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-rw-r--r--media/libstagefright/VBRISeeker.cpp165
1 files changed, 0 insertions, 165 deletions
diff --git a/media/libstagefright/VBRISeeker.cpp b/media/libstagefright/VBRISeeker.cpp
deleted file mode 100644
index bcba874..0000000
--- a/media/libstagefright/VBRISeeker.cpp
+++ /dev/null
@@ -1,165 +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 "VBRISeeker"
-#include <utils/Log.h>
-
-#include "include/VBRISeeker.h"
-
-#include "include/avc_utils.h"
-#include "include/MP3Extractor.h"
-
-#include <media/stagefright/foundation/ADebug.h>
-#include <media/stagefright/DataSource.h>
-#include <media/stagefright/Utils.h>
-
-namespace android {
-
-static uint32_t U24_AT(const uint8_t *ptr) {
- return ptr[0] << 16 | ptr[1] << 8 | ptr[2];
-}
-
-// static
-sp<VBRISeeker> VBRISeeker::CreateFromSource(
- const sp<DataSource> &source, off64_t post_id3_pos) {
- off64_t pos = post_id3_pos;
-
- uint8_t header[4];
- ssize_t n = source->readAt(pos, header, sizeof(header));
- if (n < (ssize_t)sizeof(header)) {
- return NULL;
- }
-
- uint32_t tmp = U32_AT(&header[0]);
- size_t frameSize;
- int sampleRate;
- if (!GetMPEGAudioFrameSize(tmp, &frameSize, &sampleRate)) {
- return NULL;
- }
-
- // VBRI header follows 32 bytes after the header _ends_.
- pos += sizeof(header) + 32;
-
- uint8_t vbriHeader[26];
- n = source->readAt(pos, vbriHeader, sizeof(vbriHeader));
- if (n < (ssize_t)sizeof(vbriHeader)) {
- return NULL;
- }
-
- if (memcmp(vbriHeader, "VBRI", 4)) {
- return NULL;
- }
-
- size_t numFrames = U32_AT(&vbriHeader[14]);
-
- int64_t durationUs =
- numFrames * 1000000ll * (sampleRate >= 32000 ? 1152 : 576) / sampleRate;
-
- ALOGV("duration = %.2f secs", durationUs / 1E6);
-
- size_t numEntries = U16_AT(&vbriHeader[18]);
- size_t entrySize = U16_AT(&vbriHeader[22]);
- size_t scale = U16_AT(&vbriHeader[20]);
-
- ALOGV("%d entries, scale=%d, size_per_entry=%d",
- numEntries,
- scale,
- entrySize);
-
- size_t totalEntrySize = numEntries * entrySize;
- uint8_t *buffer = new uint8_t[totalEntrySize];
-
- n = source->readAt(pos + sizeof(vbriHeader), buffer, totalEntrySize);
- if (n < (ssize_t)totalEntrySize) {
- delete[] buffer;
- buffer = NULL;
-
- return NULL;
- }
-
- sp<VBRISeeker> seeker = new VBRISeeker;
- seeker->mBasePos = post_id3_pos + frameSize;
- seeker->mDurationUs = durationUs;
-
- off64_t offset = post_id3_pos;
- for (size_t i = 0; i < numEntries; ++i) {
- uint32_t numBytes;
- switch (entrySize) {
- case 1: numBytes = buffer[i]; break;
- case 2: numBytes = U16_AT(buffer + 2 * i); break;
- case 3: numBytes = U24_AT(buffer + 3 * i); break;
- default:
- {
- CHECK_EQ(entrySize, 4u);
- numBytes = U32_AT(buffer + 4 * i); break;
- }
- }
-
- numBytes *= scale;
-
- seeker->mSegments.push(numBytes);
-
- ALOGV("entry #%d: %d offset 0x%08lx", i, numBytes, offset);
- offset += numBytes;
- }
-
- delete[] buffer;
- buffer = NULL;
-
- ALOGI("Found VBRI header.");
-
- return seeker;
-}
-
-VBRISeeker::VBRISeeker()
- : mDurationUs(-1) {
-}
-
-bool VBRISeeker::getDuration(int64_t *durationUs) {
- if (mDurationUs < 0) {
- return false;
- }
-
- *durationUs = mDurationUs;
-
- return true;
-}
-
-bool VBRISeeker::getOffsetForTime(int64_t *timeUs, off64_t *pos) {
- if (mDurationUs < 0) {
- return false;
- }
-
- int64_t segmentDurationUs = mDurationUs / mSegments.size();
-
- int64_t nowUs = 0;
- *pos = mBasePos;
- size_t segmentIndex = 0;
- while (segmentIndex < mSegments.size() && nowUs < *timeUs) {
- nowUs += segmentDurationUs;
- *pos += mSegments.itemAt(segmentIndex++);
- }
-
- ALOGV("getOffsetForTime %lld us => 0x%08lx", *timeUs, *pos);
-
- *timeUs = nowUs;
-
- return true;
-}
-
-} // namespace android
-