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-rw-r--r--media/libmediaplayerservice/VorbisPlayer.cpp527
1 files changed, 527 insertions, 0 deletions
diff --git a/media/libmediaplayerservice/VorbisPlayer.cpp b/media/libmediaplayerservice/VorbisPlayer.cpp
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+++ b/media/libmediaplayerservice/VorbisPlayer.cpp
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+/*
+** Copyright 2007, The Android Open Source Project
+**
+** Licensed under the Apache License, Version 2.0 (the "License");
+** you may not use this file except in compliance with the License.
+** You may obtain a copy of the License at
+**
+** http://www.apache.org/licenses/LICENSE-2.0
+**
+** Unless required by applicable law or agreed to in writing, software
+** distributed under the License is distributed on an "AS IS" BASIS,
+** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+** See the License for the specific language governing permissions and
+** limitations under the License.
+*/
+
+//#define LOG_NDEBUG 0
+#define LOG_TAG "VorbisPlayer"
+#include "utils/Log.h"
+
+#include <stdio.h>
+#include <assert.h>
+#include <limits.h>
+#include <unistd.h>
+#include <fcntl.h>
+#include <sched.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+
+
+#include "VorbisPlayer.h"
+
+#ifdef HAVE_GETTID
+static pid_t myTid() { return gettid(); }
+#else
+static pid_t myTid() { return getpid(); }
+#endif
+
+// ----------------------------------------------------------------------------
+
+namespace android {
+
+// ----------------------------------------------------------------------------
+
+// TODO: Determine appropriate return codes
+static status_t ERROR_NOT_OPEN = -1;
+static status_t ERROR_OPEN_FAILED = -2;
+static status_t ERROR_ALLOCATE_FAILED = -4;
+static status_t ERROR_NOT_SUPPORTED = -8;
+static status_t ERROR_NOT_READY = -16;
+static status_t STATE_INIT = 0;
+static status_t STATE_ERROR = 1;
+static status_t STATE_OPEN = 2;
+
+
+VorbisPlayer::VorbisPlayer() :
+ mAudioBuffer(NULL), mPlayTime(-1), mDuration(-1), mState(STATE_ERROR),
+ mStreamType(AudioTrack::MUSIC), mLoop(false), mAndroidLoop(false),
+ mExit(false), mPaused(false), mRender(false), mRenderTid(-1)
+{
+ LOGV("constructor\n");
+ memset(&mVorbisFile, 0, sizeof mVorbisFile);
+}
+
+void VorbisPlayer::onFirstRef()
+{
+ LOGV("onFirstRef");
+ // create playback thread
+ Mutex::Autolock l(mMutex);
+ createThreadEtc(renderThread, this, "vorbis decoder");
+ mCondition.wait(mMutex);
+ if (mRenderTid > 0) {
+ LOGV("render thread(%d) started", mRenderTid);
+ mState = STATE_INIT;
+ }
+}
+
+status_t VorbisPlayer::initCheck()
+{
+ if (mState != STATE_ERROR) return NO_ERROR;
+ return ERROR_NOT_READY;
+}
+
+VorbisPlayer::~VorbisPlayer() {
+ LOGV("VorbisPlayer destructor\n");
+ release();
+}
+
+status_t VorbisPlayer::setDataSource(const char* path)
+{
+ return setdatasource(path, -1, 0, 0x7ffffffffffffffLL); // intentionally less than LONG_MAX
+}
+
+status_t VorbisPlayer::setDataSource(int fd, int64_t offset, int64_t length)
+{
+ return setdatasource(NULL, fd, offset, length);
+}
+
+size_t VorbisPlayer::vp_fread(void *buf, size_t size, size_t nmemb, void *me) {
+ VorbisPlayer *self = (VorbisPlayer*) me;
+
+ long curpos = vp_ftell(me);
+ while (nmemb != 0 && (curpos + size * nmemb) > self->mLength) {
+ nmemb--;
+ }
+ return fread(buf, size, nmemb, self->mFile);
+}
+
+int VorbisPlayer::vp_fseek(void *me, ogg_int64_t off, int whence) {
+ VorbisPlayer *self = (VorbisPlayer*) me;
+ if (whence == SEEK_SET)
+ return fseek(self->mFile, off + self->mOffset, whence);
+ else if (whence == SEEK_CUR)
+ return fseek(self->mFile, off, whence);
+ else if (whence == SEEK_END)
+ return fseek(self->mFile, self->mOffset + self->mLength + off, SEEK_SET);
+ return -1;
+}
+
+int VorbisPlayer::vp_fclose(void *me) {
+ LOGV("vp_fclose");
+ VorbisPlayer *self = (VorbisPlayer*) me;
+ int ret = fclose (self->mFile);
+ self->mFile = NULL;
+ return ret;
+}
+
+long VorbisPlayer::vp_ftell(void *me) {
+ VorbisPlayer *self = (VorbisPlayer*) me;
+ return ftell(self->mFile) - self->mOffset;
+}
+
+status_t VorbisPlayer::setdatasource(const char *path, int fd, int64_t offset, int64_t length)
+{
+ LOGV("setDataSource url=%s, fd=%d\n", path, fd);
+
+ // file still open?
