From f19af812a32c1398d48c3550d11dbc6aafbb2bfc Mon Sep 17 00:00:00 2001 From: Mike Melanson Date: Wed, 15 Oct 2003 03:14:14 +0000 Subject: [PATCH] replace file to remove nasty DOS CRs and hard tabs Originally committed as revision 2384 to svn://svn.ffmpeg.org/ffmpeg/trunk --- libavcodec/adx.c | 551 +++++++++++++++++++++++------------------------ 1 file changed, 273 insertions(+), 278 deletions(-) diff --git a/libavcodec/adx.c b/libavcodec/adx.c index d6d6fdd281..4fdca49e83 100644 --- a/libavcodec/adx.c +++ b/libavcodec/adx.c @@ -28,163 +28,163 @@ */ 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 (maxd) 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 (maxd) 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 (bufsizesample_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;ipriv_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)