added S_RawSamples_Enqueue, S_RawSamples_Dequeue, and S_RawSamples_ClearQueue functio...
authorhavoc <havoc@d7cf8633-e32d-0410-b094-e92efae38249>
Thu, 25 Jul 2002 02:43:33 +0000 (02:43 +0000)
committerhavoc <havoc@d7cf8633-e32d-0410-b094-e92efae38249>
Thu, 25 Jul 2002 02:43:33 +0000 (02:43 +0000)
git-svn-id: svn://svn.icculus.org/twilight/trunk/darkplaces@2080 d7cf8633-e32d-0410-b094-e92efae38249

snd_dma.c
snd_mix.c
sound.h

index 37881b5..836227e 100644 (file)
--- a/snd_dma.c
+++ b/snd_dma.c
@@ -8,7 +8,7 @@ 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.  
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
 
 See the GNU General Public License for more details.
 
@@ -27,6 +27,7 @@ Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
 
 void S_Play(void);
 void S_PlayVol(void);
+void S_Play2(void);
 void S_SoundList(void);
 void S_Update_();
 void S_StopAllSounds(qboolean clear);
@@ -36,33 +37,35 @@ void S_StopAllSoundsC(void);
 // Internal sound data & structures
 // =======================================================================
 
-channel_t   channels[MAX_CHANNELS];
-int                    total_channels;
+channel_t channels[MAX_CHANNELS];
+int total_channels;
 
-int                            snd_blocked = 0;
-static qboolean        snd_ambient = 1;
-qboolean               snd_initialized = false;
+int snd_blocked = 0;
+static qboolean snd_ambient = 1;
+qboolean snd_initialized = false;
 
 // pointer should go away
-volatile dma_t  *shm = 0;
+volatile dma_t *shm = 0;
 volatile dma_t sn;
 
-vec3_t         listener_origin;
-vec3_t         listener_forward;
-vec3_t         listener_right;
-vec3_t         listener_up;
-vec_t          sound_nominal_clip_dist=1000.0;
+vec3_t listener_origin;
+vec3_t listener_forward;
+vec3_t listener_right;
+vec3_t listener_up;
+vec_t sound_nominal_clip_dist=1000.0;
+mempool_t *snd_mempool;
 
-int                    soundtime;              // sample PAIRS
-int            paintedtime;    // sample PAIRS
+// sample PAIRS
+int soundtime;
+int paintedtime;
 
 
 //LordHavoc: increased the client sound limit from 512 to 4096 for the Nehahra movie
-#define        MAX_SFX         4096
-sfx_t          *known_sfx;             // hunk allocated [MAX_SFX]
-int                    num_sfx;
+#define MAX_SFX 4096
+sfx_t *known_sfx; // allocated [MAX_SFX]
+int num_sfx;
 
-sfx_t          *ambient_sfx[NUM_AMBIENTS];
+sfx_t *ambient_sfx[NUM_AMBIENTS];
 
 int sound_started = 0;
 
@@ -114,14 +117,14 @@ void S_SoundInfo_f(void)
                Con_Printf ("sound system not started\n");
                return;
        }
-       
-    Con_Printf("%5d stereo\n", shm->channels - 1);
-    Con_Printf("%5d samples\n", shm->samples);
-    Con_Printf("%5d samplepos\n", shm->samplepos);
-    Con_Printf("%5d samplebits\n", shm->samplebits);
-    Con_Printf("%5d submission_chunk\n", shm->submission_chunk);
-    Con_Printf("%5d speed\n", shm->speed);
-    Con_Printf("0x%x dma buffer\n", shm->buffer);
+
+       Con_Printf("%5d stereo\n", shm->channels - 1);
+       Con_Printf("%5d samples\n", shm->samples);
+       Con_Printf("%5d samplepos\n", shm->samplepos);
+       Con_Printf("%5d samplebits\n", shm->samplebits);
+       Con_Printf("%5d submission_chunk\n", shm->submission_chunk);
+       Con_Printf("%5d speed\n", shm->speed);
+       Con_Printf("0x%x dma buffer\n", shm->buffer);
        Con_Printf("%5d total_channels\n", total_channels);
 }
 
@@ -131,10 +134,9 @@ void S_SoundInfo_f(void)
 S_Startup
 ================
 */
-
 void S_Startup (void)
 {
-       int             rc;
+       int rc;
 
        if (!snd_initialized)
                return;
@@ -154,11 +156,6 @@ void S_Startup (void)
        sound_started = 1;
 }
 
-
-void S_Play2(void);
-
-mempool_t *snd_mempool;
-
 /*
 ================
 S_Init
@@ -168,6 +165,8 @@ void S_Init (void)
 {
        Con_Printf("\nSound Initialization\n");
 
+       S_RawSamples_ClearQueue();
+
        Cvar_RegisterVariable(&volume);
        Cvar_RegisterVariable(&bgmvolume);
 
