#ifdef UNSAFE_BUFFERS_BUILD
// TODO(crbug.com/351564777): Remove this and convert code to safer constructs.
#pragma allow_unsafe_buffers
#endif
/* Copyright 2012 The Chromium Authors
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*/
#include <stdint.h>
#include <stdlib.h>
#include <string.h>
#include "ppapi/c/pp_completion_callback.h"
#include "ppapi/c/pp_errors.h"
#include "ppapi/c/pp_instance.h"
#include "ppapi/c/pp_module.h"
#include "ppapi/c/pp_rect.h"
#include "ppapi/c/pp_var.h"
#include "ppapi/c/ppb.h"
#include "ppapi/c/ppb_core.h"
#include "ppapi/c/ppb_graphics_2d.h"
#include "ppapi/c/ppb_image_data.h"
#include "ppapi/c/ppb_instance.h"
#include "ppapi/c/ppb_view.h"
#include "ppapi/c/ppp.h"
#include "ppapi/c/ppp_instance.h"
PPB_GetInterface g_get_browser_interface = NULL;
const PPB_Core* g_core_interface;
const PPB_Graphics2D* g_graphics_2d_interface;
const PPB_ImageData* g_image_data_interface;
const PPB_Instance* g_instance_interface;
const PPB_View* g_view_interface;
/* PPP_Instance implementation -----------------------------------------------*/
struct InstanceInfo {
PP_Instance pp_instance;
struct PP_Size last_size;
PP_Resource graphics;
struct InstanceInfo* next;
};
/** Linked list of all live instances. */
struct InstanceInfo* all_instances = NULL;
/** Returns a refed resource corresponding to the created graphics 2d. */
PP_Resource MakeAndBindGraphics2D(PP_Instance instance,
const struct PP_Size* size) {
PP_Resource graphics;
graphics = g_graphics_2d_interface->Create(instance, size, PP_FALSE);
if (!graphics)
return 0;
if (!g_instance_interface->BindGraphics(instance, graphics)) {
g_core_interface->ReleaseResource(graphics);
return 0;
}
return graphics;
}
void FlushCompletionCallback(void* user_data, int32_t result) {
/* Don't need to do anything here. */
}
void Repaint(struct InstanceInfo* instance, const struct PP_Size* size) {
PP_Resource image;
struct PP_ImageDataDesc image_desc;
uint32_t* image_data;
int num_words, i;
/* Ensure the graphics 2d is ready. */
if (!instance->graphics) {
instance->graphics = MakeAndBindGraphics2D(instance->pp_instance, size);
if (!instance->graphics)
return;
}
/* Create image data to paint into. */
image = g_image_data_interface->Create(
instance->pp_instance, PP_IMAGEDATAFORMAT_BGRA_PREMUL, size, PP_TRUE);
if (!image)
return;
g_image_data_interface->Describe(image, &image_desc);
/* Fill the image with blue. */
image_data = (uint32_t*)g_image_data_interface->Map(image);
if (!image_data) {
g_core_interface->ReleaseResource(image);
return;
}
num_words = image_desc.stride * size->height / 4;
for (i = 0; i < num_words; i++)
image_data[i] = 0xFF0000FF;
/* Paint image to graphics 2d. */
g_graphics_2d_interface->ReplaceContents(instance->graphics, image);
g_graphics_2d_interface->Flush(instance->graphics,
PP_MakeCompletionCallback(&FlushCompletionCallback, NULL));
g_core_interface->ReleaseResource(image);
}
/** Returns the info for the given instance, or NULL if it's not found. */
struct InstanceInfo* FindInstance(PP_Instance instance) {
struct InstanceInfo* cur = all_instances;
while (cur) {
if (cur->pp_instance == instance)
return cur;
cur = cur->next;
}
return NULL;
}
PP_Bool Instance_DidCreate(PP_Instance instance,
uint32_t argc,
const char* argn[],
const char* argv[]) {
struct InstanceInfo* info =
(struct InstanceInfo*)malloc(sizeof(struct InstanceInfo));
info->pp_instance = instance;
info->last_size.width = 0;
info->last_size.height = 0;
info->graphics = 0;
/* Insert into linked list of live instances. */
info->next = all_instances;
all_instances = info;
return PP_TRUE;
}
void Instance_DidDestroy(PP_Instance instance) {
/* Find the matching item in the linked list, delete it, and patch the
* links.
*/
struct InstanceInfo** prev_ptr = &all_instances;
struct InstanceInfo* cur = all_instances;
while (cur) {
if (instance == cur->pp_instance) {
*prev_ptr = cur->next;
g_core_interface->ReleaseResource(cur->graphics);
free(cur);
return;
}
prev_ptr = &cur->next;
cur = cur->next;
}
}
void Instance_DidChangeView(PP_Instance pp_instance,
PP_Resource view) {
struct PP_Rect position;
struct InstanceInfo* info = FindInstance(pp_instance);
if (!info)
return;
if (g_view_interface->GetRect(view, &position) == PP_FALSE)
return;
if (info->last_size.width != position.size.width ||
info->last_size.height != position.size.height) {
/* Got a resize, repaint the plugin. */
Repaint(info, &position.size);
info->last_size.width = position.size.width;
info->last_size.height = position.size.height;
}
}
void Instance_DidChangeFocus(PP_Instance pp_instance, PP_Bool has_focus) {
}
PP_Bool Instance_HandleDocumentLoad(PP_Instance pp_instance,
PP_Resource pp_url_loader) {
return PP_FALSE;
}
static PPP_Instance instance_interface = {
&Instance_DidCreate,
&Instance_DidDestroy,
&Instance_DidChangeView,
&Instance_DidChangeFocus,
&Instance_HandleDocumentLoad
};
/* Global entrypoints --------------------------------------------------------*/
PP_EXPORT int32_t PPP_InitializeModule(PP_Module module,
PPB_GetInterface get_browser_interface) {
g_get_browser_interface = get_browser_interface;
g_core_interface = (const PPB_Core*)
get_browser_interface(PPB_CORE_INTERFACE);
g_instance_interface = (const PPB_Instance*)
get_browser_interface(PPB_INSTANCE_INTERFACE);
g_image_data_interface = (const PPB_ImageData*)
get_browser_interface(PPB_IMAGEDATA_INTERFACE);
g_graphics_2d_interface = (const PPB_Graphics2D*)
get_browser_interface(PPB_GRAPHICS_2D_INTERFACE);
g_view_interface = (const PPB_View*)
get_browser_interface(PPB_VIEW_INTERFACE);
if (!g_core_interface || !g_instance_interface || !g_image_data_interface ||
!g_graphics_2d_interface || !g_view_interface)
return -1;
return PP_OK;
}
PP_EXPORT void PPP_ShutdownModule() {
}
PP_EXPORT const void* PPP_GetInterface(const char* interface_name) {
if (strcmp(interface_name, PPP_INSTANCE_INTERFACE) == 0)
return &instance_interface;
return NULL;
}
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