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PAPlayer.cpp
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PAPlayer.cpp
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/*
* Copyright (C) 2005-2008 Team XBMC
* http://www.xbmc.org
*
* This Program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2, or (at your option)
* any later version.
*
* This Program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with XBMC; see the file COPYING. If not, write to
* the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
* http://www.gnu.org/copyleft/gpl.html
*
*/
#include "threads/SystemClock.h"
#include "PAPlayer.h"
#include "CodecFactory.h"
#include "GUIInfoManager.h"
#include "guilib/AudioContext.h"
#include "Application.h"
#include "FileItem.h"
#include "settings/AdvancedSettings.h"
#include "settings/GUISettings.h"
#include "settings/Settings.h"
#include "music/tags/MusicInfoTag.h"
#include "../AudioRenderers/AudioRendererFactory.h"
#include "utils/TimeUtils.h"
#include "utils/log.h"
#include "utils/MathUtils.h"
#ifdef _LINUX
#define XBMC_SAMPLE_RATE 44100
#else
#define XBMC_SAMPLE_RATE 48000
#endif
#define VOLUME_FFWD_MUTE 900 // 9dB
#define FADE_TIME 2 * 2048.0f / XBMC_SAMPLE_RATE.0f // 2 packets
#define TIME_TO_CACHE_NEXT_FILE 5000L // 5 seconds
#define TIME_TO_CROSS_FADE 10000L // 10 seconds
// PAP: Psycho-acoustic Audio Player
// Supporting all open audio codec standards.
// First one being nullsoft's nsv audio decoder format
PAPlayer::PAPlayer(IPlayerCallback& callback) : IPlayer(callback)
{
m_bIsPlaying = false;
m_bPaused = false;
m_cachingNextFile = false;
m_currentlyCrossFading = false;
m_bQueueFailed = false;
m_currentDecoder = 0;
m_iSpeed = 1;
m_SeekTime=-1;
m_IsFFwdRewding = false;
m_timeOffset = 0;
for (int i=0; i<2; i++)
{
m_channelCount[i] = 0;
m_channelMap[i] = NULL;
m_sampleRate[i] = 0;
m_bitsPerSample[i] = 0;
m_pAudioDecoder[i] = NULL;
m_pcmBuffer[i] = NULL;
m_bufferPos[i] = 0;
m_Chunklen[i] = PACKET_SIZE;
}
m_currentStream = 0;
m_packet[0][0].packet = NULL;
m_packet[1][0].packet = NULL;
m_bytesSentOut = 0;
m_BytesPerSecond = 0;
m_resampleAudio = false;
m_visBufferLength = 0;
m_pCallback = NULL;
m_forceFadeToNext = false;
m_CacheLevel = 0;
m_LastCacheLevelCheck = 0;
m_currentFile = new CFileItem;
m_nextFile = new CFileItem;
}
PAPlayer::~PAPlayer()
{
CloseFileInternal(true);
delete m_currentFile;
delete m_nextFile;
}
void PAPlayer::OnExit()
{
}
bool PAPlayer::OpenFile(const CFileItem& file, const CPlayerOptions &options)
{
if (m_currentlyCrossFading) CloseFileInternal(false); //user seems to be in a hurry
m_crossFading = g_guiSettings.GetInt("musicplayer.crossfade");
//WASAPI doesn't support multiple streams, no crossfading for cdda, cd-reading goes mad and no crossfading for last.fm doesn't like two connections
if (file.IsCDDA() || file.IsLastFM() || g_guiSettings.GetString("audiooutput.audiodevice").find("wasapi:") != CStdString::npos) m_crossFading = 0;
if (m_crossFading && IsPlaying())
{
//do a short crossfade on trackskip
//set to max 2 seconds for these prev/next transitions
if (m_crossFading > 2) m_crossFading = 2;
//queue for crossfading
bool result = QueueNextFile(file, false);
if (result)
{
//crossfading value may be update by QueueNextFile when nr of channels changed
if (!m_crossFading) // swap to next track
m_decoder[m_currentDecoder].SetStatus(STATUS_ENDED);
else //force to fade to next track immediately
m_forceFadeToNext = true;
}
return result;
}
// normal opening of file, nothing playing or crossfading not enabled
