Add m-esr52 at 52.6.0

1 files changed, 122 insertions, 0 deletions

diff --git a/media/libvpx/vp9/encoder/vp9_svc_layercontext.h b/media/libvpx/vp9/encoder/vp9_svc_layercontext.h
new file mode 100644
index 000000000..b6a5ea548
--- /dev/null
+++ b/media/libvpx/vp9/encoder/vp9_svc_layercontext.h
@@ -0,0 +1,122 @@
+/*
+ *  Copyright (c) 2014 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.
+ */
+
+#ifndef VP9_ENCODER_VP9_SVC_LAYERCONTEXT_H_
+#define VP9_ENCODER_VP9_SVC_LAYERCONTEXT_H_
+
+#include "vpx/vpx_encoder.h"
+
+#include "vp9/encoder/vp9_ratectrl.h"
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+typedef struct {
+  RATE_CONTROL rc;
+  int target_bandwidth;
+  int spatial_layer_target_bandwidth;  // Target for the spatial layer.
+  double framerate;
+  int avg_frame_size;
+  int max_q;
+  int min_q;
+  int scaling_factor_num;
+  int scaling_factor_den;
+  TWO_PASS twopass;
+  vpx_fixed_buf_t rc_twopass_stats_in;
+  unsigned int current_video_frame_in_layer;
+  int is_key_frame;
+  int frames_from_key_frame;
+  FRAME_TYPE last_frame_type;
+  struct lookahead_entry  *alt_ref_source;
+  int alt_ref_idx;
+  int gold_ref_idx;
+  int has_alt_frame;
+  size_t layer_size;
+  struct vpx_psnr_pkt psnr_pkt;
+} LAYER_CONTEXT;
+
+typedef struct {
+  int spatial_layer_id;
+  int temporal_layer_id;
+  int number_spatial_layers;
+  int number_temporal_layers;
+
+  int spatial_layer_to_encode;
+
+  // Workaround for multiple frame contexts
+  enum {
+    ENCODED = 0,
+    ENCODING,
+    NEED_TO_ENCODE
+  }encode_empty_frame_state;
+  struct lookahead_entry empty_frame;
+  int encode_intra_empty_frame;
+
+  // Store scaled source frames to be used for temporal filter to generate
+  // a alt ref frame.
+  YV12_BUFFER_CONFIG scaled_frames[MAX_LAG_BUFFERS];
+
+  // Layer context used for rate control in one pass temporal CBR mode or
+  // two pass spatial mode.
+  LAYER_CONTEXT layer_context[VPX_MAX_LAYERS];
+  // Indicates what sort of temporal layering is used.
+  // Currently, this only works for CBR mode.
+  VP9E_TEMPORAL_LAYERING_MODE temporal_layering_mode;
+} SVC;
+
+struct VP9_COMP;
+
+// Initialize layer context data from init_config().
+void vp9_init_layer_context(struct VP9_COMP *const cpi);
+
+// Update the layer context from a change_config() call.
+void vp9_update_layer_context_change_config(struct VP9_COMP *const cpi,
+                                            const int target_bandwidth);
+
+// Prior to encoding the frame, update framerate-related quantities
+// for the current temporal layer.
+void vp9_update_temporal_layer_framerate(struct VP9_COMP *const cpi);
+
+// Update framerate-related quantities for the current spatial layer.
+void vp9_update_spatial_layer_framerate(struct VP9_COMP *const cpi,
+                                        double framerate);
+
+// Prior to encoding the frame, set the layer context, for the current layer
+// to be encoded, to the cpi struct.
+void vp9_restore_layer_context(struct VP9_COMP *const cpi);
+
+// Save the layer context after encoding the frame.
+void vp9_save_layer_context(struct VP9_COMP *const cpi);
+
+// Initialize second pass rc for spatial svc.
+void vp9_init_second_pass_spatial_svc(struct VP9_COMP *cpi);
+
+// Increment number of video frames in layer
+void vp9_inc_frame_in_layer(struct VP9_COMP *const cpi);
+
+// Check if current layer is key frame in spatial upper layer
+int vp9_is_upper_layer_key_frame(const struct VP9_COMP *const cpi);
+
+// Get the next source buffer to encode
+struct lookahead_entry *vp9_svc_lookahead_pop(struct VP9_COMP *const cpi,
+                                              struct lookahead_ctx *ctx,
+                                              int drain);
+
+// Start a frame and initialize svc parameters
+int vp9_svc_start_frame(struct VP9_COMP *const cpi);
+
+int vp9_one_pass_cbr_svc_start_layer(struct VP9_COMP *const cpi);
+
+#ifdef __cplusplus
+}  // extern "C"
+#endif
+
+#endif  // VP9_ENCODER_VP9_SVC_LAYERCONTEXT_