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      1 // Copyright (c) 2011 The Chromium Authors. All rights reserved.
      2 // Use of this source code is governed by a BSD-style license that can be
      3 // found in the LICENSE file.
      4 
      5 #ifndef MEDIA_VIDEO_PICTURE_H_
      6 #define MEDIA_VIDEO_PICTURE_H_
      7 
      8 #include "base/basictypes.h"
      9 #include "gpu/command_buffer/common/mailbox.h"
     10 #include "media/base/media_export.h"
     11 #include "ui/gfx/geometry/rect.h"
     12 #include "ui/gfx/size.h"
     13 
     14 namespace media {
     15 
     16 // A picture buffer that is composed of a GLES2 texture.
     17 // This is the media-namespace equivalent of PP_PictureBuffer_Dev.
     18 class MEDIA_EXPORT PictureBuffer {
     19  public:
     20   PictureBuffer(int32 id, gfx::Size size, uint32 texture_id);
     21   PictureBuffer(int32 id,
     22                 gfx::Size size,
     23                 uint32 texture_id,
     24                 const gpu::Mailbox& texture_mailbox);
     25 
     26   // Returns the client-specified id of the buffer.
     27   int32 id() const {
     28     return id_;
     29   }
     30 
     31   // Returns the size of the buffer.
     32   gfx::Size size() const {
     33     return size_;
     34   }
     35 
     36   // Returns the id of the texture.
     37   // NOTE: The texture id in the renderer process corresponds to a different
     38   // texture id in the GPU process.
     39   uint32 texture_id() const {
     40     return texture_id_;
     41   }
     42 
     43   const gpu::Mailbox& texture_mailbox() const {
     44     return texture_mailbox_;
     45   }
     46 
     47  private:
     48   int32 id_;
     49   gfx::Size size_;
     50   uint32 texture_id_;
     51   gpu::Mailbox texture_mailbox_;
     52 };
     53 
     54 // A decoded picture frame.
     55 // This is the media-namespace equivalent of PP_Picture_Dev.
     56 class MEDIA_EXPORT Picture {
     57  public:
     58   Picture(int32 picture_buffer_id,
     59           int32 bitstream_buffer_id,
     60           const gfx::Rect& visible_rect);
     61 
     62   // Returns the id of the picture buffer where this picture is contained.
     63   int32 picture_buffer_id() const {
     64     return picture_buffer_id_;
     65   }
     66 
     67   // Returns the id of the bitstream buffer from which this frame was decoded.
     68   int32 bitstream_buffer_id() const {
     69     return bitstream_buffer_id_;
     70   }
     71 
     72   void set_bitstream_buffer_id(int32 bitstream_buffer_id) {
     73     bitstream_buffer_id_ = bitstream_buffer_id;
     74   }
     75 
     76   // Returns the visible rectangle of the picture. Its size may be smaller
     77   // than the size of the PictureBuffer, as it is the only visible part of the
     78   // Picture contained in the PictureBuffer.
     79   gfx::Rect visible_rect() const { return visible_rect_; }
     80 
     81  private:
     82   int32 picture_buffer_id_;
     83   int32 bitstream_buffer_id_;
     84   gfx::Rect visible_rect_;
     85 };
     86 
     87 }  // namespace media
     88 
     89 #endif  // MEDIA_VIDEO_PICTURE_H_
     90