// however no need to return to gui audio device
CloseFileInternal(false);
// always open the file using the current decoder
m_currentDecoder = 0;
if (!m_decoder[m_currentDecoder].Create(file, (__int64)(options.starttime * 1000), m_crossFading))
return false;
m_iSpeed = 1;
m_bPaused = false;
m_bStopPlaying = false;
m_bytesSentOut = 0;
CLog::Log(LOGINFO, "PAPlayer: Playing %s", file.GetPath().c_str());
m_timeOffset = (__int64)(options.starttime * 1000);
unsigned int channel, sampleRate, bitsPerSample;
m_decoder[m_currentDecoder].GetDataFormat(&channel, &sampleRate, &bitsPerSample);
if (!CreateStream(m_currentStream, channel, sampleRate, bitsPerSample))
{
m_decoder[m_currentDecoder].Destroy();
CLog::Log(LOGERROR, "PAPlayer::Unable to create audio stream");
}
*m_currentFile = file;
if (ThreadHandle() == NULL)
Create();
m_startEvent.Set();
m_bIsPlaying = true;
m_cachingNextFile = false;
m_currentlyCrossFading = false;
m_forceFadeToNext = false;
m_bQueueFailed = false;
m_decoder[m_currentDecoder].Start(); // start playback
return true;
}
void PAPlayer::UpdateCrossFadingTime(const CFileItem& file)
{
if ((m_crossFading = g_guiSettings.GetInt("musicplayer.crossfade")))
{
if (
m_crossFading &&
(
file.IsCDDA() ||
file.IsLastFM() ||
(
file.HasMusicInfoTag() && !g_guiSettings.GetBool("musicplayer.crossfadealbumtracks") &&
(m_currentFile->GetMusicInfoTag()->GetAlbum() != "") &&
(m_currentFile->GetMusicInfoTag()->GetAlbum() == file.GetMusicInfoTag()->GetAlbum()) &&
(m_currentFile->GetMusicInfoTag()->GetDiscNumber() == file.GetMusicInfoTag()->GetDiscNumber()) &&
(m_currentFile->GetMusicInfoTag()->GetTrackNumber() == file.GetMusicInfoTag()->GetTrackNumber() - 1)
)
|| g_guiSettings.GetString("audiooutput.audiodevice").find("wasapi:") != CStdString::npos
)
)
{
m_crossFading = 0;
}
}
}
void PAPlayer::OnNothingToQueueNotify()
{
//nothing to queue, stop playing
m_bQueueFailed = true;
}
bool PAPlayer::QueueNextFile(const CFileItem &file)
{
return QueueNextFile(file, true);
}
bool PAPlayer::QueueNextFile(const CFileItem &file, bool checkCrossFading)
{
if (IsPaused())
Pause();
if (file.GetPath() == m_currentFile->GetPath() &&
file.m_lStartOffset > 0 &&
file.m_lStartOffset == m_currentFile->m_lEndOffset)
{ // continuing on a .cue sheet item - return true to say we'll handle the transistion
*m_nextFile = file;
return true;
}
// check if we can handle this file at all
int decoder = 1 - m_currentDecoder;
int64_t seekOffset = (file.m_lStartOffset * 1000) / 75;
if (!m_decoder[decoder].Create(file, seekOffset, m_crossFading))
{
m_bQueueFailed = true;
return false;
}
// ok, we're good to go on queuing this one up
CLog::Log(LOGINFO, "PAPlayer: Queuing next file %s", file.GetPath().c_str());
m_bQueueFailed = false;
if (checkCrossFading)
{
UpdateCrossFadingTime(file);
}
unsigned int channels, samplerate, bitspersample;
m_decoder[decoder].GetDataFormat(&channels, &samplerate, &bitspersample);
// check the number of channels isn't changing (else we can't do crossfading)
if (m_crossFading && m_decoder[m_currentDecoder].GetChannels() == channels)
{ // crossfading - need to create a new stream
if (!CreateStream(1 - m_currentStream, channels, samplerate, bitspersample))
{
m_decoder[decoder].Destroy();
CLog::Log(LOGERROR, "PAPlayer::Unable to create audio stream");
}
}
else
{ // no crossfading if nr of channels is not the same
m_crossFading = 0;
}
*m_nextFile = file;
return true;
}
bool PAPlayer::CloseFileInternal(bool bAudioDevice /*= true*/)
{
if (IsPaused())
Pause();
