gecko-dev/gfx/gl/AndroidNativeWindow.cpp
James Willcox 070c8814c3 Bug 1014614 - Expose Android native window via AndroidNativeWindow wrapper r=blassey
--HG--
extra : rebase_source : e8fef05b2fdc3ef2b7c43a01655f2c7bf3789208
2014-10-21 08:53:00 -05:00

281 lines
7.9 KiB
C++

#ifdef MOZ_WIDGET_ANDROID
#include "AndroidNativeWindow.h"
#include "prlink.h"
// #define ANDROID_NATIVE_WINDOW_DEBUG
#if defined(ANDROID_NATIVE_WINDOW_DEBUG) || defined(DEBUG)
#define ALOG(args...) __android_log_print(ANDROID_LOG_INFO, "AndroidNativeWindow" , ## args)
#else
#define ALOG(args...) ((void)0)
#endif
using namespace mozilla::gfx;
using namespace mozilla::gl;
using namespace mozilla;
class NativeWindowLibrary
{
public:
NativeWindowLibrary()
: fANativeWindow_fromSurface(nullptr)
, fANativeWindow_release(nullptr)
, fANativeWindow_setBuffersGeometry(nullptr)
, fANativeWindow_lock(nullptr)
, fANativeWindow_unlockAndPost(nullptr)
, fANativeWindow_getFormat(nullptr)
, fANativeWindow_getWidth(nullptr)
, fANativeWindow_getHeight(nullptr)
{
PRLibrary* lib = PR_LoadLibrary("libandroid.so");
fANativeWindow_fromSurface = (pfnANativeWindow_fromSurface)PR_FindSymbol(lib, "ANativeWindow_fromSurface");
fANativeWindow_release = (pfnANativeWindow_release)PR_FindSymbol(lib, "ANativeWindow_release");
fANativeWindow_setBuffersGeometry = (pfnANativeWindow_setBuffersGeometry)PR_FindSymbol(lib, "ANativeWindow_setBuffersGeometry");
fANativeWindow_lock = (pfnANativeWindow_lock)PR_FindSymbol(lib, "ANativeWindow_lock");
fANativeWindow_unlockAndPost = (pfnANativeWindow_unlockAndPost)PR_FindSymbol(lib, "ANativeWindow_unlockAndPost");
fANativeWindow_getFormat = (pfnANativeWindow_getFormat)PR_FindSymbol(lib, "ANativeWindow_getFormat");
fANativeWindow_getWidth = (pfnANativeWindow_getWidth)PR_FindSymbol(lib, "ANativeWindow_getWidth");
fANativeWindow_getHeight = (pfnANativeWindow_getHeight)PR_FindSymbol(lib, "ANativeWindow_getHeight");
}
void* ANativeWindow_fromSurface(JNIEnv* aEnv, jobject aSurface) {
ALOG("%s: env=%p, surface=%p\n", __PRETTY_FUNCTION__, aEnv, aSurface);
if (!Initialized()) {
return nullptr;
}
return fANativeWindow_fromSurface(aEnv, aSurface);
}
void ANativeWindow_release(void* aWindow) {
ALOG("%s: window=%p\n", __PRETTY_FUNCTION__, aWindow);
if (!Initialized()) {
return;
}
fANativeWindow_release(aWindow);
}
bool ANativeWindow_setBuffersGeometry(void* aWindow, int32_t aWidth, int32_t aHeight, int32_t aFormat) {
ALOG("%s: window=%p, width=%d, height=%d, format=%d\n", __PRETTY_FUNCTION__, aWindow, aWidth, aHeight, aFormat);
if (!Initialized()) {
return nullptr;
}
return fANativeWindow_setBuffersGeometry(aWindow, aWidth, aHeight, (int32_t)aFormat) == 0;
}
bool ANativeWindow_lock(void* aWindow, void* out_buffer, void*in_out_dirtyBounds) {
ALOG("%s: window=%p, out_buffer=%p, in_out_dirtyBounds=%p\n", __PRETTY_FUNCTION__,
aWindow, out_buffer, in_out_dirtyBounds);
if (!Initialized()) {
return false;
}
return fANativeWindow_lock(aWindow, out_buffer, in_out_dirtyBounds) == 0;
}
bool ANativeWindow_unlockAndPost(void* aWindow) {
ALOG("%s: window=%p\n", __PRETTY_FUNCTION__, aWindow);
if (!Initialized()) {
return false;
}
return fANativeWindow_unlockAndPost(aWindow) == 0;
}
AndroidWindowFormat ANativeWindow_getFormat(void* aWindow) {
ALOG("%s: window=%p\n", __PRETTY_FUNCTION__, aWindow);
if (!Initialized()) {
return AndroidWindowFormat::Unknown;
}
return (AndroidWindowFormat)fANativeWindow_getFormat(aWindow);
}
int32_t ANativeWindow_getWidth(void* aWindow) {
ALOG("%s: window=%p\n", __PRETTY_FUNCTION__, aWindow);
if (!Initialized()) {
return -1;
}
return fANativeWindow_getWidth(aWindow);
}
int32_t ANativeWindow_getHeight(void* aWindow) {
ALOG("%s: window=%p\n", __PRETTY_FUNCTION__, aWindow);
if (!Initialized()) {
return -1;
}
return fANativeWindow_getHeight(aWindow);
}
bool Initialized() {
