* MACE decoder
* Copyright (c) 2002 Laszlo Torok <torokl@alpha.dfmk.hu>
*
- * This library is free software; you can redistribute it and/or
+ * 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 of the License, or (at your option) any later version.
+ * version 2.1 of the License, or (at your option) any later version.
*
- * This library is distributed in the hope that it will be useful,
+ * 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 this library; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ * License along with FFmpeg; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+/**
+ * @file mace.c
+ * MACE decoder.
*/
+
#include "avcodec.h"
/*
* libavcodec api, context stuff, interlaced stereo out).
*/
-static const UINT16 MACEtab1[] = { 0xfff3, 0x0008, 0x004c, 0x00de, 0x00de, 0x004c, 0x0008, 0xfff3 };
+static const uint16_t MACEtab1[] = { 0xfff3, 0x0008, 0x004c, 0x00de, 0x00de, 0x004c, 0x0008, 0xfff3 };
-static const UINT16 MACEtab3[] = { 0xffee, 0x008c, 0x008c, 0xffee };
+static const uint16_t MACEtab3[] = { 0xffee, 0x008c, 0x008c, 0xffee };
-static const UINT16 MACEtab2[][8] = {
+static const uint16_t MACEtab2[][8] = {
{ 0x0025, 0x0074, 0x00CE, 0x014A, 0xFEB5, 0xFF31, 0xFF8B, 0xFFDA },
{ 0x0027, 0x0079, 0x00D8, 0x015A, 0xFEA5, 0xFF27, 0xFF86, 0xFFD8 },
{ 0x0029, 0x007F, 0x00E1, 0x0169, 0xFE96, 0xFF1E, 0xFF80, 0xFFD6 },
{ 0x25A7, 0x741F, 0x7FFF, 0x7FFF, 0x8000, 0x8000, 0x8BE0, 0xDA58 },
};
-static const UINT16 MACEtab4[][8] = {
+static const uint16_t MACEtab4[][8] = {
{ 0x0040, 0x00D8, 0xFF27, 0xFFBF, 0, 0, 0, 0 }, { 0x0043, 0x00E2, 0xFF1D, 0xFFBC, 0, 0, 0, 0 },
{ 0x0046, 0x00EC, 0xFF13, 0xFFB9, 0, 0, 0, 0 }, { 0x004A, 0x00F6, 0xFF09, 0xFFB5, 0, 0, 0, 0 },
{ 0x004D, 0x0101, 0xFEFE, 0xFFB2, 0, 0, 0, 0 }, { 0x0050, 0x010C, 0xFEF3, 0xFFAF, 0, 0, 0, 0 },
/* /// "chomp3()" */
static void chomp3(MACEContext *ctx,
- UINT8 val,
- const UINT16 tab1[],
- const UINT16 tab2[][8])
+ uint8_t val,
+ const uint16_t tab1[],
+ const uint16_t tab2[][8],
+ uint32_t numChannels)
{
short current;
else current+=ctx->lev;
ctx->lev=current-(current >> 3);
// *ctx->outPtr++=current >> 8;
- *ctx->outPtr++=current;
+ *ctx->outPtr=current;
+ ctx->outPtr+=numChannels;
if ( ( ctx->index += tab1[val]-(ctx->index>>5) ) < 0 ) ctx->index = 0;
}
/* \\\ */
/* /// "Exp1to3()" */
static void Exp1to3(MACEContext *ctx,
- UINT8 *inBuffer,
+ const uint8_t *inBuffer,
void *outBuffer,
- UINT32 cnt,
- UINT32 numChannels,
- UINT32 whichChannel)
+ uint32_t cnt,
+ uint32_t numChannels,
+ uint32_t whichChannel)
{
- UINT8 pkt;
+ uint8_t pkt;
/*
if (inState) {
while (cnt>0) {
pkt=inBuffer[0];
- chomp3(ctx, pkt & 7, MACEtab1, MACEtab2);
- chomp3(ctx,(pkt >> 3) & 3, MACEtab3, MACEtab4);
- chomp3(ctx, pkt >> 5 , MACEtab1, MACEtab2);
+ chomp3(ctx, pkt & 7, MACEtab1, MACEtab2, numChannels);
+ chomp3(ctx,(pkt >> 3) & 3, MACEtab3, MACEtab4, numChannels);
+ chomp3(ctx, pkt >> 5 , MACEtab1, MACEtab2, numChannels);
pkt=inBuffer[1];
- chomp3(ctx, pkt & 7, MACEtab1, MACEtab2);
- chomp3(ctx,(pkt >> 3) & 3, MACEtab3, MACEtab4);
- chomp3(ctx, pkt >> 5 , MACEtab1, MACEtab2);
+ chomp3(ctx, pkt & 7, MACEtab1, MACEtab2, numChannels);