m_bStopPlaying = true;
m_bStop = true;
m_visBufferLength = 0;
StopThread();
// kill both our streams if we need to
for (int i = 0; i < 2; i++)
{
m_decoder[i].Destroy();
if (bAudioDevice)
FreeStream(i);
}
m_currentFile->Reset();
m_nextFile->Reset();
if(bAudioDevice)
g_audioContext.SetActiveDevice(CAudioContext::DEFAULT_DEVICE);
else
FlushStreams();
return true;
}
void PAPlayer::FreeStream(int stream)
{
if (m_pAudioDecoder[stream])
{
DrainStream(stream);
delete m_pAudioDecoder[stream];
free(m_pcmBuffer[stream]);
}
m_pAudioDecoder[stream] = NULL;
m_pcmBuffer[stream] = NULL;
if (m_packet[stream][0].packet)
free(m_packet[stream][0].packet);
for (int i = 0; i < PACKET_COUNT; i++)
{
m_packet[stream][i].packet = NULL;
}
m_resampler[stream].DeInitialize();
}
void PAPlayer::DrainStream(int stream)
{
if(m_bStopPlaying || m_pAudioDecoder[1 - stream])
{
m_pAudioDecoder[stream]->Stop();
return;
}
DWORD silence = m_pAudioDecoder[stream]->GetChunkLen() - m_bufferPos[stream] % m_pAudioDecoder[stream]->GetChunkLen();
if(silence > 0 && m_bufferPos[stream] > 0)
{
CLog::Log(LOGDEBUG, "PAPlayer: Drain - adding %d bytes of silence, real pcmdata size: %d, chunk size: %d", silence, m_bufferPos[stream], m_pAudioDecoder[stream]->GetChunkLen());
memset(m_pcmBuffer[stream] + m_bufferPos[stream], 0, silence);
m_bufferPos[stream] += silence;
}
DWORD added = 0;
while(m_bufferPos[stream] - added >= m_pAudioDecoder[stream]->GetChunkLen())
{
added += m_pAudioDecoder[stream]->AddPackets(m_pcmBuffer[stream] + added, m_bufferPos[stream] - added);
Sleep(1);
}
m_bufferPos[stream] = 0;
m_pAudioDecoder[stream]->WaitCompletion();
}
bool PAPlayer::CreateStream(int num, unsigned int channels, unsigned int samplerate, unsigned int bitspersample, CStdString codec)
{
unsigned int outputSampleRate = (channels <= 2 && g_advancedSettings.m_musicResample) ? g_advancedSettings.m_musicResample : samplerate;
if (m_pAudioDecoder[num] != NULL && m_channelCount[num] == channels && m_sampleRate[num] == outputSampleRate /* && m_bitsPerSample[num] == bitspersample */)
{
CLog::Log(LOGDEBUG, "PAPlayer: Using existing audio renderer");
}
else
{
FreeStream(num);
CLog::Log(LOGDEBUG, "PAPlayer: Creating new audio renderer");
m_bitsPerSample[num] = 16;
m_sampleRate[num] = outputSampleRate;
m_channelCount[num] = channels;
m_channelMap[num] = NULL;
m_BytesPerSecond = (m_bitsPerSample[num] / 8)* outputSampleRate * channels;
/* Open the device */
m_pAudioDecoder[num] = CAudioRendererFactory::Create(
m_pCallback , //pCallback
m_channelCount [num], //iChannels
m_channelMap [num], //channelMap
m_sampleRate [num], //uiSamplesPerSec
m_bitsPerSample[num], //uiBitsPerSample
false , //bResample
true , //bIsMusic
IAudioRenderer::ENCODED_NONE //bPassthrough
);
if (!m_pAudioDecoder[num]) return false;
m_pcmBuffer[num] = (unsigned char*)malloc((m_pAudioDecoder[num]->GetChunkLen() + PACKET_SIZE));
m_bufferPos[num] = 0;
m_latency[num] = m_pAudioDecoder[num]->GetDelay();
m_Chunklen[num] = std::max(PACKET_SIZE, (int)m_pAudioDecoder[num]->GetChunkLen());
m_packet[num][0].packet = (BYTE*)malloc(PACKET_SIZE * PACKET_COUNT);
for (int i = 1; i < PACKET_COUNT ; i++)
m_packet[num][i].packet = m_packet[num][i - 1].packet + PACKET_SIZE;
}
// set initial volume
SetStreamVolume(num, g_settings.m_nVolumeLevel);
m_resampler[num].InitConverter(samplerate, bitspersample, channels, outputSampleRate, m_bitsPerSample[num], PACKET_SIZE);
// TODO: How do we best handle the callback, given that our samplerate etc. may be
// changing at this point?