+ Mutex::Autolock l(mMutex);
+ if (mState == STATE_OPEN) {
+ reset_nosync();
+ }
+
+ // open file and set paused state
+ if (path) {
+ mFile = fopen(path, "r");
+ } else {
+ mFile = fdopen(dup(fd), "r");
+ }
+ if (mFile == NULL) {
+ return ERROR_OPEN_FAILED;
+ }
+
+ struct stat sb;
+ int ret;
+ if (path) {
+ ret = stat(path, &sb);
+ } else {
+ ret = fstat(fd, &sb);
+ }
+ if (ret != 0) {
+ mState = STATE_ERROR;
+ fclose(mFile);
+ return ERROR_OPEN_FAILED;
+ }
+ if (sb.st_size > (length + offset)) {
+ mLength = length;
+ } else {
+ mLength = sb.st_size - offset;
+ }
+
+ ov_callbacks callbacks = {
+ (size_t (*)(void *, size_t, size_t, void *)) vp_fread,
+ (int (*)(void *, ogg_int64_t, int)) vp_fseek,
+ (int (*)(void *)) vp_fclose,
+ (long (*)(void *)) vp_ftell
+ };
+
+ mOffset = offset;
+ fseek(mFile, offset, SEEK_SET);
+
+ int result = ov_open_callbacks(this, &mVorbisFile, NULL, 0, callbacks);
+ if (result < 0) {
+ LOGE("ov_open() failed: [%d]\n", (int)result);
+ mState = STATE_ERROR;
+ fclose(mFile);
+ return ERROR_OPEN_FAILED;
+ }
+
+ // look for the android loop tag (for ringtones)
+ char **ptr = ov_comment(&mVorbisFile,-1)->user_comments;
+ while(*ptr) {
+ // does the comment start with ANDROID_LOOP_TAG
+ if(strncmp(*ptr, ANDROID_LOOP_TAG, strlen(ANDROID_LOOP_TAG)) == 0) {
+ // read the value of the tag
+ char *val = *ptr + strlen(ANDROID_LOOP_TAG) + 1;
+ mAndroidLoop = (strncmp(val, "true", 4) == 0);
+ }
+ // we keep parsing even after finding one occurence of ANDROID_LOOP_TAG,
+ // as we could find another one (the tag might have been appended more than once).
