AudioDecode.c File Reference

#include "AudioDxe.h"
#include <Library/OcMp3Lib.h>
#include <Library/OcWaveLib.h>

Go to the source code of this file.

Functions
STATIC EFI_STATUS EFIAPI	AudioDecodeWave (IN EFI_AUDIO_DECODE_PROTOCOL *This, IN CONST VOID *InBuffer, IN UINT32 InBufferSize, OUT VOID **OutBuffer, OUT UINT32 *OutBufferSize, OUT EFI_AUDIO_IO_PROTOCOL_FREQ *Frequency, OUT EFI_AUDIO_IO_PROTOCOL_BITS *Bits, OUT UINT8 *Channels, IN BOOLEAN InPlace)
STATIC EFI_STATUS EFIAPI	AudioDecodeMp3 (IN EFI_AUDIO_DECODE_PROTOCOL *This, IN CONST VOID *InBuffer, IN UINT32 InBufferSize, OUT VOID **OutBuffer, OUT UINT32 *OutBufferSize, OUT EFI_AUDIO_IO_PROTOCOL_FREQ *Frequency, OUT EFI_AUDIO_IO_PROTOCOL_BITS *Bits, OUT UINT8 *Channels)
STATIC EFI_STATUS EFIAPI	AudioDecodeAny (IN EFI_AUDIO_DECODE_PROTOCOL *This, IN CONST VOID *InBuffer, IN UINT32 InBufferSize, OUT VOID **OutBuffer, OUT UINT32 *OutBufferSize, OUT EFI_AUDIO_IO_PROTOCOL_FREQ *Frequency, OUT EFI_AUDIO_IO_PROTOCOL_BITS *Bits, OUT UINT8 *Channels)

Variables
EFI_AUDIO_DECODE_PROTOCOL	gEfiAudioDecodeProtocol

Function Documentation

AudioDecodeAny()

STATIC EFI_STATUS EFIAPI AudioDecodeAny	(	IN EFI_AUDIO_DECODE_PROTOCOL *	This,
		IN CONST VOID *	InBuffer,
		IN UINT32	InBufferSize,
		OUT VOID **	OutBuffer,
		OUT UINT32 *	OutBufferSize,
		OUT EFI_AUDIO_IO_PROTOCOL_FREQ *	Frequency,
		OUT EFI_AUDIO_IO_PROTOCOL_BITS *	Bits,
		OUT UINT8 *	Channels )

Decode any supported audio to PCM audio.

Parameters

[in]	This	Audio decode protocol instance.
[in]	InBuffer	Buffer with audio data.
[in]	InBufferSize	InBuffer size in bytes.
[out]	OutBuffer	Decoded PCM data allocated from pool (needs to be freed).
[out]	OutBufferSize	Decoded PCM data size in bytes.
[out]	Frequency	Decoded PCM frequency.
[out]	Bits	Decoded bit count.
[out]	Channels	Decoded amount of channels.

Return values

EFI_SUCCESS	on success.
EFI_INVALID_PARAMETER	for null pointers.
EFI_UNSUPPORTED	on format mismatch.
EFI_OUT_OF_RESOURCES	on memory allocation failure.

Definition at line 154 of file AudioDecode.c.

AudioDecodeMp3()

STATIC EFI_STATUS EFIAPI AudioDecodeMp3	(	IN EFI_AUDIO_DECODE_PROTOCOL *	This,
		IN CONST VOID *	InBuffer,
		IN UINT32	InBufferSize,
		OUT VOID **	OutBuffer,
		OUT UINT32 *	OutBufferSize,
		OUT EFI_AUDIO_IO_PROTOCOL_FREQ *	Frequency,
		OUT EFI_AUDIO_IO_PROTOCOL_BITS *	Bits,
		OUT UINT8 *	Channels )

Decode MP3 audio to PCM audio.

Parameters

[in]	This	Audio decode protocol instance.
[in]	InBuffer	Buffer with audio data.
[in]	InBufferSize	InBuffer size in bytes.
[out]	OutBuffer	Decoded PCM data allocated from pool (needs to be freed).
[out]	OutBufferSize	Decoded PCM data size in bytes.
[out]	Frequency	Decoded PCM frequency.
[out]	Bits	Decoded bit count.
[out]	Channels	Decoded amount of channels.

Return values

EFI_SUCCESS	on success.
EFI_INVALID_PARAMETER	for null pointers.
EFI_UNSUPPORTED	on format mismatch.
EFI_OUT_OF_RESOURCES	on memory allocation failure.

Definition at line 108 of file AudioDecode.c.

AudioDecodeWave()

STATIC EFI_STATUS EFIAPI AudioDecodeWave	(	IN EFI_AUDIO_DECODE_PROTOCOL *	This,
		IN CONST VOID *	InBuffer,
		IN UINT32	InBufferSize,
		OUT VOID **	OutBuffer,
		OUT UINT32 *	OutBufferSize,
		OUT EFI_AUDIO_IO_PROTOCOL_FREQ *	Frequency,
		OUT EFI_AUDIO_IO_PROTOCOL_BITS *	Bits,
		OUT UINT8 *	Channels,
		IN BOOLEAN	InPlace )

Decode WAVE audio to PCM audio.

Parameters

[in]	This	Audio decode protocol instance.
[in]	InBuffer	Buffer with audio data.
[in]	InBufferSize	InBuffer size in bytes.
[out]	OutBuffer	Decoded PCM data.
[out]	OutBufferSize	Decoded PCM data size in bytes.
[out]	Frequency	Decoded PCM frequency.
[out]	Bits	Decoded bit count.
[out]	Channels	Decoded amount of channels.
[in]	InPlace	Do not allocate OutBuffer, but reuse InBuffer. Otherwise allocated from pool and needs to be freed.

Return values

EFI_SUCCESS	on success.
EFI_INVALID_PARAMETER	for null pointers.
EFI_UNSUPPORTED	on format mismatch.
EFI_OUT_OF_RESOURCES	on memory allocation failure.

Definition at line 51 of file AudioDecode.c.

Variable Documentation

gEfiAudioDecodeProtocol

EFI_AUDIO_DECODE_PROTOCOL gEfiAudioDecodeProtocol

Initial value:

= {
  .DecodeAny  = AudioDecodeAny,
  .DecodeWave = AudioDecodeWave,
  .DecodeMp3  = AudioDecodeMp3
}

Protocol definition.

Definition at line 198 of file AudioDecode.c.