// fire off our init to our callback
if (m_pCallback)
m_pCallback->OnInitialize(channels, outputSampleRate, m_bitsPerSample[num]);
return true;
}
void PAPlayer::Pause()
{
CLog::Log(LOGDEBUG,"PAPlayer: pause m_bplaying: %d", m_bIsPlaying);
if (!m_bIsPlaying || !m_pAudioDecoder)
return ;
m_bPaused = !m_bPaused;
if (m_bPaused)
{
if (m_pAudioDecoder[m_currentStream])
m_pAudioDecoder[m_currentStream]->Pause();
if (m_currentlyCrossFading && m_pAudioDecoder[1 - m_currentStream])
m_pAudioDecoder[1 - m_currentStream]->Pause();
m_callback.OnPlayBackPaused();
CLog::Log(LOGDEBUG, "PAPlayer: Playback paused");
}
else
{
if (m_pAudioDecoder[m_currentStream])
m_pAudioDecoder[m_currentStream]->Resume();
if (m_currentlyCrossFading && m_pAudioDecoder[1 - m_currentStream])
m_pAudioDecoder[1 - m_currentStream]->Resume();
m_callback.OnPlayBackResumed();
CLog::Log(LOGDEBUG, "PAPlayer: Playback resumed");
}
}
void PAPlayer::SetVolume(long nVolume)
{
if (m_pAudioDecoder[m_currentStream])
m_pAudioDecoder[m_currentStream]->SetCurrentVolume(nVolume);
}
void PAPlayer::SetDynamicRangeCompression(long drc)
{
// TODO: Add volume amplification
CLog::Log(LOGDEBUG,"PAPlayer::SetDynamicRangeCompression - drc: %lu", drc);
}
void PAPlayer::Process()
{
CLog::Log(LOGDEBUG, "PAPlayer: Thread started");
if (m_startEvent.WaitMSec(100))
{
m_startEvent.Reset();
do
{
if (!m_bPaused)
{
if (!ProcessPAP())
break;
}
else
{
Sleep(100);
}
}
while (!m_bStopPlaying && m_bIsPlaying && !m_bStop);
CLog::Log(LOGINFO, "PAPlayer: End of playback reached");
m_bIsPlaying = false;
if (!m_bStopPlaying && !m_bStop)
m_callback.OnPlayBackEnded();
else
m_callback.OnPlayBackStopped();
}
CLog::Log(LOGDEBUG, "PAPlayer: Thread end");
}
void PAPlayer::ToFFRW(int iSpeed)
{
m_iSpeed = iSpeed;
m_callback.OnPlayBackSpeedChanged(iSpeed);
if (iSpeed == 1)
{
m_callback.OnPlayBackResumed();
CLog::Log(LOGDEBUG, "PAPlayer: Playback resumed");
}
}
void PAPlayer::UpdateCacheLevel()
{
//check cachelevel every .5 seconds
if ((XbmcThreads::SystemClockMillis() - m_LastCacheLevelCheck) > 500)
{
ICodec* codec = m_decoder[m_currentDecoder].GetCodec();
if (codec)
{
m_CacheLevel = codec->GetCacheLevel();
m_LastCacheLevelCheck = XbmcThreads::SystemClockMillis();
//CLog::Log(LOGDEBUG,"Cachelevel: %i%%", m_CacheLevel);
}
}
}
bool PAPlayer::ProcessPAP()
{
/*
* Here's what we should be doing in each player loop:
*
* 1. Run DoWork() on our audio device to actually output audio.
*
* 2. Pass our current buffer to the audio device to see if it wants anything,
* and if so, reduce our buffer size accordingly.
*
* 3. Check whether we have space in our buffer for more data, and if so,
* read some more in.
*
* 4. Check for end of file and return false if we reach it.
*
* 5. Perform any seeking and ffwd/rewding as necessary.
*
* 6. If we don't do anything in 2...5, we can take a breather and break out for sleeping.
