OcMp3Lib.c File Reference

#include <Uefi.h>
#include <Library/BaseMemoryLib.h>
#include <Library/BaseOverflowLib.h>
#include <Library/DebugLib.h>
#include <Library/MemoryAllocationLib.h>
#include <Library/OcMp3Lib.h>
#include "helix/mp3dec.h"

Go to the source code of this file.

Functions
STATIC BOOLEAN	BufferResize (IN OUT VOID **Buffer, IN OUT VOID **BufferCurr, IN OUT UINT32 *BufferSize)
EFI_STATUS	OcDecodeMp3 (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)

Detailed Description

Copyright (C) 2021, vit9696. All rights reserved.

All rights reserved.

This program and the accompanying materials are licensed and made available under the terms and conditions of the BSD License which accompanies this distribution. The full text of the license may be found at http://opensource.org/licenses/bsd-license.php

THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS, WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.

Definition in file OcMp3Lib.c.

Function Documentation

BufferResize()

STATIC BOOLEAN BufferResize	(	IN OUT VOID **	Buffer,
		IN OUT VOID **	BufferCurr,
		IN OUT UINT32 *	BufferSize )

Ensure that buffer always has enough memory to hold one frame.

Parameters

[in,out]	Buffer	Pointer to buffer memory.
[in,out]	BufferCurr	Pointer to buffer current position.
[in,out]	BufferSize	Pointer to buffer size.

Return values

TRUE	on success.
FALSE	on allocation falure.

Definition at line 36 of file OcMp3Lib.c.

OcDecodeMp3()

EFI_STATUS OcDecodeMp3	(	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. WARNING: This method does not take untrusted data.

Parameters

[in]	InBuffer	Buffer with mp3 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_UNSUPPORTED	on format mismatch.
EFI_OUT_OF_RESOURCES	on memory allocation failure.

Definition at line 89 of file OcMp3Lib.c.