Commit a85ab8ad authored by Justin Ruggles's avatar Justin Ruggles

adxenc: cosmetics: pretty-printing

parent 25edfc88
...@@ -39,40 +39,45 @@ static void adx_encode(ADXContext *c, uint8_t *adx, const int16_t *wav, ...@@ -39,40 +39,45 @@ static void adx_encode(ADXContext *c, uint8_t *adx, const int16_t *wav,
PutBitContext pb; PutBitContext pb;
int scale; int scale;
int i; int i;
int s0,s1,s2,d; int s0, s1, s2, d;
int max=0; int max = 0;
int min=0; int min = 0;
int data[32]; int data[32];
s1 = prev->s1; s1 = prev->s1;
s2 = prev->s2; s2 = prev->s2;
for(i=0;i<32;i++) { for (i = 0; i < 32; i++) {
s0 = wav[i]; s0 = wav[i];
d = ((s0 << COEFF_BITS) - c->coeff[0] * s1 - c->coeff[1] * s2) >> COEFF_BITS; d = ((s0 << COEFF_BITS) - c->coeff[0] * s1 - c->coeff[1] * s2) >> COEFF_BITS;
data[i]=d; data[i] = d;
if (max<d) max=d; if (max < d)
if (min>d) min=d; max = d;
if (min > d)
min = d;
s2 = s1; s2 = s1;
s1 = s0; s1 = s0;
} }
prev->s1 = s1; prev->s1 = s1;
prev->s2 = s2; prev->s2 = s2;
if (max==0 && min==0) { if (max == 0 && min == 0) {
memset(adx,0,18); memset(adx, 0, 18);
return; return;
} }
if (max/7>-min/8) scale = max/7; if (max / 7 > -min / 8)
else scale = -min/8; scale = max / 7;
else
scale = -min / 8;
if (scale==0) scale=1; if (scale == 0)
scale = 1;
AV_WB16(adx, scale); AV_WB16(adx, scale);
init_put_bits(&pb, adx + 2, 16); init_put_bits(&pb, adx + 2, 16);
for (i = 0; i < 32; i++) for (i = 0; i < 32; i++)
put_sbits(&pb, 4, av_clip(data[i]/scale, -8, 7)); put_sbits(&pb, 4, av_clip(data[i] / scale, -8, 7));
flush_put_bits(&pb); flush_put_bits(&pb);
} }
...@@ -80,16 +85,16 @@ static int adx_encode_header(AVCodecContext *avctx, uint8_t *buf, int bufsize) ...@@ -80,16 +85,16 @@ static int adx_encode_header(AVCodecContext *avctx, uint8_t *buf, int bufsize)
{ {
ADXContext *c = avctx->priv_data; ADXContext *c = avctx->priv_data;
AV_WB32(buf+0x00,0x80000000|0x20); AV_WB32(buf + 0x00, 0x80000000 | 0x20);
AV_WB32(buf+0x04,0x03120400|avctx->channels); AV_WB32(buf + 0x04, 0x03120400 | avctx->channels);
AV_WB32(buf+0x08,avctx->sample_rate); AV_WB32(buf + 0x08, avctx->sample_rate);
AV_WB32(buf+0x0c,0); AV_WB32(buf + 0x0c, 0);
AV_WB16(buf + 0x10, c->cutoff); AV_WB16(buf + 0x10, c->cutoff);
AV_WB32(buf + 0x12, 0x03000000); AV_WB32(buf + 0x12, 0x03000000);
AV_WB32(buf + 0x16, 0x00000000); AV_WB32(buf + 0x16, 0x00000000);
AV_WB32(buf + 0x1a, 0x00000000); AV_WB32(buf + 0x1a, 0x00000000);
memcpy (buf + 0x1e, "(c)CRI", 6); memcpy (buf + 0x1e, "(c)CRI", 6);
return 0x20+4; return 0x20 + 4;
} }
static av_cold int adx_encode_init(AVCodecContext *avctx) static av_cold int adx_encode_init(AVCodecContext *avctx)
...@@ -100,8 +105,8 @@ static av_cold int adx_encode_init(AVCodecContext *avctx) ...@@ -100,8 +105,8 @@ static av_cold int adx_encode_init(AVCodecContext *avctx)
return -1; return -1;
avctx->frame_size = 32; avctx->frame_size = 32;
