91d6edef35
We must remove dependency on Chromium, i.e. we can't use Chromium's base/logging.h. That means we need to define these macros in WebRTC also when doing Chromium builds. And this causes redefinition. Alternative solutions: * Check if we already have defined e.g. CHECK, and don't define them in that case. This makes us depend on include order in Chromium, which is not acceptable. * Don't allow using the macros in WebRTC headers. Error prone since if someone adds it there by mistake it may compile fine, but later break if a header in added or order is changed in Chromium. That will be confusing and hard to enforce. * Ensure that headers that are included by an embedder don't include our macros. This would require some heavy refactoring to be maintainable and enforcable. * Changes in Chromium for this is obviously not an option. BUG=chromium:468375 NOTRY=true Review URL: https://codereview.webrtc.org/1335923002 Cr-Commit-Position: refs/heads/master@{#9964}
116 lines
3.5 KiB
C++
116 lines
3.5 KiB
C++
/*
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* Copyright (c) 2014 The WebRTC project authors. All Rights Reserved.
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*
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* Use of this source code is governed by a BSD-style license
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* that can be found in the LICENSE file in the root of the source
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* tree. An additional intellectual property rights grant can be found
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* in the file PATENTS. All contributing project authors may
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* be found in the AUTHORS file in the root of the source tree.
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*/
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#ifndef WEBRTC_COMMON_AUDIO_WAV_FILE_H_
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#define WEBRTC_COMMON_AUDIO_WAV_FILE_H_
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#ifdef __cplusplus
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#include <stdint.h>
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#include <cstddef>
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#include <string>
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#include "webrtc/base/constructormagic.h"
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namespace webrtc {
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// Interface to provide access to WAV file parameters.
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class WavFile {
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public:
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virtual ~WavFile() {}
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virtual int sample_rate() const = 0;
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virtual int num_channels() const = 0;
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virtual uint32_t num_samples() const = 0;
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};
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// Simple C++ class for writing 16-bit PCM WAV files. All error handling is
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// by calls to RTC_CHECK(), making it unsuitable for anything but debug code.
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class WavWriter final : public WavFile {
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public:
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// Open a new WAV file for writing.
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WavWriter(const std::string& filename, int sample_rate, int num_channels);
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// Close the WAV file, after writing its header.
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~WavWriter();
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// Write additional samples to the file. Each sample is in the range
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// [-32768,32767], and there must be the previously specified number of
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// interleaved channels.
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void WriteSamples(const float* samples, size_t num_samples);
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void WriteSamples(const int16_t* samples, size_t num_samples);
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int sample_rate() const override { return sample_rate_; }
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int num_channels() const override { return num_channels_; }
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uint32_t num_samples() const override { return num_samples_; }
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private:
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void Close();
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const int sample_rate_;
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const int num_channels_;
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uint32_t num_samples_; // Total number of samples written to file.
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FILE* file_handle_; // Output file, owned by this class
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RTC_DISALLOW_COPY_AND_ASSIGN(WavWriter);
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};
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// Follows the conventions of WavWriter.
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class WavReader final : public WavFile {
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public:
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// Opens an existing WAV file for reading.
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explicit WavReader(const std::string& filename);
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// Close the WAV file.
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~WavReader();
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// Returns the number of samples read. If this is less than requested,
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// verifies that the end of the file was reached.
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size_t ReadSamples(size_t num_samples, float* samples);
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size_t ReadSamples(size_t num_samples, int16_t* samples);
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int sample_rate() const override { return sample_rate_; }
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int num_channels() const override { return num_channels_; }
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uint32_t num_samples() const override { return num_samples_; }
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private:
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void Close();
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int sample_rate_;
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int num_channels_;
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uint32_t num_samples_; // Total number of samples in the file.
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uint32_t num_samples_remaining_;
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FILE* file_handle_; // Input file, owned by this class.
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RTC_DISALLOW_COPY_AND_ASSIGN(WavReader);
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};
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} // namespace webrtc
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extern "C" {
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#endif // __cplusplus
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// C wrappers for the WavWriter class.
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typedef struct rtc_WavWriter rtc_WavWriter;
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rtc_WavWriter* rtc_WavOpen(const char* filename,
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int sample_rate,
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int num_channels);
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void rtc_WavClose(rtc_WavWriter* wf);
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void rtc_WavWriteSamples(rtc_WavWriter* wf,
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const float* samples,
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size_t num_samples);
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int rtc_WavSampleRate(const rtc_WavWriter* wf);
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int rtc_WavNumChannels(const rtc_WavWriter* wf);
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uint32_t rtc_WavNumSamples(const rtc_WavWriter* wf);
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#ifdef __cplusplus
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} // extern "C"
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#endif
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#endif // WEBRTC_COMMON_AUDIO_WAV_FILE_H_
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