| // Copyright (c) 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. |
| |
| #ifndef MEDIA_BASE_ANDROID_MEDIA_CODEC_BRIDGE_H_ |
| #define MEDIA_BASE_ANDROID_MEDIA_CODEC_BRIDGE_H_ |
| |
| #include <set> |
| #include <string> |
| #include <vector> |
| |
| #include "base/compiler_specific.h" |
| #include "base/time/time.h" |
| #include "media/base/android/media_codec_util.h" |
| #include "media/base/media_export.h" |
| |
| namespace media { |
| |
| struct SubsampleEntry; |
| |
| // These must be in sync with MediaCodecBridge.MEDIA_CODEC_XXX constants in |
| // MediaCodecBridge.java. |
| enum MediaCodecStatus { |
| MEDIA_CODEC_OK, |
| MEDIA_CODEC_DEQUEUE_INPUT_AGAIN_LATER, |
| MEDIA_CODEC_DEQUEUE_OUTPUT_AGAIN_LATER, |
| MEDIA_CODEC_OUTPUT_BUFFERS_CHANGED, |
| MEDIA_CODEC_OUTPUT_FORMAT_CHANGED, |
| MEDIA_CODEC_INPUT_END_OF_STREAM, |
| MEDIA_CODEC_OUTPUT_END_OF_STREAM, |
| MEDIA_CODEC_NO_KEY, |
| MEDIA_CODEC_ABORT, |
| MEDIA_CODEC_ERROR |
| }; |
| |
| // Interface for wrapping different Android MediaCodec implementations. For |
| // more information on Android MediaCodec, check |
| // http://developer.android.com/reference/android/media/MediaCodec.html |
| // Note: MediaCodec is only available on JB and greater. |
| class MEDIA_EXPORT MediaCodecBridge { |
| public: |
| virtual ~MediaCodecBridge(); |
| |
| // Resets both input and output, all indices previously returned in calls to |
| // DequeueInputBuffer() and DequeueOutputBuffer() become invalid. |
| // Please note that this clears all the inputs in the media codec. In other |
| // words, there will be no outputs until new input is provided. |
| // Returns MEDIA_CODEC_ERROR if an unexpected error happens, or Media_CODEC_OK |
| // otherwise. |
| virtual MediaCodecStatus Reset() = 0; |
| |
| // Calls start() against the media codec instance. Returns whether media |
| // codec was successfully started. |
| virtual bool Start() = 0; |
| |
| // Finishes the decode/encode session. The instance remains active |
| // and ready to be StartAudio/Video()ed again. HOWEVER, due to the buggy |
| // vendor's implementation , b/8125974, Stop() -> StartAudio/Video() may not |
| // work on some devices. For reliability, Stop() -> delete and recreate new |
| // instance -> StartAudio/Video() is recommended. |
| virtual void Stop() = 0; |
| |
| // Used for getting output format. This is valid after DequeueInputBuffer() |
| // returns a format change by returning INFO_OUTPUT_FORMAT_CHANGED |
| virtual void GetOutputFormat(int* width, int* height) = 0; |
| |
| // Used for checking for new sampling rate after DequeueInputBuffer() returns |
| // INFO_OUTPUT_FORMAT_CHANGED |
| virtual int GetOutputSamplingRate() = 0; |
| |
| // Submits a byte array to the given input buffer. Call this after getting an |
| // available buffer from DequeueInputBuffer(). If |data| is NULL, assume the |
| // input buffer has already been populated (but still obey |size|). |
| // |data_size| must be less than kint32max (because Java). |
| virtual MediaCodecStatus QueueInputBuffer( |
| int index, |
| const uint8* data, |
| size_t data_size, |
| const base::TimeDelta& presentation_time) = 0; |
| |
| // Similar to the above call, but submits a buffer that is encrypted. Note: |
| // NULL |subsamples| indicates the whole buffer is encrypted. If |data| is |
| // NULL, assume the input buffer has already been populated (but still obey |
| // |data_size|). |data_size| must be less than kint32max (because Java). |
| MediaCodecStatus QueueSecureInputBuffer( |
| int index, |
