From e2de64d6f1beb9e492daf5b886e19933c1fa41dd Mon Sep 17 00:00:00 2001
From: toma <toma@283d02a7-25f6-0310-bc7c-ecb5cbfe19da>
Date: Wed, 25 Nov 2009 17:56:58 +0000
Subject: Copy the KDE 3.5 branch to branches/trinity for new KDE 3.5 features.
 BUG:215923

git-svn-id: svn://anonsvn.kde.org/home/kde/branches/trinity/kdemultimedia@1054174 283d02a7-25f6-0310-bc7c-ecb5cbfe19da
---
 mpg123_artsplugin/mpg123/audio.c | 298 +++++++++++++++++++++++++++++++++++++++
 1 file changed, 298 insertions(+)
 create mode 100644 mpg123_artsplugin/mpg123/audio.c

(limited to 'mpg123_artsplugin/mpg123/audio.c')

diff --git a/mpg123_artsplugin/mpg123/audio.c b/mpg123_artsplugin/mpg123/audio.c
new file mode 100644
index 00000000..b37c6659
--- /dev/null
+++ b/mpg123_artsplugin/mpg123/audio.c
@@ -0,0 +1,298 @@
+
+#include "mpg123.h"
+
+void audio_info_struct_init(struct audio_info_struct *ai)
+{
+#ifdef AUDIO_USES_FD
+  ai->fn = -1;
+#endif
+#ifdef SGI
+#if 0
+  ALconfig config;
+  ALport port;
+#endif
+#endif
+  ai->rate = -1;
+  ai->gain = -1;
+  ai->output = -1;
+#ifdef ALSA
+  ai->handle = NULL;
+  ai->alsa_format.format = -1;
+  ai->alsa_format.rate = -1;
+  ai->alsa_format.channels = -1;
+#endif
+  ai->device = NULL;
+  ai->channels = -1;
+  ai->format = -1;
+}
+
+#define NUM_CHANNELS 2
+#define NUM_ENCODINGS 6
+#define NUM_RATES 10
+
+struct audio_name audio_val2name[NUM_ENCODINGS+1] = {
+ { AUDIO_FORMAT_SIGNED_16  , "signed 16 bit" , "s16 " } ,
+ { AUDIO_FORMAT_UNSIGNED_16, "unsigned 16 bit" , "u16 " } ,  
+ { AUDIO_FORMAT_UNSIGNED_8 , "unsigned 8 bit" , "u8  " } ,
+ { AUDIO_FORMAT_SIGNED_8   , "signed 8 bit" , "s8  " } ,
+ { AUDIO_FORMAT_ULAW_8     , "mu-law (8 bit)" , "ulaw " } ,
+ { AUDIO_FORMAT_ALAW_8     , "a-law (8 bit)" , "alaw " } ,
+ { -1 , NULL }
+};
+
+#if 0
+static char *channel_name[NUM_CHANNELS] = 
+ { "mono" , "stereo" };
+#endif
+
+static int channels[NUM_CHANNELS] = { 1 , 2 };
+static int rates[NUM_RATES] = { 
+	 8000, 11025, 12000, 
+	16000, 22050, 24000,
+	32000, 44100, 48000,
+	8000	/* 8000 = dummy for user forced */
+
+};
+static int encodings[NUM_ENCODINGS] = {
+ AUDIO_FORMAT_SIGNED_16, 
+ AUDIO_FORMAT_UNSIGNED_16,
+ AUDIO_FORMAT_UNSIGNED_8,
+ AUDIO_FORMAT_SIGNED_8,
+ AUDIO_FORMAT_ULAW_8,
+ AUDIO_FORMAT_ALAW_8
+};
+
+static char capabilities[NUM_CHANNELS][NUM_ENCODINGS][NUM_RATES];
+
+void audio_capabilities(struct audio_info_struct *ai)
+{
+	int fmts;
+	int i,j,k,k1=NUM_RATES-1;
+	struct audio_info_struct ai1 = *ai;
+
+        if (param.outmode != DECODE_AUDIO) {
+		memset(capabilities,1,sizeof(capabilities));
+		return;
+	}
+
+	memset(capabilities,0,sizeof(capabilities));
+	if(param.force_rate) {
+		rates[NUM_RATES-1] = param.force_rate;
+		k1 = NUM_RATES;