*/
while (true)
{
if (m_bStop) return false;
// Check for .cue sheet item end
if (m_currentFile->m_lEndOffset && GetTime() >= GetTotalTime64())
{
CLog::Log(LOGINFO, "PAPlayer: Passed end of track in a .cue sheet item");
m_decoder[m_currentDecoder].SetStatus(STATUS_ENDED);
}
// check whether we need to send off our callbacks etc.
int status = m_decoder[m_currentDecoder].GetStatus();
if (status == STATUS_NO_FILE)
return false;
UpdateCacheLevel();
// check whether we should queue the next file up
if ((GetTotalTime64() > 0) && GetTotalTime64() - GetTime() < TIME_TO_CACHE_NEXT_FILE + m_crossFading * 1000L && !m_cachingNextFile)
{ // request the next file from our application
m_callback.OnQueueNextItem();
m_cachingNextFile = true;
}
if (m_crossFading && m_decoder[0].GetChannels() == m_decoder[1].GetChannels())
{
if (((GetTotalTime64() - GetTime() < m_crossFading * 1000L) || (m_forceFadeToNext)) && !m_currentlyCrossFading)
{ // request the next file from our application
if (m_decoder[1 - m_currentDecoder].GetStatus() == STATUS_QUEUED && m_pAudioDecoder[1 - m_currentStream])
{
m_currentlyCrossFading = true;
if (m_forceFadeToNext)
{
m_forceFadeToNext = false;
m_crossFadeLength = m_crossFading * 1000L;
}
else
{
m_crossFadeLength = GetTotalTime64() - GetTime();
}
m_currentDecoder = 1 - m_currentDecoder;
m_decoder[m_currentDecoder].Start();
m_currentStream = 1 - m_currentStream;
CLog::Log(LOGDEBUG, "Starting Crossfade - resuming stream %i", m_currentStream);
m_pAudioDecoder[m_currentStream]->Resume();
m_callback.OnPlayBackStarted();
m_timeOffset = m_nextFile->m_lStartOffset * 1000 / 75;
m_bytesSentOut = 0;
*m_currentFile = *m_nextFile;
m_nextFile->Reset();
m_cachingNextFile = false;
}
}
}
// Check for EOF and queue the next track if applicable
if (m_decoder[m_currentDecoder].GetStatus() == STATUS_ENDED)
{ // time to swap tracks
if (m_nextFile->GetPath() != m_currentFile->GetPath() ||
!m_nextFile->m_lStartOffset ||
m_nextFile->m_lStartOffset != m_currentFile->m_lEndOffset)
{ // don't have a .cue sheet item
int nextstatus = m_decoder[1 - m_currentDecoder].GetStatus();
if (nextstatus == STATUS_QUEUED || nextstatus == STATUS_QUEUING || nextstatus == STATUS_PLAYING)
{ // swap streams
CLog::Log(LOGDEBUG, "PAPlayer: Swapping tracks %i to %i", m_currentDecoder, 1-m_currentDecoder);
if (!m_crossFading || m_decoder[0].GetChannels() != m_decoder[1].GetChannels())
{ // playing gapless (we use only the 1 output stream in this case)
int prefixAmount = m_decoder[m_currentDecoder].GetDataSize();
CLog::Log(LOGDEBUG, "PAPlayer::Prefixing %i samples of old data to new track for gapless playback", prefixAmount);
m_decoder[1 - m_currentDecoder].PrefixData(m_decoder[m_currentDecoder].GetData(prefixAmount), prefixAmount);
// check if we need to change the resampler (due to format change)
unsigned int channels, samplerate, bitspersample;
m_decoder[m_currentDecoder].GetDataFormat(&channels, &samplerate, &bitspersample);
unsigned int channels2, samplerate2, bitspersample2;
m_decoder[1 - m_currentDecoder].GetDataFormat(&channels2, &samplerate2, &bitspersample2);
// change of channels - reinitialize our speaker configuration
if (channels != channels2 || (g_advancedSettings.m_musicResample == 0 && (samplerate != samplerate2 || bitspersample != bitspersample2)))
