shithub: aacenc

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frame buffer overrun check

--- a/ChangeLog

+++ b/ChangeLog

@@ -1,6 +1,6 @@

-1.29.7.3

+	* allowed even higher bitrates, including ADTS

+	* removed broken object types: Main and LTP

 	* some mp4 atoms fixed for better compalibility

-1.29.7.2

 	* stdin seek bug fixed

 1.29.7

 	* quantizer tweaked to better support high bitrates

--- a/libfaac/bitstream.c

+++ b/libfaac/bitstream.c

@@ -152,7 +152,8 @@

     int bits = 0;

     int bitsLeftAfterFill, numFillBits;

-    CountBitstream(hEncoder, coderInfo, channelInfo, bitStream, numChannel);

+    if (CountBitstream(hEncoder, coderInfo, channelInfo, bitStream, numChannel) < 0)

+        return -1;

     if(hEncoder->config.outputFormat == 1){

         bits += WriteADTSHeader(hEncoder, bitStream, 1);

@@ -315,6 +316,11 @@

     bits += ByteAlign(bitStream, 0, bits);

     hEncoder->usedBytes = bit2byte(bits);

+    if (hEncoder->usedBytes >= ADTS_FRAMESIZE)

+    {

+        fprintf(stderr, "frame buffer overrun\n");

+        return -1;

+    }

     return bits;

 }

--- a/libfaac/bitstream.h

+++ b/libfaac/bitstream.h

@@ -137,6 +137,7 @@

 #define LONG_NUMBIT 32      /* bits in unsigned long */

 #define bit2byte(a) (((a)+BYTE_NUMBIT-1)/BYTE_NUMBIT)

+enum {ADTS_FRAMESIZE = 1 << 13};

 typedef struct

 {

--- a/libfaac/frame.c

+++ b/libfaac/frame.c

@@ -284,7 +284,7 @@

 	return NULL;

     *inputSamples = FRAME_LEN*numChannels;

-    *maxOutputBytes = 0x2000;

+    *maxOutputBytes = ADTS_FRAMESIZE;

 #ifdef DRM

     *maxOutputBytes += 1; /* for CRC */

@@ -718,7 +718,8 @@

     /* Write the AAC bitstream */

     bitStream = OpenBitStream(bufferSize, outputBuffer);

-    WriteBitstream(hEncoder, coderInfo, channelInfo, bitStream, numChannels);

+    if (WriteBitstream(hEncoder, coderInfo, channelInfo, bitStream, numChannels) < 0)

+        return -1;

     /* Close the bitstream and return the number of bytes written */

     frameBytes = CloseBitStream(bitStream);