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-rw-r--r--src/compress.c410
1 files changed, 0 insertions, 410 deletions
diff --git a/src/compress.c b/src/compress.c
deleted file mode 100644
index 3a0b4beb0..000000000
--- a/src/compress.c
+++ /dev/null
@@ -1,410 +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 "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
-}
-
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