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1 // Copyright (c) 2012 The Chromium Authors. All rights reserved. | 1 // Copyright (c) 2012 The Chromium Authors. All rights reserved. |
2 // Use of this source code is governed by a BSD-style license that can be | 2 // Use of this source code is governed by a BSD-style license that can be |
3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
4 | 4 |
5 #include "media/base/audio_bus.h" | 5 #include "media/base/audio_bus.h" |
6 | 6 |
7 #include <stddef.h> | 7 #include <stddef.h> |
8 #include <stdint.h> | 8 #include <stdint.h> |
9 | 9 |
10 #include <limits> | 10 #include <limits> |
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290 void AudioBus::FromInterleaved(const void* source, int frames, | 290 void AudioBus::FromInterleaved(const void* source, int frames, |
291 int bytes_per_sample) { | 291 int bytes_per_sample) { |
292 FromInterleavedPartial(source, 0, frames, bytes_per_sample); | 292 FromInterleavedPartial(source, 0, frames, bytes_per_sample); |
293 } | 293 } |
294 | 294 |
295 void AudioBus::ToInterleaved(int frames, int bytes_per_sample, | 295 void AudioBus::ToInterleaved(int frames, int bytes_per_sample, |
296 void* dest) const { | 296 void* dest) const { |
297 ToInterleavedPartial(0, frames, bytes_per_sample, dest); | 297 ToInterleavedPartial(0, frames, bytes_per_sample, dest); |
298 } | 298 } |
299 | 299 |
300 void AudioBus::ToInterleavedFloat(int source_offset, | |
301 int destination_offset, | |
302 int num_samples, | |
303 int num_channels, | |
304 float* buffer) const { | |
mcasas
2016/03/09 00:24:18
DCHECK_EQ(num_channels, channels()); ?
Also chec
| |
305 for (int ch = 0; ch < this->channels(); ++ch) { | |
mcasas
2016/03/09 00:24:18
No |this|.
eklavyamirani
2016/03/15 03:48:13
Done.
| |
306 const float* src = this->channel(ch) + source_offset; | |
307 const float* const src_end = src + num_samples; | |
308 float* dest = buffer + destination_offset + ch; | |
309 for (; src < src_end; ++src, dest += num_channels) | |
310 *dest = *src; | |
311 } | |
312 } | |
313 | |
300 // TODO(dalecurtis): See if intrinsic optimizations help any here. | 314 // TODO(dalecurtis): See if intrinsic optimizations help any here. |
301 void AudioBus::ToInterleavedPartial(int start_frame, int frames, | 315 void AudioBus::ToInterleavedPartial(int start_frame, int frames, |
302 int bytes_per_sample, void* dest) const { | 316 int bytes_per_sample, void* dest) const { |
303 CheckOverflow(start_frame, frames, frames_); | 317 CheckOverflow(start_frame, frames, frames_); |
304 switch (bytes_per_sample) { | 318 switch (bytes_per_sample) { |
305 case 1: | 319 case 1: |
306 ToInterleavedInternal<uint8_t, int16_t, kUint8Bias>( | 320 ToInterleavedInternal<uint8_t, int16_t, kUint8Bias>( |
307 this, start_frame, frames, dest, std::numeric_limits<int8_t>::min(), | 321 this, start_frame, frames, dest, std::numeric_limits<int8_t>::min(), |
308 std::numeric_limits<int8_t>::max()); | 322 std::numeric_limits<int8_t>::max()); |
309 break; | 323 break; |
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366 return scoped_refptr<AudioBusRefCounted>( | 380 return scoped_refptr<AudioBusRefCounted>( |
367 new AudioBusRefCounted(channels, frames)); | 381 new AudioBusRefCounted(channels, frames)); |
368 } | 382 } |
369 | 383 |
370 AudioBusRefCounted::AudioBusRefCounted(int channels, int frames) | 384 AudioBusRefCounted::AudioBusRefCounted(int channels, int frames) |
371 : AudioBus(channels, frames) {} | 385 : AudioBus(channels, frames) {} |
372 | 386 |
373 AudioBusRefCounted::~AudioBusRefCounted() {} | 387 AudioBusRefCounted::~AudioBusRefCounted() {} |
374 | 388 |
375 } // namespace media | 389 } // namespace media |
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