OBJS-$(CONFIG_ADPCM_4XM_DECODER) += adpcm.o
OBJS-$(CONFIG_ADPCM_ADX_DECODER) += adx.o
-OBJS-$(CONFIG_ADPCM_ADX_ENCODER) += adx.o
+OBJS-$(CONFIG_ADPCM_ADX_ENCODER) += adxenc.o
OBJS-$(CONFIG_ADPCM_CT_DECODER) += adpcm.o
OBJS-$(CONFIG_ADPCM_EA_DECODER) += adpcm.o
OBJS-$(CONFIG_ADPCM_EA_R1_DECODER) += adpcm.o
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include "avcodec.h"
+#include "adx.h"
/**
* @file adx.c
* adx2wav & wav2adx http://www.geocities.co.jp/Playtown/2004/
*/
-typedef struct {
- 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;
-} ADXContext;
-
-//#define BASEVOL 0x11e0
-#define BASEVOL 0x4000
-#define SCALE1 0x7298
-#define SCALE2 0x3350
-
/* 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;
-
- AV_WB16(adx, 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 = AV_RB16(in);
}
}
-#ifdef CONFIG_ENCODERS
-
-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" */
-#endif
- AV_WB32(buf+0x00,0x80000000|0x20);
- AV_WB32(buf+0x04,0x03120400|avctx->channels);
- AV_WB32(buf+0x08,avctx->sample_rate);
- AV_WB32(buf+0x0c,0); /* FIXME: set after */
- AV_WB32(buf+0x10,0x01040300);
- AV_WB32(buf+0x14,0x00000000);
- AV_WB32(buf+0x18,0x00000000);
- memcpy(buf+0x1c,"\0\0(c)CRI",8);
- return 0x20+4;
-}
-
-static int adx_encode_init(AVCodecContext *avctx)
-{
- if (avctx->channels > 2)
- return -1; /* only stereo or mono =) */
- avctx->frame_size = 32;
-
- avctx->coded_frame= avcodec_alloc_frame();
- avctx->coded_frame->key_frame= 1;
-
-// avctx->bit_rate = avctx->sample_rate*avctx->channels*18*8/32;
-
- av_log(avctx, AV_LOG_DEBUG, "adx encode init\n");
-
- return 0;
-}
-
-static int adx_encode_close(AVCodecContext *avctx)
-{
- av_freep(&avctx->coded_frame);
-
- return 0;
-}
-
-static int adx_encode_frame(AVCodecContext *avctx,
- uint8_t *frame, int buf_size, void *data)
-{
- 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;
-*/
-
-// 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
-
/* return data offset or 0 */
static int adx_decode_header(AVCodecContext *avctx,const unsigned char *buf,size_t bufsize)
{
return buf-buf0;
}
-#ifdef CONFIG_ENCODERS
-AVCodec adpcm_adx_encoder = {
- "adpcm_adx",
- CODEC_TYPE_AUDIO,
- CODEC_ID_ADPCM_ADX,
- sizeof(ADXContext),
- adx_encode_init,
- adx_encode_frame,
- adx_encode_close,
- NULL,
-};
-#endif //CONFIG_ENCODERS
-
AVCodec adpcm_adx_decoder = {
"adpcm_adx",
CODEC_TYPE_AUDIO,
--- /dev/null
+/*
+ * ADX ADPCM codecs
+ * Copyright (c) 2001,2003 BERO
+ *
+ * This file is part of FFmpeg.
+ *
+ * FFmpeg is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * FFmpeg is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with FFmpeg; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+/**
+ * @file adx.h
+ * SEGA CRI adx codecs.
+ *
+ * Reference documents:
+ * http://ku-www.ss.titech.ac.jp/~yatsushi/adx.html
+ * adx2wav & wav2adx http://www.geocities.co.jp/Playtown/2004/
+ */
+
+#ifndef FFMPEG_ADX_H
+#define FFMPEG_ADX_H
+
+typedef struct {
+ int s1,s2;
+} PREV;
+
+typedef struct {
+ PREV prev[2];
+ int header_parsed;
+ unsigned char dec_temp[18*2];
+ int in_temp;
+} ADXContext;
+
+#define BASEVOL 0x4000
+#define SCALE1 0x7298
+#define SCALE2 0x3350
+
+#endif /* FFMPEG_ADX_H */
--- /dev/null
+/*
+ * ADX ADPCM codecs
+ * Copyright (c) 2001,2003 BERO
+ *
+ * This file is part of FFmpeg.
+ *
+ * FFmpeg is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * FFmpeg is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with FFmpeg; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+#include "avcodec.h"
+#include "adx.h"
+
+/**
+ * @file adx.c
+ * SEGA CRI adx codecs.
+ *
+ * Reference documents:
+ * http://ku-www.ss.titech.ac.jp/~yatsushi/adx.html
+ * adx2wav & wav2adx http://www.geocities.co.jp/Playtown/2004/
+ */
+
+/* 18 bytes <-> 32 samples */
+
+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;
+
+ AV_WB16(adx, scale);
+
+ for(i=0;i<16;i++) {
+ adx[i+2] = ((data[i*2]/scale)<<4) | ((data[i*2+1]/scale)&0xf);
+ }
+}
+
+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" */
+#endif
+ AV_WB32(buf+0x00,0x80000000|0x20);
+ AV_WB32(buf+0x04,0x03120400|avctx->channels);
+ AV_WB32(buf+0x08,avctx->sample_rate);
+ AV_WB32(buf+0x0c,0); /* FIXME: set after */
+ AV_WB32(buf+0x10,0x01040300);
+ AV_WB32(buf+0x14,0x00000000);
+ AV_WB32(buf+0x18,0x00000000);
+ memcpy(buf+0x1c,"\0\0(c)CRI",8);
+ return 0x20+4;
+}
+
+static int adx_encode_init(AVCodecContext *avctx)
+{
+ if (avctx->channels > 2)
+ return -1; /* only stereo or mono =) */
+ avctx->frame_size = 32;
+
+ avctx->coded_frame= avcodec_alloc_frame();
+ avctx->coded_frame->key_frame= 1;
+
+// avctx->bit_rate = avctx->sample_rate*avctx->channels*18*8/32;
+
+ av_log(avctx, AV_LOG_DEBUG, "adx encode init\n");
+
+ return 0;
+}
+
+static int adx_encode_close(AVCodecContext *avctx)
+{
+ av_freep(&avctx->coded_frame);
+
+ return 0;
+}
+
+static int adx_encode_frame(AVCodecContext *avctx,
+ uint8_t *frame, int buf_size, void *data)
+{
+ 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;
+*/
+
+// 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;
+}
+
+AVCodec adpcm_adx_encoder = {
+ "adpcm_adx",
+ CODEC_TYPE_AUDIO,
+ CODEC_ID_ADPCM_ADX,
+ sizeof(ADXContext),
+ adx_encode_init,
+ adx_encode_frame,
+ adx_encode_close,
+ NULL,
+};
projects / platform / upstream / libav.git / commitdiff