ref: ed8f189cccda9168fd400d1ba6661b1bc14a3afa
parent: 8839cffe2ddce58faeb4f624dcc9584bcfa4019b
author: Jerome Jiang <jianj@google.com>
date: Thu Aug 16 10:41:49 EDT 2018
Refactor: move svc example files to from vpx/ to examples/ svc_encodeframe.c and svc_context.h are only used by the example encoder. Change-Id: Idb41a5a9d6a229a0bc7d2bc8dbe6575a74efc54c
--- a/examples.mk
+++ b/examples.mk
@@ -118,6 +118,8 @@
vp9_spatial_svc_encoder.SRCS += video_writer.h video_writer.c
vp9_spatial_svc_encoder.SRCS += vpx_ports/msvc.h
vp9_spatial_svc_encoder.SRCS += vpxstats.c vpxstats.h
+vp9_spatial_svc_encoder.SRCS += examples/svc_encodeframe.c
+vp9_spatial_svc_encoder.SRCS += examples/svc_context.h
vp9_spatial_svc_encoder.GUID = 4A38598D-627D-4505-9C7B-D4020C84100D
vp9_spatial_svc_encoder.DESCRIPTION = VP9 Spatial SVC Encoder
--- /dev/null
+++ b/examples/svc_context.h
@@ -1,0 +1,112 @@
+/*
+ * 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_SVC_CONTEXT_H_
+#define VPX_SVC_CONTEXT_H_
+
+#include "vpx/vp8cx.h"
+#include "vpx/vpx_encoder.h"
+
+#ifdef __cplusplus
+extern "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_SVC_CONTEXT_H_
--- /dev/null
+++ b/examples/svc_encodeframe.c
@@ -1,0 +1,633 @@
+/*
+ * 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.
+ */
+
+/**
+ * @file
+ * VP9 SVC encoding support via libvpx
+ */
+
+#include <assert.h>
+#include <math.h>
+#include <limits.h>
+#include <stdarg.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#define VPX_DISABLE_CTRL_TYPECHECKS 1
+#include "./vpx_config.h"
+#include "./svc_context.h"
+#include "vpx/vp8cx.h"
+#include "vpx/vpx_encoder.h"
+#include "vpx_mem/vpx_mem.h"
+#include "vp9/common/vp9_onyxc_int.h"
+
+#ifdef __MINGW32__
+#define strtok_r strtok_s
+#ifndef MINGW_HAS_SECURE_API
+// proto from /usr/x86_64-w64-mingw32/include/sec_api/string_s.h
+_CRTIMP char *__cdecl strtok_s(char *str, const char *delim, char **context);
+#endif /* MINGW_HAS_SECURE_API */
+#endif /* __MINGW32__ */
+
+#ifdef _MSC_VER
+#define strdup _strdup
+#define strtok_r strtok_s
+#endif
+
+#define SVC_REFERENCE_FRAMES 8
+#define SUPERFRAME_SLOTS (8)
+#define SUPERFRAME_BUFFER_SIZE (SUPERFRAME_SLOTS * sizeof(uint32_t) + 2)
+
+#define MAX_QUANTIZER 63
+
+static const int DEFAULT_SCALE_FACTORS_NUM[VPX_SS_MAX_LAYERS] = { 4, 5, 7, 11,+ 16 };
+
+static const int DEFAULT_SCALE_FACTORS_DEN[VPX_SS_MAX_LAYERS] = { 16, 16, 16,+ 16, 16 };
+
+static const int DEFAULT_SCALE_FACTORS_NUM_2x[VPX_SS_MAX_LAYERS] = { 1, 2, 4 };+
+static const int DEFAULT_SCALE_FACTORS_DEN_2x[VPX_SS_MAX_LAYERS] = { 4, 4, 4 };+
+typedef enum {+ QUANTIZER = 0,
+ BITRATE,
+ SCALE_FACTOR,
+ AUTO_ALT_REF,
+ ALL_OPTION_TYPES
+} LAYER_OPTION_TYPE;
+
+static const int option_max_values[ALL_OPTION_TYPES] = { 63, INT_MAX, INT_MAX,+ 1 };
+
+static const int option_min_values[ALL_OPTION_TYPES] = { 0, 0, 1, 0 };+
+// One encoded frame
+typedef struct FrameData {+ void *buf; // compressed data buffer
+ size_t size; // length of compressed data
+ vpx_codec_frame_flags_t flags; /**< flags for this frame */
+ struct FrameData *next;
+} FrameData;
+
+static SvcInternal_t *get_svc_internal(SvcContext *svc_ctx) {+ if (svc_ctx == NULL) return NULL;
+ if (svc_ctx->internal == NULL) {+ SvcInternal_t *const si = (SvcInternal_t *)malloc(sizeof(*si));
+ if (si != NULL) {+ memset(si, 0, sizeof(*si));
+ }
+ svc_ctx->internal = si;
+ }
+ return (SvcInternal_t *)svc_ctx->internal;
+}
+
+static const SvcInternal_t *get_const_svc_internal(const SvcContext *svc_ctx) {+ if (svc_ctx == NULL) return NULL;
+ return (const SvcInternal_t *)svc_ctx->internal;
+}
+
+static int svc_log(SvcContext *svc_ctx, SVC_LOG_LEVEL level, const char *fmt,
+ ...) {+ char buf[512];
+ int retval = 0;
+ va_list ap;
+
+ if (level > svc_ctx->log_level) {+ return retval;
+ }
+
+ va_start(ap, fmt);
+ retval = vsnprintf(buf, sizeof(buf), fmt, ap);
+ va_end(ap);
+
+ printf("%s", buf);+
+ return retval;
+}
+
+static vpx_codec_err_t extract_option(LAYER_OPTION_TYPE type, char *input,
+ int *value0, int *value1) {+ if (type == SCALE_FACTOR) {+ *value0 = (int)strtol(input, &input, 10);
+ if (*input++ != '/') return VPX_CODEC_INVALID_PARAM;
+ *value1 = (int)strtol(input, &input, 10);
+
+ if (*value0 < option_min_values[SCALE_FACTOR] ||
+ *value1 < option_min_values[SCALE_FACTOR] ||
+ *value0 > option_max_values[SCALE_FACTOR] ||
+ *value1 > option_max_values[SCALE_FACTOR] ||
+ *value0 > *value1) // num shouldn't be greater than den
+ return VPX_CODEC_INVALID_PARAM;
+ } else {+ *value0 = atoi(input);
+ if (*value0 < option_min_values[type] || *value0 > option_max_values[type])
+ return VPX_CODEC_INVALID_PARAM;
+ }
+ return VPX_CODEC_OK;
+}
+
+static vpx_codec_err_t parse_layer_options_from_string(SvcContext *svc_ctx,
+ LAYER_OPTION_TYPE type,
+ const char *input,
+ int *option0,
+ int *option1) {+ int i;
+ vpx_codec_err_t res = VPX_CODEC_OK;
+ char *input_string;
+ char *token;
+ const char *delim = ",";
+ char *save_ptr;
+ int num_layers = svc_ctx->spatial_layers;
+ if (type == BITRATE)
+ num_layers = svc_ctx->spatial_layers * svc_ctx->temporal_layers;
+
+ if (input == NULL || option0 == NULL ||
+ (option1 == NULL && type == SCALE_FACTOR))
+ return VPX_CODEC_INVALID_PARAM;
+
+ input_string = strdup(input);
+ token = strtok_r(input_string, delim, &save_ptr);
+ for (i = 0; i < num_layers; ++i) {+ if (token != NULL) {+ res = extract_option(type, token, option0 + i, option1 + i);
+ if (res != VPX_CODEC_OK) break;
+ token = strtok_r(NULL, delim, &save_ptr);
+ } else {+ break;
+ }
+ }
+ if (res == VPX_CODEC_OK && i != num_layers) {+ svc_log(svc_ctx, SVC_LOG_ERROR,
+ "svc: layer params type: %d %d values required, "
+ "but only %d specified\n",
+ type, num_layers, i);
+ res = VPX_CODEC_INVALID_PARAM;
+ }
+ free(input_string);
+ return res;
+}
+
+/**
+ * Parse SVC encoding options
+ * Format: encoding-mode=<svc_mode>,layers=<layer_count>
+ * scale-factors=<n1>/<d1>,<n2>/<d2>,...
