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/*
* Copyright (c) 2014 The WebRTC 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.
*/
#include "test/encoder_settings.h"
#include <algorithm>
#include "api/scoped_refptr.h"
#include "api/video_codecs/sdp_video_format.h"
#include "call/rtp_config.h"
#include "rtc_base/checks.h"
namespace webrtc {
namespace test {
const size_t DefaultVideoStreamFactory::kMaxNumberOfStreams;
const int DefaultVideoStreamFactory::kMaxBitratePerStream[] = {150000, 450000,
1500000};
const int DefaultVideoStreamFactory::kDefaultMinBitratePerStream[] = {
30000, 200000, 700000};
// static
std::vector<VideoStream> CreateVideoStreams(
int width,
int height,
const webrtc::VideoEncoderConfig& encoder_config) {
RTC_DCHECK(encoder_config.number_of_streams <=
DefaultVideoStreamFactory::kMaxNumberOfStreams);
std::vector<VideoStream> stream_settings(encoder_config.number_of_streams);
int bitrate_left_bps = 0;
if (encoder_config.max_bitrate_bps > 0) {
bitrate_left_bps = encoder_config.max_bitrate_bps;
} else {
for (size_t stream_num = 0; stream_num < encoder_config.number_of_streams;
++stream_num) {
bitrate_left_bps +=
DefaultVideoStreamFactory::kMaxBitratePerStream[stream_num];
}
}
for (size_t i = 0; i < encoder_config.number_of_streams; ++i) {
stream_settings[i].width =
(i + 1) * width / encoder_config.number_of_streams;
stream_settings[i].height =
(i + 1) * height / encoder_config.number_of_streams;
stream_settings[i].max_framerate = 30;
stream_settings[i].max_qp = 56;
stream_settings[i].min_bitrate_bps =
DefaultVideoStreamFactory::kDefaultMinBitratePerStream[i];
// Use configured values instead of default values if set.
const VideoStream stream = (i < encoder_config.simulcast_layers.size())
? encoder_config.simulcast_layers[i]
: VideoStream();
int max_bitrate_bps =
stream.max_bitrate_bps > 0
? stream.max_bitrate_bps
: DefaultVideoStreamFactory::kMaxBitratePerStream[i];
max_bitrate_bps = std::min(bitrate_left_bps, max_bitrate_bps);
int target_bitrate_bps = stream.target_bitrate_bps > 0
? stream.target_bitrate_bps
: max_bitrate_bps;
target_bitrate_bps = std::min(max_bitrate_bps, target_bitrate_bps);
if (stream.min_bitrate_bps > 0) {
RTC_DCHECK_LE(stream.min_bitrate_bps, target_bitrate_bps);
stream_settings[i].min_bitrate_bps = stream.min_bitrate_bps;
}
if (stream.max_framerate > 0) {
stream_settings[i].max_framerate = stream.max_framerate;
}
if (stream.num_temporal_layers) {
RTC_DCHECK_GE(*stream.num_temporal_layers, 1);
stream_settings[i].num_temporal_layers = stream.num_temporal_layers;
}
if (stream.scale_resolution_down_by >= 1.0) {
stream_settings[i].width = width / stream.scale_resolution_down_by;
stream_settings[i].height = height / stream.scale_resolution_down_by;
}
stream_settings[i].scalability_mode = stream.scalability_mode;
stream_settings[i].target_bitrate_bps = target_bitrate_bps;
stream_settings[i].max_bitrate_bps = max_bitrate_bps;
stream_settings[i].active =
encoder_config.number_of_streams == 1 || stream.active;
bitrate_left_bps -= stream_settings[i].target_bitrate_bps;
}
stream_settings[encoder_config.number_of_streams - 1].max_bitrate_bps +=
bitrate_left_bps;
stream_settings[0].bitrate_priority = encoder_config.bitrate_priority;
return stream_settings;
}
DefaultVideoStreamFactory::DefaultVideoStreamFactory() {}
std::vector<VideoStream> DefaultVideoStreamFactory::CreateEncoderStreams(
int frame_width,
int frame_height,
const webrtc::VideoEncoderConfig& encoder_config) {
return CreateVideoStreams(frame_width, frame_height, encoder_config);
}
void FillEncoderConfiguration(VideoCodecType codec_type,
size_t num_streams,
VideoEncoderConfig* configuration) {
RTC_DCHECK_LE(num_streams, DefaultVideoStreamFactory::kMaxNumberOfStreams);
configuration->codec_type = codec_type;
configuration->number_of_streams = num_streams;
configuration->video_stream_factory =
rtc::make_ref_counted<DefaultVideoStreamFactory>();
configuration->max_bitrate_bps = 0;
configuration->frame_drop_enabled = true;
configuration->simulcast_layers = std::vector<VideoStream>(num_streams);
for (size_t i = 0; i < num_streams; ++i) {
configuration->max_bitrate_bps +=
DefaultVideoStreamFactory::kMaxBitratePerStream[i];
}
}
VideoReceiveStreamInterface::Decoder CreateMatchingDecoder(
int payload_type,
const std::string& payload_name) {
VideoReceiveStreamInterface::Decoder decoder;
decoder.payload_type = payload_type;
decoder.video_format = SdpVideoFormat(payload_name);
return decoder;
}
VideoReceiveStreamInterface::Decoder CreateMatchingDecoder(
const VideoSendStream::Config& config) {
return CreateMatchingDecoder(config.rtp.payload_type,
config.rtp.payload_name);
}
} // namespace test
} // namespace webrtc
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