Attachment #277643 for bug #372413

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#define SUPPORT_AUDIO_CAPTURE  (1)
#endif

#include <inttypes.h>

#ifndef int32
    typedef int32_t int32;
#endif
#ifndef uint32
    typedef uint32_t uint32;
#endif
#ifndef int16
    typedef int16_t int16;
#endif
#ifndef uint16
    typedef uint16_t uint16;
#endif

/* Used to convert between various sample formats. */




#define PA_DITHER_SCALE  (1.0f / ((1<<PA_DITHER_BITS)-1))
long PaConvert_TriangularDither( void )
{
    static uint32 previous = 0;
    static uint32 randSeed1 = 22222;
    static uint32 randSeed2 = 5555555;
    int32 current, highPass;
    /* Generate two random numbers. */
    randSeed1 = (randSeed1 * 196314165) + 907633515;
    randSeed2 = (randSeed2 * 196314165) + 907633515;

     * Also shift an extra bit for the high pass filter. 
     */
#define DITHER_SHIFT  ((32 - PA_DITHER_BITS) + 1)
    current = (((int32)randSeed1)>>DITHER_SHIFT) + (((int32)randSeed2)>>DITHER_SHIFT);
    /* High pass filter to reduce audibility. */
    highPass = current - previous;
    previous = current;

Return to bug 372413

Lines 498-507 internalPortAudioStream* PaHost_GetStreamRepresentation( PortAudioStream *stream Link Here

(-)a/pa_common/pa_lib.c (-5 / +5 lines)
498	#define PA_DITHER_SCALE (1.0f / ((1<<PA_DITHER_BITS)-1))	498	#define PA_DITHER_SCALE (1.0f / ((1<<PA_DITHER_BITS)-1))
499	long PaConvert_TriangularDither( void )	499	long PaConvert_TriangularDither( void )
500	{	500	{
501	static unsigned long previous = 0;	501	static uint32 previous = 0;
502	static unsigned long randSeed1 = 22222;	502	static uint32 randSeed1 = 22222;
503	static unsigned long randSeed2 = 5555555;	503	static uint32 randSeed2 = 5555555;
504	long current, highPass;	504	int32 current, highPass;
505	/* Generate two random numbers. */	505	/* Generate two random numbers. */
506	randSeed1 = (randSeed1 * 196314165) + 907633515;	506	randSeed1 = (randSeed1 * 196314165) + 907633515;
507	randSeed2 = (randSeed2 * 196314165) + 907633515;	507	randSeed2 = (randSeed2 * 196314165) + 907633515;
Lines 510-516 long PaConvert_TriangularDither( void ) Link Here
510	* Also shift an extra bit for the high pass filter.	510	* Also shift an extra bit for the high pass filter.
511	*/	511	*/
512	#define DITHER_SHIFT ((32 - PA_DITHER_BITS) + 1)	512	#define DITHER_SHIFT ((32 - PA_DITHER_BITS) + 1)
513	current = (((long)randSeed1)>>DITHER_SHIFT) + (((long)randSeed2)>>DITHER_SHIFT);	513	current = (((int32)randSeed1)>>DITHER_SHIFT) + (((int32)randSeed2)>>DITHER_SHIFT);
514	/* High pass filter to reduce audibility. */	514	/* High pass filter to reduce audibility. */
515	highPass = current - previous;	515	highPass = current - previous;
516	previous = current;	516	previous = current;

Lines 48-64 extern "C" Link Here

(-)a/pa_common/pa_host.h (-4 / +6 lines)
48	#define SUPPORT_AUDIO_CAPTURE (1)	48	#define SUPPORT_AUDIO_CAPTURE (1)
49	#endif	49	#endif
50		50
		51	#include <inttypes.h>
		52
51	#ifndef int32	53	#ifndef int32
52	typedef long int32;	54	typedef int32_t int32;
53	#endif	55	#endif
54	#ifndef uint32	56	#ifndef uint32
55	typedef unsigned long uint32;	57	typedef uint32_t uint32;
56	#endif	58	#endif
57	#ifndef int16	59	#ifndef int16
58	typedef short int16;	60	typedef int16_t int16;
59	#endif	61	#endif
60	#ifndef uint16	62	#ifndef uint16
61	typedef unsigned short uint16;	63	typedef uint16_t uint16;
62	#endif	64	#endif
63		65
64	/* Used to convert between various sample formats. */	66	/* Used to convert between various sample formats. */