/* *  Copyright (c) 2013 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. */ /** * SvcContext - input parameters and state to encode a multi-layered * spatial SVC frame */ #ifndef VPX_EXAMPLES_SVC_CONTEXT_H_#define VPX_EXAMPLES_SVC_CONTEXT_H_ #include "vpx/vp8cx.h"#include "vpx/vpx_encoder.h" #ifdef __cplusplusextern "C" {#endif typedef enum SVC_LOG_LEVEL {  SVC_LOG_ERROR,  SVC_LOG_INFO,  SVC_LOG_DEBUG} SVC_LOG_LEVEL; typedef struct {  // public interface to svc_command options  int spatial_layers;   // number of spatial layers  int temporal_layers;  // number of temporal layers  int temporal_layering_mode;  SVC_LOG_LEVEL log_level;  // amount of information to display  int output_rc_stat;       // for outputting rc stats  int speed;                // speed setting for codec  int threads;  int aqmode;  // turns on aq-mode=3 (cyclic_refresh): 0=off, 1=on.  // private storage for vpx_svc_encode  void *internal;} SvcContext; #define OPTION_BUFFER_SIZE 1024#define COMPONENTS 4  // psnr & sse statistics maintained for total, y, u, v typedef struct SvcInternal {  char options[OPTION_BUFFER_SIZE];  // set by vpx_svc_set_options   // values extracted from option, quantizers  vpx_svc_extra_cfg_t svc_params;  int enable_auto_alt_ref[VPX_SS_MAX_LAYERS];  int bitrates[VPX_MAX_LAYERS];   // accumulated statistics  double psnr_sum[VPX_SS_MAX_LAYERS][COMPONENTS];  // total/Y/U/V  uint64_t sse_sum[VPX_SS_MAX_LAYERS][COMPONENTS];  uint32_t bytes_sum[VPX_SS_MAX_LAYERS];   // codec encoding values  int width;    // width of highest layer  int height;   // height of highest layer  int kf_dist;  // distance between keyframes   // state variables  int psnr_pkt_received;  int layer;  int use_multiple_frame_contexts;   vpx_codec_ctx_t *codec_ctx;} SvcInternal_t; /** * Set SVC options * options are supplied as a single string separated by spaces * Format: encoding-mode=<i|ip|alt-ip|gf> *         layers=<layer_count> *         scaling-factors=<n1>/<d1>,<n2>/<d2>,... *         quantizers=<q1>,<q2>,... */vpx_codec_err_t vpx_svc_set_options(SvcContext *svc_ctx, const char *options); /** * initialize SVC encoding */vpx_codec_err_t vpx_svc_init(SvcContext *svc_ctx, vpx_codec_ctx_t *codec_ctx,                             vpx_codec_iface_t *iface,                             vpx_codec_enc_cfg_t *cfg);/** * encode a frame of video with multiple layers */vpx_codec_err_t vpx_svc_encode(SvcContext *svc_ctx, vpx_codec_ctx_t *codec_ctx,                               struct vpx_image *rawimg, vpx_codec_pts_t pts,                               int64_t duration, int deadline); /** * finished with svc encoding, release allocated resources */void vpx_svc_release(SvcContext *svc_ctx); /** * dump accumulated statistics and reset accumulated values */void vpx_svc_dump_statistics(SvcContext *svc_ctx); #ifdef __cplusplus}  // extern "C"#endif #endif  // VPX_EXAMPLES_SVC_CONTEXT_H_