{
CLog::Log(LOGINFO, "PAPlayer: Stream properties have changed, restarting stream");
FreeStream(m_currentStream);
if (!CreateStream(m_currentStream, channels2, samplerate2, bitspersample2))
{
CLog::Log(LOGERROR, "PAPlayer: Error creating stream!");
return false;
}
m_pAudioDecoder[m_currentStream]->Resume();
}
else if (samplerate != samplerate2 || bitspersample != bitspersample2)
{
CLog::Log(LOGINFO, "PAPlayer: Restarting resampler due to a change in data format");
m_resampler[m_currentStream].DeInitialize();
if (!m_resampler[m_currentStream].InitConverter(samplerate2, bitspersample2, channels2, g_advancedSettings.m_musicResample, 16, PACKET_SIZE))
{
CLog::Log(LOGERROR, "PAPlayer: Error initializing resampler!");
return false;
}
}
CLog::Log(LOGINFO, "PAPlayer: Starting new track");
m_decoder[m_currentDecoder].Destroy();
m_decoder[1 - m_currentDecoder].Start();
m_callback.OnPlayBackStarted();
m_timeOffset = m_nextFile->m_lStartOffset * 1000 / 75;
m_bytesSentOut = 0;
*m_currentFile = *m_nextFile;
m_nextFile->Reset();
m_cachingNextFile = false;
m_currentDecoder = 1 - m_currentDecoder;
}
else
{ // cross fading - shouldn't ever get here - if we do, return false
if (!m_currentlyCrossFading)
{
CLog::Log(LOGERROR, "End of file Reached before crossfading kicked in!");
return false;
}
else
{
CLog::Log(LOGINFO, "End of file reached before crossfading finished!");
return false;
}
}
}
else
{
if (GetTotalTime64() <= 0 && !m_bQueueFailed)
{ //we did not know the duration so didn't queue the next song, try queueing it now
if (!m_cachingNextFile)
{// request the next file from our application
m_callback.OnQueueNextItem();
m_cachingNextFile = true;
}
}
else
{
// no track queued - return and get another one once we are finished
// with the current stream
WaitForStream();
return false;
}
}
}
else
{
// set the next track playing (.cue sheet)
m_decoder[m_currentDecoder].SetStatus(STATUS_PLAYING);
m_callback.OnPlayBackStarted();
m_timeOffset = m_nextFile->m_lStartOffset * 1000 / 75;
m_bytesSentOut = 0;
*m_currentFile = *m_nextFile;
m_nextFile->Reset();
m_cachingNextFile = false;
}
}
// handle seeking and ffwd/rewding.
HandleSeeking();
if (!HandleFFwdRewd())
{
// need to skip to the next track - let's see if we already have another one
m_decoder[m_currentDecoder].SetStatus(STATUS_ENDED);
continue; // loop around to start the next track
}
if (!m_bPaused)
{
// Let our decoding stream(s) do their thing
int retVal = m_decoder[m_currentDecoder].ReadSamples(PACKET_SIZE);
if (retVal == RET_ERROR)
{
m_decoder[m_currentDecoder].Destroy();
return false;
}
int retVal2 = m_decoder[1 - m_currentDecoder].ReadSamples(PACKET_SIZE);
if (retVal2 == RET_ERROR)
{
m_decoder[1 - m_currentDecoder].Destroy();
}
// if we're cross-fading, then we do this for both streams, otherwise
// we do it just for the one stream.
if (m_currentlyCrossFading)
{
if (GetTime() >= m_crossFadeLength) // finished
{
CLog::Log(LOGDEBUG, "Finished Crossfading");
m_currentlyCrossFading = false;
SetStreamVolume(m_currentStream, g_settings.m_nVolumeLevel);
FreeStream(1 - m_currentStream);
m_decoder[1 - m_currentDecoder].Destroy();
}
else
{
float fraction = (float)(m_crossFadeLength - GetTime()) / (float)m_crossFadeLength - 0.5f;
// make sure we can take valid logs.
