media/libvpx/vpx/svc_context.h@ac0c01689b40 (annotated)
media/libvpx/vpx/svc_context.h
Thu, 15 Jan 2015 15:59:08 +0100
- author
- Michael Schloh von Bennewitz <michael@schloh.com>
- date
- Thu, 15 Jan 2015 15:59:08 +0100
- branch
- TOR_BUG_9701
- changeset 10
- ac0c01689b40
- permissions
- -rw-r--r--
Implement a real Private Browsing Mode condition by changing the API/ABI;
This solves Tor bug #9701, complying with disk avoidance documented in
https://www.torproject.org/projects/torbrowser/design/#disk-avoidance.
| michael@0 | 1 | /* |
| michael@0 | 2 | * Copyright (c) 2013 The WebM project authors. All Rights Reserved. |
| michael@0 | 3 | * |
| michael@0 | 4 | * Use of this source code is governed by a BSD-style license |
| michael@0 | 5 | * that can be found in the LICENSE file in the root of the source |
| michael@0 | 6 | * tree. An additional intellectual property rights grant can be found |
| michael@0 | 7 | * in the file PATENTS. All contributing project authors may |
| michael@0 | 8 | * be found in the AUTHORS file in the root of the source tree. |
| michael@0 | 9 | */ |
| michael@0 | 10 | |
| michael@0 | 11 | /** |
| michael@0 | 12 | * SvcContext - input parameters and state to encode a multi-layered |
| michael@0 | 13 | * spatial SVC frame |
| michael@0 | 14 | */ |
| michael@0 | 15 | |
| michael@0 | 16 | #ifndef VPX_SVC_CONTEXT_H_ |
| michael@0 | 17 | #define VPX_SVC_CONTEXT_H_ |
| michael@0 | 18 | |
| michael@0 | 19 | #include "vpx/vp8cx.h" |
| michael@0 | 20 | #include "vpx/vpx_encoder.h" |
| michael@0 | 21 | |
| michael@0 | 22 | #ifdef __cplusplus |
| michael@0 | 23 | extern "C" { |
| michael@0 | 24 | #endif |
| michael@0 | 25 | |
| michael@0 | 26 | typedef enum SVC_ENCODING_MODE { |
| michael@0 | 27 | INTER_LAYER_PREDICTION_I, |
| michael@0 | 28 | ALT_INTER_LAYER_PREDICTION_IP, |
| michael@0 | 29 | INTER_LAYER_PREDICTION_IP, |
| michael@0 | 30 | USE_GOLDEN_FRAME |
| michael@0 | 31 | } SVC_ENCODING_MODE; |
| michael@0 | 32 | |
| michael@0 | 33 | typedef enum SVC_LOG_LEVEL { |
| michael@0 | 34 | SVC_LOG_ERROR, |
| michael@0 | 35 | SVC_LOG_INFO, |
| michael@0 | 36 | SVC_LOG_DEBUG |
| michael@0 | 37 | } SVC_LOG_LEVEL; |
| michael@0 | 38 | |
| michael@0 | 39 | typedef struct { |
| michael@0 | 40 | // public interface to svc_command options |
| michael@0 | 41 | int spatial_layers; // number of layers |
| michael@0 | 42 | int first_frame_full_size; // set to one to force first frame full size |
| michael@0 | 43 | SVC_ENCODING_MODE encoding_mode; // svc encoding strategy |
| michael@0 | 44 | SVC_LOG_LEVEL log_level; // amount of information to display |
| michael@0 | 45 | int log_print; // when set, printf log messages instead of returning the |
| michael@0 | 46 | // message with svc_get_message |
| michael@0 | 47 | |
| michael@0 | 48 | // private storage for vpx_svc_encode |
| michael@0 | 49 | void *internal; |
| michael@0 | 50 | } SvcContext; |
| michael@0 | 51 | |
| michael@0 | 52 | /** |
| michael@0 | 53 | * Set SVC options |
| michael@0 | 54 | * options are supplied as a single string separated by spaces |
| michael@0 | 55 | * Format: encoding-mode=<i|ip|alt-ip|gf> |
| michael@0 | 56 | * layers=<layer_count> |
| michael@0 | 57 | * scaling-factors=<n1>/<d1>,<n2>/<d2>,... |
| michael@0 | 58 | * quantizers=<q1>,<q2>,... |
| michael@0 | 59 | */ |
| michael@0 | 60 | vpx_codec_err_t vpx_svc_set_options(SvcContext *svc_ctx, const char *options); |
| michael@0 | 61 | |
| michael@0 | 62 | /** |
| michael@0 | 63 | * Set SVC quantizer values |
| michael@0 | 64 | * values comma separated, ordered from lowest resolution to highest |
