1/* 2 * Copyright (c) 2013 The WebM project authors. All Rights Reserved. 3 * 4 * Use of this source code is governed by a BSD-style license 5 * that can be found in the LICENSE file in the root of the source 6 * tree. An additional intellectual property rights grant can be found 7 * in the file PATENTS. All contributing project authors may 8 * be found in the AUTHORS file in the root of the source tree. 9 */ 10 11/** 12 * SvcContext - input parameters and state to encode a multi-layered 13 * spatial SVC frame 14 */ 15 16#ifndef VPX_SVC_CONTEXT_H_ 17#define VPX_SVC_CONTEXT_H_ 18 19#include "./vp8cx.h" 20#include "./vpx_encoder.h" 21 22#ifdef __cplusplus 23extern "C" { 24#endif 25 26typedef enum SVC_LOG_LEVEL { 27 SVC_LOG_ERROR, 28 SVC_LOG_INFO, 29 SVC_LOG_DEBUG 30} SVC_LOG_LEVEL; 31 32typedef struct { 33 // public interface to svc_command options 34 int spatial_layers; // number of spatial layers 35 int temporal_layers; // number of temporal layers 36 SVC_LOG_LEVEL log_level; // amount of information to display 37 int log_print; // when set, printf log messages instead of returning the 38 // message with svc_get_message 39 40 // private storage for vpx_svc_encode 41 void *internal; 42} SvcContext; 43 44/** 45 * Set SVC options 46 * options are supplied as a single string separated by spaces 47 * Format: encoding-mode=<i|ip|alt-ip|gf> 48 * layers=<layer_count> 49 * scaling-factors=<n1>/<d1>,<n2>/<d2>,... 50 * quantizers=<q1>,<q2>,... 51 */ 52vpx_codec_err_t vpx_svc_set_options(SvcContext *svc_ctx, const char *options); 53 54/** 55 * initialize SVC encoding 56 */ 57vpx_codec_err_t vpx_svc_init(SvcContext *svc_ctx, vpx_codec_ctx_t *codec_ctx, 58 vpx_codec_iface_t *iface, 59 vpx_codec_enc_cfg_t *cfg); 60/** 61 * encode a frame of video with multiple layers 62 */ 63vpx_codec_err_t vpx_svc_encode(SvcContext *svc_ctx, vpx_codec_ctx_t *codec_ctx, 64 struct vpx_image *rawimg, vpx_codec_pts_t pts, 65 int64_t duration, int deadline); 66 67/** 68 * finished with svc encoding, release allocated resources 69 */ 70void vpx_svc_release(SvcContext *svc_ctx); 71 72/** 73 * dump accumulated statistics and reset accumulated values 74 */ 75const char *vpx_svc_dump_statistics(SvcContext *svc_ctx); 76 77/** 78 * get status message from previous encode 79 */ 80const char *vpx_svc_get_message(const SvcContext *svc_ctx); 81 82#ifdef __cplusplus 83} // extern "C" 84#endif 85 86#endif // VPX_SVC_CONTEXT_H_ 87