+ * quantizers=<q1>,<q2>,...
+ * svc_mode = [i|ip|alt_ip|gf]
+ */
+static vpx_codec_err_t parse_options(SvcContext *svc_ctx, const char *options) {+ char *input_string;
+ char *option_name;
+ char *option_value;
+ char *input_ptr = NULL;
+ SvcInternal_t *const si = get_svc_internal(svc_ctx);
+ vpx_codec_err_t res = VPX_CODEC_OK;
+ int i, alt_ref_enabled = 0;
+
+ if (options == NULL) return VPX_CODEC_OK;
+ input_string = strdup(options);
+
+ // parse option name
+ option_name = strtok_r(input_string, "=", &input_ptr);
+ while (option_name != NULL) {+ // parse option value
+ option_value = strtok_r(NULL, " ", &input_ptr);
+ if (option_value == NULL) {+ svc_log(svc_ctx, SVC_LOG_ERROR, "option missing value: %s\n",
+ option_name);
+ res = VPX_CODEC_INVALID_PARAM;
+ break;
+ }
+ if (strcmp("spatial-layers", option_name) == 0) {+ svc_ctx->spatial_layers = atoi(option_value);
+ } else if (strcmp("temporal-layers", option_name) == 0) {+ svc_ctx->temporal_layers = atoi(option_value);
+ } else if (strcmp("scale-factors", option_name) == 0) {+ res = parse_layer_options_from_string(svc_ctx, SCALE_FACTOR, option_value,
+ si->svc_params.scaling_factor_num,
+ si->svc_params.scaling_factor_den);
+ if (res != VPX_CODEC_OK) break;
+ } else if (strcmp("max-quantizers", option_name) == 0) {+ res =
+ parse_layer_options_from_string(svc_ctx, QUANTIZER, option_value,
+ si->svc_params.max_quantizers, NULL);
+ if (res != VPX_CODEC_OK) break;
+ } else if (strcmp("min-quantizers", option_name) == 0) {+ res =
+ parse_layer_options_from_string(svc_ctx, QUANTIZER, option_value,
+ si->svc_params.min_quantizers, NULL);
+ if (res != VPX_CODEC_OK) break;
+ } else if (strcmp("auto-alt-refs", option_name) == 0) {+ res = parse_layer_options_from_string(svc_ctx, AUTO_ALT_REF, option_value,
+ si->enable_auto_alt_ref, NULL);
+ if (res != VPX_CODEC_OK) break;
+ } else if (strcmp("bitrates", option_name) == 0) {+ res = parse_layer_options_from_string(svc_ctx, BITRATE, option_value,
+ si->bitrates, NULL);
+ if (res != VPX_CODEC_OK) break;
+ } else if (strcmp("multi-frame-contexts", option_name) == 0) {+ si->use_multiple_frame_contexts = atoi(option_value);
+ } else {+ svc_log(svc_ctx, SVC_LOG_ERROR, "invalid option: %s\n", option_name);
+ res = VPX_CODEC_INVALID_PARAM;
+ break;
+ }
+ option_name = strtok_r(NULL, "=", &input_ptr);
+ }
+ free(input_string);
+
+ for (i = 0; i < svc_ctx->spatial_layers; ++i) {+ if (si->svc_params.max_quantizers[i] > MAX_QUANTIZER ||
+ si->svc_params.max_quantizers[i] < 0 ||
+ si->svc_params.min_quantizers[i] > si->svc_params.max_quantizers[i] ||
+ si->svc_params.min_quantizers[i] < 0)
+ res = VPX_CODEC_INVALID_PARAM;
+ }
+
+ if (si->use_multiple_frame_contexts &&
+ (svc_ctx->spatial_layers > 3 ||
+ svc_ctx->spatial_layers * svc_ctx->temporal_layers > 4))
+ res = VPX_CODEC_INVALID_PARAM;
+
+ for (i = 0; i < svc_ctx->spatial_layers; ++i)
+ alt_ref_enabled += si->enable_auto_alt_ref[i];
+ if (alt_ref_enabled > REF_FRAMES - svc_ctx->spatial_layers) {+ svc_log(svc_ctx, SVC_LOG_ERROR,
+ "svc: auto alt ref: Maxinum %d(REF_FRAMES - layers) layers could"
+ "enabled auto alt reference frame, but % layers are enabled\n",
+ REF_FRAMES - svc_ctx->spatial_layers, alt_ref_enabled);
+ res = VPX_CODEC_INVALID_PARAM;
+ }
+
+ return res;
+}
+
+vpx_codec_err_t vpx_svc_set_options(SvcContext *svc_ctx, const char *options) {+ SvcInternal_t *const si = get_svc_internal(svc_ctx);
+ if (svc_ctx == NULL || options == NULL || si == NULL) {+ return VPX_CODEC_INVALID_PARAM;
+ }
+ strncpy(si->options, options, sizeof(si->options));
+ si->options[sizeof(si->options) - 1] = '\0';
+ return VPX_CODEC_OK;
+}
+
+vpx_codec_err_t assign_layer_bitrates(const SvcContext *svc_ctx,
+ vpx_codec_enc_cfg_t *const enc_cfg) {+ int i;
+ const SvcInternal_t *const si = get_const_svc_internal(svc_ctx);
+ int sl, tl, spatial_layer_target;
+
+ if (svc_ctx->temporal_layering_mode != 0) {+ if (si->bitrates[0] != 0) {+ unsigned int total_bitrate = 0;
+ for (sl = 0; sl < svc_ctx->spatial_layers; ++sl) {+ total_bitrate += si->bitrates[sl * svc_ctx->temporal_layers +
+ svc_ctx->temporal_layers - 1];
+ for (tl = 0; tl < svc_ctx->temporal_layers; ++tl) {+ enc_cfg->ss_target_bitrate[sl * svc_ctx->temporal_layers] +=
+ (unsigned int)si->bitrates[sl * svc_ctx->temporal_layers + tl];
+ enc_cfg->layer_target_bitrate[sl * svc_ctx->temporal_layers + tl] =
+ si->bitrates[sl * svc_ctx->temporal_layers + tl];
+ if (tl > 0 && (si->bitrates[sl * svc_ctx->temporal_layers + tl] <=
+ si->bitrates[sl * svc_ctx->temporal_layers + tl - 1]))
+ return VPX_CODEC_INVALID_PARAM;
+ }
+ }
+ if (total_bitrate != enc_cfg->rc_target_bitrate)
+ return VPX_CODEC_INVALID_PARAM;
+ } else {+ float total = 0;
+ float alloc_ratio[VPX_MAX_LAYERS] = { 0 };+
+ for (sl = 0; sl < svc_ctx->spatial_layers; ++sl) {+ if (si->svc_params.scaling_factor_den[sl] > 0) {+ alloc_ratio[sl] = (float)(pow(2, sl));
+ total += alloc_ratio[sl];
+ }
+ }
+
+ for (sl = 0; sl < svc_ctx->spatial_layers; ++sl) {+ enc_cfg->ss_target_bitrate[sl] = spatial_layer_target =
+ (unsigned int)(enc_cfg->rc_target_bitrate * alloc_ratio[sl] /
+ total);
+ if (svc_ctx->temporal_layering_mode == 3) {+ enc_cfg->layer_target_bitrate[sl * svc_ctx->temporal_layers] =
+ (spatial_layer_target * 6) / 10; // 60%
+ enc_cfg->layer_target_bitrate[sl * svc_ctx->temporal_layers + 1] =
+ (spatial_layer_target * 8) / 10; // 80%
+ enc_cfg->layer_target_bitrate[sl * svc_ctx->temporal_layers + 2] =
+ spatial_layer_target;
+ } else if (svc_ctx->temporal_layering_mode == 2 ||
+ svc_ctx->temporal_layering_mode == 1) {+ enc_cfg->layer_target_bitrate[sl * svc_ctx->temporal_layers] =
+ spatial_layer_target * 2 / 3;
+ enc_cfg->layer_target_bitrate[sl * svc_ctx->temporal_layers + 1] =
+ spatial_layer_target;
+ } else {+ // User should explicitly assign bitrates in this case.
