replace file to remove nasty DOS CRs and hard tabs
authorMike Melanson <mike@multimedia.cx>
Wed, 15 Oct 2003 03:14:14 +0000 (03:14 +0000)
committerMike Melanson <mike@multimedia.cx>
Wed, 15 Oct 2003 03:14:14 +0000 (03:14 +0000)
Originally committed as revision 2384 to svn://svn.ffmpeg.org/ffmpeg/trunk

libavcodec/adx.c

index d6d6fdd..4fdca49 100644 (file)
  */
 
 typedef struct {
-       int s1,s2;
+    int s1,s2;
 } PREV;
 
 typedef struct {
-       PREV prev[2];
-       int header_parsed;
-       unsigned char dec_temp[18*2];
-       unsigned short enc_temp[32*2];
-       int in_temp;
+    PREV prev[2];
+    int header_parsed;
+    unsigned char dec_temp[18*2];
+    unsigned short enc_temp[32*2];
+    int in_temp;
 } ADXContext;
 
-//#define      BASEVOL 0x11e0
-#define        BASEVOL 0x4000
-#define SCALE1 0x7298
-#define        SCALE2  0x3350
+//#define    BASEVOL    0x11e0
+#define    BASEVOL   0x4000
+#define    SCALE1    0x7298
+#define    SCALE2    0x3350
 
-#define        CLIP(s) if (s>32767) s=32767; else if (s<-32768) s=-32768
+#define    CLIP(s)    if (s>32767) s=32767; else if (s<-32768) s=-32768
 
-/* 18byte <-> 32 samples */
+/* 18 bytes <-> 32 samples */
 
 #ifdef CONFIG_ENCODERS
 static void adx_encode(unsigned char *adx,const short *wav,PREV *prev)
 {
-       int scale;
-       int i;
-       int s0,s1,s2,d;
-       int max=0;
-       int min=0;
-       int data[32];
-
-       s1 = prev->s1;
-       s2 = prev->s2;
-       for(i=0;i<32;i++) {
-               s0 = wav[i];
-               d = ((s0<<14) - SCALE1*s1 + SCALE2*s2)/BASEVOL;
-               data[i]=d;
-               if (max<d) max=d;
-               if (min>d) min=d;
-               s2 = s1;
-               s1 = s0;
-       }
-       prev->s1 = s1;
-       prev->s2 = s2;
-
-       /* -8..+7 */
-
-       if (max==0 && min==0) {
-               memset(adx,0,18);
-               return;
-       }
-
-       if (max/7>-min/8) scale = max/7;
-       else scale = -min/8;
-
-       if (scale==0) scale=1;
-
-       adx[0] = scale>>8;
-       adx[1] = scale;
-
-       for(i=0;i<16;i++) {
-               adx[i+2] = ((data[i*2]/scale)<<4) | ((data[i*2+1]/scale)&0xf);
-       }
+    int scale;
+    int i;
+    int s0,s1,s2,d;
+    int max=0;
+    int min=0;
+    int data[32];
+
+    s1 = prev->s1;
+    s2 = prev->s2;
+    for(i=0;i<32;i++) {
+        s0 = wav[i];
+        d = ((s0<<14) - SCALE1*s1 + SCALE2*s2)/BASEVOL;
+        data[i]=d;
+        if (max<d) max=d;
+        if (min>d) min=d;
+        s2 = s1;
+        s1 = s0;
+    }
+    prev->s1 = s1;
+    prev->s2 = s2;
+
+    /* -8..+7 */
+
+    if (max==0 && min==0) {
+        memset(adx,0,18);
+        return;
+    }
+
+    if (max/7>-min/8) scale = max/7;
+    else scale = -min/8;
+
+    if (scale==0) scale=1;
+
+    adx[0] = scale>>8;
+    adx[1] = scale;
+
+    for(i=0;i<16;i++) {
+        adx[i+2] = ((data[i*2]/scale)<<4) | ((data[i*2+1]/scale)&0xf);
+    }
 }
 #endif //CONFIG_ENCODERS
 
