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Diffstat (limited to 'media/libstagefright/codecs/vorbis/dec/VorbisDecoder.cpp')
-rw-r--r--media/libstagefright/codecs/vorbis/dec/VorbisDecoder.cpp275
1 files changed, 0 insertions, 275 deletions
diff --git a/media/libstagefright/codecs/vorbis/dec/VorbisDecoder.cpp b/media/libstagefright/codecs/vorbis/dec/VorbisDecoder.cpp
deleted file mode 100644
index e14fb95..0000000
--- a/media/libstagefright/codecs/vorbis/dec/VorbisDecoder.cpp
+++ /dev/null
@@ -1,275 +0,0 @@
-/*
- * Copyright (C) 2010 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 "VorbisDecoder"
-#include <utils/Log.h>
-
-#include "VorbisDecoder.h"
-
-#include <media/stagefright/MediaBufferGroup.h>
-#include <media/stagefright/MediaDebug.h>
-#include <media/stagefright/MediaDefs.h>
-#include <media/stagefright/MediaErrors.h>
-#include <media/stagefright/MetaData.h>
-
-extern "C" {
- #include <Tremolo/codec_internal.h>
-
- int _vorbis_unpack_books(vorbis_info *vi,oggpack_buffer *opb);
- int _vorbis_unpack_info(vorbis_info *vi,oggpack_buffer *opb);
- int _vorbis_unpack_comment(vorbis_comment *vc,oggpack_buffer *opb);
-}
-
-namespace android {
-
-VorbisDecoder::VorbisDecoder(const sp<MediaSource> &source)
- : mSource(source),
- mStarted(false),
- mBufferGroup(NULL),
- mAnchorTimeUs(0),
- mNumFramesOutput(0),
- mState(NULL),
- mVi(NULL) {
- sp<MetaData> srcFormat = mSource->getFormat();
- CHECK(srcFormat->findInt32(kKeyChannelCount, &mNumChannels));
- CHECK(srcFormat->findInt32(kKeySampleRate, &mSampleRate));
-}
-
-VorbisDecoder::~VorbisDecoder() {
- if (mStarted) {
- stop();
- }
-}
-
-static void makeBitReader(
- const void *data, size_t size,
- ogg_buffer *buf, ogg_reference *ref, oggpack_buffer *bits) {
- buf->data = (uint8_t *)data;
- buf->size = size;
- buf->refcount = 1;
- buf->ptr.owner = NULL;
-
- ref->buffer = buf;
- ref->begin = 0;
- ref->length = size;
- ref->next = NULL;
-
- oggpack_readinit(bits, ref);
-}
-
-status_t VorbisDecoder::start(MetaData *params) {
- CHECK(!mStarted);
-
- mBufferGroup = new MediaBufferGroup;
- mBufferGroup->add_buffer(
- new MediaBuffer(kMaxNumSamplesPerBuffer * sizeof(int16_t)));
-
- mSource->start();
-
- sp<MetaData> meta = mSource->getFormat();
-
- mVi = new vorbis_info;
- vorbis_info_init(mVi);
-
- ///////////////////////////////////////////////////////////////////////////
-
- uint32_t type;
- const void *data;
- size_t size;
- CHECK(meta->findData(kKeyVorbisInfo, &type, &data, &size));
-
- ogg_buffer buf;
- ogg_reference ref;
- oggpack_buffer bits;
- makeBitReader((const uint8_t *)data + 7, size - 7, &buf, &ref, &bits);
- CHECK_EQ(0, _vorbis_unpack_info(mVi, &bits));
-
- ///////////////////////////////////////////////////////////////////////////
-
- CHECK(meta->findData(kKeyVorbisBooks, &type, &data, &size));
-
- makeBitReader((const uint8_t *)data + 7, size - 7, &buf, &ref, &bits);
- CHECK_EQ(0, _vorbis_unpack_books(mVi, &bits));
-
- ///////////////////////////////////////////////////////////////////////////
-
- mState = new vorbis_dsp_state;
- CHECK_EQ(0, vorbis_dsp_init(mState, mVi));
-
- mAnchorTimeUs = 0;
- mNumFramesOutput = 0;
-
- // If the source never limits the number of valid frames contained
- // in the input data, we'll assume that all of the decoded frames are
- // valid.