return fANativeWindow_fromSurface && fANativeWindow_release && fANativeWindow_setBuffersGeometry
&& fANativeWindow_lock && fANativeWindow_unlockAndPost && fANativeWindow_getFormat && fANativeWindow_getWidth
&& fANativeWindow_getHeight;
}
private:
typedef void* (*pfnANativeWindow_fromSurface)(JNIEnv* env, jobject surface);
pfnANativeWindow_fromSurface fANativeWindow_fromSurface;
typedef void (*pfnANativeWindow_release)(void* window);
pfnANativeWindow_release fANativeWindow_release;
typedef int32_t (*pfnANativeWindow_setBuffersGeometry)(void* window, int32_t width, int32_t height, int32_t format);
pfnANativeWindow_setBuffersGeometry fANativeWindow_setBuffersGeometry;
typedef int32_t (*pfnANativeWindow_lock)(void *window, void *out_buffer, void *in_out_dirtyBounds);
pfnANativeWindow_lock fANativeWindow_lock;
typedef int32_t (*pfnANativeWindow_unlockAndPost)(void *window);
pfnANativeWindow_unlockAndPost fANativeWindow_unlockAndPost;
typedef AndroidWindowFormat (*pfnANativeWindow_getFormat)(void* window);
pfnANativeWindow_getFormat fANativeWindow_getFormat;
typedef int32_t (*pfnANativeWindow_getWidth)(void* window);
pfnANativeWindow_getWidth fANativeWindow_getWidth;
typedef int32_t (*pfnANativeWindow_getHeight)(void* window);
pfnANativeWindow_getHeight fANativeWindow_getHeight;
};
static NativeWindowLibrary* sLibrary = nullptr;
static bool
EnsureInit()
{
static bool initialized = false;
if (!initialized) {
if (!sLibrary) {
sLibrary = new NativeWindowLibrary();
}
initialized = sLibrary->Initialized();
}
return initialized;
}
namespace mozilla {
/* static */ AndroidNativeWindow*
AndroidNativeWindow::CreateFromSurface(JNIEnv* aEnv, jobject aSurface)
{
if (!EnsureInit()) {
ALOG("Not initialized");
return nullptr;
}
void* window = sLibrary->ANativeWindow_fromSurface(aEnv, aSurface);
if (!window) {
ALOG("Failed to create window from surface");
return nullptr;
}
return new AndroidNativeWindow(window);
}
AndroidNativeWindow::~AndroidNativeWindow()
{
if (EnsureInit() && mWindow) {
sLibrary->ANativeWindow_release(mWindow);
mWindow = nullptr;
}
}
IntSize
AndroidNativeWindow::Size()
{
MOZ_ASSERT(mWindow);
if (!EnsureInit()) {
return IntSize(0, 0);
}
return IntSize(sLibrary->ANativeWindow_getWidth(mWindow), sLibrary->ANativeWindow_getHeight(mWindow));
}
AndroidWindowFormat
AndroidNativeWindow::Format()
{
MOZ_ASSERT(mWindow);
if (!EnsureInit()) {
return AndroidWindowFormat::Unknown;
}
return sLibrary->ANativeWindow_getFormat(mWindow);
}
bool
AndroidNativeWindow::SetBuffersGeometry(int32_t aWidth, int32_t aHeight, AndroidWindowFormat aFormat)
{
MOZ_ASSERT(mWindow);
if (!EnsureInit())
return false;
return sLibrary->ANativeWindow_setBuffersGeometry(mWindow, aWidth, aHeight, (int32_t)aFormat);
}
bool
AndroidNativeWindow::Lock(void** out_bits,int32_t* out_width, int32_t* out_height,
int32_t* out_stride, AndroidWindowFormat* out_format)
{
/* Copied from native_window.h in Android NDK (platform-9) */
typedef struct ANativeWindow_Buffer {
// The number of pixels that are show horizontally.
int32_t width;
// The number of pixels that are shown vertically.
int32_t height;
// The number of *pixels* that a line in the buffer takes in
// memory. This may be >= width.
int32_t stride;
// The format of the buffer. One of WINDOW_FORMAT_*
int32_t format;
// The actual bits.
void* bits;
// Do not touch.
uint32_t reserved[6];
} ANativeWindow_Buffer;
ANativeWindow_Buffer buffer;
if (!sLibrary->ANativeWindow_lock(mWindow, &buffer, nullptr)) {
ALOG("Failed to lock");
return false;
}
*out_bits = buffer.bits;
*out_width = buffer.width;
*out_height = buffer.height;
*out_stride = buffer.stride;
*out_format = (AndroidWindowFormat)buffer.format;
return true;
}
bool
AndroidNativeWindow::UnlockAndPost()
{
if (!EnsureInit()) {
ALOG("Not initialized");
return false;
}
return sLibrary->ANativeWindow_unlockAndPost(mWindow);
}
}
#endif // MOZ_WIDGET_ANDROID