+ assert(0);
+ }
+ }
+ }
+ } else {+ if (si->bitrates[0] != 0) {+ unsigned int total_bitrate = 0;
+ for (i = 0; i < svc_ctx->spatial_layers; ++i) {+ enc_cfg->ss_target_bitrate[i] = (unsigned int)si->bitrates[i];
+ enc_cfg->layer_target_bitrate[i] = (unsigned int)si->bitrates[i];
+ total_bitrate += si->bitrates[i];
+ }
+ if (total_bitrate != enc_cfg->rc_target_bitrate)
+ return VPX_CODEC_INVALID_PARAM;
+ } else {+ float total = 0;
+ float alloc_ratio[VPX_MAX_LAYERS] = { 0 };+
+ for (i = 0; i < svc_ctx->spatial_layers; ++i) {+ if (si->svc_params.scaling_factor_den[i] > 0) {+ alloc_ratio[i] = (float)(si->svc_params.scaling_factor_num[i] * 1.0 /
+ si->svc_params.scaling_factor_den[i]);
+
+ alloc_ratio[i] *= alloc_ratio[i];
+ total += alloc_ratio[i];
+ }
+ }
+ for (i = 0; i < VPX_SS_MAX_LAYERS; ++i) {+ if (total > 0) {+ enc_cfg->layer_target_bitrate[i] =
+ (unsigned int)(enc_cfg->rc_target_bitrate * alloc_ratio[i] /
+ total);
+ }
+ }
+ }
+ }
+ return VPX_CODEC_OK;
+}
+
+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 *enc_cfg) {+ vpx_codec_err_t res;
+ int i, sl, tl;
+ SvcInternal_t *const si = get_svc_internal(svc_ctx);
+ if (svc_ctx == NULL || codec_ctx == NULL || iface == NULL ||
+ enc_cfg == NULL) {+ return VPX_CODEC_INVALID_PARAM;
+ }
+ if (si == NULL) return VPX_CODEC_MEM_ERROR;
+
+ si->codec_ctx = codec_ctx;
+
+ si->width = enc_cfg->g_w;
+ si->height = enc_cfg->g_h;
+
+ si->kf_dist = enc_cfg->kf_max_dist;
+
+ if (svc_ctx->spatial_layers == 0)
+ svc_ctx->spatial_layers = VPX_SS_DEFAULT_LAYERS;
+ if (svc_ctx->spatial_layers < 1 ||
+ svc_ctx->spatial_layers > VPX_SS_MAX_LAYERS) {+ svc_log(svc_ctx, SVC_LOG_ERROR, "spatial layers: invalid value: %d\n",
+ svc_ctx->spatial_layers);
+ return VPX_CODEC_INVALID_PARAM;
+ }
+
+ // Note: temporal_layering_mode only applies to one-pass CBR
+ // si->svc_params.temporal_layering_mode = svc_ctx->temporal_layering_mode;
+ if (svc_ctx->temporal_layering_mode == 3) {+ svc_ctx->temporal_layers = 3;
+ } else if (svc_ctx->temporal_layering_mode == 2 ||
+ svc_ctx->temporal_layering_mode == 1) {+ svc_ctx->temporal_layers = 2;
+ }
+
+ for (sl = 0; sl < VPX_SS_MAX_LAYERS; ++sl) {+ si->svc_params.scaling_factor_num[sl] = DEFAULT_SCALE_FACTORS_NUM[sl];
+ si->svc_params.scaling_factor_den[sl] = DEFAULT_SCALE_FACTORS_DEN[sl];
+ si->svc_params.speed_per_layer[sl] = svc_ctx->speed;
+ }
+ if (enc_cfg->rc_end_usage == VPX_CBR && enc_cfg->g_pass == VPX_RC_ONE_PASS &&
+ svc_ctx->spatial_layers <= 3) {+ for (sl = 0; sl < svc_ctx->spatial_layers; ++sl) {+ int sl2 = (svc_ctx->spatial_layers == 2) ? sl + 1 : sl;
+ si->svc_params.scaling_factor_num[sl] = DEFAULT_SCALE_FACTORS_NUM_2x[sl2];
+ si->svc_params.scaling_factor_den[sl] = DEFAULT_SCALE_FACTORS_DEN_2x[sl2];
+ }
+ if (svc_ctx->spatial_layers == 1) {+ si->svc_params.scaling_factor_num[0] = 1;
+ si->svc_params.scaling_factor_den[0] = 1;
+ }
+ }
+ for (tl = 0; tl < svc_ctx->temporal_layers; ++tl) {+ for (sl = 0; sl < svc_ctx->spatial_layers; ++sl) {+ i = sl * svc_ctx->temporal_layers + tl;
+ si->svc_params.max_quantizers[i] = MAX_QUANTIZER;
+ si->svc_params.min_quantizers[i] = 0;
+ if (enc_cfg->rc_end_usage == VPX_CBR &&
+ enc_cfg->g_pass == VPX_RC_ONE_PASS) {+ si->svc_params.max_quantizers[i] = 56;
+ si->svc_params.min_quantizers[i] = 2;
+ }
+ }
+ }
+
+ // Parse aggregate command line options. Options must start with
+ // "layers=xx" then followed by other options
+ res = parse_options(svc_ctx, si->options);
+ if (res != VPX_CODEC_OK) return res;
+
+ if (svc_ctx->spatial_layers < 1) svc_ctx->spatial_layers = 1;
+ if (svc_ctx->spatial_layers > VPX_SS_MAX_LAYERS)
+ svc_ctx->spatial_layers = VPX_SS_MAX_LAYERS;
+
+ if (svc_ctx->temporal_layers < 1) svc_ctx->temporal_layers = 1;
+ if (svc_ctx->temporal_layers > VPX_TS_MAX_LAYERS)
+ svc_ctx->temporal_layers = VPX_TS_MAX_LAYERS;
+
+ if (svc_ctx->temporal_layers * svc_ctx->spatial_layers > VPX_MAX_LAYERS) {+ svc_log(svc_ctx, SVC_LOG_ERROR,
+ "spatial layers * temporal layers exceeds the maximum number of "
+ "allowed layers of %d\n",
+ svc_ctx->spatial_layers * svc_ctx->temporal_layers,
+ (int)VPX_MAX_LAYERS);
+ return VPX_CODEC_INVALID_PARAM;
+ }
+ res = assign_layer_bitrates(svc_ctx, enc_cfg);
+ if (res != VPX_CODEC_OK) {+ svc_log(svc_ctx, SVC_LOG_ERROR,
+ "layer bitrates incorrect: \n"
+ "1) spatial layer bitrates should sum up to target \n"