+ ++ptr;
+ }
+ LOGV_IF(mAndroidLoop, "looped sound");
+
+ mState = STATE_OPEN;
+ return NO_ERROR;
+}
+
+status_t VorbisPlayer::prepare()
+{
+ LOGV("prepare\n");
+ if (mState != STATE_OPEN ) {
+ return ERROR_NOT_OPEN;
+ }
+ return NO_ERROR;
+}
+
+status_t VorbisPlayer::prepareAsync() {
+ LOGV("prepareAsync\n");
+ // can't hold the lock here because of the callback
+ // it's safe because we don't change state
+ if (mState != STATE_OPEN ) {
+ sendEvent(MEDIA_ERROR);
+ return NO_ERROR;
+ }
+ sendEvent(MEDIA_PREPARED);
+ return NO_ERROR;
+}
+
+status_t VorbisPlayer::start()
+{
+ LOGV("start\n");
+ Mutex::Autolock l(mMutex);
+ if (mState != STATE_OPEN) {
+ return ERROR_NOT_OPEN;
+ }
+
+ mPaused = false;
+ mRender = true;
+
+ // wake up render thread
+ LOGV(" wakeup render thread\n");
+ mCondition.signal();
+ return NO_ERROR;
+}
+
+status_t VorbisPlayer::stop()
+{
+ LOGV("stop\n");
+ Mutex::Autolock l(mMutex);
+ if (mState != STATE_OPEN) {
+ return ERROR_NOT_OPEN;
+ }
+ mPaused = true;
+ mRender = false;
+ return NO_ERROR;
+}
+
+status_t VorbisPlayer::seekTo(int position)
+{
+ LOGV("seekTo %d\n", position);
+ Mutex::Autolock l(mMutex);
+ if (mState != STATE_OPEN) {
+ return ERROR_NOT_OPEN;
+ }
+
+ int result = ov_time_seek(&mVorbisFile, position);
+ if (result != 0) {
+ LOGE("ov_time_seek() returned %d\n", result);
+ return result;
+ }
+ sendEvent(MEDIA_SEEK_COMPLETE);
+ return NO_ERROR;
+}
+
+status_t VorbisPlayer::pause()
+{
+ LOGV("pause\n");
+ Mutex::Autolock l(mMutex);
+ if (mState != STATE_OPEN) {
+ return ERROR_NOT_OPEN;
+ }
+ mPaused = true;
+ return NO_ERROR;
+}
+
+bool VorbisPlayer::isPlaying()
+{
+ LOGV("isPlaying\n");
+ if (mState == STATE_OPEN) {
+ return mRender;
+ }
+ return false;
+}
+
+status_t VorbisPlayer::getCurrentPosition(int* position)
+{
+ LOGV("getCurrentPosition\n");
+ Mutex::Autolock l(mMutex);
+ if (mState != STATE_OPEN) {
+ LOGE("getCurrentPosition(): file not open");
+ return ERROR_NOT_OPEN;
+ }
+ *position = ov_time_tell(&mVorbisFile);
+ if (*position < 0) {
+ LOGE("getCurrentPosition(): ov_time_tell returned %d", *position);
+ return *position;
+ }
+ return NO_ERROR;
+}
+
+status_t VorbisPlayer::getDuration(int* duration)
+{
+ LOGV("getDuration\n");
+ Mutex::Autolock l(mMutex);
+ if (mState != STATE_OPEN) {
+ return ERROR_NOT_OPEN;
+ }
+
+ int ret = ov_time_total(&mVorbisFile, -1);
+ if (ret == OV_EINVAL) {
+ return -1;
+ }
+
+ *duration = ret;
+ return NO_ERROR;
+}
+
+status_t VorbisPlayer::release()
+{
+ LOGV("release\n");
+ Mutex::Autolock l(mMutex);
+ reset_nosync();
+
+ // TODO: timeout when thread won't exit
+ // wait for render thread to exit
+ if (mRenderTid > 0) {
+ mExit = true;
+ mCondition.signal();
+ mCondition.wait(mMutex);
+ }
+ return NO_ERROR;
+}
+
+status_t VorbisPlayer::reset()
+{
+ LOGV("reset\n");
+ Mutex::Autolock l(mMutex);
+ if (mState != STATE_OPEN) {
+ return NO_ERROR;
+ }
+ return reset_nosync();
+}
+
+// always call with lock held
+status_t VorbisPlayer::reset_nosync()
+{
+ // close file
+ ov_clear(&mVorbisFile); // this also closes the FILE
+ if (mFile != NULL) {
+ LOGV("OOPS! Vorbis didn't close the file");
+ fclose(mFile);
+ }
+ mState = STATE_ERROR;
+
+ mPlayTime = -1;
+ mDuration = -1;
+ mLoop = false;
+ mAndroidLoop = false;
+ mPaused = false;
+ mRender = false;
+ return NO_ERROR;
+}
+
+status_t VorbisPlayer::setLooping(int loop)
+{
+ LOGV("setLooping\n");
+ Mutex::Autolock l(mMutex);
+ mLoop = (loop != 0);
+ return NO_ERROR;
+}
+
+status_t VorbisPlayer::createOutputTrack() {
+ // open audio track
+ vorbis_info *vi = ov_info(&mVorbisFile, -1);
+
+ LOGV("Create AudioTrack object: rate=%ld, channels=%d\n",
+ vi->rate, vi->channels);
+ if (mAudioSink->open(vi->rate, vi->channels, DEFAULT_AUDIOSINK_BUFFERCOUNT) != NO_ERROR) {
+ LOGE("mAudioSink open failed");
+ return ERROR_OPEN_FAILED;
+ }
+ return NO_ERROR;
+}
+
+int VorbisPlayer::renderThread(void* p) {
+ return ((VorbisPlayer*)p)->render();
+}
+
+#define AUDIOBUFFER_SIZE 4096
+
+int VorbisPlayer::render() {
+ int result = -1;
+ int temp;
+ int current_section = 0;
+ bool audioStarted = false;
+
+ LOGV("render\n");
+
+ // allocate render buffer
+ mAudioBuffer = new char[AUDIOBUFFER_SIZE];
+ if (!mAudioBuffer) {
+ LOGE("mAudioBuffer allocate failed\n");
+ goto threadExit;
+ }
+
+ // let main thread know we're ready
+ {
+ Mutex::Autolock l(mMutex);
+ mRenderTid = myTid();
+ mCondition.signal();
+ }
+
+ while (1) {
+ long numread = 0;
+ {
+ Mutex::Autolock l(mMutex);
+
+ // pausing?