 static void adx_decode(short *out,const unsigned char *in,PREV *prev)
 {
-       int scale = ((in[0]<<8)|(in[1]));
-       int i;
-       int s0,s1,s2,d;
-
-//     printf("%x ",scale);
-
-       in+=2;
-       s1 = prev->s1;
-       s2 = prev->s2;
-       for(i=0;i<16;i++) {
-               d = in[i];
-               // d>>=4; if (d&8) d-=16;
-               d = ((signed char)d >> 4);
-               s0 = (BASEVOL*d*scale + SCALE1*s1 - SCALE2*s2)>>14;
-               CLIP(s0);
-               *out++=s0;
-               s2 = s1;
-               s1 = s0;
-
-               d = in[i];
-               //d&=15; if (d&8) d-=16;
-               d = ((signed char)(d<<4) >> 4);
-               s0 = (BASEVOL*d*scale + SCALE1*s1 - SCALE2*s2)>>14;
-               CLIP(s0);
-               *out++=s0;
-               s2 = s1;
-               s1 = s0;
-       }
-       prev->s1 = s1;
-       prev->s2 = s2;
+    int scale = ((in[0]<<8)|(in[1]));
+    int i;
+    int s0,s1,s2,d;
+
+//    printf("%x ",scale);
+
+    in+=2;
+    s1 = prev->s1;
+    s2 = prev->s2;
+    for(i=0;i<16;i++) {
+        d = in[i];
+        // d>>=4; if (d&8) d-=16;
+        d = ((signed char)d >> 4);
+        s0 = (BASEVOL*d*scale + SCALE1*s1 - SCALE2*s2)>>14;
+        CLIP(s0);
+        *out++=s0;
+        s2 = s1;
+        s1 = s0;
+
+        d = in[i];
+        //d&=15; if (d&8) d-=16;
+        d = ((signed char)(d<<4) >> 4);
+        s0 = (BASEVOL*d*scale + SCALE1*s1 - SCALE2*s2)>>14;
+        CLIP(s0);
+        *out++=s0;
+        s2 = s1;
+        s1 = s0;
+    }
+    prev->s1 = s1;
+    prev->s2 = s2;
 
 }
 
 static void adx_decode_stereo(short *out,const unsigned char *in,PREV *prev)
 {
-       short tmp[32*2];
-       int i;
-
-       adx_decode(tmp   ,in   ,prev);
-       adx_decode(tmp+32,in+18,prev+1);
-       for(i=0;i<32;i++) {
-               out[i*2]   = tmp[i];
-               out[i*2+1] = tmp[i+32];
-       }
+    short tmp[32*2];
+    int i;
+
+    adx_decode(tmp   ,in   ,prev);
+    adx_decode(tmp+32,in+18,prev+1);
+    for(i=0;i<32;i++) {
+        out[i*2]   = tmp[i];
+        out[i*2+1] = tmp[i+32];
+    }
 }
 
 #ifdef CONFIG_ENCODERS
 
 static void write_long(unsigned char *p,uint32_t v)
 {
-       p[0] = v>>24;
-       p[1] = v>>16;
-       p[2] = v>>8;
-       p[3] = v;
+    p[0] = v>>24;
+    p[1] = v>>16;
+    p[2] = v>>8;
+    p[3] = v;
 }
 
 static int adx_encode_header(AVCodecContext *avctx,unsigned char *buf,size_t bufsize)
 {
 #if 0
-       struct {
-               uint32_t offset; /* 0x80000000 + sample start - 4 */
-               unsigned char unknown1[3]; /* 03 12 04 */
-               unsigned char channel; /* 1 or 2 */
-               uint32_t freq;
-               uint32_t size;
-               uint32_t unknown2; /* 01 f4 03 00 */
-               uint32_t unknown3; /* 00 00 00 00 */
-               uint32_t unknown4; /* 00 00 00 00 */
-
-       /* if loop
-               unknown3 00 15 00 01
-               unknown4 00 00 00 01
-               long loop_start_sample;
-               long loop_start_byte;
-               long loop_end_sample;
-               long loop_end_byte;
-               long 
-       */
-       } adxhdr; /* big endian */
-       /* offset-6 "(c)CRI" */
+    struct {
+        uint32_t offset; /* 0x80000000 + sample start - 4 */
+        unsigned char unknown1[3]; /* 03 12 04 */
+        unsigned char channel; /* 1 or 2 */
+        uint32_t freq;
+        uint32_t size;
+        uint32_t unknown2; /* 01 f4 03 00 */
+        uint32_t unknown3; /* 00 00 00 00 */
+        uint32_t unknown4; /* 00 00 00 00 */
+
+    /* if loop
+        unknown3 00 15 00 01
+        unknown4 00 00 00 01
+        long loop_start_sample;
+        long loop_start_byte;
+        long loop_end_sample;
+        long loop_end_byte;
+        long 
+    */
+    } adxhdr; /* big endian */
+    /* offset-6 "(c)CRI" */
 #endif
-       write_long(buf+0x00,0x80000000|0x20);
-       write_long(buf+0x04,0x03120400|avctx->channels);
-       write_long(buf+0x08,avctx->sample_rate);
-       write_long(buf+0x0c,0); /* FIXME: set after */
-       write_long(buf+0x10,0x01040300);
-       write_long(buf+0x14,0x00000000);
-       write_long(buf+0x18,0x00000000);
-       memcpy(buf+0x1c,"\0\0(c)CRI",8);
-       return 0x20+4;
+    write_long(buf+0x00,0x80000000|0x20);
+    write_long(buf+0x04,0x03120400|avctx->channels);
+    write_long(buf+0x08,avctx->sample_rate);
+    write_long(buf+0x0c,0); /* FIXME: set after */
+    write_long(buf+0x10,0x01040300);
+    write_long(buf+0x14,0x00000000);
+    write_long(buf+0x18,0x00000000);
+    memcpy(buf+0x1c,"\0\0(c)CRI",8);
+    return 0x20+4;
 }
 
