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// Copyright 2013 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "media/base/android/video_decoder_job.h"
#include "base/bind.h"
#include "base/lazy_instance.h"
#include "base/threading/thread.h"
#include "media/base/android/media_codec_bridge.h"
#include "media/base/android/media_drm_bridge.h"
namespace media {
class VideoDecoderThread : public base::Thread {
public:
VideoDecoderThread() : base::Thread("MediaSource_VideoDecoderThread") {
Start();
}
};
// TODO(qinmin): Check if it is tolerable to use worker pool to handle all the
// decoding tasks so that we don't need a global thread here.
// http://crbug.com/245750
base::LazyInstance<VideoDecoderThread>::Leaky
g_video_decoder_thread = LAZY_INSTANCE_INITIALIZER;
VideoDecoderJob::VideoDecoderJob(
const base::Closure& request_data_cb,
const base::Closure& request_resources_cb,
const base::Closure& on_demuxer_config_changed_cb)
: MediaDecoderJob(g_video_decoder_thread.Pointer()->task_runner(),
request_data_cb,
on_demuxer_config_changed_cb),
video_codec_(kUnknownVideoCodec),
config_width_(0),
config_height_(0),
output_width_(0),
output_height_(0),
request_resources_cb_(request_resources_cb) {
}
VideoDecoderJob::~VideoDecoderJob() {}
bool VideoDecoderJob::SetVideoSurface(gfx::ScopedJavaSurface surface) {
// For an empty surface, always pass it to the |media_codec_bridge_| job so
// that it can detach from the current one. Otherwise, don't pass an
// unprotected surface if the video content requires a protected one.
if (!surface.IsEmpty() && IsProtectedSurfaceRequired() &&
!surface.is_protected()) {
return false;
}
surface_ = surface.Pass();
need_to_reconfig_decoder_job_ = true;
return true;
}
bool VideoDecoderJob::HasStream() const {
return video_codec_ != kUnknownVideoCodec;
}
void VideoDecoderJob::ReleaseDecoderResources() {
MediaDecoderJob::ReleaseDecoderResources();
surface_ = gfx::ScopedJavaSurface();
}
void VideoDecoderJob::SetDemuxerConfigs(const DemuxerConfigs& configs) {
video_codec_ = configs.video_codec;
config_width_ = configs.video_size.width();
config_height_ = configs.video_size.height();
set_is_content_encrypted(configs.is_video_encrypted);
if (!media_codec_bridge_) {
output_width_ = config_width_;
output_height_ = config_height_;
}
}
void VideoDecoderJob::ReleaseOutputBuffer(
int output_buffer_index,
size_t offset,
size_t size,
bool render_output,
base::TimeDelta current_presentation_timestamp,
const ReleaseOutputCompletionCallback& callback) {
media_codec_bridge_->ReleaseOutputBuffer(output_buffer_index, render_output);
callback.Run(current_presentation_timestamp, current_presentation_timestamp);
}
bool VideoDecoderJob::ComputeTimeToRender() const {
return true;
}
bool VideoDecoderJob::IsCodecReconfigureNeeded(
const DemuxerConfigs& configs) const {
if (!media_codec_bridge_)
return true;
if (!AreDemuxerConfigsChanged(configs))
return false;
bool only_size_changed = false;
if (video_codec_ == configs.video_codec &&
is_content_encrypted() == configs.is_video_encrypted) {
only_size_changed = true;
}
return !only_size_changed ||
!static_cast<VideoCodecBridge*>(media_codec_bridge_.get())->
IsAdaptivePlaybackSupported(configs.video_size.width(),
configs.video_size.height());
}
bool VideoDecoderJob::AreDemuxerConfigsChanged(
const DemuxerConfigs& configs) const {
return video_codec_ != configs.video_codec ||
is_content_encrypted() != configs.is_video_encrypted ||
config_width_ != configs.video_size.width() ||
config_height_ != configs.video_size.height();
}
MediaDecoderJob::MediaDecoderJobStatus
VideoDecoderJob::CreateMediaCodecBridgeInternal() {
if (surface_.IsEmpty()) {
ReleaseMediaCodecBridge();
return STATUS_FAILURE;
}
// If we cannot find a key frame in cache, browser seek is needed.
bool next_video_data_is_iframe = SetCurrentFrameToPreviouslyCachedKeyFrame();
if (!next_video_data_is_iframe)
return STATUS_KEY_FRAME_REQUIRED;
bool is_secure = is_content_encrypted() && drm_bridge() &&
drm_bridge()->IsProtectedSurfaceRequired();
media_codec_bridge_.reset(VideoCodecBridge::CreateDecoder(
video_codec_, is_secure, gfx::Size(config_width_, config_height_),
surface_.j_surface().obj(), GetMediaCrypto().obj()));
if (!media_codec_bridge_)
return STATUS_FAILURE;
request_resources_cb_.Run();
return STATUS_SUCCESS;
}
bool VideoDecoderJob::UpdateOutputFormat() {
if (!media_codec_bridge_)
return false;
int prev_output_width = output_width_;
int prev_output_height = output_height_;
// See b/18224769. The values reported from MediaCodecBridge::GetOutputFormat
// correspond to the actual video frame size, but this is not necessarily the
// size that should be output.
output_width_ = config_width_;
output_height_ = config_height_;
return (output_width_ != prev_output_width) ||
(output_height_ != prev_output_height);
}
bool VideoDecoderJob::IsProtectedSurfaceRequired() {
return is_content_encrypted() && drm_bridge() &&
drm_bridge()->IsProtectedSurfaceRequired();
}
} // namespace media
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