+	}
+
+#ifndef NO_DECODE_AUDIO
+	if(audio_open(&ai1) < 0) {
+		perror("audio");
+		exit(1);
+	}
+#endif
+
+	for(i=0;i<NUM_CHANNELS;i++) {
+		for(j=0;j<NUM_RATES;j++) {
+			ai1.channels = channels[i];
+			ai1.rate = rates[j];
+			fmts = audio_get_formats(&ai1);
+			if(fmts < 0)
+				continue;
+			for(k=0;k<NUM_ENCODINGS;k++) {
+				if((fmts & encodings[k]) == encodings[k])
+					capabilities[i][k][j] = 1;
+			}
+		}
+	}
+
+#ifndef NO_DECODE_AUDIO
+	audio_close(&ai1);
+#endif
+
+	if(param.verbose > 1) {
+		fprintf(stderr,"\nAudio capabilities:\n        |");
+		for(j=0;j<NUM_ENCODINGS;j++) {
+			fprintf(stderr," %5s |",audio_val2name[j].sname);
+		}
+		fprintf(stderr,"\n --------------------------------------------------------\n");
+		for(k=0;k<k1;k++) {
+			fprintf(stderr," %5d  |",rates[k]);
+			for(j=0;j<NUM_ENCODINGS;j++) {
+				if(capabilities[0][j][k]) {
+					if(capabilities[1][j][k])
+						fprintf(stderr,"  M/S  |");
+					else
+						fprintf(stderr,"   M   |");
+				}
+				else if(capabilities[1][j][k])
+					fprintf(stderr,"   S   |");
+				else
+					fprintf(stderr,"       |");
+			}
+			fprintf(stderr,"\n");
+		}
+		fprintf(stderr,"\n");
+	}
+}
+
+static int rate2num(int r)
+{
+	int i;
+	for(i=0;i<NUM_RATES;i++) 
+		if(rates[i] == r)
+			return i;
+	return -1;
+}
+
+
+static int audio_fit_cap_helper(struct audio_info_struct *ai,int rn,int f0,int f2,int c)
+{
+	int i;
+
+        if(rn >= 0) {
+                for(i=f0;i<f2;i++) {
+                        if(capabilities[c][i][rn]) {
+                                ai->rate = rates[rn];
+                                ai->format = encodings[i];
+                                ai->channels = channels[c];
+				return 1;
+                        }
+                }
+        }
+	return 0;
+
+}
+
+/*
+ * c=num of channels of stream
+ * r=rate of stream
+ */
+void audio_fit_capabilities(struct audio_info_struct *ai,int c,int r)
+{
+	int rn;
+	int f0=0;
+	int save_channels = c;
+	int save_rate = r;
+	
+	if(param.force_8bit) {
+		f0 = 2;
+	}
+
+	c--; /* stereo=1 ,mono=0 */
+
+	if(param.force_mono >= 0)
+		c = 0;
+	if(param.force_stereo)
+		c = 1;
+
+	if(param.force_rate) {
+		rn = rate2num(param.force_rate);
+		if(audio_fit_cap_helper(ai,rn,f0,2,c))
+			return;
+		if(audio_fit_cap_helper(ai,rn,2,NUM_ENCODINGS,c))
+			return;
+
+		if(c == 1 && !param.force_stereo)
+			c = 0;
+		else if(c == 0 && !param.force_mono)
+			c = 1;
+
+		if(audio_fit_cap_helper(ai,rn,f0,2,c))
+			return;
+		if(audio_fit_cap_helper(ai,rn,2,NUM_ENCODINGS,c))
+			return;
+	}
+        else {
+
+	rn = rate2num(r>>0);
+	if(audio_fit_cap_helper(ai,rn,f0,2,c))
+		return;
+        rn = rate2num(r<<1);
+        if(audio_fit_cap_helper(ai,rn,f0,2,c))