 static int adx_decode_init(AVCodecContext *avctx);
@@ -213,200 +213,195 @@ static int adx_encode_close(AVCodecContext *avctx)
 }
 
 static int adx_encode_frame(AVCodecContext *avctx,
-                           unsigned char *frame, int buf_size, const void *data)
+                unsigned char *frame, int buf_size, const void *data)
 {
-       ADXContext *c = avctx->priv_data;
-       const short *samples = data;
-       unsigned char *dst = frame;
-       int rest = avctx->frame_size;
+    ADXContext *c = avctx->priv_data;
+    const short *samples = data;
+    unsigned char *dst = frame;
+    int rest = avctx->frame_size;
 
 /*
-       input data size =
-       ffmpeg.c: do_audio_out()
-       frame_bytes = enc->frame_size * 2 * enc->channels;
+    input data size =
+    ffmpeg.c: do_audio_out()
+    frame_bytes = enc->frame_size * 2 * enc->channels;
 */
 
-//     printf("sz=%d ",buf_size); fflush(stdout);
-       if (!c->header_parsed) {
-               int hdrsize = adx_encode_header(avctx,dst,buf_size);
-               dst+=hdrsize;
-               c->header_parsed = 1;
-       }
-
-       if (avctx->channels==1) {
-               while(rest>=32) {
-                       adx_encode(dst,samples,c->prev);
-                       dst+=18;
-                       samples+=32;
-                       rest-=32;
-               }
-       } else {
-               while(rest>=32*2) {
-                       short tmpbuf[32*2];
-                       int i;
-
-                       for(i=0;i<32;i++) {
-                               tmpbuf[i] = samples[i*2];
-                               tmpbuf[i+32] = samples[i*2+1];
-                       }
-
-                       adx_encode(dst,tmpbuf,c->prev);
-                       adx_encode(dst+18,tmpbuf+32,c->prev+1);
-                       dst+=18*2;
-                       samples+=32*2;
-                       rest-=32*2;
-               }
-       }
-       return dst-frame;
+//    printf("sz=%d ",buf_size); fflush(stdout);
+    if (!c->header_parsed) {
+        int hdrsize = adx_encode_header(avctx,dst,buf_size);
+        dst+=hdrsize;
+        c->header_parsed = 1;
+    }
+
+    if (avctx->channels==1) {
+        while(rest>=32) {
+            adx_encode(dst,samples,c->prev);
+            dst+=18;
+            samples+=32;
+            rest-=32;
+        }
+    } else {
+        while(rest>=32*2) {
+            short tmpbuf[32*2];
+            int i;
+
+            for(i=0;i<32;i++) {
+                tmpbuf[i] = samples[i*2];
+                tmpbuf[i+32] = samples[i*2+1];
+            }
+
+            adx_encode(dst,tmpbuf,c->prev);
+            adx_encode(dst+18,tmpbuf+32,c->prev+1);
+            dst+=18*2;
+            samples+=32*2;
+            rest-=32*2;
+        }
+    }
+    return dst-frame;
 }
 
