diff options
Diffstat (limited to 'services/audiopolicy/common/managerdefinitions/src/AudioPort.cpp')
-rw-r--r-- | services/audiopolicy/common/managerdefinitions/src/AudioPort.cpp | 61 |
1 files changed, 48 insertions, 13 deletions
diff --git a/services/audiopolicy/common/managerdefinitions/src/AudioPort.cpp b/services/audiopolicy/common/managerdefinitions/src/AudioPort.cpp index e8191dd..f3978ec 100644 --- a/services/audiopolicy/common/managerdefinitions/src/AudioPort.cpp +++ b/services/audiopolicy/common/managerdefinitions/src/AudioPort.cpp @@ -16,7 +16,7 @@ #define LOG_TAG "APM::AudioPort" //#define LOG_NDEBUG 0 - +#include <media/AudioResamplerPublic.h> #include "AudioPort.h" #include "HwModule.h" #include "AudioGain.h" @@ -216,6 +216,7 @@ void AudioPort::loadFormats(char *name) } str = strtok(NULL, "|"); } + mFormats.sort(compareFormatsGoodToBad); } void AudioPort::loadInChannels(char *name) @@ -358,6 +359,9 @@ status_t AudioPort::checkCompatibleSamplingRate(uint32_t samplingRate, uint32_t *updatedSamplingRate) const { if (mSamplingRates.isEmpty()) { + if (updatedSamplingRate != NULL) { + *updatedSamplingRate = samplingRate; + } return NO_ERROR; } @@ -387,16 +391,11 @@ status_t AudioPort::checkCompatibleSamplingRate(uint32_t samplingRate, } } } - // This uses hard-coded knowledge about AudioFlinger resampling ratios. - // TODO Move these assumptions out. - static const uint32_t kMaxDownSampleRatio = 6; // beyond this aliasing occurs - static const uint32_t kMaxUpSampleRatio = 256; // beyond this sample rate inaccuracies occur - // due to approximation by an int32_t of the - // phase increments + // Prefer to down-sample from a higher sampling rate, as we get the desired frequency spectrum. if (minAbove >= 0) { candidate = mSamplingRates[minAbove]; - if (candidate / kMaxDownSampleRatio <= samplingRate) { + if (candidate / AUDIO_RESAMPLER_DOWN_RATIO_MAX <= samplingRate) { if (updatedSamplingRate != NULL) { *updatedSamplingRate = candidate; } @@ -406,7 +405,7 @@ status_t AudioPort::checkCompatibleSamplingRate(uint32_t samplingRate, // But if we have to up-sample from a lower sampling rate, that's OK. if (maxBelow >= 0) { candidate = mSamplingRates[maxBelow]; - if (candidate * kMaxUpSampleRatio >= samplingRate) { + if (candidate * AUDIO_RESAMPLER_UP_RATIO_MAX >= samplingRate) { if (updatedSamplingRate != NULL) { *updatedSamplingRate = candidate; } @@ -431,10 +430,13 @@ status_t AudioPort::checkExactChannelMask(audio_channel_mask_t channelMask) cons return BAD_VALUE; } -status_t AudioPort::checkCompatibleChannelMask(audio_channel_mask_t channelMask) - const +status_t AudioPort::checkCompatibleChannelMask(audio_channel_mask_t channelMask, + audio_channel_mask_t *updatedChannelMask) const { if (mChannelMasks.isEmpty()) { + if (updatedChannelMask != NULL) { + *updatedChannelMask = channelMask; + } return NO_ERROR; } @@ -443,6 +445,9 @@ status_t AudioPort::checkCompatibleChannelMask(audio_channel_mask_t channelMask) // FIXME Does not handle multi-channel automatic conversions yet audio_channel_mask_t supported = mChannelMasks[i]; if (supported == channelMask) { + if (updatedChannelMask != NULL) { + *updatedChannelMask = channelMask; + } return NO_ERROR; } if (isRecordThread) { @@ -452,6 +457,9 @@ status_t AudioPort::checkCompatibleChannelMask(audio_channel_mask_t channelMask) && channelMask == AUDIO_CHANNEL_IN_MONO) || (supported == AUDIO_CHANNEL_IN_MONO && (channelMask == AUDIO_CHANNEL_IN_FRONT_BACK || channelMask == AUDIO_CHANNEL_IN_STEREO))) { + if (updatedChannelMask != NULL) { + *updatedChannelMask = supported; + } return NO_ERROR; } } @@ -459,7 +467,7 @@ status_t AudioPort::checkCompatibleChannelMask(audio_channel_mask_t channelMask) return BAD_VALUE; } -status_t AudioPort::checkFormat(audio_format_t format) const +status_t AudioPort::checkExactFormat(audio_format_t format) const { if (mFormats.isEmpty()) { return NO_ERROR; @@ -473,6 +481,33 @@ status_t AudioPort::checkFormat(audio_format_t format) const return BAD_VALUE; } +status_t AudioPort::checkCompatibleFormat(audio_format_t format, audio_format_t *updatedFormat) + const +{ + if (mFormats.isEmpty()) { + if (updatedFormat != NULL) { + *updatedFormat = format; + } + return NO_ERROR; + } + + const bool checkInexact = // when port is input and format is linear pcm + mType == AUDIO_PORT_TYPE_MIX && mRole == AUDIO_PORT_ROLE_SINK + && audio_is_linear_pcm(format); + + for (size_t i = 0; i < mFormats.size(); ++i) { + if (mFormats[i] == format || + (checkInexact && audio_is_linear_pcm(mFormats[i]))) { + // for inexact checks we take the first linear pcm format since + // mFormats is sorted from best PCM format to worst PCM format. + if (updatedFormat != NULL) { + *updatedFormat = mFormats[i]; + } + return NO_ERROR; + } + } + return BAD_VALUE; +} uint32_t AudioPort::pickSamplingRate() const { @@ -756,7 +791,7 @@ status_t AudioPortConfig::applyAudioPortConfig( mChannelMask = config->channel_mask; } if (config->config_mask & AUDIO_PORT_CONFIG_FORMAT) { - status = audioport->checkFormat(config->format); + status = audioport->checkExactFormat(config->format); if (status != NO_ERROR) { goto exit; } |