+ "2) temporal layer bitrates should be increasing within \n"
+ "a spatial layer \n");
+ return VPX_CODEC_INVALID_PARAM;
+ }
+
+ if (svc_ctx->temporal_layers > 1) {+ int i;
+ for (i = 0; i < svc_ctx->temporal_layers; ++i) {+ enc_cfg->ts_target_bitrate[i] =
+ enc_cfg->rc_target_bitrate / svc_ctx->temporal_layers;
+ enc_cfg->ts_rate_decimator[i] = 1 << (svc_ctx->temporal_layers - 1 - i);
+ }
+ }
+
+ if (svc_ctx->threads) enc_cfg->g_threads = svc_ctx->threads;
+
+ // Modify encoder configuration
+ enc_cfg->ss_number_layers = svc_ctx->spatial_layers;
+ enc_cfg->ts_number_layers = svc_ctx->temporal_layers;
+
+ if (enc_cfg->rc_end_usage == VPX_CBR) {+ enc_cfg->rc_resize_allowed = 0;
+ enc_cfg->rc_min_quantizer = 2;
+ enc_cfg->rc_max_quantizer = 56;
+ enc_cfg->rc_undershoot_pct = 50;
+ enc_cfg->rc_overshoot_pct = 50;
+ enc_cfg->rc_buf_initial_sz = 500;
+ enc_cfg->rc_buf_optimal_sz = 600;
+ enc_cfg->rc_buf_sz = 1000;
+ }
+
+ for (tl = 0; tl < svc_ctx->temporal_layers; ++tl) {+ for (sl = 0; sl < svc_ctx->spatial_layers; ++sl) {+ i = sl * svc_ctx->temporal_layers + tl;
+ if (enc_cfg->rc_end_usage == VPX_CBR &&
+ enc_cfg->g_pass == VPX_RC_ONE_PASS) {+ si->svc_params.max_quantizers[i] = enc_cfg->rc_max_quantizer;
+ si->svc_params.min_quantizers[i] = enc_cfg->rc_min_quantizer;
+ }
+ }
+ }
+
+ if (enc_cfg->g_error_resilient == 0 && si->use_multiple_frame_contexts == 0)
+ enc_cfg->g_error_resilient = 1;
+
+ // Initialize codec
+ res = vpx_codec_enc_init(codec_ctx, iface, enc_cfg, VPX_CODEC_USE_PSNR);
+ if (res != VPX_CODEC_OK) {+ svc_log(svc_ctx, SVC_LOG_ERROR, "svc_enc_init error\n");
+ return res;
+ }
+ if (svc_ctx->spatial_layers > 1 || svc_ctx->temporal_layers > 1) {+ vpx_codec_control(codec_ctx, VP9E_SET_SVC, 1);
+ vpx_codec_control(codec_ctx, VP9E_SET_SVC_PARAMETERS, &si->svc_params);
+ }
+ return VPX_CODEC_OK;
+}
+
+/**
+ * Encode a frame into multiple layers
+ * Create a superframe containing the individual 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) {+ vpx_codec_err_t res;
+ vpx_codec_iter_t iter;
+ const vpx_codec_cx_pkt_t *cx_pkt;
+ SvcInternal_t *const si = get_svc_internal(svc_ctx);
+ if (svc_ctx == NULL || codec_ctx == NULL || si == NULL) {+ return VPX_CODEC_INVALID_PARAM;
+ }
+
+ res =
+ vpx_codec_encode(codec_ctx, rawimg, pts, (uint32_t)duration, 0, deadline);
+ if (res != VPX_CODEC_OK) {+ return res;
+ }
+ // save compressed data
+ iter = NULL;
+ while ((cx_pkt = vpx_codec_get_cx_data(codec_ctx, &iter))) {+ switch (cx_pkt->kind) {+ case VPX_CODEC_PSNR_PKT: {+ }
+ ++si->psnr_pkt_received;
+ break;
+ default: { break; }+ }
+ }
+
+ return VPX_CODEC_OK;
+}
+
+static double calc_psnr(double d) {+ if (d == 0) return 100;
+ return -10.0 * log(d) / log(10.0);
+}
+
+// dump accumulated statistics and reset accumulated values
+void vpx_svc_dump_statistics(SvcContext *svc_ctx) {+ int number_of_frames;
+ int i, j;
+ uint32_t bytes_total = 0;
+ double scale[COMPONENTS];
+ double psnr[COMPONENTS];
+ double mse[COMPONENTS];
+ double y_scale;
+
+ SvcInternal_t *const si = get_svc_internal(svc_ctx);
+ if (svc_ctx == NULL || si == NULL) return;
+
+ number_of_frames = si->psnr_pkt_received;
+ if (number_of_frames <= 0) return;
+
+ svc_log(svc_ctx, SVC_LOG_INFO, "\n");
+ for (i = 0; i < svc_ctx->spatial_layers; ++i) {+ svc_log(svc_ctx, SVC_LOG_INFO,
+ "Layer %d Average PSNR=[%2.3f, %2.3f, %2.3f, %2.3f], Bytes=[%u]\n",
+ i, (double)si->psnr_sum[i][0] / number_of_frames,
+ (double)si->psnr_sum[i][1] / number_of_frames,
+ (double)si->psnr_sum[i][2] / number_of_frames,
+ (double)si->psnr_sum[i][3] / number_of_frames, si->bytes_sum[i]);
+ // the following psnr calculation is deduced from ffmpeg.c#print_report
+ y_scale = si->width * si->height * 255.0 * 255.0 * number_of_frames;
+ scale[1] = y_scale;
+ scale[2] = scale[3] = y_scale / 4; // U or V
+ scale[0] = y_scale * 1.5; // total
+
+ for (j = 0; j < COMPONENTS; j++) {+ psnr[j] = calc_psnr(si->sse_sum[i][j] / scale[j]);
+ mse[j] = si->sse_sum[i][j] * 255.0 * 255.0 / scale[j];
+ }
+ svc_log(svc_ctx, SVC_LOG_INFO,
+ "Layer %d Overall PSNR=[%2.3f, %2.3f, %2.3f, %2.3f]\n", i, psnr[0],
+ psnr[1], psnr[2], psnr[3]);
+ svc_log(svc_ctx, SVC_LOG_INFO,
+ "Layer %d Overall MSE=[%2.3f, %2.3f, %2.3f, %2.3f]\n", i, mse[0],
+ mse[1], mse[2], mse[3]);
+
+ bytes_total += si->bytes_sum[i];
+ // Clear sums for next time.
