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| 1 // Copyright 2015 The Chromium Authors. All rights reserved. | 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 | 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 [DartPackage="mojo_services"] | 5 [DartPackage="mojo_services"] |
| 6 module mojo.media; | 6 module mojo.media; |
| 7 | 7 |
| 8 import "mojo/services/media/common/interfaces/media_common.mojom"; | 8 import "mojo/services/media/common/interfaces/media_common.mojom"; |
| 9 | 9 |
| 10 // MediaPacketRegion | 10 // MediaPacketRegion |
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| 70 // other side of the pipe using the SendPacket method and be informed about when | 70 // other side of the pipe using the SendPacket method and be informed about when |
| 71 // the media has been consumed via the SendPacket callback they provide. | 71 // the media has been consumed via the SendPacket callback they provide. |
| 72 // Finally, the pipeline may be flushed using the Flush method. | 72 // Finally, the pipeline may be flushed using the Flush method. |
| 73 interface MediaPipe { | 73 interface MediaPipe { |
| 74 const uint64 kMaxBufferLen = 0x3FFFFFFFFFFFFFFF; | 74 const uint64 kMaxBufferLen = 0x3FFFFFFFFFFFFFFF; |
| 75 | 75 |
| 76 // An enumeration used to indicate the ultimate fate of packets sent across | 76 // An enumeration used to indicate the ultimate fate of packets sent across |
| 77 // the pipe using the SendPacket method. | 77 // the pipe using the SendPacket method. |
| 78 enum SendResult { | 78 enum SendResult { |
| 79 CONSUMED, // Media was completely consumed. | 79 CONSUMED, // Media was completely consumed. |
| 80 FLUSHED, // Some or all of the media was flushed before being consumed. | 80 FLUSHED, // Some or all of the media was flushed before being consumed. |
| 81 }; | 81 }; |
| 82 | 82 |
| 83 // Sets the shared buffer in which sent Packet payloads will be located. | 83 // Sets the shared buffer in which sent Packet payloads will be located. |
| 84 SetBuffer(handle<shared_buffer> buffer, uint64 size); | 84 SetBuffer(handle<shared_buffer> buffer, uint64 size); |
| 85 | 85 |
| 86 // Place a media packet into the pipeline to be consumed. When the consumer | 86 // Place a media packet into the pipeline to be consumed. When the consumer |
| 87 // is finished with the packet, it will invoke the supplied callback to | 87 // is finished with the packet, it will invoke the supplied callback to |
| 88 // indicate that the region of the shared buffer indicated by the MediaPacket | 88 // indicate that the region of the shared buffer indicated by the MediaPacket |
| 89 // object is now available for new data. In addition, a SendResult will be | 89 // object is now available for new data. In addition, a SendResult will be |
| 90 // providid indicating whether or not the packet was consumed or flushed. | 90 // providid indicating whether or not the packet was consumed or flushed. |
| 91 SendPacket(MediaPacket packet) => (SendResult result); | 91 SendPacket(MediaPacket packet) => (SendResult result); |
| 92 | 92 |
| 93 // Flush the pipe, discarding all queued packets in order (from front to back) | 93 // Flush the pipe, discarding all queued packets in order (from front to back) |
| 94 // as we go. When the flush operation is complete, the provided callback will | 94 // as we go. When the flush operation is complete, the provided callback will |
| 95 // be invoked to indicate that the consumer end of the pipe has finished | 95 // be invoked to indicate that the consumer end of the pipe has finished |
| 96 // flushing and that the pipeline is now empty. | 96 // flushing and that the pipeline is now empty. |
| 97 Flush() => (); | 97 Flush() => (); |
| 98 }; | 98 }; |
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