if (fraction > 0.499f) fraction = 0.499f;
if (fraction < -0.499f) fraction = -0.499f;
float volumeCurrent = 2000.0f * log10(0.5f - fraction);
float volumeNext = 2000.0f * log10(0.5f + fraction);
SetStreamVolume(m_currentStream, g_settings.m_nVolumeLevel + (int)volumeCurrent);
SetStreamVolume(1 - m_currentStream, g_settings.m_nVolumeLevel + (int)volumeNext);
if (AddPacketsToStream(1 - m_currentStream, m_decoder[1 - m_currentDecoder]))
retVal2 = RET_SUCCESS;
}
}
// add packets as necessary
if (AddPacketsToStream(m_currentStream, m_decoder[m_currentDecoder]))
retVal = RET_SUCCESS;
if (retVal == RET_SLEEP && retVal2 == RET_SLEEP)
{
float maximumSleepTime = m_pAudioDecoder[m_currentStream]->GetCacheTime();
if (m_pAudioDecoder[1 - m_currentStream])
maximumSleepTime = std::min(maximumSleepTime, m_pAudioDecoder[1 - m_currentStream]->GetCacheTime());
int sleep = std::max((int)((maximumSleepTime / 2.0f) * 1000.0f), 1);
Sleep(std::min(sleep, 15));
}
}
else
Sleep(100);
}
return true;
}
__int64 PAPlayer::GetTime()
{
__int64 timeplus = m_BytesPerSecond ? (__int64)(((float) m_bytesSentOut / (float) m_BytesPerSecond ) * 1000.0) : 0;
return m_timeOffset + timeplus - m_currentFile->m_lStartOffset * 1000 / 75;
}
__int64 PAPlayer::GetTotalTime64()
{
__int64 total = m_decoder[m_currentDecoder].TotalTime();
if (m_currentFile->m_lEndOffset)
total = m_currentFile->m_lEndOffset * 1000 / 75;
if (m_currentFile->m_lStartOffset)
total -= m_currentFile->m_lStartOffset * 1000 / 75;
return total;
}
int PAPlayer::GetTotalTime()
{
return (int)(GetTotalTime64()/1000);
}
int PAPlayer::GetCacheLevel() const
{
const ICodec* codec = m_decoder[m_currentDecoder].GetCodec();
if (codec)
return codec->GetCacheLevel();
return -1;
}
int PAPlayer::GetChannels()
{
ICodec* codec = m_decoder[m_currentDecoder].GetCodec();
if (codec)
return codec->m_Channels;
return 0;
}
int PAPlayer::GetBitsPerSample()
{
ICodec* codec = m_decoder[m_currentDecoder].GetCodec();
if (codec)
return codec->m_BitsPerSample;
return 0;
}
int PAPlayer::GetSampleRate()
{
ICodec* codec = m_decoder[m_currentDecoder].GetCodec();
if (codec)
return (int)((codec->m_SampleRate / 1000) + 0.5);
return 0;
}
CStdString PAPlayer::GetAudioCodecName()
{
ICodec* codec = m_decoder[m_currentDecoder].GetCodec();
if (codec)
return codec->m_CodecName;
return "";
}
int PAPlayer::GetAudioBitrate()
{
ICodec* codec = m_decoder[m_currentDecoder].GetCodec();
if (codec)
return codec->m_Bitrate;
return 0;
}
bool PAPlayer::CanSeek()
{
return ((m_decoder[m_currentDecoder].TotalTime() > 0) && m_decoder[m_currentDecoder].CanSeek());
}
void PAPlayer::Seek(bool bPlus, bool bLargeStep)
{
__int64 seek;
if (g_advancedSettings.m_musicUseTimeSeeking && GetTotalTime() > 2*g_advancedSettings.m_musicTimeSeekForwardBig)
{
if (bLargeStep)
seek = bPlus ? g_advancedSettings.m_musicTimeSeekForwardBig : g_advancedSettings.m_musicTimeSeekBackwardBig;
else
seek = bPlus ? g_advancedSettings.m_musicTimeSeekForward : g_advancedSettings.m_musicTimeSeekBackward;
seek *= 1000;
seek += GetTime();
}
else
{
float percent;
if (bLargeStep)
percent = bPlus ? (float)g_advancedSettings.m_musicPercentSeekForwardBig : (float)g_advancedSettings.m_musicPercentSeekBackwardBig;
else
percent = bPlus ? (float)g_advancedSettings.m_musicPercentSeekForward : (float)g_advancedSettings.m_musicPercentSeekBackward;
seek = (__int64)(GetTotalTime64()*(GetPercentage()+percent)/100);
}
SeekTime(seek);
}
void PAPlayer::SeekTime(__int64 iTime /*=0*/)
{
if (!CanSeek()) return;
int seekOffset = (int)(iTime - GetTime());
if (m_currentFile->m_lStartOffset)
iTime += m_currentFile->m_lStartOffset * 1000 / 75;
m_SeekTime = iTime;
