mirror of
https://git.code.sf.net/p/quake/quakeforge
synced 2025-02-19 18:30:46 +00:00
A couple of small optimizations. If you are exiting early, avoid some stuff
only needed later. And reduce worst-case number of if tests in a few places.
This commit is contained in:
Ragnvald Maartmann-Moe IV
parent
7f3d5164e6
commit
2342dfcd8f
3 changed files with 77 additions and 70 deletions
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@ -346,26 +346,23 @@ static void
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s_start_sound (int entnum, int entchannel, sfx_t *sfx, const vec3_t origin,
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float fvol, float attenuation)
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{
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int ch_idx, vol;
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int ch_idx, vol;
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unsigned int skip;
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channel_t *target_chan, *check;
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channel_t *target_chan, *check;
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if (!sound_started)
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return;
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if (!sfx)
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return;
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if (nosound->int_val)
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return;
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vol = fvol * 255;
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// pick a channel to play on
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target_chan = s_pick_channel (entnum, entchannel);
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if (!target_chan)
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return;
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vol = fvol * 255;
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// spatialize
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memset (target_chan, 0, sizeof (*target_chan));
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VectorCopy (origin, target_chan->origin);
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@ -435,9 +432,7 @@ s_stop_sound (int entnum, int entchannel)
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static void
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s_clear_buffer (void)
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{
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int clear;
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int i;
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int clear, i;
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if (!sound_started || !shm || !shm->buffer)
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return;
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@ -500,7 +495,7 @@ s_static_sound (sfx_t *sfx, const vec3_t origin, float vol,
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if (!sfx->retain (sfx))
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return;
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if (sfx->loopstart == (unsigned int)-1) {
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if (sfx->loopstart == (unsigned int) -1) {
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Sys_Printf ("Sound %s not looped\n", sfx->name);
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sfx->release (sfx);
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return;
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@ -533,7 +528,6 @@ s_updateAmbientSounds (void)
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if (!snd_ambient)
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return;
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// calc ambient sound levels
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if (!*render_data.worldmodel)
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return;
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@ -879,6 +873,7 @@ s_unblock_sound (void)
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{
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if (!snd_blocked)
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return;
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if (!--snd_blocked) {
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s_clear_buffer ();
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snd_output_funcs->pS_O_UnblockSound ();
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@ -1005,7 +1000,6 @@ s_init (void)
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static void
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s_shutdown (void)
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{
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if (!sound_started)
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return;
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@ -270,7 +270,7 @@ SND_StreamAdvance (sfxbuffer_t *buffer, unsigned int count)
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buffer->pos += count;
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if (buffer->pos >= sfx->length) {
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if (sfx->loopstart == (unsigned int)-1) {
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// reset the buffer and fill it incase it's needed again
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// reset the buffer and fill it in case it's needed again
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headpos = buffer->pos = 0;
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buffer->head = buffer->tail = 0;
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count = 0;
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@ -343,8 +343,7 @@ sfxbuffer_t *
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SND_GetCache (long samples, int rate, int inwidth, int channels,
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sfxblock_t *block, cache_allocator_t allocator)
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{
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int len, size;
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int width;
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int len, size, width;
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float stepscale;
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sfxbuffer_t *sc;
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sfx_t *sfx = block->sfx;
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@ -352,7 +351,7 @@ SND_GetCache (long samples, int rate, int inwidth, int channels,
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width = snd_loadas8bit->int_val ? 1 : 2;
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stepscale = (float) rate / shm->speed; // usually 0.5, 1, or 2
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len = size = samples / stepscale;
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//printf ("%ld %d\n", samples, size);
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// printf ("%ld %d\n", samples, size);
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size *= width * channels;
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sc = allocator (&block->cache, sizeof (sfxbuffer_t) + size, sfx->name);
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if (!sc)
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@ -396,7 +395,7 @@ SND_ResampleMono (sfxbuffer_t *sc, byte *data, int length, void *prev)
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stepscale = (float) inrate / shm->speed; // usually 0.5, 1, or 2
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outcount = length / stepscale;
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//printf ("%d %d\n", length, outcount);
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// printf ("%d %d\n", length, outcount);
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sc->sfx->length = info->samples / stepscale;
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if (info->loopstart != (unsigned int)-1)
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@ -425,21 +424,25 @@ SND_ResampleMono (sfxbuffer_t *sc, byte *data, int length, void *prev)
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// resample / decimate to the current source rate
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if (stepscale == 1) {
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if (inwidth == 1 && outwidth == 1) {
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for (i = 0; i < outcount; i++) {
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*ob++ = *ib++ - 128;
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if (inwidth == 1) {
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if (outwidth == 1) {
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for (i = 0; i < outcount; i++) {
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*ob++ = *ib++ - 128;
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}
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} else if (outwidth == 2) {
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for (i = 0; i < outcount; i++) {
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*os++ = (*ib++ - 128) << 8;
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}
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}
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} else if (inwidth == 1 && outwidth == 2) {
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for (i = 0; i < outcount; i++) {
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*os++ = (*ib++ - 128) << 8;
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}
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} else if (inwidth == 2 && outwidth == 1) {
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for (i = 0; i < outcount; i++) {
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*ob++ = LittleShort (*is++) >> 8;
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}
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} else if (inwidth == 2 && outwidth == 2) {
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for (i = 0; i < outcount; i++) {
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*os++ = LittleShort (*is++);
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} else if (inwidth == 2) {
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if (outwidth == 1) {
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for (i = 0; i < outcount; i++) {
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*ob++ = LittleShort (*is++) >> 8;
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}
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} else if (outwidth == 2) {
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for (i = 0; i < outcount; i++) {
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*os++ = LittleShort (*is++);
