Index: webkit/media/crypto/ppapi/ffmpeg_video_decoder.h |
diff --git a/webkit/media/crypto/ppapi/ffmpeg_video_decoder.h b/webkit/media/crypto/ppapi/ffmpeg_video_decoder.h |
new file mode 100644 |
index 0000000000000000000000000000000000000000..0ea21db460eb36318209f3e79648ce96679fb419 |
--- /dev/null |
+++ b/webkit/media/crypto/ppapi/ffmpeg_video_decoder.h |
@@ -0,0 +1,64 @@ |
+// Copyright (c) 2012 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. |
+ |
+#ifndef WEBKIT_MEDIA_CRYPTO_PPAPI_FFMPEG_VIDEO_DECODER_H_ |
+#define WEBKIT_MEDIA_CRYPTO_PPAPI_FFMPEG_VIDEO_DECODER_H_ |
+ |
+#include "base/basictypes.h" |
+#include "base/compiler_specific.h" |
+#include "base/memory/ref_counted.h" |
+#include "webkit/media/crypto/ppapi/content_decryption_module.h" |
+ |
+struct AVCodecContext; |
+struct AVFrame; |
+ |
+namespace webkit_media { |
+ |
+static const uint32_t kBufferAlignment = 32; |
ddorwin
2012/10/13 03:54:42
media/base has constants for these.
Tom Finegan
2012/10/13 23:47:26
The only ones I can find are in .cc files. Should
|
+static const uint32_t kBufferPadBytes = kBufferAlignment - 1; |
+static const int kDecodeThreads = 2; |
+ |
+bool IsValidConfig(cdm::VideoFormat format, const cdm::Size& data_size); |
+ |
+class FFmpegVideoDecoder { |
ddorwin
2012/10/13 03:54:42
I worry about having identically named classes and
Tom Finegan
2012/10/13 23:47:26
Yeah, I use cs.chromium.org a lot... I can see tha
|
+ public: |
+ FFmpegVideoDecoder(cdm::Allocator* allocator); |
+ ~FFmpegVideoDecoder(); |
+ bool Initialize(const cdm::VideoDecoderConfig& config); |
+ void Deinitialize(); |
+ void Reset(); |
+ |
+ |
ddorwin
2012/10/13 03:54:42
remove line
Tom Finegan
2012/10/13 23:47:26
Done.
|
+ // Decodes |compressed_frame|, and stores decompressed frame in |
+ //|decompressed_frame| when an output frame is available. Returns true when |
ddorwin
2012/10/13 03:54:42
param name does not match
Tom Finegan
2012/10/13 23:47:26
Done.
|
+ // when successful. |
+ // Note: This method can return true without providing an output frame. This |
ddorwin
2012/10/13 03:54:42
with a null |decoded_frame|.
Tom Finegan
2012/10/13 23:47:26
Done.
|
+ // occurs when the decoder needs more data to produce an output video frame. |
+ // Returns false upon failure. |
+ bool DecodeFrame(const uint8_t* compressed_frame, |
+ int32_t frame_length, |
ddorwin
2012/10/13 03:54:42
compressed_frame_size?
Tom Finegan
2012/10/13 23:47:26
Done.
|
+ int64_t timestamp, |
+ cdm::VideoFrame* decoded_frame); |
ddorwin
2012/10/13 03:54:42
I think this CL shows we have a fundamental proble
Tom Finegan
2012/10/13 23:47:26
The video frame memory is allocated using the allo
Tom Finegan
2012/10/14 00:41:11
Actually, thinking about this some more, maybe thi
|
+ |
+ // Callback called from within FFmpeg to allocate a buffer based on |
+ // the dimensions of |codec_context|. See AVCodecContext.get_buffer |
+ // documentation inside FFmpeg. |
+ int GetVideoBuffer(AVCodecContext *codec_context, AVFrame* frame); |
ddorwin
2012/10/13 03:54:42
*<space>
Tom Finegan
2012/10/13 23:47:26
Done.
|
+ |
+ private: |
+ void ReleaseFFmpegResources(); |
+ |
+ // FFmpeg structures owned by this object. |
+ AVCodecContext* codec_context_; |
+ AVFrame* av_frame_; |
+ |
+ cdm::Allocator* const allocator_; |
+ cdm::VideoDecoderConfig config_; |
+ |
+ DISALLOW_COPY_AND_ASSIGN(FFmpegVideoDecoder); |
+}; |
+ |
+} // namespace webkit_media |
+ |
+#endif // WEBKIT_MEDIA_CRYPTO_PPAPI_FFMPEG_VIDEO_DECODER_H_ |