+ si->bytes_sum[i] = 0;
+ for (j = 0; j < COMPONENTS; ++j) {+ si->psnr_sum[i][j] = 0;
+ si->sse_sum[i][j] = 0;
+ }
+ }
+
+ // only display statistics once
+ si->psnr_pkt_received = 0;
+
+ svc_log(svc_ctx, SVC_LOG_INFO, "Total Bytes=[%u]\n", bytes_total);
+}
+
+void vpx_svc_release(SvcContext *svc_ctx) {+ SvcInternal_t *si;
+ if (svc_ctx == NULL) return;
+ // do not use get_svc_internal as it will unnecessarily allocate an
+ // SvcInternal_t if it was not already allocated
+ si = (SvcInternal_t *)svc_ctx->internal;
+ if (si != NULL) {+ free(si);
+ svc_ctx->internal = NULL;
+ }
+}
--- a/examples/vp9_spatial_svc_encoder.c
+++ b/examples/vp9_spatial_svc_encoder.c
@@ -25,7 +25,7 @@
#include "../video_writer.h"
#include "../vpx_ports/vpx_timer.h"
-#include "vpx/svc_context.h"
+#include "./svc_context.h"
#include "vpx/vp8cx.h"
#include "vpx/vpx_encoder.h"
#include "../vpxstats.h"
--- a/libs.mk
+++ b/libs.mk
@@ -88,7 +88,6 @@
CODEC_EXPORTS-yes += $(addprefix $(VP9_PREFIX),$(VP9_CX_EXPORTS))
CODEC_SRCS-yes += $(VP9_PREFIX)vp9cx.mk vpx/vp8.h vpx/vp8cx.h
INSTALL-LIBS-yes += include/vpx/vp8.h include/vpx/vp8cx.h
- INSTALL-LIBS-yes += include/vpx/svc_context.h
INSTALL_MAPS += include/vpx/% $(SRC_PATH_BARE)/$(VP9_PREFIX)/%
CODEC_DOC_SRCS += vpx/vp8.h vpx/vp8cx.h
CODEC_DOC_SECTIONS += vp9 vp9_encoder
--- a/vpx/src/svc_encodeframe.c
+++ /dev/null
@@ -1,633 +1,0 @@
-/*
- * 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.
- */
-
-/**
- * @file
- * VP9 SVC encoding support via libvpx
- */
-
-#include <assert.h>
-#include <math.h>
-#include <limits.h>
-#include <stdarg.h>
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-#define VPX_DISABLE_CTRL_TYPECHECKS 1
-#include "./vpx_config.h"
-#include "vpx/svc_context.h"
-#include "vpx/vp8cx.h"
-#include "vpx/vpx_encoder.h"
-#include "vpx_mem/vpx_mem.h"
-#include "vp9/common/vp9_onyxc_int.h"
-
-#ifdef __MINGW32__
-#define strtok_r strtok_s
-#ifndef MINGW_HAS_SECURE_API
-// proto from /usr/x86_64-w64-mingw32/include/sec_api/string_s.h
-_CRTIMP char *__cdecl strtok_s(char *str, const char *delim, char **context);
-#endif /* MINGW_HAS_SECURE_API */
-#endif /* __MINGW32__ */
-
-#ifdef _MSC_VER
-#define strdup _strdup
-#define strtok_r strtok_s
-#endif
-
-#define SVC_REFERENCE_FRAMES 8
-#define SUPERFRAME_SLOTS (8)
-#define SUPERFRAME_BUFFER_SIZE (SUPERFRAME_SLOTS * sizeof(uint32_t) + 2)
-
-#define MAX_QUANTIZER 63
-
-static const int DEFAULT_SCALE_FACTORS_NUM[VPX_SS_MAX_LAYERS] = { 4, 5, 7, 11,- 16 };
-
-static const int DEFAULT_SCALE_FACTORS_DEN[VPX_SS_MAX_LAYERS] = { 16, 16, 16,- 16, 16 };
-
-static const int DEFAULT_SCALE_FACTORS_NUM_2x[VPX_SS_MAX_LAYERS] = { 1, 2, 4 };-
-static const int DEFAULT_SCALE_FACTORS_DEN_2x[VPX_SS_MAX_LAYERS] = { 4, 4, 4 };-
-typedef enum {- QUANTIZER = 0,
- BITRATE,
- SCALE_FACTOR,
- AUTO_ALT_REF,
- ALL_OPTION_TYPES
-} LAYER_OPTION_TYPE;
-
-static const int option_max_values[ALL_OPTION_TYPES] = { 63, INT_MAX, INT_MAX,- 1 };
-
-static const int option_min_values[ALL_OPTION_TYPES] = { 0, 0, 1, 0 };-
-// One encoded frame
-typedef struct FrameData {- void *buf; // compressed data buffer
- size_t size; // length of compressed data
- vpx_codec_frame_flags_t flags; /**< flags for this frame */
- struct FrameData *next;
-} FrameData;
-
-static SvcInternal_t *get_svc_internal(SvcContext *svc_ctx) {- if (svc_ctx == NULL) return NULL;
- if (svc_ctx->internal == NULL) {- SvcInternal_t *const si = (SvcInternal_t *)malloc(sizeof(*si));
- if (si != NULL) {- memset(si, 0, sizeof(*si));
- }
- svc_ctx->internal = si;
- }
- return (SvcInternal_t *)svc_ctx->internal;
-}
-
-static const SvcInternal_t *get_const_svc_internal(const SvcContext *svc_ctx) {- if (svc_ctx == NULL) return NULL;
- return (const SvcInternal_t *)svc_ctx->internal;
-}
-
-static int svc_log(SvcContext *svc_ctx, SVC_LOG_LEVEL level, const char *fmt,
- ...) {- char buf[512];
- int retval = 0;
- va_list ap;
-
- if (level > svc_ctx->log_level) {- return retval;
- }
-
- va_start(ap, fmt);
- retval = vsnprintf(buf, sizeof(buf), fmt, ap);
- va_end(ap);
-
- printf("%s", buf);-
- return retval;
-}
-
-static vpx_codec_err_t extract_option(LAYER_OPTION_TYPE type, char *input,
- int *value0, int *value1) {- if (type == SCALE_FACTOR) {- *value0 = (int)strtol(input, &input, 10);
- if (*input++ != '/') return VPX_CODEC_INVALID_PARAM;
- *value1 = (int)strtol(input, &input, 10);
-
- if (*value0 < option_min_values[SCALE_FACTOR] ||
- *value1 < option_min_values[SCALE_FACTOR] ||
- *value0 > option_max_values[SCALE_FACTOR] ||
- *value1 > option_max_values[SCALE_FACTOR] ||
- *value0 > *value1) // num shouldn't be greater than den
- return VPX_CODEC_INVALID_PARAM;
- } else {- *value0 = atoi(input);
- if (*value0 < option_min_values[type] || *value0 > option_max_values[type])
- return VPX_CODEC_INVALID_PARAM;
- }
- return VPX_CODEC_OK;
-}
-
-static vpx_codec_err_t parse_layer_options_from_string(SvcContext *svc_ctx,
- LAYER_OPTION_TYPE type,
- const char *input,
- int *option0,
- int *option1) {- int i;
- vpx_codec_err_t res = VPX_CODEC_OK;
- char *input_string;
- char *token;
- const char *delim = ",";
- char *save_ptr;
- int num_layers = svc_ctx->spatial_layers;
- if (type == BITRATE)
- num_layers = svc_ctx->spatial_layers * svc_ctx->temporal_layers;
-
- if (input == NULL || option0 == NULL ||
- (option1 == NULL && type == SCALE_FACTOR))
- return VPX_CODEC_INVALID_PARAM;
-
- input_string = strdup(input);
- token = strtok_r(input_string, delim, &save_ptr);
- for (i = 0; i < num_layers; ++i) {- if (token != NULL) {- res = extract_option(type, token, option0 + i, option1 + i);
- if (res != VPX_CODEC_OK) break;
- token = strtok_r(NULL, delim, &save_ptr);
- } else {- break;
- }
- }
- if (res == VPX_CODEC_OK && i != num_layers) {- svc_log(svc_ctx, SVC_LOG_ERROR,
- "svc: layer params type: %d %d values required, "
- "but only %d specified\n",
- type, num_layers, i);
- res = VPX_CODEC_INVALID_PARAM;
- }
- free(input_string);
- return res;
-}
-
-/**
- * Parse SVC encoding options
- * Format: encoding-mode=<svc_mode>,layers=<layer_count>
- * scale-factors=<n1>/<d1>,<n2>/<d2>,...
