Adding a basic sample plugin to test audio playback
diff --git a/samples/BrowserPlugin/jni/audio/AudioPlugin.cpp b/samples/BrowserPlugin/jni/audio/AudioPlugin.cpp
new file mode 100644
index 0000000..872f979
--- /dev/null
+++ b/samples/BrowserPlugin/jni/audio/AudioPlugin.cpp
@@ -0,0 +1,338 @@
+/*
+ * Copyright 2008, The Android Open Source Project
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * * Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * * Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS ``AS IS'' AND ANY
+ * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE COMPUTER, INC. OR
+ * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+ * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+ * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
+ * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include "AudioPlugin.h"
+
+#include <stdio.h>
+#include <sys/time.h>
+#include <time.h>
+#include <math.h>
+#include <string.h>
+
+extern NPNetscapeFuncs* browser;
+extern ANPLogInterfaceV0 gLogI;
+extern ANPCanvasInterfaceV0 gCanvasI;
+extern ANPPaintInterfaceV0 gPaintI;
+extern ANPAudioTrackInterfaceV0 gSoundI;
+extern ANPTypefaceInterfaceV0 gTypefaceI;
+
+
+static void inval(NPP instance) {
+ browser->invalidaterect(instance, NULL);
+}
+
+static uint16 rnd16(float x, int inset) {
+ int ix = (int)roundf(x) + inset;
+ if (ix < 0) {
+ ix = 0;
+ }
+ return static_cast<uint16>(ix);
+}
+
+static void inval(NPP instance, const ANPRectF& r, bool doAA) {
+ const int inset = doAA ? -1 : 0;
+
+ PluginObject *obj = reinterpret_cast<PluginObject*>(instance->pdata);
+ NPRect inval;
+ inval.left = rnd16(r.left, inset);
+ inval.top = rnd16(r.top, inset);
+ inval.right = rnd16(r.right, -inset);
+ inval.bottom = rnd16(r.bottom, -inset);
+ browser->invalidaterect(instance, &inval);
+}
+
+static void drawPlugin(SubPlugin* plugin, const ANPBitmap& bitmap, const ANPRectI& clip) {
+ ANPCanvas* canvas = gCanvasI.newCanvas(&bitmap);
+
+ ANPRectF clipR;
+ clipR.left = clip.left;
+ clipR.top = clip.top;
+ clipR.right = clip.right;
+ clipR.bottom = clip.bottom;
+ gCanvasI.clipRect(canvas, &clipR);
+
+ plugin->draw(canvas);
+ gCanvasI.deleteCanvas(canvas);
+}
+
+struct SoundPlay {
+ NPP instance;
+ ANPAudioTrack* track;
+ FILE* file;
+};
+
+static void audioCallback(ANPAudioEvent evt, void* user, ANPAudioBuffer* buffer) {
+ switch (evt) {
+ case kMoreData_ANPAudioEvent: {
+ SoundPlay* play = reinterpret_cast<SoundPlay*>(user);
+ size_t amount = fread(buffer->bufferData, 1, buffer->size, play->file);
+ buffer->size = amount;
+ if (amount == 0) {
+ gSoundI.stop(play->track);
+ fclose(play->file);
+ play->file = NULL;
+ // TODO need to notify our main thread to delete the track now
+ }
+ break;
+ }
+ default:
+ break;
+ }
+}
+
+static ANPAudioTrack* createTrack(NPP instance, const char path[]) {
+ FILE* f = fopen(path, "r");
+ gLogI.log(instance, kWarning_ANPLogType, "--- path %s FILE %p", path, f);
+ if (NULL == f) {
+ return NULL;
+ }
+ SoundPlay* play = new SoundPlay;
+ play->file = f;
+ play->track = gSoundI.newTrack(44100, kPCM16Bit_ANPSampleFormat, 2, audioCallback, play);
+ if (NULL == play->track) {
+ fclose(f);
+ delete play;
+ return NULL;
+ }
+ return play->track;
+}
+
+///////////////////////////////////////////////////////////////////////////////
