From 14f7672b5d450ed26a06fd3bb3ce045ea78b11b2 Mon Sep 17 00:00:00 2001
From: Andreas Huber <andih@google.com>
Date: Tue, 15 Jan 2013 09:04:18 -0800
Subject: New HLS implementation supporting independent stream sources,
 audio-only streams

and more.

Change-Id: Icfc45a0100243b2f7a14a9e65696be45b67d6495
---
 media/libstagefright/id3/ID3.cpp | 48 ++++++++++++++++++++++++++++++++++++++--
 1 file changed, 46 insertions(+), 2 deletions(-)

(limited to 'media/libstagefright/id3')

diff --git a/media/libstagefright/id3/ID3.cpp b/media/libstagefright/id3/ID3.cpp
index 22c2f5a..8d3013b 100644
--- a/media/libstagefright/id3/ID3.cpp
+++ b/media/libstagefright/id3/ID3.cpp
@@ -30,12 +30,55 @@ namespace android {
 
 static const size_t kMaxMetadataSize = 3 * 1024 * 1024;
 
+struct MemorySource : public DataSource {
+    MemorySource(const uint8_t *data, size_t size)
+        : mData(data),
+          mSize(size) {
+    }
+
+    virtual status_t initCheck() const {
+        return OK;
+    }
+
+    virtual ssize_t readAt(off64_t offset, void *data, size_t size) {
+        off64_t available = (offset >= mSize) ? 0ll : mSize - offset;
+
+        size_t copy = (available > size) ? size : available;
+        memcpy(data, mData + offset, copy);
+
+        return copy;
+    }
+
+private:
+    const uint8_t *mData;
+    size_t mSize;
+
+    DISALLOW_EVIL_CONSTRUCTORS(MemorySource);
+};
+
 ID3::ID3(const sp<DataSource> &source, bool ignoreV1)
     : mIsValid(false),
       mData(NULL),
       mSize(0),
       mFirstFrameOffset(0),
-      mVersion(ID3_UNKNOWN) {
+      mVersion(ID3_UNKNOWN),
+      mRawSize(0) {
+    mIsValid = parseV2(source);
+
+    if (!mIsValid && !ignoreV1) {
+        mIsValid = parseV1(source);
+    }
+}
+
+ID3::ID3(const uint8_t *data, size_t size, bool ignoreV1)
+    : mIsValid(false),
+      mData(NULL),
+      mSize(0),
+      mFirstFrameOffset(0),
+      mVersion(ID3_UNKNOWN),
+      mRawSize(0) {
+    sp<MemorySource> source = new MemorySource(data, size);
+
     mIsValid = parseV2(source);
 
     if (!mIsValid && !ignoreV1) {
@@ -140,6 +183,7 @@ struct id3_header {
     }
 
     mSize = size;
+    mRawSize = mSize + sizeof(header);
 
     if (source->readAt(sizeof(header), mData, mSize) != (ssize_t)mSize) {
         free(mData);
@@ -505,7 +549,7 @@ void ID3::Iterator::getstring(String8 *id, bool otherdata) const {
         int32_t i = n - 4;
         while(--i >= 0 && *++frameData != 0) ;
         int skipped = (frameData - mFrameData);
-        if (skipped >= n) {
+        if (skipped >= (int)n) {
             return;
         }
         n -= skipped;
-- 
cgit v1.1