mirror of
https://github.com/mollyim/webrtc.git
synced 2025-05-14 22:30:40 +01:00
92ea95e34a
In https://webrtc-review.googlesource.com/c/src/+/1560 we moved WebRTC from src/webrtc to src/ (in order to preserve an healthy git history). This CL takes care of fixing header guards, #include paths, etc... NOPRESUBMIT=true NOTREECHECKS=true NOTRY=true TBR=tommi@webrtc.org Bug: chromium:611808 Change-Id: Iea91618212bee0af16aa3f05071eab8f93706578 Reviewed-on: https://webrtc-review.googlesource.com/1561 Reviewed-by: Mirko Bonadei <mbonadei@webrtc.org> Reviewed-by: Henrik Kjellander <kjellander@webrtc.org> Commit-Queue: Mirko Bonadei <mbonadei@webrtc.org> Cr-Commit-Position: refs/heads/master@{#19846}
64 lines
2.2 KiB
C++
64 lines
2.2 KiB
C++
/*
|
|
* Copyright (c) 2014 The WebRTC project authors. All Rights Reserved.
|
|
*
|
|
* Use of this source code is governed by a BSD-style license
|
|
* that can be found in the LICENSE file in the root of the source
|
|
* tree. An additional intellectual property rights grant can be found
|
|
* in the file PATENTS. All contributing project authors may
|
|
* be found in the AUTHORS file in the root of the source tree.
|
|
*/
|
|
|
|
#ifndef COMMON_AUDIO_WAV_HEADER_H_
|
|
#define COMMON_AUDIO_WAV_HEADER_H_
|
|
|
|
#include <stddef.h>
|
|
#include <stdint.h>
|
|
|
|
namespace webrtc {
|
|
|
|
static const size_t kWavHeaderSize = 44;
|
|
|
|
class ReadableWav {
|
|
public:
|
|
// Returns the number of bytes read.
|
|
size_t virtual Read(void* buf, size_t num_bytes) = 0;
|
|
virtual ~ReadableWav() {}
|
|
};
|
|
|
|
enum WavFormat {
|
|
kWavFormatPcm = 1, // PCM, each sample of size bytes_per_sample
|
|
kWavFormatALaw = 6, // 8-bit ITU-T G.711 A-law
|
|
kWavFormatMuLaw = 7, // 8-bit ITU-T G.711 mu-law
|
|
};
|
|
|
|
// Return true if the given parameters will make a well-formed WAV header.
|
|
bool CheckWavParameters(size_t num_channels,
|
|
int sample_rate,
|
|
WavFormat format,
|
|
size_t bytes_per_sample,
|
|
size_t num_samples);
|
|
|
|
// Write a kWavHeaderSize bytes long WAV header to buf. The payload that
|
|
// follows the header is supposed to have the specified number of interleaved
|
|
// channels and contain the specified total number of samples of the specified
|
|
// type. CHECKs the input parameters for validity.
|
|
void WriteWavHeader(uint8_t* buf,
|
|
size_t num_channels,
|
|
int sample_rate,
|
|
WavFormat format,
|
|
size_t bytes_per_sample,
|
|
size_t num_samples);
|
|
|
|
// Read a WAV header from an implemented ReadableWav and parse the values into
|
|
// the provided output parameters. ReadableWav is used because the header can
|
|
// be variably sized. Returns false if the header is invalid.
|
|
bool ReadWavHeader(ReadableWav* readable,
|
|
size_t* num_channels,
|
|
int* sample_rate,
|
|
WavFormat* format,
|
|
size_t* bytes_per_sample,
|
|
size_t* num_samples);
|
|
|
|
} // namespace webrtc
|
|
|
|
#endif // COMMON_AUDIO_WAV_HEADER_H_
|