; ++i) {
+    vpx_free(cm->seg_map_array[i]);
+    cm->seg_map_array[i] = NULL;
+  }
+  cm->seg_map_alloc_size = 0;
+
+  cm->current_frame_seg_map = NULL;
+  cm->last_frame_seg_map = NULL;
+}
+
+void vp9_free_ref_frame_buffers(BufferPool *pool) {
+  int i;
+
+  if (!pool) return;
+
+  for (i = 0; i < FRAME_BUFFERS; ++i) {
+    if (!pool->frame_bufs[i].released &&
+        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;
+      pool->frame_bufs[i].released = 1;
+    }
+    vpx_free(pool->frame_bufs[i].mvs);
+    pool->frame_bufs[i].mvs = NULL;
+    vpx_free_frame_buffer(&pool->frame_bufs[i].buf);
+  }
+}
+
+void vp9_free_postproc_buffers(VP9_COMMON *cm) {
+#if CONFIG_VP9_POSTPROC
+  vpx_free_frame_buffer(&cm->post_proc_buffer);
+  vpx_free_frame_buffer(&cm->post_proc_buffer_int);
+  vpx_free(cm->postproc_state.limits);
+  cm->postproc_state.limits = NULL;
+  vpx_free(cm->postproc_state.generated_noise);
+  cm->postproc_state.generated_noise = NULL;
+#else
+  (void)cm;
+#endif
+}
+
+void vp9_free_context_buffers(VP9_COMMON *cm) {
+  if (cm->free_mi) cm->free_mi(cm);
+  free_seg_map(cm);
+  vpx_free(cm->above_context);
+  cm->above_context = NULL;
+  vpx_free(cm->above_seg_context);
+  cm->above_seg_context = NULL;
+  cm->above_context_alloc_cols = 0;
+  vpx_free(cm->lf.lfm);
+  cm->lf.lfm = NULL;
+}
+
+int vp9_alloc_loop_filter(VP9_COMMON *cm) {
+  vpx_free(cm->lf.lfm);
+  // Each lfm holds bit masks for all the 8x8 blocks in a 64x64 region.  The
+  // stride and rows are rounded up / truncated to a multiple of 8.
+  cm->lf.lfm_stride = (cm->mi_cols + (MI_BLOCK_SIZE - 1)) >> 3;
+  cm->lf.lfm = (LOOP_FILTER_MASK *)vpx_calloc(
+      ((cm->mi_rows + (MI_BLOCK_SIZE - 1)) >> 3) * cm->lf.lfm_stride,
+      sizeof(*cm->lf.lfm));
+  if (!cm->lf.lfm) return 1;
+  return 0;
+}
+
+int vp9_alloc_context_buffers(VP9_COMMON *cm, int width, int height) {
+  int new_mi_size;
+
+  vp9_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;
+  }
+  if (cm->above_context_alloc_cols < cm->mi_cols) {
+    vpx_free(cm->above_context);
+    cm->above_context = (ENTROPY_CONTEXT *)vpx_calloc(
+        2 * mi_cols_aligned_to_sb(cm->mi_cols) * MAX_MB_PLANE,
+        sizeof(*cm->above_context));
+    if (!cm->above_context) goto fail;
+
+    vpx_free(cm->above_seg_context);
+    cm->above_seg_context = (PARTITION_CONTEXT *)vpx_calloc(
+        mi_cols_aligned_to_sb(cm->mi_cols), sizeof(*cm->above_seg_context));
+    if (!cm->above_seg_context) goto fail;
+    cm->above_context_alloc_cols = cm->mi_cols;
+  }
+
+  if (cm->seg_map_alloc_size < cm->mi_rows * cm->mi_cols) {
+    // Create the segmentation map structure and set to 0.
+    free_seg_map(cm);
+    if (alloc_seg_map(cm, cm->mi_rows * cm->mi_cols)) goto fail;
+  }
+
+  if (vp9_alloc_loop_filter(cm)) goto fail;
+
+  return 0;
+
+fail:
+  // clear the mi_* values to force a realloc on resync
+  vp9_set_mb_mi(cm, 0, 0);
+  vp9_free_context_buffers(cm);
+  return 1;
+}
+
+void vp9_remove_common(VP9_COMMON *cm) {
+#if CONFIG_VP9_POSTPROC
+  vp9_free_postproc_buffers(cm);
+#endif
+  vp9_free_context_buffers(cm);
+
+  vpx_free(cm->fc);
+  cm->fc = NULL;
+  vpx_free(cm->frame_contexts);
+  cm->frame_contexts = NULL;
+}
+
+void vp9_init_context_buffers(VP9_COMMON *cm) {
+  cm->setup_mi(cm);
+  if (cm->last_frame_seg_map)
+    memset(cm->last_frame_seg_map, 0, cm->mi_rows * cm->mi_cols);
+}
+
+void vp9_swap_current_and_last_seg_map(VP9_COMMON *cm) {
+  // Swap indices.
+  const int tmp = cm->seg_map_idx;
+  cm->seg_map_idx = cm->prev_seg_map_idx;
+  cm->prev_seg_map_idx = tmp;
+
+  cm->current_frame_seg_map = cm->seg_map_array[cm->seg_map_idx];
+  cm->last_frame_seg_map = cm->seg_map_array[cm->prev_seg_map_idx];
+}