/*
-================
-ResampleSfx
-================
+====================
+Snd_CreateRingBuffer
+
+If "buffer" is NULL, the function allocates one buffer of "sampleframes" sample frames itself
+(if "sampleframes" is 0, the function chooses the size).
+====================
*/
-size_t ResampleSfx (const unsigned char *in_data, size_t in_length, const snd_format_t* in_format, unsigned char *out_data, const char* sfxname)
+snd_ringbuffer_t *Snd_CreateRingBuffer (const snd_format_t* format, unsigned int sampleframes, void* buffer)
{
- size_t srclength, outcount;
+ snd_ringbuffer_t *ringbuffer;
- srclength = in_length * in_format->channels;
- outcount = (double)in_length * shm->format.speed / in_format->speed;
+ // If the caller provides a buffer, it must give us its size
+ if (sampleframes == 0 && buffer != NULL)
+ return NULL;
- //Con_DPrintf("ResampleSfx(%s): %d samples @ %dHz -> %d samples @ %dHz\n",
- // sfxname, in_length, in_format->speed, outcount, shm->format.speed);
+ ringbuffer = (snd_ringbuffer_t*)Mem_Alloc(snd_mempool, sizeof (*ringbuffer));
+ memset(ringbuffer, 0, sizeof(*ringbuffer));
+ memcpy(&ringbuffer->format, format, sizeof(ringbuffer->format));
- // Trivial case (direct transfer)
- if (in_format->speed == shm->format.speed)
+ // If we haven't been given a buffer
+ if (buffer == NULL)
{
- if (in_format->width == 1)
- {
- size_t i;
+ unsigned int maxframes;
+ size_t memsize;
- for (i = 0; i < srclength; i++)
- ((signed char*)out_data)[i] = in_data[i] - 128;
- }
- else // if (in_format->width == 2)
- memcpy (out_data, in_data, srclength * in_format->width);
- }
+ if (sampleframes == 0)
+ maxframes = (format->speed + 1) / 2; // Make the sound buffer large enough for containing 0.5 sec of sound
+ else
+ maxframes = sampleframes;
- // General case (linear interpolation with a fixed-point fractional
- // step, 18-bit integer part and 14-bit fractional part)
- // Can handle up to 2^18 (262144) samples per second (> 96KHz stereo)
-# define FRACTIONAL_BITS 14
-# define FRACTIONAL_MASK ((1 << FRACTIONAL_BITS) - 1)
-# define INTEGER_BITS (sizeof(samplefrac)*8 - FRACTIONAL_BITS)
+ memsize = maxframes * format->width * format->channels;
+ ringbuffer->ring = (unsigned char *) Mem_Alloc(snd_mempool, memsize);
+ ringbuffer->maxframes = maxframes;
+ }
else
{
- const unsigned int fracstep = (double)in_format->speed / shm->format.speed * (1 << FRACTIONAL_BITS);
- size_t remain_in = srclength, total_out = 0;
- unsigned int samplefrac;
- const unsigned char *in_ptr = in_data;
- unsigned char *out_ptr = out_data;
-
- // Check that we can handle one second of that sound
- if (in_format->speed * in_format->channels > (1 << INTEGER_BITS))
- {
- Con_Printf ("ResampleSfx: sound quality too high for resampling (%uHz, %u channel(s))\n",
- in_format->speed, in_format->channels);
- return 0;
- }
-
- // We work 1 sec at a time to make sure we don't accumulate any
- // significant error when adding "fracstep" over several seconds, and
- // also to be able to handle very long sounds.
