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1869e5c50c
Signed-off-by: Niccolò Belli <niccolo.belli@linuxsystems.it> Signed-off-by: Sam James <sam@gentoo.org>
103 lines
3.7 KiB
Diff
103 lines
3.7 KiB
Diff
From: Than <than@redhat.com>
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Date: Mon, 6 Jun 2016 12:08:58 -0400
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Subject: big endian support
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https://sources.debian.org/patches/webrtc-audio-processing/0.3-1/big-endian-support.patch/
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https://bugs.freedesktop.org/show_bug.cgi?id=95738
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---
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webrtc/common_audio/wav_file.cc | 20 +++++++++++++++-----
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webrtc/common_audio/wav_header.cc | 34 +++++++++++++++++++++++++++++++++-
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2 files changed, 48 insertions(+), 6 deletions(-)
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diff --git a/webrtc/common_audio/wav_file.cc b/webrtc/common_audio/wav_file.cc
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index b14b620..05fa052 100644
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--- a/webrtc/common_audio/wav_file.cc
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+++ b/webrtc/common_audio/wav_file.cc
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@@ -64,9 +64,6 @@ WavReader::~WavReader() {
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}
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size_t WavReader::ReadSamples(size_t num_samples, int16_t* samples) {
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-#ifndef WEBRTC_ARCH_LITTLE_ENDIAN
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-#error "Need to convert samples to big-endian when reading from WAV file"
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-#endif
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// There could be metadata after the audio; ensure we don't read it.
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num_samples = std::min(rtc::checked_cast<uint32_t>(num_samples),
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num_samples_remaining_);
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@@ -76,6 +73,12 @@ size_t WavReader::ReadSamples(size_t num_samples, int16_t* samples) {
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RTC_CHECK(read == num_samples || feof(file_handle_));
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RTC_CHECK_LE(read, num_samples_remaining_);
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num_samples_remaining_ -= rtc::checked_cast<uint32_t>(read);
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+#ifndef WEBRTC_ARCH_LITTLE_ENDIAN
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+ //convert to big-endian
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+ for(size_t idx = 0; idx < num_samples; idx++) {
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+ samples[idx] = (samples[idx]<<8) | (samples[idx]>>8);
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+ }
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+#endif
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return read;
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}
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@@ -120,10 +123,17 @@ WavWriter::~WavWriter() {
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void WavWriter::WriteSamples(const int16_t* samples, size_t num_samples) {
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#ifndef WEBRTC_ARCH_LITTLE_ENDIAN
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-#error "Need to convert samples to little-endian when writing to WAV file"
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-#endif
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+ int16_t * le_samples = new int16_t[num_samples];
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+ for(size_t idx = 0; idx < num_samples; idx++) {
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+ le_samples[idx] = (samples[idx]<<8) | (samples[idx]>>8);
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+ }
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+ const size_t written =
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+ fwrite(le_samples, sizeof(*le_samples), num_samples, file_handle_);
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+ delete []le_samples;
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+#else
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const size_t written =
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fwrite(samples, sizeof(*samples), num_samples, file_handle_);
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+#endif
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RTC_CHECK_EQ(num_samples, written);
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num_samples_ += static_cast<uint32_t>(written);
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RTC_CHECK(written <= std::numeric_limits<uint32_t>::max() ||
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diff --git a/webrtc/common_audio/wav_header.cc b/webrtc/common_audio/wav_header.cc
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index 61cfffe..53882ff 100644
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--- a/webrtc/common_audio/wav_header.cc
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+++ b/webrtc/common_audio/wav_header.cc
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@@ -129,7 +129,39 @@ static inline std::string ReadFourCC(uint32_t x) {
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return std::string(reinterpret_cast<char*>(&x), 4);
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}
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#else
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-#error "Write be-to-le conversion functions"
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+static inline void WriteLE16(uint16_t* f, uint16_t x) {
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+ *f = ((x << 8) & 0xff00) | ( ( x >> 8) & 0x00ff);
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+}
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+
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+static inline void WriteLE32(uint32_t* f, uint32_t x) {
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+ *f = ( (x & 0x000000ff) << 24 )
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+ | ((x & 0x0000ff00) << 8)
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+ | ((x & 0x00ff0000) >> 8)
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+ | ((x & 0xff000000) >> 24 );
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+}
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+
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+static inline void WriteFourCC(uint32_t* f, char a, char b, char c, char d) {
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+ *f = (static_cast<uint32_t>(a) << 24 )
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+ | (static_cast<uint32_t>(b) << 16)
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+ | (static_cast<uint32_t>(c) << 8)
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+ | (static_cast<uint32_t>(d) );
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+}
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+
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+static inline uint16_t ReadLE16(uint16_t x) {
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+ return (( x & 0x00ff) << 8 )| ((x & 0xff00)>>8);
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+}
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+
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+static inline uint32_t ReadLE32(uint32_t x) {
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+ return ( (x & 0x000000ff) << 24 )
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+ | ( (x & 0x0000ff00) << 8 )
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+ | ( (x & 0x00ff0000) >> 8)
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+ | ( (x & 0xff000000) >> 24 );
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+}
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+
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+static inline std::string ReadFourCC(uint32_t x) {
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+ x = ReadLE32(x);
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+ return std::string(reinterpret_cast<char*>(&x), 4);
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+}
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#endif
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static inline uint32_t RiffChunkSize(uint32_t bytes_in_payload) {
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