| const uint8* data, |
| size_t data_size, |
| const std::string& key_id, |
| const std::string& iv, |
| const std::vector<SubsampleEntry>& subsamples, |
| const base::TimeDelta& presentation_time); |
| |
| // Same QueueSecureInputBuffer overriden for the use with MediaSourcePlayer |
| // and MediaCodecPlayer. |
| // TODO(timav): remove this method and keep only the one above after we |
| // switch to the Spitzer pipeline. |
| virtual MediaCodecStatus QueueSecureInputBuffer( |
| int index, |
| const uint8* data, |
| size_t data_size, |
| const std::vector<char>& key_id, |
| const std::vector<char>& iv, |
| const SubsampleEntry* subsamples, |
| int subsamples_size, |
| const base::TimeDelta& presentation_time) = 0; |
| |
| // Submits an empty buffer with a EOS (END OF STREAM) flag. |
| virtual void QueueEOS(int input_buffer_index) = 0; |
| |
| // Returns: |
| // MEDIA_CODEC_OK if an input buffer is ready to be filled with valid data, |
| // MEDIA_CODEC_ENQUEUE_INPUT_AGAIN_LATER if no such buffer is available, or |
| // MEDIA_CODEC_ERROR if unexpected error happens. |
| // Note: Never use infinite timeout as this would block the decoder thread and |
| // prevent the decoder job from being released. |
| virtual MediaCodecStatus DequeueInputBuffer(const base::TimeDelta& timeout, |
| int* index) = 0; |
| |
| // Dequeues an output buffer, block at most timeout_us microseconds. |
| // Returns the status of this operation. If OK is returned, the output |
| // parameters should be populated. Otherwise, the values of output parameters |
| // should not be used. Output parameters other than index/offset/size are |
| // optional and only set if not NULL. |
| // Note: Never use infinite timeout as this would block the decoder thread and |
| // prevent the decoder job from being released. |
| // TODO(xhwang): Can we drop |end_of_stream| and return |
| // MEDIA_CODEC_OUTPUT_END_OF_STREAM? |
| virtual MediaCodecStatus DequeueOutputBuffer( |
| const base::TimeDelta& timeout, |
| int* index, |
| size_t* offset, |
| size_t* size, |
| base::TimeDelta* presentation_time, |
| bool* end_of_stream, |
| bool* key_frame) = 0; |
| |
| // Returns the buffer to the codec. If you previously specified a surface when |
| // configuring this video decoder you can optionally render the buffer. |
| virtual void ReleaseOutputBuffer(int index, bool render) = 0; |
| |
| // Returns the number of output buffers used by the codec. |
| // TODO(qinmin): this call is deprecated in Lollipop. |
| virtual int GetOutputBuffersCount(); |
| |
| // Returns the capacity of each output buffer used by the codec. |
| // TODO(qinmin): this call is deprecated in Lollipop. |
| virtual size_t GetOutputBuffersCapacity(); |
| |
| // Returns an input buffer's base pointer and capacity. |
| virtual void GetInputBuffer(int input_buffer_index, |
| uint8** data, |
| size_t* capacity) = 0; |
| |
| // Copy |dst_size| bytes from output buffer |index|'s |offset| onwards into |
| // |*dst|. |
| virtual bool CopyFromOutputBuffer(int index, |
| size_t offset, |
| void* dst, |
| int dst_size) = 0; |
| |
| protected: |
| MediaCodecBridge(); |
| |
| // Fills a particular input buffer; returns false if |data_size| exceeds the |
| // input buffer's capacity (and doesn't touch the input buffer in that case). |
| bool FillInputBuffer(int index, |
| const uint8* data, |
| size_t data_size) WARN_UNUSED_RESULT; |
| |
| DISALLOW_COPY_AND_ASSIGN(MediaCodecBridge); |
| }; |
| |
| } // namespace media |
| |
| #endif // MEDIA_BASE_ANDROID_MEDIA_CODEC_BRIDGE_H_ |