- while (total_out < outcount)
- {
- size_t tmpcount, interpolation_limit, i, j;
- unsigned int srcsample;
-
- samplefrac = 0;
-
- // If more than 1 sec of sound remains to be converted
- if (outcount - total_out > shm->format.speed)
- {
- tmpcount = shm->format.speed;
- interpolation_limit = tmpcount; // all samples can be interpolated
- }
- else
- {
- tmpcount = outcount - total_out;
- interpolation_limit = ceil((double)(((remain_in / in_format->channels) - 1) << FRACTIONAL_BITS) / fracstep);
- if (interpolation_limit > tmpcount)
- interpolation_limit = tmpcount;
- }
-
- // 16 bit samples
- if (in_format->width == 2)
- {
- const short* in_ptr_short;
-
- // Interpolated part
- for (i = 0; i < interpolation_limit; i++)
- {
- srcsample = (samplefrac >> FRACTIONAL_BITS) * in_format->channels;
- in_ptr_short = &((const short*)in_ptr)[srcsample];
-
- for (j = 0; j < in_format->channels; j++)
- {
- int a, b;
-
- a = *in_ptr_short;
- b = *(in_ptr_short + in_format->channels);
- *((short*)out_ptr) = (((b - a) * (samplefrac & FRACTIONAL_MASK)) >> FRACTIONAL_BITS) + a;
-
- in_ptr_short++;
- out_ptr += sizeof (short);
- }
-
- samplefrac += fracstep;
- }
-
- // Non-interpolated part
- for (/* nothing */; i < tmpcount; i++)
- {
- srcsample = (samplefrac >> FRACTIONAL_BITS) * in_format->channels;
- in_ptr_short = &((const short*)in_ptr)[srcsample];
-
- for (j = 0; j < in_format->channels; j++)
- {
- *((short*)out_ptr) = *in_ptr_short;
-
- in_ptr_short++;
- out_ptr += sizeof (short);
- }
-
- samplefrac += fracstep;
- }
- }
- // 8 bit samples
- else // if (in_format->width == 1)
- {
- const unsigned char* in_ptr_byte;
-
- // Convert up to 1 sec of sound
- for (i = 0; i < interpolation_limit; i++)
- {
- srcsample = (samplefrac >> FRACTIONAL_BITS) * in_format->channels;
- in_ptr_byte = &((const unsigned char*)in_ptr)[srcsample];
-
- for (j = 0; j < in_format->channels; j++)
- {
- int a, b;
-
- a = *in_ptr_byte - 128;
- b = *(in_ptr_byte + in_format->channels) - 128;
- *((signed char*)out_ptr) = (((b - a) * (samplefrac & FRACTIONAL_MASK)) >> FRACTIONAL_BITS) + a;
-
- in_ptr_byte++;
- out_ptr += sizeof (signed char);
- }
-
- samplefrac += fracstep;
- }
-
- // Non-interpolated part
- for (/* nothing */; i < tmpcount; i++)
- {
- srcsample = (samplefrac >> FRACTIONAL_BITS) * in_format->channels;
- in_ptr_byte = &((const unsigned char*)in_ptr)[srcsample];
-
- for (j = 0; j < in_format->channels; j++)
- {
- *((signed char*)out_ptr) = *in_ptr_byte - 128;
-
- in_ptr_byte++;
- out_ptr += sizeof (signed char);
- }
-
- samplefrac += fracstep;
- }
- }
-
- // Update the counters and the buffer position
- remain_in -= in_format->speed * in_format->channels;
- in_ptr += in_format->speed * in_format->channels * in_format->width;
- total_out += tmpcount;
- }
+ ringbuffer->ring = (unsigned char *) buffer;
+ ringbuffer->maxframes = sampleframes;
}
- return outcount;
+ return ringbuffer;
}
+
//=============================================================================
/*
S_LoadSound
==============
*/
-qboolean S_LoadSound (sfx_t *s, qboolean complain)
+qboolean S_LoadSound (sfx_t *sfx, qboolean complain)
{
char namebuffer[MAX_QPATH + 16];
size_t len;
- if (!shm || !shm->format.speed)
- return false;
+ // See if already loaded
+ if (sfx->fetcher != NULL)
+ return true;
// If we weren't able to load it previously, no need to retry
- if (s->flags & SFXFLAG_FILEMISSING)
+ // Note: S_PrecacheSound clears this flag to cause a retry
+ if (sfx->flags & SFXFLAG_FILEMISSING)
return false;
- // See if in memory
- if (s->fetcher != NULL)
- {
- if (s->format.speed != shm->format.speed)
- Con_Printf ("S_LoadSound: sound %s hasn't been resampled (%uHz instead of %uHz)\n", s->name);
- return true;
- }
+ // No sound?