+
+AudioPlugin::AudioPlugin(NPP inst) : SubPlugin(inst) {
+
+ m_track = NULL;
+ m_activeTouch = false;
+
+ memset(&m_trackRect, 0, sizeof(m_trackRect));
+ memset(&m_playRect, 0, sizeof(m_playRect));
+ memset(&m_pauseRect, 0, sizeof(m_pauseRect));
+ memset(&m_stopRect, 0, sizeof(m_stopRect));
+
+ m_paintTrack = gPaintI.newPaint();
+ gPaintI.setFlags(m_paintTrack, gPaintI.getFlags(m_paintTrack) | kAntiAlias_ANPPaintFlag);
+ gPaintI.setColor(m_paintTrack, 0xFFC0C0C0);
+
+ m_paintRect = gPaintI.newPaint();
+ gPaintI.setFlags(m_paintRect, gPaintI.getFlags(m_paintRect) | kAntiAlias_ANPPaintFlag);
+ gPaintI.setColor(m_paintRect, 0xFFA8A8A8);
+
+ m_paintText = gPaintI.newPaint();
+ gPaintI.setFlags(m_paintText, gPaintI.getFlags(m_paintText) | kAntiAlias_ANPPaintFlag);
+ gPaintI.setColor(m_paintText, 0xFF2F4F4F);
+ gPaintI.setTextSize(m_paintText, 18);
+
+ ANPTypeface* tf = gTypefaceI.createFromName("serif", kItalic_ANPTypefaceStyle);
+ gPaintI.setTypeface(m_paintText, tf);
+ gTypefaceI.unref(tf);
+
+ //register for touch events
+ ANPEventFlags flags = kTouch_ANPEventFlag;
+ NPError err = browser->setvalue(inst, kAcceptEvents_ANPSetValue, &flags);
+ if (err != NPERR_NO_ERROR) {
+ gLogI.log(inst, kError_ANPLogType, "Error selecting input events.");
+ }
+}
+
+AudioPlugin::~AudioPlugin() {
+ gPaintI.deletePaint(m_paintTrack);
+ gPaintI.deletePaint(m_paintRect);
+ gPaintI.deletePaint(m_paintText);
+ if(m_track)
+ gSoundI.deleteTrack(m_track);
+}
+
+void AudioPlugin::draw(ANPCanvas* canvas) {
+ NPP instance = this->inst();
+ PluginObject *obj = (PluginObject*) instance->pdata;
+
+ const float trackHeight = 30;
+ const float buttonWidth = 60;
+ const float buttonHeight = 30;
+ const int W = obj->window->width;
+ const int H = obj->window->height;
+
+ // color the plugin canvas
+ gCanvasI.drawColor(canvas, 0xFFCDCDCD);
+
+ // get font metrics
+ ANPFontMetrics fontMetrics;
+ gPaintI.getFontMetrics(m_paintText, &fontMetrics);
+
+ // draw the track box (1 px from the edge)
+ inval(instance, m_trackRect, true);
+ m_trackRect.left = 1;
+ m_trackRect.top = 1;
+ m_trackRect.right = W - 2;
+ m_trackRect.bottom = 1 + trackHeight;
+ gCanvasI.drawRect(canvas, &m_trackRect, m_paintTrack);
+ inval(instance, m_trackRect, true);
+
+ // draw the play box (under track box)
+ inval(instance, m_playRect, true);
+ m_playRect.left = m_trackRect.left + 5;
+ m_playRect.top = m_trackRect.bottom + 10;
+ m_playRect.right = m_playRect.left + buttonWidth;
+ m_playRect.bottom = m_playRect.top + buttonHeight;
+ gCanvasI.drawRect(canvas, &m_playRect, m_paintRect);
+ // draw the play box (under track box)
+ const char playText[] = "Play";
+ gCanvasI.drawText(canvas, playText, sizeof(playText)-1, m_playRect.left + 5,
+ m_playRect.top - fontMetrics.fTop, m_paintText);
+ inval(instance, m_playRect, true);
+
+ // draw the pause box (under track box)
+ inval(instance, m_pauseRect, true);
+ m_pauseRect.left = m_playRect.right + 20;
+ m_pauseRect.top = m_trackRect.bottom + 10;
+ m_pauseRect.right = m_pauseRect.left + buttonWidth;
+ m_pauseRect.bottom = m_pauseRect.top + buttonHeight;
+ gCanvasI.drawRect(canvas, &m_pauseRect, m_paintRect);
+ // draw the text in the pause box
+ const char pauseText[] = "Pause";
+ gCanvasI.drawText(canvas, pauseText, sizeof(pauseText)-1, m_pauseRect.left + 5,
