compress: upgraded to AudioCompress 2.0

Copied sources from
http://beesbuzz.biz/code/audiocompress/AudioCompress-2.0.tar.gz

[mk: created this patch under fluffy's name and fixed some gcc
signed/unsigned comparison warnings]

1 files changed, 0 insertions, 411 deletions

diff --git a/src/compress.c b/src/compress.c
deleted file mode 100644
index 27f223bd7..000000000
--- a/src/compress.c
+++ /dev/null
@@ -1,411 +0,0 @@
-/*
- * Copyright (C) 2003-2009 The Music Player Daemon Project
- * http://www.musicpd.org
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License along
- * with this program; if not, write to the Free Software Foundation, Inc.,
- * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
- */
-
-/*
- * Imported from AudioCompress by J. Shagam <fluffy@beesbuzz.biz>
- */
-
-#include "config.h"
-#include "compress.h"
-
-#include <glib.h>
-
-#include <stdint.h>
-#include <string.h>
-
-#ifdef USE_X
-#include <X11/Xlib.h>
-#include <X11/Xutil.h>
-
-static Display *display;
-static Window window;
-static Visual *visual;
-static int screen;
-static GC blackGC, whiteGC, blueGC, yellowGC, dkyellowGC, redGC;
-#endif
-
-static int *peaks;
-static int gainCurrent, gainTarget;
-
-static struct {
-	int show_mon;
-	int anticlip;
-	int target;
-	int gainmax;
-	int gainsmooth;
-	unsigned buckets;
-} prefs;
-
-#ifdef USE_X
-static int mon_init;
-#endif
-
-void CompressCfg(int show_mon, int anticlip, int target, int gainmax,
-		 int gainsmooth, unsigned buckets)
-{
-	static unsigned lastsize;
-
-	prefs.show_mon = show_mon;
-	prefs.anticlip = anticlip;
-	prefs.target = target;
-	prefs.gainmax = gainmax;
-	prefs.gainsmooth = gainsmooth;
-	prefs.buckets = buckets;
-
-	/* Allocate the peak structure */
-	peaks = g_realloc(peaks, sizeof(int)*prefs.buckets);
-
-	if (prefs.buckets > lastsize)
-		memset(peaks + lastsize, 0, sizeof(int)*(prefs.buckets
-							 - lastsize));
-	lastsize = prefs.buckets;
-
-#ifdef USE_X
-	/* Configure the monitor window if needed */
-	if (show_mon && !mon_init)
-	{
-		display = XOpenDisplay(getenv("DISPLAY"));
-
-		/* We really shouldn't try to init X if there's no X */
-		if (!display)
-		{
-			fprintf(stderr,
-				"X not detected; disabling monitor window\n");
-			show_mon = prefs.show_mon = 0;
-		}
-	}
-
-	if (show_mon && !mon_init)
-	{
-		XGCValues gcv;
-		XColor col;
-	
-		gainCurrent = gainTarget = (1 << GAINSHIFT);
-
-
-
-		screen = DefaultScreen(display);
-		visual = DefaultVisual(display, screen);
-		window = XCreateSimpleWindow(display,
-					     RootWindow(display, screen),
-					     0, 0, prefs.buckets, 128 + 8, 0,
-					     BlackPixel(display, screen),
-					     WhitePixel(display, screen));
-		XStoreName(display, window, "AudioCompress monitor");
-	
-		gcv.foreground = BlackPixel(display, screen);
-		blackGC = XCreateGC(display, window, GCForeground, &gcv);
-		gcv.foreground = WhitePixel(display, screen);
-		whiteGC = XCreateGC(display, window, GCForeground, &gcv);
-		col.red = 0;
-		col.green = 0;
-		col.blue = 65535;