+                return;
+        rn = rate2num(r<<2);
+        if(audio_fit_cap_helper(ai,rn,f0,2,c))
+                return;
+	rn = rate2num(r>>1);
+	if(audio_fit_cap_helper(ai,rn,f0,2,c))
+		return;
+	rn = rate2num(r>>2);
+	if(audio_fit_cap_helper(ai,rn,f0,2,c))
+		return;
+
+	rn = rate2num(r>>0);
+	if(audio_fit_cap_helper(ai,rn,2,NUM_ENCODINGS,c))
+		return;
+        rn = rate2num(r<<1);
+        if(audio_fit_cap_helper(ai,rn,2,NUM_ENCODINGS,c))
+                return;
+        rn = rate2num(r<<2);
+        if(audio_fit_cap_helper(ai,rn,2,NUM_ENCODINGS,c))
+                return;
+	rn = rate2num(r>>1);
+	if(audio_fit_cap_helper(ai,rn,2,NUM_ENCODINGS,c))
+		return;
+	rn = rate2num(r>>2);
+	if(audio_fit_cap_helper(ai,rn,2,NUM_ENCODINGS,c))
+		return;
+
+
+        if(c == 1 && !param.force_stereo)
+		c = 0;
+        else if(c == 0 && !param.force_mono)
+                c = 1;
+
+        rn = rate2num(r>>0);
+        if(audio_fit_cap_helper(ai,rn,f0,2,c))
+                return;
+        rn = rate2num(r<<1);
+        if(audio_fit_cap_helper(ai,rn,f0,2,c))
+                return;
+        rn = rate2num(r<<2);
+        if(audio_fit_cap_helper(ai,rn,f0,2,c))
+                return;
+        rn = rate2num(r>>1);
+        if(audio_fit_cap_helper(ai,rn,f0,2,c))
+                return;
+        rn = rate2num(r>>2);
+        if(audio_fit_cap_helper(ai,rn,f0,2,c))
+                return;
+
+        rn = rate2num(r>>0);
+        if(audio_fit_cap_helper(ai,rn,2,NUM_ENCODINGS,c))
+                return;
+        rn = rate2num(r<<1);
+        if(audio_fit_cap_helper(ai,rn,2,NUM_ENCODINGS,c))
+                return;
+        rn = rate2num(r<<2);
+        if(audio_fit_cap_helper(ai,rn,2,NUM_ENCODINGS,c))
+                return;
+        rn = rate2num(r>>1);
+        if(audio_fit_cap_helper(ai,rn,2,NUM_ENCODINGS,c))
+                return;
+        rn = rate2num(r>>2);
+        if(audio_fit_cap_helper(ai,rn,2,NUM_ENCODINGS,c))
+                return;
+        }
+
+        fprintf(stderr,"\nAudiodevice: No supported audio rate found for %d Hz and %d channels !\n",save_rate,save_channels);
+        fprintf(stderr,"Use '-vv' to list all possible audio rates and\n");
+        fprintf(stderr,"choose a supported rate with the '-r <rate>' option.\n");
+
+	exit(1);
+}
+
+char *audio_encoding_name(int format)
+{
+	int i;
+
+	for(i=0;i<NUM_ENCODINGS;i++) {
+		if(audio_val2name[i].val == format)
+			return audio_val2name[i].name;
+	}
+	return "Unknown";
+}
+
+#if !defined(SOLARIS) && !defined(__NetBSD__) && !defined(AIX_UMS) || defined(NAS)
+void audio_queueflush(struct audio_info_struct *ai)
+{
+}
+#endif
+
-- 
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