blob: f3b1612b74f7c9b0e7b72a79ac0b3d49da522832 [file] [log] [blame]
// Copyright 2013 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "media/cast/cast_config.h"
namespace {
const float kDefaultCongestionControlBackOff = 0.875f;
enum {
// Minimum and Maximum VP8 quantizer in default configuration.
kDefaultMaxQp = 63,
kDefaultMinQp = 4,
kDefaultMaxCpuSaverQp = 25,
// Number of video buffers in default configuration (applies only to certain
// external codecs).
kDefaultNumberOfVideoBuffers = 1,
};
} // namespace
namespace media {
namespace cast {
// TODO(miu): Revisit code factoring of these structs. There are a number of
// common elements between them all, so it might be reasonable to only have one
// or two structs; or, at least a common base class.
// TODO(miu): Make sure all POD members are initialized by ctors. Policy
// decision: Reasonable defaults or use invalid placeholder values to expose
// unset members?
// TODO(miu): Provide IsValidConfig() functions?
// TODO(miu): Throughout the code, there is a lot of copy-and-paste of the same
// calculations based on these config values. So, why don't we add methods to
// these classes to centralize the logic?
VideoSenderConfig::VideoSenderConfig()
: ssrc(0),
receiver_ssrc(0),
max_playout_delay(
base::TimeDelta::FromMilliseconds(kDefaultRtpMaxDelayMs)),
rtp_payload_type(0),
use_external_encoder(false),
congestion_control_back_off(kDefaultCongestionControlBackOff),
max_bitrate(kDefaultMaxVideoKbps * 1000),
min_bitrate(kDefaultMinVideoKbps * 1000),
start_bitrate(kDefaultMaxVideoKbps * 1000),
max_qp(kDefaultMaxQp),
min_qp(kDefaultMinQp),
max_cpu_saver_qp(kDefaultMaxCpuSaverQp),
max_frame_rate(kDefaultMaxFrameRate),
max_number_of_video_buffers_used(kDefaultNumberOfVideoBuffers),
codec(CODEC_VIDEO_VP8),
number_of_encode_threads(1) {}
VideoSenderConfig::~VideoSenderConfig() {}
AudioSenderConfig::AudioSenderConfig()
: ssrc(0),
receiver_ssrc(0),
max_playout_delay(
base::TimeDelta::FromMilliseconds(kDefaultRtpMaxDelayMs)),
rtp_payload_type(0),
use_external_encoder(false),
frequency(0),
channels(0),
bitrate(kDefaultAudioEncoderBitrate),
codec(CODEC_AUDIO_OPUS) {}
AudioSenderConfig::~AudioSenderConfig() {}
FrameReceiverConfig::FrameReceiverConfig()
: receiver_ssrc(0),
sender_ssrc(0),
rtp_max_delay_ms(kDefaultRtpMaxDelayMs),
rtp_payload_type(0),
rtp_timebase(0),
channels(0),
target_frame_rate(0),
codec(CODEC_UNKNOWN) {}
FrameReceiverConfig::~FrameReceiverConfig() {}
} // namespace cast
} // namespace media