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}
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}
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}
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} else {
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@ -502,14 +505,13 @@ SND_ResampleMono (sfxbuffer_t *sc, byte *data, int length, void *prev)
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void
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SND_ResampleStereo (sfxbuffer_t *sc, byte *data, int length, void *prev)
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{
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int fracstep, outcount, sl, sr, samplefrac, srcsample, i;
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int fracstep, outcount, outwidth, samplefrac, srcsample, sl, sr, i;
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float stepscale;
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stereo8_t *ib, *ob, *pb;
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stereo16_t *is, *os, *ps;
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wavinfo_t *info = sc->sfx->wavinfo (sc->sfx);
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int inwidth = info->width;
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int inrate = info->rate;
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int outwidth;
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stereo16_t zero_s;
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stereo8_t zero_b;
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@ -566,25 +568,29 @@ SND_ResampleStereo (sfxbuffer_t *sc, byte *data, int length, void *prev)
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// resample / decimate to the current source rate
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if (stepscale == 1) {
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if (inwidth == 1 && outwidth == 1) {
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for (i = 0; i < outcount; i++, ob++, ib++) {
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ob->left = ib->left - 128;
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ob->right = ib->right - 128;
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if (inwidth == 1) {
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if (outwidth == 1) {
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for (i = 0; i < outcount; i++, ob++, ib++) {
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ob->left = ib->left - 128;
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ob->right = ib->right - 128;
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}
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} else if (outwidth == 2) {
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for (i = 0; i < outcount; i++, os++, ib++) {
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os->left = (ib->left - 128) << 8;
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os->right = (ib->right - 128) << 8;
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}
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}
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} else if (inwidth == 1 && outwidth == 2) {
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for (i = 0; i < outcount; i++, os++, ib++) {
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os->left = (ib->left - 128) << 8;
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os->right = (ib->right - 128) << 8;
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}
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} else if (inwidth == 2 && outwidth == 1) {
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for (i = 0; i < outcount; i++, ob++, ib++) {
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ob->left = LittleShort (is->left) >> 8;
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ob->right = LittleShort (is->right) >> 8;
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}
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} else if (inwidth == 2 && outwidth == 2) {
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for (i = 0; i < outcount; i++, os++, is++) {
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os->left = LittleShort (is->left);
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os->right = LittleShort (is->right);
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} else if (inwidth == 2) {
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if (outwidth == 1) {
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for (i = 0; i < outcount; i++, ob++, ib++) {
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ob->left = LittleShort (is->left) >> 8;
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ob->right = LittleShort (is->right) >> 8;
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}
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} else if (outwidth == 2) {
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for (i = 0; i < outcount; i++, os++, is++) {
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os->left = LittleShort (is->left);
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os->right = LittleShort (is->right);
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}
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}
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}
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} else {
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@ -697,25 +703,29 @@ SND_NoResampleStereo (sfxbuffer_t *sc, byte *data, int length, void *prev)
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if (!length)
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return;
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if (inwidth == 1 && outwidth == 1) {
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for (i = 0; i < outcount; i++, ob++, ib++) {
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ob->left = ib->left - 128;
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ob->right = ib->right - 128;
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if (inwidth == 1) {
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if (outwidth == 1) {
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for (i = 0; i < outcount; i++, ob++, ib++) {
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ob->left = ib->left - 128;
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ob->right = ib->right - 128;
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}
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} else if (outwidth == 2) {
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for (i = 0; i < outcount; i++, os++, ib++) {
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os->left = (ib->left - 128) << 8;
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os->right = (ib->right - 128) << 8;
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}
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}
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} else if (inwidth == 1 && outwidth == 2) {
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for (i = 0; i < outcount; i++, os++, ib++) {
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os->left = (ib->left - 128) << 8;
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os->right = (ib->right - 128) << 8;
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}
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} else if (inwidth == 2 && outwidth == 1) {
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for (i = 0; i < outcount; i++, ob++, ib++) {
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ob->left = LittleShort (is->left) >> 8;
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ob->right = LittleShort (is->right) >> 8;
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}
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} else if (inwidth == 2 && outwidth == 2) {
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for (i = 0; i < outcount; i++, os++, is++) {
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os->left = LittleShort (is->left);
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os->right = LittleShort (is->right);
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} else if (inwidth == 2) {
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if (outwidth == 1) {
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for (i = 0; i < outcount; i++, ob++, ib++) {
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ob->left = LittleShort (is->left) >> 8;
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ob->right = LittleShort (is->right) >> 8;
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}
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} else if (outwidth == 2) {
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for (i = 0; i < outcount; i++, os++, is++) {
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os->left = LittleShort (is->left);
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os->right = LittleShort (is->right);
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}
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}
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}
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{
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@ -451,6 +451,7 @@ SND_PaintChannelFrom16 (channel_t *ch, sfxbuffer_t *sc, int count)
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if (pos + count > sc->length) {
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unsigned int sub = sc->length - pos;
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snd_paint_mono_16 (0, ch, samps, sub);
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snd_paint_mono_16 (sub, ch, sc->data, count - sub);
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} else {
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@ -472,6 +473,7 @@ SND_PaintChannelStereo8 (channel_t *ch, sfxbuffer_t *sc, int count)
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if (pos + count > sc->length) {
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unsigned int sub = sc->length - pos;
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snd_paint_stereo_8 (0, ch, samps, sub);
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snd_paint_stereo_8 (sub, ch, sc->data, count - sub);
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} else {
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@ -493,6 +495,7 @@ SND_PaintChannelStereo16 (channel_t *ch, sfxbuffer_t *sc, int count)
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if (pos + count > sc->length) {
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unsigned int sub = sc->length - pos;
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snd_paint_stereo_16 (0, ch, samps, sub);
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snd_paint_stereo_16 (sub, ch, sc->data, count - sub);
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} else {
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