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| 1 // Copyright 2013 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 #include <stdlib.h> | |
| 6 #include <string.h> | |
| 7 | |
| 8 #include "ppapi/c/pp_rect.h" | |
| 9 #include "ppapi/c/pp_resource.h" | |
| 10 #include "ppapi/c/pp_size.h" | |
| 11 #include "ppapi/c/ppb_core.h" | |
| 12 #include "ppapi/c/ppb_graphics_2d.h" | |
| 13 #include "ppapi/c/ppb_image_data.h" | |
| 14 #include "ppapi/c/ppb_instance.h" | |
| 15 #include "ppapi/c/ppb_view.h" | |
| 16 #include "ppapi/cpp/image_data.h" | |
| 17 | |
| 18 #include "ppapi_simple/ps.h" | |
| 19 #include "ppapi_simple/ps_context_2d.h" | |
| 20 #include "ppapi_simple/ps_event.h" | |
| 21 #include "ppapi_simple/ps_instance.h" | |
| 22 #include "ppapi_simple/ps_interface.h" | |
| 23 | |
| 24 PSContext2D_t* PSContext2DAllocate(PP_ImageDataFormat format) { | |
| 25 PSContext2D_t* ctx = (PSContext2D_t*) malloc(sizeof(PSContext2D_t)); | |
| 26 memset(ctx, 0, sizeof(PSContext2D_t)); | |
| 27 | |
| 28 ctx->format = format; | |
| 29 return ctx; | |
| 30 } | |
| 31 | |
| 32 void PSContext2DFree(PSContext2D_t* ctx) { | |
| 33 if (ctx->graphic_2d) { | |
| 34 PSInterfaceCore()->ReleaseResource(ctx->graphic_2d); | |
| 35 ctx->graphic_2d = 0; | |
| 36 } | |
| 37 if (ctx->image) { | |
| 38 PSInterfaceCore()->ReleaseResource(ctx->image); | |
| 39 ctx->image = 0; | |
| 40 } | |
| 41 free(ctx); | |
| 42 } | |
| 43 | |
| 44 PP_ImageDataFormat PSContext2DGetNativeImageDataFormat() { | |
| 45 return PSInterfaceImageData()->GetNativeImageDataFormat(); | |
| 46 } | |
| 47 | |
| 48 // Update the 2D context if the message is appropriate, returning non-zero | |
| 49 // if the event was consumed. | |
| 50 int PSContext2DHandleEvent(PSContext2D_t* ctx, PSEvent* event) { | |
| 51 switch(event->type) { | |
| 52 case PSE_INSTANCE_DIDCHANGEVIEW: { | |
| 53 struct PP_Rect rect; | |
| 54 | |
| 55 PSInterfaceView()->GetRect(event->as_resource, &rect); | |
| 56 PSInterfaceCore()->ReleaseResource(ctx->graphic_2d); | |
| 57 ctx->bound = 0; | |
| 58 ctx->width = rect.size.width; | |
| 59 ctx->height = rect.size.height; | |
| 60 | |
| 61 // Create an opaque graphic context of the specified size. | |
| 62 ctx->graphic_2d = | |
| 63 PSInterfaceGraphics2D()->Create(PSGetInstanceId(), &rect.size, | |
| 64 PP_TRUE); | |
| 65 | |
| 66 // Bind the context to so that draws will be visible. | |
| 67 if (ctx->graphic_2d) { | |
| 68 ctx->bound = | |
| 69 PSInterfaceInstance()->BindGraphics(PSGetInstanceId(), | |
| 70 ctx->graphic_2d); | |
| 71 } | |
| 72 | |
| 73 // Typically this resource would not be allocated yet, but just in case | |
| 74 // throw it away, to force a new allocation when GetBuffer is called. | |
| 75 if (ctx->image) { | |
| 76 PSInterfaceCore()->ReleaseResource(ctx->image); | |
| 77 ctx->image = 0; | |
| 78 } | |
| 79 | |
| 80 return 1; | |
| 81 } | |
| 82 default: break; | |
| 83 } | |
| 84 | |
| 85 return 0; | |
| 86 } | |
| 87 | |
| 88 | |
| 89 // Allocates (if needed) a new image context which will be swapped in when | |
| 90 // drawing is complete. PSContextGetBuffer and PSContext2DSwapBuffer | |
| 91 // implemented the suggested image/graphic_2d use specified in the | |
| 92 // ppb_graphics_2d header. | |
| 93 int PSContext2DGetBuffer(PSContext2D_t* ctx) { | |
| 94 if (!ctx->bound) return 0; | |
| 95 | |
| 96 // Check if we are already holding an image | |
| 97 if (ctx->image) return 1; | |
| 98 | |
| 99 PP_Size size; | |
| 100 size.width = ctx->width; | |
| 101 size.height = ctx->height; | |
| 102 | |
| 103 // Allocate a new image resource with the specified size and format, but | |
| 104 // do not ZERO out the buffer first since we will fill it. | |
| 105 PP_Resource image = | |
| 106 PSInterfaceImageData()->Create(PSGetInstanceId(), ctx->format, &size, | |
| 107 PP_FALSE); | |
| 108 | |
| 109 if (0 == image) { | |
| 110 PSInstance::GetInstance()->Error("Unable to create 2D image.\n"); | |
| 111 return 0; | |
| 112 } | |
| 113 | |
| 114 // Get the stride | |
| 115 struct PP_ImageDataDesc desc; | |
| 116 PSInterfaceImageData()->Describe(image, &desc); | |
| 117 | |
| 118 ctx->image = image; | |
| 119 ctx->data = static_cast<uint32_t*>(PSInterfaceImageData()->Map(image)); | |
| 120 ctx->stride = desc.stride; | |
| 121 return 1; | |
| 122 } | |
| 123 | |
| 124 int PSContext2DSwapBuffer(PSContext2D_t* ctx) { | |
| 125 if (ctx->bound && ctx->image) { | |
| 126 PSInterfaceImageData()->Unmap(ctx->image); | |
| 127 PSInterfaceGraphics2D()->ReplaceContents(ctx->graphic_2d, ctx->image); | |
| 128 PSInterfaceGraphics2D()->Flush(ctx->graphic_2d, PP_BlockUntilComplete()); | |
| 129 PSInterfaceCore()->ReleaseResource(ctx->image); | |
| 130 | |
| 131 ctx->image = 0; | |
| 132 ctx->stride = 0; | |
| 133 ctx->data = NULL; | |
| 134 return 1; | |
| 135 } | |
| 136 return 0; | |
| 137 } | |
| 138 | |
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Chromium Code Reviews
Issue 914983003:
[NaCl SDK] Switch ppapi_simple to C library (Closed)
Base URL: https://chromium.googlesource.com/chromium/src.git@master