chromecast/renderer/media/chromecast_media_renderer_factory.cc - Issue 981473003: Revert of Chromecast: Play audio streams not supported by CMA via default renderer

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Issue 981473003: Revert of Chromecast: Play audio streams not supported by CMA via default renderer (Closed) Base URL: https://chromium.googlesource.com/chromium/src.git@master

Patch Set: Created 5 years, 9 months ago

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1 // Copyright 2015 The Chromium Authors. All rights reserved.

2 // Use of this source code is governed by a BSD-style license that can be

3 // found in the LICENSE file.

4

5 #include "chromecast/renderer/media/chromecast_media_renderer_factory.h"

6

7 #include "base/command_line.h"

8 #include "chromecast/media/base/switching_media_renderer.h"

9 #include "chromecast/media/cma/filters/cma_renderer.h"

10 #include "chromecast/renderer/media/media_pipeline_proxy.h"

11 #include "content/public/renderer/render_thread.h"

12 #include "media/base/audio_hardware_config.h"

13 #include "media/base/media_log.h"

14 #include "media/renderers/default_renderer_factory.h"

15

16 namespace chromecast {

17 namespace media {

18

19 ChromecastMediaRendererFactory::ChromecastMediaRendererFactory(

20 const scoped_refptr<::media::MediaLog>& media_log,

21 int render_frame_id)

22 : render_frame_id_(render_frame_id),

23 media_log_(media_log) {

24 }

25

26 ChromecastMediaRendererFactory::~ChromecastMediaRendererFactory() {

27 }

28

29 scoped_ptr<::media::Renderer> ChromecastMediaRendererFactory::CreateRenderer(

30 const scoped_refptr<base::SingleThreadTaskRunner>& media_task_runner,

31 ::media::AudioRendererSink* audio_renderer_sink) {

32 if (!default_render_factory_) {

33 // Chromecast doesn't have input audio devices, so leave this uninitialized

34 ::media::AudioParameters input_audio_params;

35 // TODO(servolk): Audio parameters are hardcoded for now, but in the future

36 // either we need to obtain AudioHardwareConfig from RenderThreadImpl,

37 // or media renderer needs to figure out optimal audio parameters itself.

38 const int kDefaultSamplingRate = 48000;

39 const int kDefaultBitsPerSample = 16;

40 // About 20ms of stereo (2 channels) 16bit (2 byte) audio

41 int buffer_size = kDefaultSamplingRate * 20 * 2 * 2 / 1000;

42 ::media::AudioParameters output_audio_params(

43 ::media::AudioParameters::AUDIO_PCM_LOW_LATENCY,

44 ::media::CHANNEL_LAYOUT_STEREO,

45 kDefaultSamplingRate, kDefaultBitsPerSample,

46 buffer_size, ::media::AudioParameters::NO_EFFECTS);

47 ::media::AudioHardwareConfig audio_config(input_audio_params,

48 output_audio_params);

49

50 default_render_factory_.reset(new ::media::DefaultRendererFactory(

51 media_log_, /gpu_factories/ nullptr, audio_config));

52 }

53

54 DCHECK(default_render_factory_);

55 // TODO(erickung): crbug.com/443956. Need to provide right LoadType.

56 LoadType cma_load_type = kLoadTypeMediaSource;

57 scoped_ptr<MediaPipeline> cma_media_pipeline(

58 new MediaPipelineProxy(

59 render_frame_id_,

60 content::RenderThread::Get()->GetIOMessageLoopProxy(),

61 cma_load_type));

62 scoped_ptr<CmaRenderer> cma_renderer(

63 new CmaRenderer(cma_media_pipeline.Pass()));

64 scoped_ptr<::media::Renderer> default_media_render(

65 default_render_factory_->CreateRenderer(media_task_runner,

66 audio_renderer_sink));

67 scoped_ptr<SwitchingMediaRenderer> media_renderer(new SwitchingMediaRenderer(

68 default_media_render.Pass(), cma_renderer.Pass()));

69 return media_renderer.Pass();

70 }

71

72 } // namespace media

73 } // namespace chromecast

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