 #endif //CONFIG_ENCODERS
 
 static uint32_t read_long(const unsigned char *p)
 {
-       return (p[0]<<24)|(p[1]<<16)|(p[2]<<8)|p[3];
+    return (p[0]<<24)|(p[1]<<16)|(p[2]<<8)|p[3];
 }
 
 int is_adx(const unsigned char *buf,size_t bufsize)
 {
-       int     offset;
+    int    offset;
 
-       if (buf[0]!=0x80) return 0;
-       offset = (read_long(buf)^0x80000000)+4;
-       if (bufsize<offset || memcmp(buf+offset-6,"(c)CRI",6)) return 0;
-       return offset;
+    if (buf[0]!=0x80) return 0;
+    offset = (read_long(buf)^0x80000000)+4;
+    if (bufsize<offset || memcmp(buf+offset-6,"(c)CRI",6)) return 0;
+    return offset;
 }
 
 /* return data offset or 6 */
 static int adx_decode_header(AVCodecContext *avctx,const unsigned char *buf,size_t bufsize)
 {
-       int offset;
-       int channels,freq,size;
+    int offset;
+    int channels,freq,size;
 
-       offset = is_adx(buf,bufsize);
-       if (offset==0) return 0;
+    offset = is_adx(buf,bufsize);
+    if (offset==0) return 0;
 
-       channels = buf[7];
-       freq = read_long(buf+8);
-       size = read_long(buf+12);
+    channels = buf[7];
+    freq = read_long(buf+8);
+    size = read_long(buf+12);
 
-//     printf("freq=%d ch=%d\n",freq,channels);
+//    printf("freq=%d ch=%d\n",freq,channels);
 
-       avctx->sample_rate = freq;
-       avctx->channels = channels;
-       avctx->bit_rate = freq*channels*18*8/32;
-//     avctx->frame_size = 18*channels;
+    avctx->sample_rate = freq;
+    avctx->channels = channels;
+    avctx->bit_rate = freq*channels*18*8/32;
+//    avctx->frame_size = 18*channels;
 
-       return offset;
+    return offset;
 }
 
 static int adx_decode_init(AVCodecContext * avctx)
 {
-       ADXContext *c = avctx->priv_data;
-
-//     printf("adx_decode_init\n"); fflush(stdout);
-       c->prev[0].s1 = 0;
-       c->prev[0].s2 = 0;
-       c->prev[1].s1 = 0;
-       c->prev[1].s2 = 0;
-       c->header_parsed = 0;
-       c->in_temp = 0;
-       return 0;
+    ADXContext *c = avctx->priv_data;
+
+//    printf("adx_decode_init\n"); fflush(stdout);
+    c->prev[0].s1 = 0;
+    c->prev[0].s2 = 0;
+    c->prev[1].s1 = 0;
+    c->prev[1].s2 = 0;
+    c->header_parsed = 0;
+    c->in_temp = 0;
+    return 0;
 }
 