+ chomp3(ctx,(pkt >> 3) & 3, MACEtab3, MACEtab4, numChannels);
+ chomp3(ctx, pkt >> 5 , MACEtab1, MACEtab2, numChannels);
inBuffer+=numChannels*2;
--cnt;
/* /// "chomp6()" */
static void chomp6(MACEContext *ctx,
- UINT8 val,
- const UINT16 tab1[],
- const UINT16 tab2[][8])
+ uint8_t val,
+ const uint16_t tab1[],
+ const uint16_t tab2[][8],
+ uint32_t numChannels)
{
short current;
// *ctx->outPtr++=(ctx->previous+ctx->prev2-((ctx->prev2-current) >> 2)) >> 8;
// *ctx->outPtr++=(ctx->previous+current+((ctx->prev2-current) >> 2)) >> 8;
- *ctx->outPtr++=(ctx->previous+ctx->prev2-((ctx->prev2-current) >> 2));
- *ctx->outPtr++=(ctx->previous+current+((ctx->prev2-current) >> 2));
-
+ *ctx->outPtr=(ctx->previous+ctx->prev2-((ctx->prev2-current) >> 2));
+ ctx->outPtr+=numChannels;
+ *ctx->outPtr=(ctx->previous+current+((ctx->prev2-current) >> 2));
+ ctx->outPtr+=numChannels;
ctx->prev2=ctx->previous;
ctx->previous=current;
/* /// "Exp1to6()" */
static void Exp1to6(MACEContext *ctx,
- UINT8 *inBuffer,
+ const uint8_t *inBuffer,
void *outBuffer,
- UINT32 cnt,
- UINT32 numChannels,
- UINT32 whichChannel)
+ uint32_t cnt,
+ uint32_t numChannels,
+ uint32_t whichChannel)
{
- UINT8 pkt;
+ uint8_t pkt;
/*
if (inState) {
while (cnt>0) {
pkt=*inBuffer;
- chomp6(ctx, pkt >> 5 , MACEtab1, MACEtab2);
- chomp6(ctx,(pkt >> 3) & 3, MACEtab3, MACEtab4);
- chomp6(ctx, pkt & 7, MACEtab1, MACEtab2);
+ chomp6(ctx, pkt >> 5 , MACEtab1, MACEtab2, numChannels);
+ chomp6(ctx,(pkt >> 3) & 3, MACEtab3, MACEtab4, numChannels);
+ chomp6(ctx, pkt & 7, MACEtab1, MACEtab2, numChannels);
inBuffer+=numChannels;
--cnt;
}
/* \\\ */
-static int mace_decode_init(AVCodecContext * avctx)
+static av_cold int mace_decode_init(AVCodecContext * avctx)
{
if (avctx->channels > 2)
return -1;
static int mace_decode_frame(AVCodecContext *avctx,
void *data, int *data_size,
- UINT8 *buf, int buf_size)
+ const uint8_t *buf, int buf_size)
{
short *samples;
MACEContext *c = avctx->priv_data;
samples = (short *)data;
switch (avctx->codec->id) {
case CODEC_ID_MACE3:
-puts("mace_decode_frame[3]()");
- Exp1to3(c, buf, samples, buf_size / 2, avctx->channels, 1);
+ dprintf(avctx, "mace_decode_frame[3]()");
+ Exp1to3(c, buf, samples, buf_size / 2 / avctx->channels, avctx->channels, 1);
if (avctx->channels == 2)
- Exp1to3(c, buf, samples+1, buf_size / 2, 2, 2);
+ Exp1to3(c, buf, samples+1, buf_size / 2 / 2, 2, 2);
*data_size = 2 * 3 * buf_size;
break;
case CODEC_ID_MACE6:
-puts("mace_decode_frame[6]()");
- Exp1to6(c, buf, samples, buf_size, avctx->channels, 1);
+ dprintf(avctx, "mace_decode_frame[6]()");
+ Exp1to6(c, buf, samples, buf_size / avctx->channels, avctx->channels, 1);
if (avctx->channels == 2)
- Exp1to6(c, buf, samples+1, buf_size, 2, 2);
+ Exp1to6(c, buf, samples+1, buf_size / 2, 2, 2);
*data_size = 2 * 6 * buf_size;
break;
default:
- *data_size = 0;
return -1;
}
return buf_size;
NULL,
NULL,
mace_decode_frame,
+ .long_name = NULL_IF_CONFIG_SMALL("MACE (Macintosh Audio Compression/Expansion) 3:1"),
};
AVCodec mace6_decoder = {
NULL,
NULL,
mace_decode_frame,
+ .long_name = NULL_IF_CONFIG_SMALL("MACE (Macintosh Audio Compression/Expansion) 6:1"),
};
projects / ffmpeg / blobdiff