+ if (snd_renderbuffer == NULL)
+ return false;
+
+ // Initialize volume peak to 0; if ReplayGain is supported, the loader will change this away
+ sfx->volume_peak = 0.0;
+
+ if (developer_loading.integer)
+ Con_Printf("loading sound %s\n", sfx->name);
- // LordHavoc: if the sound filename does not begin with sound/, try adding it
- if (strncasecmp(s->name, "sound/", 6))
+ SCR_PushLoadingScreen(true, sfx->name, 1);
+
+ // LadyHavoc: if the sound filename does not begin with sound/, try adding it
+ if (strncasecmp(sfx->name, "sound/", 6))
{
- len = dpsnprintf (namebuffer, sizeof(namebuffer), "sound/%s", s->name);
- if (len < 0)
+ dpsnprintf (namebuffer, sizeof(namebuffer), "sound/%s", sfx->name);
+ len = strlen(namebuffer);
+ if (len >= 4 && !strcasecmp (namebuffer + len - 4, ".wav"))
{
- // name too long
- Con_Printf("S_LoadSound: name \"%s\" is too long\n", s->name);
- return false;
+ if (S_LoadWavFile (namebuffer, sfx))
+ goto loaded;
+ memcpy (namebuffer + len - 3, "ogg", 4);
+ }
+ if (len >= 4 && !strcasecmp (namebuffer + len - 4, ".ogg"))
+ {
+ if (OGG_LoadVorbisFile (namebuffer, sfx))
+ goto loaded;
}
- if (S_LoadWavFile (namebuffer, s))
- return true;
- if (len >= 4 && !strcasecmp (namebuffer + len - 4, ".wav"))
- strcpy (namebuffer + len - 3, "ogg");
- if (OGG_LoadVorbisFile (namebuffer, s))
- return true;
}
- // LordHavoc: then try without the added sound/ as wav and ogg
- len = dpsnprintf (namebuffer, sizeof(namebuffer), "%s", s->name);
- if (len < 0)
+ // LadyHavoc: then try without the added sound/ as wav and ogg
+ dpsnprintf (namebuffer, sizeof(namebuffer), "%s", sfx->name);
+ len = strlen(namebuffer);
+ // request foo.wav: tries foo.wav, then foo.ogg
+ // request foo.ogg: tries foo.ogg only
+ // request foo.mod: tries foo.mod only
+ if (len >= 4 && !strcasecmp (namebuffer + len - 4, ".wav"))
{
- // name too long
- Con_Printf("S_LoadSound: name \"%s\" is too long\n", s->name);
- return false;
+ if (S_LoadWavFile (namebuffer, sfx))
+ goto loaded;
+ memcpy (namebuffer + len - 3, "ogg", 4);
+ }
+ if (len >= 4 && !strcasecmp (namebuffer + len - 4, ".ogg"))
+ {
+ if (OGG_LoadVorbisFile (namebuffer, sfx))
+ goto loaded;
}
- if (S_LoadWavFile (namebuffer, s))
- return true;
- if (len >= 4 && !strcasecmp (namebuffer + len - 4, ".wav"))
- strcpy (namebuffer + len - 3, "ogg");
- if (OGG_LoadVorbisFile (namebuffer, s))
- return true;
// Can't load the sound!
- s->flags |= SFXFLAG_FILEMISSING;
+ sfx->flags |= SFXFLAG_FILEMISSING;
if (complain)
- Con_Printf("S_LoadSound: Couldn't load \"%s\"\n", s->name);
+ Con_DPrintf("failed to load sound \"%s\"\n", sfx->name);
+
+ SCR_PopLoadingScreen(false);
return false;
+
+loaded:
+ SCR_PopLoadingScreen(false);
+ return true;
}