- * quantizers=<q1>,<q2>,...
- * svc_mode = [i|ip|alt_ip|gf]
- */
-static vpx_codec_err_t parse_options(SvcContext *svc_ctx, const char *options) {- char *input_string;
- char *option_name;
- char *option_value;
- char *input_ptr = NULL;
- SvcInternal_t *const si = get_svc_internal(svc_ctx);
- vpx_codec_err_t res = VPX_CODEC_OK;
- int i, alt_ref_enabled = 0;
-
- if (options == NULL) return VPX_CODEC_OK;
- input_string = strdup(options);
-
- // parse option name
- option_name = strtok_r(input_string, "=", &input_ptr);
- while (option_name != NULL) {- // parse option value
- option_value = strtok_r(NULL, " ", &input_ptr);
- if (option_value == NULL) {- svc_log(svc_ctx, SVC_LOG_ERROR, "option missing value: %s\n",
- option_name);
- res = VPX_CODEC_INVALID_PARAM;
- break;
- }
- if (strcmp("spatial-layers", option_name) == 0) {- svc_ctx->spatial_layers = atoi(option_value);
- } else if (strcmp("temporal-layers", option_name) == 0) {- svc_ctx->temporal_layers = atoi(option_value);
- } else if (strcmp("scale-factors", option_name) == 0) {- res = parse_layer_options_from_string(svc_ctx, SCALE_FACTOR, option_value,
- si->svc_params.scaling_factor_num,
- si->svc_params.scaling_factor_den);
- if (res != VPX_CODEC_OK) break;
- } else if (strcmp("max-quantizers", option_name) == 0) {- res =
- parse_layer_options_from_string(svc_ctx, QUANTIZER, option_value,
- si->svc_params.max_quantizers, NULL);
- if (res != VPX_CODEC_OK) break;
- } else if (strcmp("min-quantizers", option_name) == 0) {- res =
- parse_layer_options_from_string(svc_ctx, QUANTIZER, option_value,
- si->svc_params.min_quantizers, NULL);
- if (res != VPX_CODEC_OK) break;
- } else if (strcmp("auto-alt-refs", option_name) == 0) {- res = parse_layer_options_from_string(svc_ctx, AUTO_ALT_REF, option_value,
- si->enable_auto_alt_ref, NULL);
- if (res != VPX_CODEC_OK) break;
- } else if (strcmp("bitrates", option_name) == 0) {- res = parse_layer_options_from_string(svc_ctx, BITRATE, option_value,
- si->bitrates, NULL);
- if (res != VPX_CODEC_OK) break;
- } else if (strcmp("multi-frame-contexts", option_name) == 0) {- si->use_multiple_frame_contexts = atoi(option_value);
- } else {- svc_log(svc_ctx, SVC_LOG_ERROR, "invalid option: %s\n", option_name);
- res = VPX_CODEC_INVALID_PARAM;
- break;
- }
- option_name = strtok_r(NULL, "=", &input_ptr);
- }
- free(input_string);
-
- for (i = 0; i < svc_ctx->spatial_layers; ++i) {- if (si->svc_params.max_quantizers[i] > MAX_QUANTIZER ||
- si->svc_params.max_quantizers[i] < 0 ||
- si->svc_params.min_quantizers[i] > si->svc_params.max_quantizers[i] ||
- si->svc_params.min_quantizers[i] < 0)
- res = VPX_CODEC_INVALID_PARAM;
- }
-
- if (si->use_multiple_frame_contexts &&
- (svc_ctx->spatial_layers > 3 ||
- svc_ctx->spatial_layers * svc_ctx->temporal_layers > 4))
- res = VPX_CODEC_INVALID_PARAM;
-
- for (i = 0; i < svc_ctx->spatial_layers; ++i)
- alt_ref_enabled += si->enable_auto_alt_ref[i];
- if (alt_ref_enabled > REF_FRAMES - svc_ctx->spatial_layers) {- svc_log(svc_ctx, SVC_LOG_ERROR,
- "svc: auto alt ref: Maxinum %d(REF_FRAMES - layers) layers could"
- "enabled auto alt reference frame, but % layers are enabled\n",
- REF_FRAMES - svc_ctx->spatial_layers, alt_ref_enabled);
- res = VPX_CODEC_INVALID_PARAM;
- }
-
- return res;
-}
-
-vpx_codec_err_t vpx_svc_set_options(SvcContext *svc_ctx, const char *options) {- SvcInternal_t *const si = get_svc_internal(svc_ctx);
- if (svc_ctx == NULL || options == NULL || si == NULL) {- return VPX_CODEC_INVALID_PARAM;
- }
- strncpy(si->options, options, sizeof(si->options));
- si->options[sizeof(si->options) - 1] = '\0';
- return VPX_CODEC_OK;
-}
-
-vpx_codec_err_t assign_layer_bitrates(const SvcContext *svc_ctx,
- vpx_codec_enc_cfg_t *const enc_cfg) {- int i;
- const SvcInternal_t *const si = get_const_svc_internal(svc_ctx);
- int sl, tl, spatial_layer_target;
-
- if (svc_ctx->temporal_layering_mode != 0) {- if (si->bitrates[0] != 0) {- unsigned int total_bitrate = 0;
- for (sl = 0; sl < svc_ctx->spatial_layers; ++sl) {- total_bitrate += si->bitrates[sl * svc_ctx->temporal_layers +
- svc_ctx->temporal_layers - 1];
- for (tl = 0; tl < svc_ctx->temporal_layers; ++tl) {- enc_cfg->ss_target_bitrate[sl * svc_ctx->temporal_layers] +=
- (unsigned int)si->bitrates[sl * svc_ctx->temporal_layers + tl];
- enc_cfg->layer_target_bitrate[sl * svc_ctx->temporal_layers + tl] =
- si->bitrates[sl * svc_ctx->temporal_layers + tl];
- if (tl > 0 && (si->bitrates[sl * svc_ctx->temporal_layers + tl] <=
- si->bitrates[sl * svc_ctx->temporal_layers + tl - 1]))
- return VPX_CODEC_INVALID_PARAM;
- }
- }
- if (total_bitrate != enc_cfg->rc_target_bitrate)
- return VPX_CODEC_INVALID_PARAM;
- } else {- float total = 0;
- float alloc_ratio[VPX_MAX_LAYERS] = { 0 };-
- for (sl = 0; sl < svc_ctx->spatial_layers; ++sl) {- if (si->svc_params.scaling_factor_den[sl] > 0) {- alloc_ratio[sl] = (float)(pow(2, sl));
- total += alloc_ratio[sl];
- }
- }
-
- for (sl = 0; sl < svc_ctx->spatial_layers; ++sl) {- enc_cfg->ss_target_bitrate[sl] = spatial_layer_target =
- (unsigned int)(enc_cfg->rc_target_bitrate * alloc_ratio[sl] /
- total);
- if (svc_ctx->temporal_layering_mode == 3) {- enc_cfg->layer_target_bitrate[sl * svc_ctx->temporal_layers] =
- (spatial_layer_target * 6) / 10; // 60%
- enc_cfg->layer_target_bitrate[sl * svc_ctx->temporal_layers + 1] =
- (spatial_layer_target * 8) / 10; // 80%
- enc_cfg->layer_target_bitrate[sl * svc_ctx->temporal_layers + 2] =
- spatial_layer_target;
- } else if (svc_ctx->temporal_layering_mode == 2 ||
- svc_ctx->temporal_layering_mode == 1) {- enc_cfg->layer_target_bitrate[sl * svc_ctx->temporal_layers] =
- spatial_layer_target * 2 / 3;
- enc_cfg->layer_target_bitrate[sl * svc_ctx->temporal_layers + 1] =
- spatial_layer_target;
- } else {- // User should explicitly assign bitrates in this case.