- mNumFramesLeftOnPage = -1;
-
- mStarted = true;
-
- return OK;
-}
-
-status_t VorbisDecoder::stop() {
- CHECK(mStarted);
-
- vorbis_dsp_clear(mState);
- delete mState;
- mState = NULL;
-
- vorbis_info_clear(mVi);
- delete mVi;
- mVi = NULL;
-
- delete mBufferGroup;
- mBufferGroup = NULL;
-
- mSource->stop();
-
- mStarted = false;
-
- return OK;
-}
-
-sp<MetaData> VorbisDecoder::getFormat() {
- sp<MetaData> srcFormat = mSource->getFormat();
-
- sp<MetaData> meta = new MetaData;
- meta->setCString(kKeyMIMEType, MEDIA_MIMETYPE_AUDIO_RAW);
- meta->setInt32(kKeyChannelCount, mNumChannels);
- meta->setInt32(kKeySampleRate, mSampleRate);
-
- int64_t durationUs;
- if (srcFormat->findInt64(kKeyDuration, &durationUs)) {
- meta->setInt64(kKeyDuration, durationUs);
- }
-
- meta->setCString(kKeyDecoderComponent, "VorbisDecoder");
-
- return meta;
-}
-
-int VorbisDecoder::decodePacket(MediaBuffer *packet, MediaBuffer *out) {
- ogg_buffer buf;
- buf.data = (uint8_t *)packet->data() + packet->range_offset();
- buf.size = packet->range_length();
- buf.refcount = 1;
- buf.ptr.owner = NULL;
-
- ogg_reference ref;
- ref.buffer = &buf;
- ref.begin = 0;
- ref.length = packet->range_length();
- ref.next = NULL;
-
- ogg_packet pack;
- pack.packet = &ref;
- pack.bytes = packet->range_length();
- pack.b_o_s = 0;
- pack.e_o_s = 0;
- pack.granulepos = 0;
- pack.packetno = 0;
-
- int numFrames = 0;
-
- int err = vorbis_dsp_synthesis(mState, &pack, 1);
- if (err != 0) {
- LOGW("vorbis_dsp_synthesis returned %d", err);
- } else {
- numFrames = vorbis_dsp_pcmout(
- mState, (int16_t *)out->data(), kMaxNumSamplesPerBuffer);
-
- if (numFrames < 0) {
- LOGE("vorbis_dsp_pcmout returned %d", numFrames);
- numFrames = 0;
- }
- }
-
- if (mNumFramesLeftOnPage >= 0) {
- if (numFrames > mNumFramesLeftOnPage) {
- LOGV("discarding %d frames at end of page",
- numFrames - mNumFramesLeftOnPage);
- numFrames = mNumFramesLeftOnPage;
- }
- mNumFramesLeftOnPage -= numFrames;
- }
-
- out->set_range(0, numFrames * sizeof(int16_t) * mNumChannels);
-
- return numFrames;
-}
-
-status_t VorbisDecoder::read(
- MediaBuffer **out, const ReadOptions *options) {
- status_t err;
-
- *out = NULL;
-
- int64_t seekTimeUs;
- ReadOptions::SeekMode mode;
- if (options && options->getSeekTo(&seekTimeUs, &mode)) {
- CHECK(seekTimeUs >= 0);
-
- mNumFramesOutput = 0;
- vorbis_dsp_restart(mState);
- } else {
- seekTimeUs = -1;
- }
-
- MediaBuffer *inputBuffer;
- err = mSource->read(&inputBuffer, options);
-
- if (err != OK) {
- return ERROR_END_OF_STREAM;
- }
-
- int64_t timeUs;
- if (inputBuffer->meta_data()->findInt64(kKeyTime, &timeUs)) {
- mAnchorTimeUs = timeUs;
- mNumFramesOutput = 0;
- } else {
- // We must have a new timestamp after seeking.
- CHECK(seekTimeUs < 0);
- }
-
- int32_t numPageSamples;
- if (inputBuffer->meta_data()->findInt32(
- kKeyValidSamples, &numPageSamples)) {
- CHECK(numPageSamples >= 0);
- mNumFramesLeftOnPage = numPageSamples;
- }
-
- MediaBuffer *outputBuffer;
- CHECK_EQ(mBufferGroup->acquire_buffer(&outputBuffer), OK);
-
- int numFrames = decodePacket(inputBuffer, outputBuffer);
-
- inputBuffer->release();
- inputBuffer = NULL;
-
- outputBuffer->meta_data()->setInt64(
- kKeyTime,
- mAnchorTimeUs
- + (mNumFramesOutput * 1000000ll) / mSampleRate);
-
- mNumFramesOutput += numFrames;
-
- *out = outputBuffer;
-
- return OK;
-}
-
-} // namespace android
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