-		XAllocColor(display, DefaultColormap(display, screen), &col);
-		gcv.foreground = col.pixel;
-		blueGC = XCreateGC(display, window, GCForeground, &gcv);
-		col.red = 65535;
-		col.green = 65535;
-		col.blue = 0;
-		XAllocColor(display, DefaultColormap(display, screen), &col);
-		gcv.foreground = col.pixel;
-		yellowGC = XCreateGC(display, window, GCForeground, &gcv);
-		col.red = 32767;
-		col.green = 32767;
-		col.blue = 0;
-		XAllocColor(display, DefaultColormap(display, screen), &col);
-		gcv.foreground = col.pixel;
-		dkyellowGC = XCreateGC(display, window, GCForeground, &gcv);
-		col.red = 65535;
-		col.green = 0;
-		col.blue = 0;
-		XAllocColor(display, DefaultColormap(display, screen), &col);
-		gcv.foreground = col.pixel;
-		redGC = XCreateGC(display, window, GCForeground, &gcv);
-		mon_init = 1;
-	}
-
-	if (mon_init)
-	{
-		if (show_mon)
-			XMapWindow(display, window);
-		else
-			XUnmapWindow(display, window);
-		XResizeWindow(display, window, prefs.buckets, 128 + 8);
-		XFlush(display);
-	}
-#endif
-}
-
-void CompressFree(void)
-{
-#ifdef USE_X
-	if (mon_init)
-	{
-		XFreeGC(display, blackGC);
-		XFreeGC(display, whiteGC);
-		XFreeGC(display, blueGC);
-		XFreeGC(display, yellowGC);
-		XFreeGC(display, dkyellowGC);
-		XFreeGC(display, redGC);
-		XDestroyWindow(display, window);
-		XCloseDisplay(display);
-	}
-#endif
-
-	g_free(peaks);
-}
-
-void CompressDo(void *data, unsigned int length)
-{
-	int16_t *audio = (int16_t *)data, *ap;
-	int peak;
-	unsigned int i, pos;
-	int gr, gf, gn;
-	static int pn = -1;
-#ifdef STATS
-	static int clip;
-#endif
-	static int clipped;
-
-	if (!peaks)
-		return;
-
-	if (pn == -1)
-	{
-		for (i = 0; i < prefs.buckets; i++)
-			peaks[i] = 0;
-	}
-	pn = (pn + 1)%prefs.buckets;
-
-#ifdef DEBUG
-	fprintf(stderr, "modifyNative16(0x%08x, %d)\n",(unsigned int)data,
-		length);
-#endif
-
-	/* Determine peak's value and position */
-	peak = 1;
-	pos = 0;
-
-#ifdef DEBUG
-	fprintf(stderr, "finding peak(b=%d)\n", pn);
-#endif
-
-	ap = audio;
-	for (i = 0; i < length/2; i++)
-	{
-		int val = *ap;
-		if (val > peak)
-		{
-			peak = val;
-			pos = i;
-		} else if (-val > peak)
-		{
-			peak = -val;
-			pos = i;
-		}
-		ap++;
-	}
-	peaks[pn] = peak;
-
-	/* Only draw if needed, of course */
-#ifdef USE_X
-	if (prefs.show_mon)
-	{
-		/* current amplitude */
-		XDrawLine(display, window, whiteGC,
-			  pn, 0,
-			  pn,
-			  127 -
-			  (peaks[pn]*gainCurrent >> (GAINSHIFT + 8)));
-
-		/* amplification */
-		XDrawLine(display, window, yellowGC,
-			  pn,
-			  127 - (peaks[pn]*gainCurrent
-				 >> (GAINSHIFT + 8)),
-			  pn, 127);
-
-		/* peak */
-		XDrawLine(display, window, blackGC,
-			  pn, 127 - (peaks[pn] >> 8), pn, 127);
-
-		/* clip indicator */
-		if (clipped)
-			XDrawLine(display, window, redGC,
-				  (pn + prefs.buckets - 1)%prefs.buckets,
-				  126 - clipped/(length*512),
-				  (pn + prefs.buckets - 1)%prefs.buckets,
-				  127);
-		clipped = 0;
-
-		/* target line */
-		/* XDrawPoint(display, window, redGC, */
-		/*         pn, 127 - TARGET/256); */
-		/* amplification edge */
