michael@0: // Copyright (c) 2010 The Chromium Authors. All rights reserved.
michael@0: // Use of this source code is governed by a BSD-style license that can be
michael@0: // found in the LICENSE file.
michael@0: 
michael@0: #ifndef MEDIA_BASE_YUV_CONVERT_H_
michael@0: #define MEDIA_BASE_YUV_CONVERT_H_
michael@0: 
michael@0: #include "chromium_types.h"
michael@0: #include "gfxCore.h"
michael@0: 
michael@0: namespace mozilla {
michael@0: 
michael@0: namespace gfx {
michael@0:  
michael@0: // Type of YUV surface.
michael@0: // The value of these enums matter as they are used to shift vertical indices.
michael@0: enum YUVType {
michael@0:   YV12 = 0,           // YV12 is half width and half height chroma channels.
michael@0:   YV16 = 1,           // YV16 is half width and full height chroma channels.
michael@0:   YV24 = 2            // YV24 is full width and full height chroma channels.
michael@0: };
michael@0: 
michael@0: // Mirror means flip the image horizontally, as in looking in a mirror.
michael@0: // Rotate happens after mirroring.
michael@0: enum Rotate {
michael@0:   ROTATE_0,           // Rotation off.
michael@0:   ROTATE_90,          // Rotate clockwise.
michael@0:   ROTATE_180,         // Rotate upside down.
michael@0:   ROTATE_270,         // Rotate counter clockwise.
michael@0:   MIRROR_ROTATE_0,    // Mirror horizontally.
michael@0:   MIRROR_ROTATE_90,   // Mirror then Rotate clockwise.
michael@0:   MIRROR_ROTATE_180,  // Mirror vertically.
michael@0:   MIRROR_ROTATE_270   // Transpose.
michael@0: };
michael@0: 
michael@0: // Filter affects how scaling looks.
michael@0: enum ScaleFilter {
michael@0:   FILTER_NONE = 0,        // No filter (point sampled).
michael@0:   FILTER_BILINEAR_H = 1,  // Bilinear horizontal filter.
michael@0:   FILTER_BILINEAR_V = 2,  // Bilinear vertical filter.
michael@0:   FILTER_BILINEAR = 3     // Bilinear filter.
michael@0: };
michael@0: 
michael@0: NS_GFX_(YUVType) TypeFromSize(int ywidth, int yheight, int cbcrwidth, int cbcrheight);
michael@0: 
michael@0: // Convert a frame of YUV to 32 bit ARGB.
michael@0: // Pass in YV16/YV12 depending on source format
michael@0: NS_GFX_(void) ConvertYCbCrToRGB32(const uint8* yplane,
michael@0:                                   const uint8* uplane,
michael@0:                                   const uint8* vplane,
michael@0:                                   uint8* rgbframe,
michael@0:                                   int pic_x,
michael@0:                                   int pic_y,
michael@0:                                   int pic_width,
michael@0:                                   int pic_height,
michael@0:                                   int ystride,
michael@0:                                   int uvstride,
michael@0:                                   int rgbstride,
michael@0:                                   YUVType yuv_type);
michael@0: 
michael@0: // Scale a frame of YUV to 32 bit ARGB.
michael@0: // Supports rotation and mirroring.
michael@0: NS_GFX_(void) ScaleYCbCrToRGB32(const uint8* yplane,
michael@0:                                 const uint8* uplane,
michael@0:                                 const uint8* vplane,
michael@0:                                 uint8* rgbframe,
michael@0:                                 int source_width,
michael@0:                                 int source_height,
michael@0:                                 int width,
michael@0:                                 int height,
michael@0:                                 int ystride,
michael@0:                                 int uvstride,
michael@0:                                 int rgbstride,
michael@0:                                 YUVType yuv_type,
michael@0:                                 Rotate view_rotate,
michael@0:                                 ScaleFilter filter);
michael@0: 
michael@0: }  // namespace gfx
michael@0: }  // namespace mozilla
michael@0:  
michael@0: #endif  // MEDIA_BASE_YUV_CONVERT_H_