media/video/picture.h

   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/geometry/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                 uint32 internal_texture_id);
  25   PictureBuffer(int32 id,
  26                 gfx::Size size,
  27                 uint32 texture_id,
  28                 const gpu::Mailbox& texture_mailbox);
  29
  30   // Returns the client-specified id of the buffer.
  31   int32 id() const {
  32     return id_;
  33   }
  34
  35   // Returns the size of the buffer.
  36   gfx::Size size() const {
  37     return size_;
  38   }
  39
  40   // Returns the id of the texture.
  41   // NOTE: The texture id in the renderer process corresponds to a different
  42   // texture id in the GPU process.
  43   uint32 texture_id() const {
  44     return texture_id_;
  45   }
  46
  47   uint32 internal_texture_id() const { return internal_texture_id_; }
  48
  49   const gpu::Mailbox& texture_mailbox() const {
  50     return texture_mailbox_;
  51   }
  52
  53  private:
  54   int32 id_;
  55   gfx::Size size_;
  56   uint32 texture_id_;
  57   uint32 internal_texture_id_;
  58   gpu::Mailbox texture_mailbox_;
  59 };
  60
  61 // A decoded picture frame.
  62 // This is the media-namespace equivalent of PP_Picture_Dev.
  63 class MEDIA_EXPORT Picture {
  64  public:
  65   Picture(int32 picture_buffer_id,
  66           int32 bitstream_buffer_id,
  67           const gfx::Rect& visible_rect,
  68           bool allow_overlay);
  69
  70   // Returns the id of the picture buffer where this picture is contained.
  71   int32 picture_buffer_id() const {
  72     return picture_buffer_id_;
  73   }
  74
  75   // Returns the id of the bitstream buffer from which this frame was decoded.
  76   int32 bitstream_buffer_id() const {
  77     return bitstream_buffer_id_;
  78   }
  79
  80   void set_bitstream_buffer_id(int32 bitstream_buffer_id) {
  81     bitstream_buffer_id_ = bitstream_buffer_id;
  82   }
  83
  84   // Returns the visible rectangle of the picture. Its size may be smaller
  85   // than the size of the PictureBuffer, as it is the only visible part of the
  86   // Picture contained in the PictureBuffer.
  87   gfx::Rect visible_rect() const { return visible_rect_; }
  88
  89   bool allow_overlay() const { return allow_overlay_; }
  90
  91  private:
  92   int32 picture_buffer_id_;
  93   int32 bitstream_buffer_id_;
  94   gfx::Rect visible_rect_;
  95   bool allow_overlay_;
  96 };
  97
  98 }  // namespace media
  99
 100 #endif  // MEDIA_VIDEO_PICTURE_H_