avctx->coded_frame= avcodec_alloc_frame(); avctx->coded_frame = avcodec_alloc_frame();
avctx->coded_frame->key_frame= 1; avctx->coded_frame->key_frame = 1;
/* the cutoff can be adjusted, but this seems to work pretty well */ /* the cutoff can be adjusted, but this seems to work pretty well */
c->cutoff = 500; c->cutoff = 500;
...@@ -113,49 +118,48 @@ static av_cold int adx_encode_init(AVCodecContext *avctx) ...@@ -113,49 +118,48 @@ static av_cold int adx_encode_init(AVCodecContext *avctx)
static av_cold int adx_encode_close(AVCodecContext *avctx) static av_cold int adx_encode_close(AVCodecContext *avctx)
{ {
av_freep(&avctx->coded_frame); av_freep(&avctx->coded_frame);
return 0; return 0;
} }
static int adx_encode_frame(AVCodecContext *avctx, static int adx_encode_frame(AVCodecContext *avctx, uint8_t *frame,
uint8_t *frame, int buf_size, void *data) int buf_size, void *data)
{ {
ADXContext *c = avctx->priv_data; ADXContext *c = avctx->priv_data;
const int16_t *samples = data; const int16_t *samples = data;
uint8_t *dst = frame; uint8_t *dst = frame;
int rest = avctx->frame_size; int rest = avctx->frame_size;
if (!c->header_parsed) { if (!c->header_parsed) {
int hdrsize = adx_encode_header(avctx,dst,buf_size); int hdrsize = adx_encode_header(avctx, dst, buf_size);
dst+=hdrsize; dst += hdrsize;
c->header_parsed = 1; c->header_parsed = 1;
} }
if (avctx->channels==1) { if (avctx->channels == 1) {
while(rest>=32) { while (rest >= 32) {
adx_encode(c, dst, samples, c->prev); adx_encode(c, dst, samples, c->prev);
dst+=18; dst += 18;
samples+=32; samples += 32;
rest-=32; rest -= 32;
} }
} else { } else {
while(rest>=32*2) { while (rest >= 32*2) {
int16_t tmpbuf[32*2]; int16_t tmpbuf[32*2];
int i; int i;
for(i=0;i<32;i++) { for (i = 0; i < 32; i++) {
tmpbuf[i] = samples[i*2]; tmpbuf[i ] = samples[i*2 ];
tmpbuf[i+32] = samples[i*2+1]; tmpbuf[i+32] = samples[i*2+1];
} }
adx_encode(c, dst, tmpbuf, c->prev); adx_encode(c, dst, tmpbuf, c->prev );
adx_encode(c, dst + 18, tmpbuf + 32, c->prev + 1); adx_encode(c, dst + 18, tmpbuf + 32, c->prev + 1);
dst+=18*2; dst += 18*2;
samples+=32*2; samples += 32*2;
rest-=32*2; rest -= 32*2;
} }
} }
return dst-frame; return dst - frame;
} }
AVCodec ff_adpcm_adx_encoder = { AVCodec ff_adpcm_adx_encoder = {
...@@ -166,6 +170,7 @@ AVCodec ff_adpcm_adx_encoder = { ...@@ -166,6 +170,7 @@ AVCodec ff_adpcm_adx_encoder = {
.init = adx_encode_init, .init = adx_encode_init,
.encode = adx_encode_frame, .encode = adx_encode_frame,
.close = adx_encode_close, .close = adx_encode_close,
.sample_fmts = (const enum AVSampleFormat[]){AV_SAMPLE_FMT_S16,AV_SAMPLE_FMT_NONE}, .sample_fmts = (const enum AVSampleFormat[]) { AV_SAMPLE_FMT_S16,
.long_name = NULL_IF_CONFIG_SMALL("SEGA CRI ADX ADPCM"), AV_SAMPLE_FMT_NONE },
.long_name = NULL_IF_CONFIG_SMALL("SEGA CRI ADX ADPCM"),
}; };
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