+ if (mPaused) {
+ if (mAudioSink->ready()) mAudioSink->pause();
+ mRender = false;
+ audioStarted = false;
+ }
+
+ // nothing to render, wait for client thread to wake us up
+ if (!mExit && !mRender) {
+ LOGV("render - signal wait\n");
+ mCondition.wait(mMutex);
+ LOGV("render - signal rx'd\n");
+ }
+ if (mExit) break;
+
+ // We could end up here if start() is called, and before we get a
+ // chance to run, the app calls stop() or reset(). Re-check render
+ // flag so we don't try to render in stop or reset state.
+ if (!mRender) continue;
+
+ // render vorbis data into the input buffer
+ numread = ov_read(&mVorbisFile, mAudioBuffer, AUDIOBUFFER_SIZE, &current_section);
+ if (numread == 0) {
+ // end of file, do we need to loop?
+ // ...
+ if (mLoop || mAndroidLoop) {
+ ov_time_seek(&mVorbisFile, 0);
+ current_section = 0;
+ numread = ov_read(&mVorbisFile, mAudioBuffer, AUDIOBUFFER_SIZE, &current_section);
+ } else {
+ sendEvent(MEDIA_PLAYBACK_COMPLETE);
+ mAudioSink->stop();
+ audioStarted = false;
+ mRender = false;
+ mPaused = true;
+ int endpos = ov_time_tell(&mVorbisFile);
+
+ // wait until we're started again
+ LOGV("playback complete - wait for signal");
+ mCondition.wait(mMutex);
+ LOGV("playback complete - signal rx'd");
+ if (mExit) break;
+
+ // if we're still at the end, restart from the beginning
+ if (mState == STATE_OPEN) {
+ int curpos = ov_time_tell(&mVorbisFile);
+ if (curpos == endpos) {
+ ov_time_seek(&mVorbisFile, 0);
+ }
+ current_section = 0;
+ numread = ov_read(&mVorbisFile, mAudioBuffer, AUDIOBUFFER_SIZE, &current_section);
+ }
+ }
+ }
+ }
+
+ // codec returns negative number on error
+ if (numread < 0) {
+ LOGE("Error in Vorbis decoder");
+ sendEvent(MEDIA_ERROR);
+ break;
+ }
+
+ // create audio output track if necessary
+ if (!mAudioSink->ready()) {
+ LOGV("render - create output track\n");
+ if (createOutputTrack() != NO_ERROR)
+ break;
+ }
+
+ // Write data to the audio hardware
+ if ((temp = mAudioSink->write(mAudioBuffer, numread)) < 0) {
+ LOGE("Error in writing:%d",temp);
+ result = temp;
+ break;
+ }
+
+ // start audio output if necessary
+ if (!audioStarted && !mPaused && !mExit) {
+ LOGV("render - starting audio\n");
+ mAudioSink->start();
+ audioStarted = true;
+ }
+ }
+
+threadExit:
+ mAudioSink.clear();
+ if (mAudioBuffer) {
+ delete [] mAudioBuffer;
+ mAudioBuffer = NULL;
+ }
+
+ // tell main thread goodbye
+ Mutex::Autolock l(mMutex);
+ mRenderTid = -1;
+ mCondition.signal();
+ return result;
+}
+
+} // end namespace android
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