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Couple fixes to last SDL_sound patch

This commit is contained in:
Jonas Kulla 2014-09-12 06:50:45 +02:00
parent 61b77c2027
commit 05041fdb03
1 changed files with 17 additions and 9 deletions
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26
patches/SDL_sound/ima-adpcm.patch
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@ -1,6 +1,6 @@
diff -r 719dade41745 decoders/wav.c
--- a/decoders/wav.c Wed Aug 15 23:52:18 2012 -0400
+++ b/decoders/wav.c Fri Sep 12 06:42:05 2014 +0200
+++ b/decoders/wav.c Fri Sep 12 06:50:35 2014 +0200
@@ -113,8 +113,9 @@
#define fmtID 0x20746D66 /* "fmt ", in ascii. */
@ -52,7 +52,7 @@ diff -r 719dade41745 decoders/wav.c
/* put other format-specific data here... */
} fmt;
} fmt_t;
@@ -614,6 +640,288 @@
@@ -614,6 +640,296 @@
/*****************************************************************************
@ -105,6 +105,7 @@ diff -r 719dade41745 decoders/wav.c
+{
+ int step = ima_step_table[state->iStepIndex];
+ int diff = 0;
+ int samp, index;
+
+ if (nibble & 0x4)
+ diff += step >> 0;
@ -118,11 +119,11 @@ diff -r 719dade41745 decoders/wav.c
+ if (nibble & 0x8)
+ diff = -diff;
+
+ int samp = state->iPrevSamp + diff;
+ samp = state->iPrevSamp + diff;
+ samp = SDL_max(SDL_min(samp, 32767), -32768);
+ state->iPrevSamp = samp;
+
+ int index = state->iStepIndex + ima_index_table[nibble];
+ index = state->iStepIndex + ima_index_table[nibble];
+ state->iStepIndex = SDL_max(SDL_min(index, 88), 0);
+
+ return samp;
@ -169,6 +170,7 @@ diff -r 719dade41745 decoders/wav.c
+ fmt_t *fmt = w->fmt;
+ void *const out_buf = internal->buffer;
+ Uint32 bw = 0;
+ int rc;
+
+ while (1)
+ {
@ -183,8 +185,14 @@ diff -r 719dade41745 decoders/wav.c
+ if (bw+fmt->fmt.ima.dec_frame_size > internal->buffer_size)
+ break;
+
+ read_ima_block_headers(internal->rw, fmt->fmt.ima.d,
+ fmt->wChannels, (Sint16*) (out_buf+bw));
+ rc = read_ima_block_headers(internal->rw, fmt->fmt.ima.d,
+ fmt->wChannels, (Sint16*) (out_buf+bw));
+
+ if (!rc)
+ {
+ sample->flags |= SOUND_SAMPLEFLAG_ERROR;
+ return 0;
+ } /* if */
+
+ w->bytesLeft -= fmt->fmt.ima.headerset_size;
+ bw += fmt->fmt.ima.dec_frame_size;
@ -202,7 +210,7 @@ diff -r 719dade41745 decoders/wav.c
+ if (bw+fmt->fmt.ima.dec_frameset_size > internal->buffer_size)
+ break;
+
+ int rc = read_ima_frameset(internal->rw, w, (Sint16*) (out_buf+bw));
+ rc = read_ima_frameset(internal->rw, w, (Sint16*) (out_buf+bw));
+
+ if (!rc)
+ {
@ -303,6 +311,7 @@ diff -r 719dade41745 decoders/wav.c
+static int read_fmt_ima(SDL_RWops *rw, fmt_t *fmt)
+{
+ Uint16 chan = fmt->wChannels;
+ Sint16 extraBytes;
+ int rc;
+
+ /* setup function pointers */
@ -311,7 +320,6 @@ diff -r 719dade41745 decoders/wav.c
+ fmt->rewind_sample = rewind_sample_fmt_ima;
+ fmt->seek_sample = seek_sample_fmt_ima;
+
+ Sint16 extraBytes;
+ BAIL_IF_MACRO(!read_le16(rw, &extraBytes), NULL, 0);
+ BAIL_IF_MACRO(!read_le16(rw, &fmt->fmt.ima.block_frames), NULL, 0);
+
@ -341,7 +349,7 @@ diff -r 719dade41745 decoders/wav.c
* Everything else... *
*****************************************************************************/
@@ -642,6 +950,13 @@
@@ -642,6 +958,13 @@
SNDDBG(("WAV: Appears to be ADPCM compressed audio.\n"));
return(read_fmt_adpcm(rw, fmt));