diff options
Diffstat (limited to 'LUFA/Drivers/USB/Class')
| -rw-r--r-- | LUFA/Drivers/USB/Class/Common/Audio.h | 27 |
1 files changed, 16 insertions, 11 deletions
diff --git a/LUFA/Drivers/USB/Class/Common/Audio.h b/LUFA/Drivers/USB/Class/Common/Audio.h index 713c96f7c..cc6e8e52d 100644 --- a/LUFA/Drivers/USB/Class/Common/Audio.h +++ b/LUFA/Drivers/USB/Class/Common/Audio.h @@ -64,13 +64,6 @@ #endif /* Macros: */ - #if !defined(AUDIO_TOTAL_SAMPLE_RATES) || defined(__DOXYGEN__) - /** Total number of discrete audio sample rates supported by the device. This value can be overridden by defining this - * token in the project makefile to the desired value, and passing it to the compiler via the -D switch. - */ - #define AUDIO_TOTAL_SAMPLE_RATES 1 - #endif - /** \name Audio Channel Masks */ //@{ /** Supported channel mask for an Audio class terminal descriptor. See the Audio class specification for more details. */ @@ -563,6 +556,9 @@ * about the number of channels, the sample resolution, acceptable sample frequencies and encoding method used * in the device's audio streams. See the USB Audio specification for more details. * + * \note This descriptor <b>must</b> be followed by one or more \ref USB_Audio_SampleFreq_t elements containing + * the continuous or discrete sample frequencies. + * * \see \ref USB_Audio_StdDescriptor_Format_t for the version of this type with standard element names. */ typedef struct @@ -578,8 +574,11 @@ uint8_t SubFrameSize; /**< Size in bytes of each channel's sample data in the stream. */ uint8_t BitResolution; /**< Bits of resolution of each channel's samples in the stream. */ - uint8_t SampleFrequencyType; /**< Total number of sample frequencies supported by the device. */ - USB_Audio_SampleFreq_t SampleFrequencies[AUDIO_TOTAL_SAMPLE_RATES]; /**< Sample frequencies supported by the device (must be 24-bit). */ + uint8_t TotalDiscreteSampleRates; /**< Total number of discrete sample frequencies supported by the device. When + * zero, this must be followed by the lower and upper continuous sampling + * frequencies supported by the device; otherwise, this must be followed + * by the given number of discrete sampling frequencies supported. + */ } ATTR_PACKED USB_Audio_Descriptor_Format_t; /** \brief Audio class-specific Format Descriptor (USB-IF naming conventions). @@ -588,6 +587,9 @@ * about the number of channels, the sample resolution, acceptable sample frequencies and encoding method used * in the device's audio streams. See the USB Audio specification for more details. * + * \note This descriptor <b>must</b> be followed by one or more 24-bit integer elements containing the continuous + * or discrete sample frequencies. + * * \see \ref USB_Audio_Descriptor_Format_t for the version of this type with non-standard LUFA specific * element names. */ @@ -608,8 +610,11 @@ uint8_t bSubFrameSize; /**< Size in bytes of each channel's sample data in the stream. */ uint8_t bBitResolution; /**< Bits of resolution of each channel's samples in the stream. */ - uint8_t bSampleFrequencyType; /**< Total number of sample frequencies supported by the device. */ - uint8_t SampleFrequencies[AUDIO_TOTAL_SAMPLE_RATES * 3]; /**< Sample frequencies supported by the device (must be 24-bit). */ + uint8_t bSampleFrequencyType; /**< Total number of sample frequencies supported by the device. When + * zero, this must be followed by the lower and upper continuous sampling + * frequencies supported by the device; otherwise, this must be followed + * by the given number of discrete sampling frequencies supported. + */ } ATTR_PACKED USB_Audio_StdDescriptor_Format_t; /** \brief Audio class-specific Streaming Endpoint Descriptor (LUFA naming conventions). |