- assert(0);
- }
- }
- }
- } else {- if (si->bitrates[0] != 0) {- unsigned int total_bitrate = 0;
- for (i = 0; i < svc_ctx->spatial_layers; ++i) {- enc_cfg->ss_target_bitrate[i] = (unsigned int)si->bitrates[i];
- enc_cfg->layer_target_bitrate[i] = (unsigned int)si->bitrates[i];
- total_bitrate += si->bitrates[i];
- }
- if (total_bitrate != enc_cfg->rc_target_bitrate)
- return VPX_CODEC_INVALID_PARAM;
- } else {- float total = 0;
- float alloc_ratio[VPX_MAX_LAYERS] = { 0 };-
- for (i = 0; i < svc_ctx->spatial_layers; ++i) {- if (si->svc_params.scaling_factor_den[i] > 0) {- alloc_ratio[i] = (float)(si->svc_params.scaling_factor_num[i] * 1.0 /
- si->svc_params.scaling_factor_den[i]);
-
- alloc_ratio[i] *= alloc_ratio[i];
- total += alloc_ratio[i];
- }
- }
- for (i = 0; i < VPX_SS_MAX_LAYERS; ++i) {- if (total > 0) {- enc_cfg->layer_target_bitrate[i] =
- (unsigned int)(enc_cfg->rc_target_bitrate * alloc_ratio[i] /
- total);
- }
- }
- }
- }
- return VPX_CODEC_OK;
-}
-
-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 *enc_cfg) {- vpx_codec_err_t res;
- int i, sl, tl;
- SvcInternal_t *const si = get_svc_internal(svc_ctx);
- if (svc_ctx == NULL || codec_ctx == NULL || iface == NULL ||
- enc_cfg == NULL) {- return VPX_CODEC_INVALID_PARAM;
- }
- if (si == NULL) return VPX_CODEC_MEM_ERROR;
-
- si->codec_ctx = codec_ctx;
-
- si->width = enc_cfg->g_w;
- si->height = enc_cfg->g_h;
-
- si->kf_dist = enc_cfg->kf_max_dist;
-
- if (svc_ctx->spatial_layers == 0)
- svc_ctx->spatial_layers = VPX_SS_DEFAULT_LAYERS;
- if (svc_ctx->spatial_layers < 1 ||
- svc_ctx->spatial_layers > VPX_SS_MAX_LAYERS) {- svc_log(svc_ctx, SVC_LOG_ERROR, "spatial layers: invalid value: %d\n",
- svc_ctx->spatial_layers);
- return VPX_CODEC_INVALID_PARAM;
- }
-
- // Note: temporal_layering_mode only applies to one-pass CBR
- // si->svc_params.temporal_layering_mode = svc_ctx->temporal_layering_mode;
- if (svc_ctx->temporal_layering_mode == 3) {- svc_ctx->temporal_layers = 3;
- } else if (svc_ctx->temporal_layering_mode == 2 ||
- svc_ctx->temporal_layering_mode == 1) {- svc_ctx->temporal_layers = 2;
- }
-
- for (sl = 0; sl < VPX_SS_MAX_LAYERS; ++sl) {- si->svc_params.scaling_factor_num[sl] = DEFAULT_SCALE_FACTORS_NUM[sl];
- si->svc_params.scaling_factor_den[sl] = DEFAULT_SCALE_FACTORS_DEN[sl];
- si->svc_params.speed_per_layer[sl] = svc_ctx->speed;
- }
- if (enc_cfg->rc_end_usage == VPX_CBR && enc_cfg->g_pass == VPX_RC_ONE_PASS &&
- svc_ctx->spatial_layers <= 3) {- for (sl = 0; sl < svc_ctx->spatial_layers; ++sl) {- int sl2 = (svc_ctx->spatial_layers == 2) ? sl + 1 : sl;
- si->svc_params.scaling_factor_num[sl] = DEFAULT_SCALE_FACTORS_NUM_2x[sl2];
- si->svc_params.scaling_factor_den[sl] = DEFAULT_SCALE_FACTORS_DEN_2x[sl2];
- }
- if (svc_ctx->spatial_layers == 1) {- si->svc_params.scaling_factor_num[0] = 1;
- si->svc_params.scaling_factor_den[0] = 1;
- }
- }
- for (tl = 0; tl < svc_ctx->temporal_layers; ++tl) {- for (sl = 0; sl < svc_ctx->spatial_layers; ++sl) {- i = sl * svc_ctx->temporal_layers + tl;
- si->svc_params.max_quantizers[i] = MAX_QUANTIZER;
- si->svc_params.min_quantizers[i] = 0;
- if (enc_cfg->rc_end_usage == VPX_CBR &&
- enc_cfg->g_pass == VPX_RC_ONE_PASS) {- si->svc_params.max_quantizers[i] = 56;
- si->svc_params.min_quantizers[i] = 2;
- }
- }
- }
-
- // Parse aggregate command line options. Options must start with
- // "layers=xx" then followed by other options
- res = parse_options(svc_ctx, si->options);
- if (res != VPX_CODEC_OK) return res;
-
- if (svc_ctx->spatial_layers < 1) svc_ctx->spatial_layers = 1;
- if (svc_ctx->spatial_layers > VPX_SS_MAX_LAYERS)
- svc_ctx->spatial_layers = VPX_SS_MAX_LAYERS;
-
- if (svc_ctx->temporal_layers < 1) svc_ctx->temporal_layers = 1;
- if (svc_ctx->temporal_layers > VPX_TS_MAX_LAYERS)
- svc_ctx->temporal_layers = VPX_TS_MAX_LAYERS;
-
- if (svc_ctx->temporal_layers * svc_ctx->spatial_layers > VPX_MAX_LAYERS) {- svc_log(svc_ctx, SVC_LOG_ERROR,
- "spatial layers * temporal layers exceeds the maximum number of "
- "allowed layers of %d\n",
- svc_ctx->spatial_layers * svc_ctx->temporal_layers,
- (int)VPX_MAX_LAYERS);
- return VPX_CODEC_INVALID_PARAM;
- }
- res = assign_layer_bitrates(svc_ctx, enc_cfg);
- if (res != VPX_CODEC_OK) {- svc_log(svc_ctx, SVC_LOG_ERROR,
- "layer bitrates incorrect: \n"
- "1) spatial layer bitrates should sum up to target \n"
- "2) temporal layer bitrates should be increasing within \n"
- "a spatial layer \n");
- return VPX_CODEC_INVALID_PARAM;
- }
-
- if (svc_ctx->temporal_layers > 1) {- int i;
- for (i = 0; i < svc_ctx->temporal_layers; ++i) {- enc_cfg->ts_target_bitrate[i] =
- enc_cfg->rc_target_bitrate / svc_ctx->temporal_layers;
- enc_cfg->ts_rate_decimator[i] = 1 << (svc_ctx->temporal_layers - 1 - i);
- }
- }
-
- if (svc_ctx->threads) enc_cfg->g_threads = svc_ctx->threads;
-
- // Modify encoder configuration
- enc_cfg->ss_number_layers = svc_ctx->spatial_layers;
- enc_cfg->ts_number_layers = svc_ctx->temporal_layers;
-
