diff --git a/mythtv/libs/libmyth/audiooutputalsa.cpp b/mythtv/libs/libmyth/audiooutputalsa.cpp index 1a66dfe..cce3258 100644 --- a/mythtv/libs/libmyth/audiooutputalsa.cpp +++ b/mythtv/libs/libmyth/audiooutputalsa.cpp @@ -699,6 +699,9 @@ void AudioOutputALSA::SetupMixer(void) if (mixer_handle != NULL) CloseMixer(); + if (alsadevice.toLower() == "software") + return; + VERBOSE(VB_AUDIO, QString("Opening mixer %1").arg(device)); // TODO: This is opening card 0. Fix for case of multiple soundcards diff --git a/mythtv/libs/libmyth/audiooutputbase.cpp b/mythtv/libs/libmyth/audiooutputbase.cpp index 112f554..e9bdb2f 100644 --- a/mythtv/libs/libmyth/audiooutputbase.cpp +++ b/mythtv/libs/libmyth/audiooutputbase.cpp @@ -53,6 +53,7 @@ AudioOutputBase::AudioOutputBase(const AudioSettings &settings) : needs_upmix(false), surround_mode(FreeSurround::SurroundModePassive), old_audio_stretchfactor(1.0), + volume(80), blocking(false), @@ -269,6 +270,14 @@ void AudioOutputBase::Reconfigure(const AudioSettings &orig_settings) if(audio_passthru || audio_enc) // AC-3 output - soundcard expects a 2ch 48k stream audio_channels = 2; + + if (internal_vol && audio_enc && audio_reenc) + { + VERBOSE(VB_AUDIO, LOC + "Using software vol control for AC-3"); + SWVolume(true); + } + else + SWVolume(false); audio_bytes_per_sample = audio_channels * audio_bits / 8; source_audio_bytes_per_sample = source_audio_channels * audio_bits / 8; @@ -309,7 +318,11 @@ void AudioOutputBase::Reconfigure(const AudioSettings &orig_settings) VERBOSE(VB_AUDIO, "Aborting reconfigure"); return; } - + + // Only used for software volume + if (set_initial_vol && internal_vol) + volume = gContext->GetNumSetting("PCMMixerVolume", 100); + SyncVolume(); VERBOSE(VB_AUDIO, LOC + QString("Audio fragment size: %1") @@ -600,6 +613,62 @@ int AudioOutputBase::GetAudioBufferedTime(void) return audbuf_timecode - GetAudiotime(); } +void AudioOutputBase::SetSWVolume(int new_volume) +{ + volume = new_volume; + QString controlLabel = gContext->GetSetting("MixerControl", "PCM"); + controlLabel += "MixerVolume"; + gContext->SaveSetting(controlLabel, volume); +} + +int AudioOutputBase::GetSWVolume() +{ + return volume; +} + +template +void AudioOutputBase::_AdjustVolume(AudioDataType *buffer, int len, bool music) +{ + float g = volume / 100.0; + + // Should probably be logarithmic - this'll do + g *= g; + + // Add gain to AC-3 - try to ~ match PCM volume + if (audio_enc && audio_reenc) + g *= 1.8; + + // Music is relatively loud - ditto + else if (music) + g *= 0.4; + + if (g == 1.0) + return; + + for (int i = 0; i < (int)(len / sizeof(AudioDataType)); i++) + { + float s = static_cast(buffer[i]) * g / + static_cast(numeric_limits::max()); + if (s >= 1.0) + buffer[i] = numeric_limits::max(); + else if (s <= -1.0) + buffer[i] = numeric_limits::min(); + else + buffer[i] = static_cast + (s * numeric_limits::max()); + } +} + +void AudioOutputBase::AdjustVolume(void *buffer, int len, bool music) { + + if (audio_bits == 8) + _AdjustVolume((char *)buffer, len, music); + else if (audio_bits == 16) + _AdjustVolume((short *)buffer, len, music); + +} + + bool AudioOutputBase::AddSamples(char *buffers[], int samples, long long timecode) { @@ -943,6 +1012,20 @@ void AudioOutputBase::_AddSamples(void *buffer, bool interleaved, int samples, } + if (internal_vol && SWVolume()) + { + int bdiff = kAudioRingBufferSize - waud; + bool music = (timecode < 1); + + if (bdiff < len) + { + AdjustVolume(audiobuffer + waud, bdiff, music); + AdjustVolume(audiobuffer, len - bdiff, music); + } + else + AdjustVolume(audiobuffer + waud, len, music); + } + // Encode to AC-3? if (encoder) { diff --git a/mythtv/libs/libmyth/audiooutputbase.h b/mythtv/libs/libmyth/audiooutputbase.h index 9a264a7..20f32ef 100644 --- a/mythtv/libs/libmyth/audiooutputbase.h +++ b/mythtv/libs/libmyth/audiooutputbase.h @@ -47,6 +47,9 @@ class AudioOutputBase : public AudioOutput, public QThread virtual void Reset(void); + void SetSWVolume(int new_volume); + int GetSWVolume(void); + // timecode is in milliseconds. virtual bool AddSamples(char *buffer, int samples, long long timecode); virtual bool AddSamples(char *buffers[], int samples, long long timecode); @@ -150,6 +153,11 @@ class AudioOutputBase : public AudioOutput, public QThread int src_quality; private: + // software volume + template + void _AdjustVolume(AudioDataType *buffer, int len, bool music); + void AdjustVolume(void *buffer, int len, bool music); + // resampler bool need_resampler; SRC_STATE *src_ctx; @@ -166,6 +174,7 @@ class AudioOutputBase : public AudioOutput, public QThread int surround_mode; bool allow_ac3_passthru; float old_audio_stretchfactor; + int volume; bool blocking; // do AddSamples calls block? diff --git a/mythtv/libs/libmyth/audiooutputoss.cpp b/mythtv/libs/libmyth/audiooutputoss.cpp index a18f147..348a60f 100644 --- a/mythtv/libs/libmyth/audiooutputoss.cpp +++ b/mythtv/libs/libmyth/audiooutputoss.cpp @@ -287,6 +287,8 @@ void AudioOutputOSS::VolumeInit() int volume = 0; QString device = gContext->GetSetting("MixerDevice", "/dev/mixer"); + if (device.toLower() == "software") + return; QByteArray dev = device.toAscii(); mixerfd = open(dev.constData(), O_RDONLY); diff --git a/mythtv/libs/libmyth/volumebase.cpp b/mythtv/libs/libmyth/volumebase.cpp index d1f1fb0..be28940 100644 --- a/mythtv/libs/libmyth/volumebase.cpp +++ b/mythtv/libs/libmyth/volumebase.cpp @@ -10,6 +10,20 @@ VolumeBase::VolumeBase() : internal_vol(false), volume(80), current_mute_state(kMuteOff) { + swvol = swvol_setting = + (gContext->GetSetting("MixerDevice", "default").toLower() == "software"); +} + +bool VolumeBase::SWVolume(void) +{ + return swvol; +} + +void VolumeBase::SWVolume(bool set) +{ + if (swvol_setting) + return; + swvol = set; } uint VolumeBase::GetCurrentVolume(void) const @@ -80,6 +94,12 @@ void VolumeBase::UpdateVolume(void) { new_volume = 0; } + + if (swvol) + { + SetSWVolume(new_volume); + return; + } // TODO: Avoid assumption that there are 2 channels! for (int i = 0; i < 2; i++) @@ -102,6 +122,9 @@ void VolumeBase::UpdateVolume(void) void VolumeBase::SyncVolume(void) { // Read the volume from the audio driver and setup our internal state to match - volume = GetVolumeChannel(0); + if (swvol) + volume = GetSWVolume(); + else + volume = GetVolumeChannel(0); } diff --git a/mythtv/libs/libmyth/volumebase.h b/mythtv/libs/libmyth/volumebase.h index 4257f0b..8c658da 100644 --- a/mythtv/libs/libmyth/volumebase.h +++ b/mythtv/libs/libmyth/volumebase.h @@ -20,6 +20,8 @@ class MPUBLIC VolumeBase VolumeBase(); virtual ~VolumeBase() {}; + void SWVolume(bool set); + bool SWVolume(void); virtual uint GetCurrentVolume(void) const; virtual void SetCurrentVolume(int value); virtual void AdjustCurrentVolume(int change); @@ -34,6 +36,8 @@ class MPUBLIC VolumeBase virtual int GetVolumeChannel(int channel) const = 0; // Returns 0-100 virtual void SetVolumeChannel(int channel, int volume) = 0; // range 0-100 for vol + virtual void SetSWVolume(int new_volume) = 0; + virtual int GetSWVolume(void) = 0; void UpdateVolume(void); void SyncVolume(void); @@ -44,6 +48,8 @@ class MPUBLIC VolumeBase int volume; MuteState current_mute_state; + bool swvol; + bool swvol_setting; }; diff --git a/mythtv/libs/libmythtv/avformatdecoder.cpp b/mythtv/libs/libmythtv/avformatdecoder.cpp index 50c2919..e963be9 100644 --- a/mythtv/libs/libmythtv/avformatdecoder.cpp +++ b/mythtv/libs/libmythtv/avformatdecoder.cpp @@ -427,6 +427,7 @@ AvFormatDecoder::AvFormatDecoder(NuppelVideoPlayer *parent, // Audio audioSamples(NULL), allow_ac3_passthru(false), allow_dts_passthru(false), + internal_vol(false), disable_passthru(false), max_channels(2), last_ac3_channels(0), dummy_frame(NULL), // DVD @@ -448,6 +449,7 @@ AvFormatDecoder::AvFormatDecoder(NuppelVideoPlayer *parent, allow_ac3_passthru = gContext->GetNumSetting("AC3PassThru", false); allow_dts_passthru = gContext->GetNumSetting("DTSPassThru", false); + internal_vol = gContext->GetNumSetting("MythControlsVolume", 0); max_channels = (uint) gContext->GetNumSetting("MaxChannels", 2); audioIn.sample_size = -32; // force SetupAudioStream to run once @@ -4129,9 +4131,10 @@ bool AvFormatDecoder::DoPassThrough(const AVCodecContext *ctx) if (ctx->codec_id == CODEC_ID_AC3) passthru = allow_ac3_passthru && - ctx->channels >= (int)max_channels; + ctx->channels >= (int)max_channels && + !internal_vol; else if (ctx->codec_id == CODEC_ID_DTS) - passthru = allow_dts_passthru; + passthru = allow_dts_passthru && !internal_vol; passthru &= !transcoding && !disable_passthru; // Don't know any cards that support spdif clocked at < 44100 diff --git a/mythtv/libs/libmythtv/avformatdecoder.h b/mythtv/libs/libmythtv/avformatdecoder.h index 57311b6..fb9cfe7 100644 --- a/mythtv/libs/libmythtv/avformatdecoder.h +++ b/mythtv/libs/libmythtv/avformatdecoder.h @@ -269,6 +269,7 @@ class AvFormatDecoder : public DecoderBase short int *audioSamples; bool allow_ac3_passthru; bool allow_dts_passthru; + bool internal_vol; bool disable_passthru; uint max_channels; uint last_ac3_channels; diff --git a/mythtv/programs/mythtranscode/transcode.cpp b/mythtv/programs/mythtranscode/transcode.cpp index f3b7f04..57d7280 100644 --- a/mythtv/programs/mythtranscode/transcode.cpp +++ b/mythtv/programs/mythtranscode/transcode.cpp @@ -227,6 +227,17 @@ class AudioReencodeBuffer : public AudioOutput // Do nothing return false; } + virtual void SetSWVolume(int new_volume) + { + // Do nothing + return; + } + + virtual int GetSWVolume(void) + { + // Do nothing + return 100; + } // These are pure virtual in AudioOutput, but we don't need them here virtual void bufferOutputData(bool){ return; }