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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/filters/decrypting_video_decoder.h" | 5 #include "media/filters/decrypting_video_decoder.h" |
| 6 | 6 |
| 7 #include "base/bind.h" | 7 #include "base/bind.h" |
| 8 #include "base/callback_helpers.h" | 8 #include "base/callback_helpers.h" |
| 9 #include "base/debug/trace_event.h" | 9 #include "base/debug/trace_event.h" |
| 10 #include "base/location.h" | 10 #include "base/location.h" |
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| 73 | 73 |
| 74 decode_cb_ = BindToCurrentLoop(decode_cb); | 74 decode_cb_ = BindToCurrentLoop(decode_cb); |
| 75 | 75 |
| 76 if (state_ == kError) { | 76 if (state_ == kError) { |
| 77 base::ResetAndReturn(&decode_cb_).Run(kDecodeError, NULL); | 77 base::ResetAndReturn(&decode_cb_).Run(kDecodeError, NULL); |
| 78 return; | 78 return; |
| 79 } | 79 } |
| 80 | 80 |
| 81 // Return empty frames if decoding has finished. | 81 // Return empty frames if decoding has finished. |
| 82 if (state_ == kDecodeFinished) { | 82 if (state_ == kDecodeFinished) { |
| 83 base::ResetAndReturn(&decode_cb_).Run(kOk, VideoFrame::CreateEmptyFrame()); | 83 base::ResetAndReturn(&decode_cb_).Run(kOk, VideoFrame::CreateEOSFrame()); |
| 84 return; | 84 return; |
| 85 } | 85 } |
| 86 | 86 |
| 87 pending_buffer_to_decode_ = buffer; | 87 pending_buffer_to_decode_ = buffer; |
| 88 state_ = kPendingDecode; | 88 state_ = kPendingDecode; |
| 89 DecodePendingBuffer(); | 89 DecodePendingBuffer(); |
| 90 } | 90 } |
| 91 | 91 |
| 92 void DecryptingVideoDecoder::Reset(const base::Closure& closure) { | 92 void DecryptingVideoDecoder::Reset(const base::Closure& closure) { |
| 93 DVLOG(2) << "Reset() - state: " << state_; | 93 DVLOG(2) << "Reset() - state: " << state_; |
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| 275 | 275 |
| 276 state_ = kWaitingForKey; | 276 state_ = kWaitingForKey; |
| 277 return; | 277 return; |
| 278 } | 278 } |
| 279 | 279 |
| 280 if (status == Decryptor::kNeedMoreData) { | 280 if (status == Decryptor::kNeedMoreData) { |
| 281 DVLOG(2) << "DeliverFrame() - kNeedMoreData"; | 281 DVLOG(2) << "DeliverFrame() - kNeedMoreData"; |
| 282 if (scoped_pending_buffer_to_decode->end_of_stream()) { | 282 if (scoped_pending_buffer_to_decode->end_of_stream()) { |
| 283 state_ = kDecodeFinished; | 283 state_ = kDecodeFinished; |
| 284 base::ResetAndReturn(&decode_cb_).Run( | 284 base::ResetAndReturn(&decode_cb_).Run( |
| 285 kOk, media::VideoFrame::CreateEmptyFrame()); | 285 kOk, media::VideoFrame::CreateEOSFrame()); |
| 286 return; | 286 return; |
| 287 } | 287 } |
| 288 | 288 |
| 289 state_ = kIdle; | 289 state_ = kIdle; |
| 290 base::ResetAndReturn(&decode_cb_).Run(kNotEnoughData, NULL); | 290 base::ResetAndReturn(&decode_cb_).Run(kNotEnoughData, NULL); |
| 291 return; | 291 return; |
| 292 } | 292 } |
| 293 | 293 |
| 294 DCHECK_EQ(status, Decryptor::kSuccess); | 294 DCHECK_EQ(status, Decryptor::kSuccess); |
| 295 // No frame returned with kSuccess should be end-of-stream frame. | 295 // No frame returned with kSuccess should be end-of-stream frame. |
| 296 DCHECK(!frame->IsEndOfStream()); | 296 DCHECK(!frame->end_of_stream()); |
| 297 state_ = kIdle; | 297 state_ = kIdle; |
| 298 base::ResetAndReturn(&decode_cb_).Run(kOk, frame); | 298 base::ResetAndReturn(&decode_cb_).Run(kOk, frame); |
| 299 } | 299 } |
| 300 | 300 |
| 301 void DecryptingVideoDecoder::OnKeyAdded() { | 301 void DecryptingVideoDecoder::OnKeyAdded() { |
| 302 DVLOG(2) << "OnKeyAdded()"; | 302 DVLOG(2) << "OnKeyAdded()"; |
| 303 DCHECK(message_loop_->BelongsToCurrentThread()); | 303 DCHECK(message_loop_->BelongsToCurrentThread()); |
| 304 | 304 |
| 305 if (state_ == kPendingDecode) { | 305 if (state_ == kPendingDecode) { |
| 306 key_added_while_decode_pending_ = true; | 306 key_added_while_decode_pending_ = true; |
| 307 return; | 307 return; |
| 308 } | 308 } |
| 309 | 309 |
| 310 if (state_ == kWaitingForKey) { | 310 if (state_ == kWaitingForKey) { |
| 311 state_ = kPendingDecode; | 311 state_ = kPendingDecode; |
| 312 DecodePendingBuffer(); | 312 DecodePendingBuffer(); |
| 313 } | 313 } |
| 314 } | 314 } |
| 315 | 315 |
| 316 void DecryptingVideoDecoder::DoReset() { | 316 void DecryptingVideoDecoder::DoReset() { |
| 317 DCHECK(init_cb_.is_null()); | 317 DCHECK(init_cb_.is_null()); |
| 318 DCHECK(decode_cb_.is_null()); | 318 DCHECK(decode_cb_.is_null()); |
| 319 state_ = kIdle; | 319 state_ = kIdle; |
| 320 base::ResetAndReturn(&reset_cb_).Run(); | 320 base::ResetAndReturn(&reset_cb_).Run(); |
| 321 } | 321 } |
| 322 | 322 |
| 323 } // namespace media | 323 } // namespace media |
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