@@ -58,7 +58,7 @@ static int aasc_decode_init(AVCodecContext *avctx)

 static int aasc_decode_frame(AVCodecContext *avctx,

                               void *data, int *data_size,

-                              uint8_t *buf, int buf_size)

+                              const uint8_t *buf, int buf_size)

 {

     AascContext *s = avctx->priv_data;

     int stream_ptr = 4;

@@ -107,7 +107,7 @@ static void allocate_buffers(ALACContext *alac)

 static int alac_set_info(ALACContext *alac)

 {

-    unsigned char *ptr = alac->avctx->extradata;

+    const unsigned char *ptr = alac->avctx->extradata;

     ptr += 4; /* size */

     ptr += 4; /* alac */

@@ -439,7 +439,7 @@ static void reconstruct_stereo_16(int32_t *buffer[MAX_CHANNELS],

 static int alac_decode_frame(AVCodecContext *avctx,

                              void *outbuffer, int *outputsize,

-                             uint8_t *inbuffer, int input_buffer_size)

+                             const uint8_t *inbuffer, int input_buffer_size)

 {

     ALACContext *alac = avctx->priv_data;

@@ -32,13 +32,14 @@

 static int sp5x_decode_frame(AVCodecContext *avctx,

                               void *data, int *data_size,

-                              uint8_t *buf, int buf_size)

+                              const uint8_t *buf, int buf_size)

 {

 #if 0

     MJpegDecodeContext *s = avctx->priv_data;

 #endif

     const int qscale = 5;

-    uint8_t *buf_ptr, *buf_end, *recoded;

+    const uint8_t *buf_ptr, *buf_end;

+    uint8_t *recoded;

     int i = 0, j = 0;

     if (!avctx->width || !avctx->height)