m_callback.OnPlayBackSeek((int)m_SeekTime, seekOffset);
CLog::Log(LOGDEBUG, "PAPlayer::Seeking to time %f", 0.001f * m_SeekTime);
}
void PAPlayer::SeekPercentage(float fPercent /*=0*/)
{
if (fPercent < 0.0f) fPercent = 0.0f;
if (fPercent > 100.0f) fPercent = 100.0f;
SeekTime((__int64)(fPercent * 0.01f * (float)GetTotalTime64()));
}
float PAPlayer::GetPercentage()
{
float percent = (float)GetTime() * 100.0f / GetTotalTime64();
return percent;
}
void PAPlayer::HandleSeeking()
{
if (m_SeekTime != -1)
{
unsigned int time = XbmcThreads::SystemClockMillis();
m_timeOffset = m_decoder[m_currentDecoder].Seek(m_SeekTime);
CLog::Log(LOGDEBUG, "Seek to time %f took %i ms", 0.001f * m_SeekTime, (int)(XbmcThreads::SystemClockMillis() - time));
FlushStreams();
m_SeekTime = -1;
}
g_infoManager.m_performingSeek = false;
}
void PAPlayer::FlushStreams()
{
m_bytesSentOut = 0;
for (int stream = 0; stream < 2; stream++)
{
if (m_pAudioDecoder[stream] && m_packet[stream])
{
m_pAudioDecoder[stream]->Stop();
m_pAudioDecoder[stream]->Resume();
m_bufferPos[stream] = 0;
}
}
}
bool PAPlayer::HandleFFwdRewd()
{
if (!m_IsFFwdRewding && m_iSpeed == 1)
return true; // nothing to do
if (m_IsFFwdRewding && m_iSpeed == 1)
{ // stop ffwd/rewd
m_IsFFwdRewding = false;
SetVolume(g_settings.m_nVolumeLevel);
FlushStreams();
return true;
}
// we're definitely fastforwarding or rewinding
int snippet = m_BytesPerSecond / 2;
if ( m_bytesSentOut >= snippet )
{
// Calculate offset to seek if we do FF/RW
__int64 time = GetTime();
if (m_IsFFwdRewding) snippet = (int)m_bytesSentOut;
time += (__int64)((double)snippet * (m_iSpeed - 1.0) / m_BytesPerSecond * 1000.0);
// Is our offset inside the track range?
if (time >= 0 && time <= m_decoder[m_currentDecoder].TotalTime())
{ // just set next position to read
m_IsFFwdRewding = true;
time += m_currentFile->m_lStartOffset * 1000 / 75;
m_timeOffset = m_decoder[m_currentDecoder].Seek(time);
FlushStreams();
SetVolume(g_settings.m_nVolumeLevel - VOLUME_FFWD_MUTE); // override xbmc mute
}
else if (time < 0)
{ // ...disable seeking and start the track again
time = m_currentFile->m_lStartOffset * 1000 / 75;
m_timeOffset = m_decoder[m_currentDecoder].Seek(time);
FlushStreams();
m_iSpeed = 1;
SetVolume(g_settings.m_nVolumeLevel); // override xbmc mute
} // is our next position greater then the end sector...
else //if (time > m_codec->m_TotalTime)
{
// restore volume level so the next track isn't muted
SetVolume(g_settings.m_nVolumeLevel);
CLog::Log(LOGDEBUG, "PAPlayer: End of track reached while seeking");
return false;
}
}
return true;
}
void PAPlayer::SetStreamVolume(int stream, long nVolume)
{
m_pAudioDecoder[stream]->SetCurrentVolume(nVolume);
}
bool PAPlayer::AddPacketsToStream(int stream, CAudioDecoder &dec)
{
if (!m_pAudioDecoder[stream] || dec.GetStatus() == STATUS_NO_FILE)
return false;
bool ret = false;
int amount = m_resampler[stream].GetInputSamples();
if (amount > 0 && amount <= (int)dec.GetDataSize())
{ // resampler wants more data - let's feed it
m_resampler[stream].PutFloatData((float *)dec.GetData(amount), amount);
ret = true;
}
else if (m_resampler[stream].GetData(m_packet[stream][0].packet))
{
// got some data from our resampler - construct audio packet
m_packet[stream][0].length = PACKET_SIZE;
m_packet[stream][0].stream = stream;
unsigned char *pcmPtr = m_packet[stream][0].packet;
int len = m_packet[stream][0].length;
StreamCallback(&m_packet[stream][0]);
memcpy(m_pcmBuffer[stream]+m_bufferPos[stream], pcmPtr, len);
m_bufferPos[stream] += len;
while (m_bufferPos[stream] >= (int)m_pAudioDecoder[stream]->GetChunkLen())
{
int rtn = m_pAudioDecoder[stream]->AddPackets(m_pcmBuffer[stream], m_bufferPos[stream]);