-		XDrawLine(display, window, dkyellowGC,
-			  pn,
-			  127 - (peaks[pn]*gainCurrent
-				 >> (GAINSHIFT + 8)),
-			  pn - 1,
-			  127 -
-			  (peaks[(pn + prefs.buckets
-				  - 1)%prefs.buckets]*gainCurrent
-			   >> (GAINSHIFT + 8)));
-	}
-#endif
-
-	for (i = 0; i < prefs.buckets; i++)
-	{
-		if (peaks[i] > peak)
-		{
-			peak = peaks[i];
-			pos = 0;
-		}
-	}
-
-	/* Determine target gain */
-	gn = (1 << GAINSHIFT)*prefs.target/peak;
-
-	if (gn <(1 << GAINSHIFT))
-		gn = 1 << GAINSHIFT;
-
-	gainTarget = (gainTarget *((1 << prefs.gainsmooth) - 1) + gn)
-				      >> prefs.gainsmooth;
-
-	/* Give it an extra insignifigant nudge to counteract possible
-	** rounding error
-	*/
-
-	if (gn < gainTarget)
-		gainTarget--;
-	else if (gn > gainTarget)
-		gainTarget++;
-
-	if (gainTarget > prefs.gainmax << GAINSHIFT)
-		gainTarget = prefs.gainmax << GAINSHIFT;
-
-
-#ifdef USE_X
-	if (prefs.show_mon)
-	{
-		int x;
-
-		/* peak*gain */
-		XDrawPoint(display, window, redGC,
-			   pn,
-			   127 - (peak*gainCurrent
-				  >> (GAINSHIFT + 8)));
-
-		/* gain indicator */
-		XFillRectangle(display, window, whiteGC, 0, 128,
-			       prefs.buckets, 8);
-		x = (gainTarget - (1 << GAINSHIFT))*prefs.buckets
-			/ ((prefs.gainmax - 1) << GAINSHIFT);
-		XDrawLine(display, window, redGC, x,
-			  128, x, 128 + 8);
-
-		x = (gn - (1 << GAINSHIFT))*prefs.buckets
-			/ ((prefs.gainmax - 1) << GAINSHIFT);
-
-		XDrawLine(display, window, blackGC,
-			  x, 132 - 1,
-			  x, 132 + 1);
-
-		/* blue peak line */
-		XDrawLine(display, window, blueGC,
-			  0, 127 - (peak >> 8), prefs.buckets,
-			  127 - (peak >> 8));
-		XFlush(display);
-		XDrawLine(display, window, whiteGC,
-			  0, 127 - (peak >> 8), prefs.buckets,
-			  127 - (peak >> 8));
-	}
-#endif
-
-	/* See if a peak is going to clip */
-	gn = (1 << GAINSHIFT)*32768/peak;
-
-	if (gn < gainTarget)
-	{
-		gainTarget = gn;
-
-		if (prefs.anticlip)
-			pos = 0;
-
-	} else
-	{
-		/* We're ramping up, so draw it out over the whole frame */
-		pos = length;
-	}
-
-	/* Determine gain rate necessary to make target */
-	if (!pos)
-		pos = 1;
-
-	gr = ((gainTarget - gainCurrent) << 16)/(int)pos;
-
-	/* Do the shiznit */
-	gf = gainCurrent << 16;
-
-#ifdef STATS
-	fprintf(stderr, "\rgain = %2.2f%+.2e ",
-		gainCurrent*1.0/(1 << GAINSHIFT),
-		(gainTarget - gainCurrent)*1.0/(1 << GAINSHIFT));
-#endif
-
-	ap = audio;
-	for (i = 0; i < length/2; i++)
-	{
-		int sample;
-
-		/* Interpolate the gain */
-		gainCurrent = gf >> 16;
-		if (i < pos)
-			gf += gr;
-		else if (i == pos)
-			gf = gainTarget << 16;
-
-		/* Amplify */
-		sample = (*ap)*gainCurrent >> GAINSHIFT;
-		if (sample < -32768)
-		{
-#ifdef STATS
-			clip++;
-#endif
-			clipped += -32768 - sample;
-			sample = -32768;
-		} else if (sample > 32767)
-		{
-#ifdef STATS
-			clip++;
-#endif
-			clipped += sample - 32767;
-			sample = 32767;
-		}
-		*ap++ = sample;
-	}
-#ifdef STATS
-	fprintf(stderr, "clip %d b%-3d ", clip, pn);
-#endif
-
-#ifdef DEBUG
-	fprintf(stderr, "\ndone\n");
-#endif
-}
-