| michael@0 | 65 | * e.g., "60,53,39,33,27" |
| michael@0 | 66 | */ |
| michael@0 | 67 | vpx_codec_err_t vpx_svc_set_quantizers(SvcContext *svc_ctx, |
| michael@0 | 68 | const char *quantizer_values); |
| michael@0 | 69 | |
| michael@0 | 70 | /** |
| michael@0 | 71 | * Set SVC scale factors |
| michael@0 | 72 | * values comma separated, ordered from lowest resolution to highest |
| michael@0 | 73 | * e.g., "4/16,5/16,7/16,11/16,16/16" |
| michael@0 | 74 | */ |
| michael@0 | 75 | vpx_codec_err_t vpx_svc_set_scale_factors(SvcContext *svc_ctx, |
| michael@0 | 76 | const char *scale_factors); |
| michael@0 | 77 | |
| michael@0 | 78 | /** |
| michael@0 | 79 | * initialize SVC encoding |
| michael@0 | 80 | */ |
| michael@0 | 81 | vpx_codec_err_t vpx_svc_init(SvcContext *svc_ctx, vpx_codec_ctx_t *codec_ctx, |
| michael@0 | 82 | vpx_codec_iface_t *iface, |
| michael@0 | 83 | vpx_codec_enc_cfg_t *cfg); |
| michael@0 | 84 | /** |
| michael@0 | 85 | * encode a frame of video with multiple layers |
| michael@0 | 86 | */ |
| michael@0 | 87 | vpx_codec_err_t vpx_svc_encode(SvcContext *svc_ctx, vpx_codec_ctx_t *codec_ctx, |
| michael@0 | 88 | struct vpx_image *rawimg, vpx_codec_pts_t pts, |
| michael@0 | 89 | int64_t duration, int deadline); |
| michael@0 | 90 | |
| michael@0 | 91 | /** |
| michael@0 | 92 | * finished with svc encoding, release allocated resources |
| michael@0 | 93 | */ |
| michael@0 | 94 | void vpx_svc_release(SvcContext *svc_ctx); |
| michael@0 | 95 | |
| michael@0 | 96 | /** |
| michael@0 | 97 | * dump accumulated statistics and reset accumulated values |
| michael@0 | 98 | */ |
| michael@0 | 99 | const char *vpx_svc_dump_statistics(SvcContext *svc_ctx); |
| michael@0 | 100 | |
| michael@0 | 101 | /** |
| michael@0 | 102 | * get status message from previous encode |
| michael@0 | 103 | */ |
| michael@0 | 104 | const char *vpx_svc_get_message(const SvcContext *svc_ctx); |
| michael@0 | 105 | |
| michael@0 | 106 | /** |
| michael@0 | 107 | * return size of encoded data to be returned by vpx_svc_get_buffer |
| michael@0 | 108 | */ |
| michael@0 | 109 | size_t vpx_svc_get_frame_size(const SvcContext *svc_ctx); |
| michael@0 | 110 | |
| michael@0 | 111 | /** |
| michael@0 | 112 | * return buffer with encoded data |
| michael@0 | 113 | */ |
| michael@0 | 114 | void *vpx_svc_get_buffer(const SvcContext *svc_ctx); |
| michael@0 | 115 | |
| michael@0 | 116 | /** |
| michael@0 | 117 | * return spatial resolution of the specified layer |
| michael@0 | 118 | */ |
| michael@0 | 119 | vpx_codec_err_t vpx_svc_get_layer_resolution(const SvcContext *svc_ctx, |
| michael@0 | 120 | int layer, |
| michael@0 | 121 | unsigned int *width, |
| michael@0 | 122 | unsigned int *height); |
| michael@0 | 123 | /** |
| michael@0 | 124 | * return number of frames that have been encoded |
| michael@0 | 125 | */ |
| michael@0 | 126 | int vpx_svc_get_encode_frame_count(const SvcContext *svc_ctx); |
| michael@0 | 127 | |
| michael@0 | 128 | /** |
| michael@0 | 129 | * return 1 if last encoded frame was a keyframe |
| michael@0 | 130 | */ |
| michael@0 | 131 | int vpx_svc_is_keyframe(const SvcContext *svc_ctx); |
| michael@0 | 132 | |
| michael@0 | 133 | /** |
| michael@0 | 134 | * force the next frame to be a keyframe |
| michael@0 | 135 | */ |
| michael@0 | 136 | void vpx_svc_set_keyframe(SvcContext *svc_ctx); |
| michael@0 | 137 | |
| michael@0 | 138 | #ifdef __cplusplus |
| michael@0 | 139 | } // extern "C" |
| michael@0 | 140 | #endif |
| michael@0 | 141 | |
| michael@0 | 142 | #endif /* VPX_SVC_CONTEXT_H_ */ |