+ m_pauseRect.top - fontMetrics.fTop, m_paintText);
+ inval(instance, m_pauseRect, true);
+
+ // draw the stop box (under track box)
+ inval(instance, m_stopRect, true);
+ m_stopRect.left = m_pauseRect.right + 20;
+ m_stopRect.top = m_trackRect.bottom + 10;
+ m_stopRect.right = m_stopRect.left + buttonWidth;
+ m_stopRect.bottom = m_stopRect.top + buttonHeight;
+ gCanvasI.drawRect(canvas, &m_stopRect, m_paintRect);
+ // draw the text in the pause box
+ const char stopText[] = "Stop";
+ gCanvasI.drawText(canvas, stopText, sizeof(stopText)-1, m_stopRect.left + 5,
+ m_stopRect.top - fontMetrics.fTop, m_paintText);
+ inval(instance, m_stopRect, true);
+
+}
+
+int16 AudioPlugin::handleEvent(const ANPEvent* evt) {
+ NPP instance = this->inst();
+
+ switch (evt->eventType) {
+ case kDraw_ANPEventType:
+ switch (evt->data.draw.model) {
+ case kBitmap_ANPDrawingModel:
+ drawPlugin(this, evt->data.draw.data.bitmap, evt->data.draw.clip);
+ return 1;
+ default:
+ break; // unknown drawing model
+ }
+
+ case kTouch_ANPEventType: {
+ int x = evt->data.touch.x;
+ int y = evt->data.touch.y;
+ if (kDown_ANPTouchAction == evt->data.touch.action) {
+
+ if (m_activeTouch)
+ invalActiveRect();
+
+ m_activeRect = validTouch(x,y);
+ if(m_activeRect) {
+ m_activeTouch = true;
+ // TODO color the rect
+ return 1;
+ }
+
+ } else if (kUp_ANPTouchAction == evt->data.touch.action && m_activeTouch) {
+ handleTouch(x, y);
+ invalActiveRect();
+ m_activeTouch = false;
+ return 1;
+ } else if (kCancel_ANPTouchAction == evt->data.touch.action) {
+ m_activeTouch = false;
+ }
+ break;
+ }
+ default:
+ break;
+ }
+ return 0; // unknown or unhandled event
+}
+
+void AudioPlugin::invalActiveRect() { }
+
+ANPRectF* AudioPlugin::validTouch(int x, int y) {
+
+ if (m_playRect.left && x < m_playRect.right && y > m_playRect.top && y < m_playRect.bottom)
+ return &m_playRect;
+ else if (m_pauseRect.left && x < m_pauseRect.right && y > m_pauseRect.top && y < m_pauseRect.bottom)
+ return &m_pauseRect;
+ else if (x > m_stopRect.left && x < m_stopRect.right && y > m_stopRect.top && y < m_stopRect.bottom)
+ return &m_stopRect;
+ else
+ return NULL;
+}
+
+void AudioPlugin::handleTouch(int x, int y) {
+ NPP instance = this->inst();
+
+ if (NULL == m_track) {
+ m_track = createTrack(instance, "/sdcard/sample.raw");
+ }
+
+ // if the track is still null then return
+ if(NULL == m_track) {
+ gLogI.log(instance, kError_ANPLogType, "---- %p unable to create track",
+ instance);
+ return;
+ }
+
+ // check to make sure the currentRect matches the activeRect
+ ANPRectF* currentRect = validTouch(x,y);
+ if(m_activeRect != currentRect)
+ return;
+
+ if (m_activeRect == &m_playRect) {
+
+ gLogI.log(instance, kDebug_ANPLogType, "---- %p starting track (%d)",
+ m_track, gSoundI.isStopped(m_track));
+
+ if (gSoundI.isStopped(m_track)) {
+ gSoundI.start(m_track);
+ }
+ }
+ else if (m_activeRect == &m_pauseRect) {
+
+ gLogI.log(instance, kDebug_ANPLogType, "---- %p pausing track (%d)",
+ m_track, gSoundI.isStopped(m_track));
+
+ if (!gSoundI.isStopped(m_track)) {
+ gSoundI.pause(m_track);
+ }
+ }
+ else if (m_activeRect == &m_stopRect) {
+
+ gLogI.log(instance, kDebug_ANPLogType, "---- %p stopping track (%d)",
+ m_track, gSoundI.isStopped(m_track));
+
+ if (!gSoundI.isStopped(m_track)) {
+ gSoundI.stop(m_track);
+ }
+ }
+}