@@ -1031,3 +1030,71 @@ void S_EndPrecaching (void)
 {
 }
 
+
+#define RAWSAMPLESBUFFER 32768
+short s_rawsamplesbuffer[RAWSAMPLESBUFFER * 2];
+int s_rawsamplesbuffer_start;
+int s_rawsamplesbuffer_count;
+
+void S_RawSamples_Enqueue(short *samples, unsigned int length)
+{
+       int b2, b3;
+       //Con_Printf("S_RawSamples_Enqueue: %i samples\n", length);
+       if (s_rawsamplesbuffer_count + length > RAWSAMPLESBUFFER)
+               return;
+       b2 = (s_rawsamplesbuffer_start + s_rawsamplesbuffer_count) % RAWSAMPLESBUFFER;
+       b3 = (s_rawsamplesbuffer_start + s_rawsamplesbuffer_count + length) % RAWSAMPLESBUFFER;
+       if (b3 < b2)
+       {
+               memcpy(s_rawsamplesbuffer + b2 * 2, samples, (RAWSAMPLESBUFFER - b2) * sizeof(short[2]));
+               memcpy(s_rawsamplesbuffer, samples + (RAWSAMPLESBUFFER - b2) * 2, b3 * sizeof(short[2]));
+       }
+       else
+               memcpy(s_rawsamplesbuffer + b2 * 2, samples, length * sizeof(short[2]));
+       s_rawsamplesbuffer_count += length;
+}
+
+void S_RawSamples_Dequeue(int *samples, unsigned int length)
+{
+       int b1, b2, l;
+       int i;
+       short *in;
+       int *out;
+       int count;
+       l = length;
+       if (l > s_rawsamplesbuffer_count)
+               l = s_rawsamplesbuffer_count;
+       b1 = (s_rawsamplesbuffer_start) % RAWSAMPLESBUFFER;
+       b2 = (s_rawsamplesbuffer_start + l) % RAWSAMPLESBUFFER;
+       if (b2 < b1)
+       {
+               //memcpy(samples, s_rawsamplesbuffer + b1 * 2, (RAWSAMPLESBUFFER - b1) * sizeof(short[2]));
+               //memcpy(samples + (RAWSAMPLESBUFFER - b1) * 2, s_rawsamplesbuffer, b2 * sizeof(short[2]));
+               for (out = samples, in = s_rawsamplesbuffer + b1 * 2, count = (RAWSAMPLESBUFFER - b1) * 2, i = 0;i < count;i++)
+                       out[i] = in[i];
+               for (out = samples + (RAWSAMPLESBUFFER - b1) * 2, in = s_rawsamplesbuffer, count = b2 * 2, i = 0;i < count;i++)
+                       out[i] = in[i];
+               //Con_Printf("S_RawSamples_Dequeue: buffer wrap %i %i\n", (RAWSAMPLESBUFFER - b1), b2);
+       }
+       else
+       {
+               //memcpy(samples, s_rawsamplesbuffer + b1 * 2, l * sizeof(short[2]));
+               for (out = samples, in = s_rawsamplesbuffer + b1 * 2, count = l * 2, i = 0;i < count;i++)
+                       out[i] = in[i];
+               //Con_Printf("S_RawSamples_Dequeue: normal      %i\n", l);
+       }
+       if (l < length)
+       {
+               memset(samples + l * 2, 0, (length - l) * sizeof(int[2]));
+               //Con_Printf("S_RawSamples_Dequeue: padding with %i\n", length - l);
+       }
+       s_rawsamplesbuffer_start = (s_rawsamplesbuffer_start + l) % RAWSAMPLESBUFFER;
+       s_rawsamplesbuffer_count -= l;
+}
+
+void S_RawSamples_ClearQueue(void)
+{
+       s_rawsamplesbuffer_count = 0;
+       s_rawsamplesbuffer_start = 0;
+}
+
index d4dadba..96f2023 100644 (file)
--- a/snd_mix.c
+++ b/snd_mix.c
@@ -267,11 +267,11 @@ void SND_PaintChannelFrom16 (channel_t *ch, sfxcache_t *sc, int endtime);
 
 void S_PaintChannels(int endtime)
 {
-       int     i;
-       int     end;
+       int i;
+       int end;
        channel_t *ch;
-       sfxcache_t      *sc;
-       int             ltime, count;
+       sfxcache_t *sc;
+       int ltime, count;
 
        while (paintedtime < endtime)
        {
@@ -280,8 +280,8 @@ void S_PaintChannels(int endtime)
                if (endtime - paintedtime > PAINTBUFFER_SIZE)
                        end = paintedtime + PAINTBUFFER_SIZE;
 
-               // clear the paint buffer
-               memset(paintbuffer, 0, (end - paintedtime) * sizeof(portable_samplepair_t));
+               // clear the paint buffer, filling it with data from rawsamples (music/video/whatever)
+               S_RawSamples_Dequeue(&paintbuffer->left, end - paintedtime);
 
                // paint in the channels.
                ch = channels;
@@ -331,7 +331,6 @@ void S_PaintChannels(int endtime)
                                        }
                                }
                        }
-
                }
 
                // transfer out according to DMA format
diff --git a/sound.h b/sound.h
index f50b580..5ab1c4d 100644 (file)
--- a/sound.h
+++ b/sound.h
@@ -180,5 +180,12 @@ void S_AmbientOn (void);
 void *S_LockBuffer(void);
 void S_UnlockBuffer(void);
 
+// add some data to the tail of the rawsamples queue
+void S_RawSamples_Enqueue(short *samples, unsigned int length);
+// read and remove some data from the head of the rawsamples queue
+void S_RawSamples_Dequeue(int *samples, unsigned int length);
+// empty the rawsamples queue
+void S_RawSamples_ClearQueue(void);
+
 #endif