 static void dump(unsigned char *buf,size_t len)
 {
-       int i;
-       for(i=0;i<len;i++) {
-               if ((i&15)==0) printf("%04x  ",i);
-               printf("%02x ",buf[i]);
-               if ((i&15)==15) printf("\n");
-       }
-       printf("\n");
+    int i;
+    for(i=0;i<len;i++) {
+        if ((i&15)==0) printf("%04x  ",i);
+        printf("%02x ",buf[i]);
+        if ((i&15)==15) printf("\n");
+    }
+    printf("\n");
 }
 static int adx_decode_frame(AVCodecContext *avctx,
-                           void *data, int *data_size,
-                           const uint8_t *buf0, int buf_size)
+                void *data, int *data_size,
+                const uint8_t *buf0, int buf_size)
 {
-       ADXContext *c = avctx->priv_data;
-       short *samples = data;
-       const uint8_t *buf = buf0;
-       int rest = buf_size;
-
-       if (!c->header_parsed) {
-               int hdrsize = adx_decode_header(avctx,buf,rest);
-               if (hdrsize==0) return -1;
-               c->header_parsed = 1;
-               buf  += hdrsize;
-               rest -= hdrsize;
-       }
-
-       if (c->in_temp) {
-               int copysize = 18*avctx->channels - c->in_temp;
-               memcpy(c->dec_temp+c->in_temp,buf,copysize);
-               rest -= copysize;
-               buf  += copysize;
-               if (avctx->channels==1) {
-                       adx_decode(samples,c->dec_temp,c->prev);
-                       samples += 32;
-               } else {
-                       adx_decode_stereo(samples,c->dec_temp,c->prev);
-                       samples += 32*2;
-               }
-       }
-       //
-       if (avctx->channels==1) {
-               while(rest>=18) {
-                       adx_decode(samples,buf,c->prev);
-                       rest-=18;
-                       buf+=18;
-                       samples+=32;
-               }
-       } else {
-               while(rest>=18*2) {
-                       adx_decode_stereo(samples,buf,c->prev);
-                       rest-=18*2;
-                       buf+=18*2;
-                       samples+=32*2;
-               }
-       }
-       //
-       c->in_temp = rest;
-       if (rest) {
-               memcpy(c->dec_temp,buf,rest);
-               buf+=rest;
-       }
-       *data_size = (uint8_t*)samples - (uint8_t*)data;
-//     printf("%d:%d ",buf-buf0,*data_size); fflush(stdout);
-       return buf-buf0;
+    ADXContext *c = avctx->priv_data;
+    short *samples = data;
+    const uint8_t *buf = buf0;
+    int rest = buf_size;
+
+    if (!c->header_parsed) {
+        int hdrsize = adx_decode_header(avctx,buf,rest);
+        if (hdrsize==0) return -1;
+        c->header_parsed = 1;
+        buf  += hdrsize;
+        rest -= hdrsize;
+    }
+
+    if (c->in_temp) {
+        int copysize = 18*avctx->channels - c->in_temp;
+        memcpy(c->dec_temp+c->in_temp,buf,copysize);
+        rest -= copysize;
+        buf  += copysize;
+        if (avctx->channels==1) {
+            adx_decode(samples,c->dec_temp,c->prev);
+            samples += 32;
+        } else {
+            adx_decode_stereo(samples,c->dec_temp,c->prev);
+            samples += 32*2;
+        }
+    }
+    //
+    if (avctx->channels==1) {
+        while(rest>=18) {
+            adx_decode(samples,buf,c->prev);
+            rest-=18;
+            buf+=18;
+            samples+=32;
+        }
+    } else {
+        while(rest>=18*2) {
+            adx_decode_stereo(samples,buf,c->prev);
+            rest-=18*2;
+            buf+=18*2;
+            samples+=32*2;
+        }
+    }
+    //
+    c->in_temp = rest;
+    if (rest) {
+        memcpy(c->dec_temp,buf,rest);
+        buf+=rest;
+    }
+    *data_size = (uint8_t*)samples - (uint8_t*)data;
+//    printf("%d:%d ",buf-buf0,*data_size); fflush(stdout);
+    return buf-buf0;
 }
 
-#define DEFINE_ENCODER(id, name, context)                \
-AVCodec name ## _encoder = {                    \
-    #name,                                      \
-    CODEC_TYPE_AUDIO,                           \
-    id,                                         \
-    sizeof(context),                       \
-    name ## _encode_init,                       \
-    name ## _encode_frame,                      \
-    name ## _encode_close,                      \
-    NULL,                                       \
+#ifdef CONFIG_ENCODERS
+AVCodec adx_adpcm_encoder = {
+    "adx_adpcm",
+    CODEC_TYPE_AUDIO,
+    CODEC_ID_ADPCM_ADX,
+    sizeof(ADXContext),
+    adx_encode_init,
+    adx_encode_frame,
+    adx_encode_close,
+    NULL,
 };
+#endif //CONFIG_ENCODERS
 
-#define DEFINE_DECODER(id, name, context)                \
-AVCodec name ## _decoder = {                    \
-    #name,                                      \
-    CODEC_TYPE_AUDIO,                           \
-    id,                                         \
-    sizeof(context),                       \
-    name ## _decode_init,                       \
-    NULL,                                       \
-    NULL,                                       \
-    name ## _decode_frame,                      \
+AVCodec adx_adpcm_decoder = {
+    "adx_adpcm",
+    CODEC_TYPE_AUDIO,
+    CODEC_ID_ADPCM_ADX,
+    sizeof(ADXContext),
+    adx_decode_init,
+    NULL,
+    NULL,
+    adx_decode_frame,
 };
 
-#ifdef CONFIG_ENCODERS
-DEFINE_ENCODER(CODEC_ID_ADPCM_ADX,adx,ADXContext)
-#endif //CONFIG_ENCODERS
-
-DEFINE_DECODER(CODEC_ID_ADPCM_ADX,adx,ADXContext)