- if (enc_cfg->rc_end_usage == VPX_CBR) {- enc_cfg->rc_resize_allowed = 0;
- enc_cfg->rc_min_quantizer = 2;
- enc_cfg->rc_max_quantizer = 56;
- enc_cfg->rc_undershoot_pct = 50;
- enc_cfg->rc_overshoot_pct = 50;
- enc_cfg->rc_buf_initial_sz = 500;
- enc_cfg->rc_buf_optimal_sz = 600;
- enc_cfg->rc_buf_sz = 1000;
- }
-
- for (tl = 0; tl < svc_ctx->temporal_layers; ++tl) {- for (sl = 0; sl < svc_ctx->spatial_layers; ++sl) {- i = sl * svc_ctx->temporal_layers + tl;
- if (enc_cfg->rc_end_usage == VPX_CBR &&
- enc_cfg->g_pass == VPX_RC_ONE_PASS) {- si->svc_params.max_quantizers[i] = enc_cfg->rc_max_quantizer;
- si->svc_params.min_quantizers[i] = enc_cfg->rc_min_quantizer;
- }
- }
- }
-
- if (enc_cfg->g_error_resilient == 0 && si->use_multiple_frame_contexts == 0)
- enc_cfg->g_error_resilient = 1;
-
- // Initialize codec
- res = vpx_codec_enc_init(codec_ctx, iface, enc_cfg, VPX_CODEC_USE_PSNR);
- if (res != VPX_CODEC_OK) {- svc_log(svc_ctx, SVC_LOG_ERROR, "svc_enc_init error\n");
- return res;
- }
- if (svc_ctx->spatial_layers > 1 || svc_ctx->temporal_layers > 1) {- vpx_codec_control(codec_ctx, VP9E_SET_SVC, 1);
- vpx_codec_control(codec_ctx, VP9E_SET_SVC_PARAMETERS, &si->svc_params);
- }
- return VPX_CODEC_OK;
-}
-
-/**
- * Encode a frame into multiple layers
- * Create a superframe containing the individual 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) {- vpx_codec_err_t res;
- vpx_codec_iter_t iter;
- const vpx_codec_cx_pkt_t *cx_pkt;
- SvcInternal_t *const si = get_svc_internal(svc_ctx);
- if (svc_ctx == NULL || codec_ctx == NULL || si == NULL) {- return VPX_CODEC_INVALID_PARAM;
- }
-
- res =
- vpx_codec_encode(codec_ctx, rawimg, pts, (uint32_t)duration, 0, deadline);
- if (res != VPX_CODEC_OK) {- return res;
- }
- // save compressed data
- iter = NULL;
- while ((cx_pkt = vpx_codec_get_cx_data(codec_ctx, &iter))) {- switch (cx_pkt->kind) {- case VPX_CODEC_PSNR_PKT: {- }
- ++si->psnr_pkt_received;
- break;
- default: { break; }- }
- }
-
- return VPX_CODEC_OK;
-}
-
-static double calc_psnr(double d) {- if (d == 0) return 100;
- return -10.0 * log(d) / log(10.0);
-}
-
-// dump accumulated statistics and reset accumulated values
-void vpx_svc_dump_statistics(SvcContext *svc_ctx) {- int number_of_frames;
- int i, j;
- uint32_t bytes_total = 0;
- double scale[COMPONENTS];
- double psnr[COMPONENTS];
- double mse[COMPONENTS];
- double y_scale;
-
- SvcInternal_t *const si = get_svc_internal(svc_ctx);
- if (svc_ctx == NULL || si == NULL) return;
-
- number_of_frames = si->psnr_pkt_received;
- if (number_of_frames <= 0) return;
-
- svc_log(svc_ctx, SVC_LOG_INFO, "\n");
- for (i = 0; i < svc_ctx->spatial_layers; ++i) {- svc_log(svc_ctx, SVC_LOG_INFO,
- "Layer %d Average PSNR=[%2.3f, %2.3f, %2.3f, %2.3f], Bytes=[%u]\n",
- i, (double)si->psnr_sum[i][0] / number_of_frames,
- (double)si->psnr_sum[i][1] / number_of_frames,
- (double)si->psnr_sum[i][2] / number_of_frames,
- (double)si->psnr_sum[i][3] / number_of_frames, si->bytes_sum[i]);
- // the following psnr calculation is deduced from ffmpeg.c#print_report
- y_scale = si->width * si->height * 255.0 * 255.0 * number_of_frames;
- scale[1] = y_scale;
- scale[2] = scale[3] = y_scale / 4; // U or V
- scale[0] = y_scale * 1.5; // total
-
- for (j = 0; j < COMPONENTS; j++) {- psnr[j] = calc_psnr(si->sse_sum[i][j] / scale[j]);
- mse[j] = si->sse_sum[i][j] * 255.0 * 255.0 / scale[j];
- }
- svc_log(svc_ctx, SVC_LOG_INFO,
- "Layer %d Overall PSNR=[%2.3f, %2.3f, %2.3f, %2.3f]\n", i, psnr[0],
- psnr[1], psnr[2], psnr[3]);
- svc_log(svc_ctx, SVC_LOG_INFO,
- "Layer %d Overall MSE=[%2.3f, %2.3f, %2.3f, %2.3f]\n", i, mse[0],
- mse[1], mse[2], mse[3]);
-
- bytes_total += si->bytes_sum[i];
- // Clear sums for next time.
- si->bytes_sum[i] = 0;
- for (j = 0; j < COMPONENTS; ++j) {- si->psnr_sum[i][j] = 0;
- si->sse_sum[i][j] = 0;
- }
- }
-
- // only display statistics once
- si->psnr_pkt_received = 0;
-
- svc_log(svc_ctx, SVC_LOG_INFO, "Total Bytes=[%u]\n", bytes_total);
-}
-
-void vpx_svc_release(SvcContext *svc_ctx) {- SvcInternal_t *si;
- if (svc_ctx == NULL) return;
- // do not use get_svc_internal as it will unnecessarily allocate an
- // SvcInternal_t if it was not already allocated
- si = (SvcInternal_t *)svc_ctx->internal;
- if (si != NULL) {- free(si);
- svc_ctx->internal = NULL;
- }
-}
--- a/vpx/svc_context.h
+++ /dev/null
@@ -1,112 +1,0 @@
-/*
- * 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_SVC_CONTEXT_H_
-#define VPX_SVC_CONTEXT_H_
-
-#include "./vp8cx.h"
-#include "./vpx_encoder.h"
-
-#ifdef __cplusplus
-extern "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_SVC_CONTEXT_H_
--- a/vpx/vpx_codec.mk
+++ b/vpx/vpx_codec.mk
@@ -15,8 +15,6 @@
API_SRCS-$(CONFIG_VP8_ENCODER) += vp8cx.h
API_DOC_SRCS-$(CONFIG_VP8_ENCODER) += vp8.h
API_DOC_SRCS-$(CONFIG_VP8_ENCODER) += vp8cx.h
-API_SRCS-$(CONFIG_VP9_ENCODER) += src/svc_encodeframe.c
-API_SRCS-$(CONFIG_VP9_ENCODER) += svc_context.h
API_SRCS-$(CONFIG_VP8_DECODER) += vp8.h
API_SRCS-$(CONFIG_VP8_DECODER) += vp8dx.h