Commit 4e114829 authored by Mike Melanson's avatar Mike Melanson

complete American Laser Games MM playback system, courtesy of Peter Ross

(suxen_drol at hotmail dot com)

Originally committed as revision 4999 to svn://svn.ffmpeg.org/ffmpeg/trunk
parent 6df84c3a
......@@ -30,6 +30,7 @@ Loren Merritt
Jeff Muizelaar
Michael Niedermayer
François Revol
Peter Ross
Måns Rullgård
Roman Shaposhnik
Dieter Shirley
......
......@@ -36,6 +36,7 @@ version <next>
- AIFF/AIFF-C audio format, encoding and decoding
- ADTS AAC file reading and writing
- Creative VOC file reading and writing
- American Laser Games multimedia (*.mm) playback system
version 0.4.9-pre1:
......
......@@ -698,6 +698,8 @@ library:
@item Nullsoft Video (NSV) format @tab @tab X
@item ADTS AAC audio @tab X @tab X
@item Creative VOC @tab X @tab X @tab Created for the Sound Blaster Pro.
@item American Laser Games MM @tab @tab X
@tab Multimedia format used in games like Mad Dog McCree
@end multitable
@code{X} means that encoding (resp. decoding) is supported.
......@@ -788,6 +790,7 @@ following image formats are supported:
@item Autodesk Animator Studio Codec @tab @tab X @tab fourcc: AASC
@item Fraps FPS1 @tab @tab X @tab
@item CamStudio @tab @tab X @tab fourcc: CSCD
@item American Laser Games Video @tab @tab X @tab Used in games like Mad Dog McCree
@end multitable
@code{X} means that encoding (resp. decoding) is supported.
......
......@@ -218,6 +218,9 @@ endif
ifeq ($(CONFIG_BMP_DECODER),yes)
OBJS+= bmp.o
endif
ifeq ($(CONFIG_MMVIDEO_DECODER),yes)
OBJS+= mmvideo.o
endif
AMROBJS=
ifeq ($(AMR_NB),yes)
......
......@@ -539,6 +539,10 @@ void avcodec_register_all(void)
register_avcodec(&bmp_decoder);
#endif
#if CONFIG_MMVIDEO_DECODER
register_avcodec(&mmvideo_decoder);
#endif //CONFIG_MMVIDEO_DECODER
/* pcm codecs */
#if defined (CONFIG_ENCODERS) && defined (CONFIG_DECODERS)
#define PCM_CODEC(id, name) \
......
......@@ -115,6 +115,7 @@ enum CodecID {
CODEC_ID_TRUEMOTION2,
CODEC_ID_BMP,
CODEC_ID_CSCD,
CODEC_ID_MMVIDEO,
/* various pcm "codecs" */
CODEC_ID_PCM_S16LE= 0x10000,
......@@ -2226,6 +2227,7 @@ extern AVCodec fraps_decoder;
extern AVCodec libgsm_encoder;
extern AVCodec libgsm_decoder;
extern AVCodec bmp_decoder;
extern AVCodec mmvideo_decoder;
/* pcm codecs */
#define PCM_CODEC(id, name) \
......
/*
* American Laser Games MM Video Decoder
* Copyright (c) 2006 Peter Ross
*
* This library 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.
*
* This library 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
*/
/**
* @file mm.c
* American Laser Games MM Video Decoder
* by Peter Ross (suxen_drol at hotmail dot com)
*
* The MM format was used by IBM-PC ports of ALG's "arcade shooter" games,
* including Mad Dog McCree and Crime Patrol.
*
* Technical details here:
* http://wiki.multimedia.cx/index.php?title=American_Laser_Games_MM
*/
#include "avcodec.h"
#define MM_PREAMBLE_SIZE 6
#define MM_TYPE_INTER 0x5
#define MM_TYPE_INTRA 0x8
#define MM_TYPE_INTRA_HH 0xc
#define MM_TYPE_INTER_HH 0xd
#define MM_TYPE_INTRA_HHV 0xe
#define MM_TYPE_INTER_HHV 0xf
typedef struct MmContext {
AVCodecContext *avctx;
AVFrame frame;
} MmContext;
static int mm_decode_init(AVCodecContext *avctx)
{
MmContext *s = avctx->priv_data;
s->avctx = avctx;
if (s->avctx->palctrl == NULL) {
av_log(avctx, AV_LOG_ERROR, "mmvideo: palette expected.\n");
return -1;
}
avctx->pix_fmt = PIX_FMT_PAL8;
avctx->has_b_frames = 0;
if (avcodec_check_dimensions(avctx, avctx->width, avctx->height))
return -1;
s->frame.reference = 1;
if (avctx->get_buffer(avctx, &s->frame)) {
av_log(s->avctx, AV_LOG_ERROR, "mmvideo: get_buffer() failed\n");
return -1;
}
return 0;
}
static void mm_decode_intra(MmContext * s, int half_horiz, int half_vert, const uint8_t *buf, int buf_size)
{
int i, x, y;
i=0; x=0; y=0;
while(i<buf_size) {
int run_length, color;
if (buf[i] & 0x80) {
run_length = 1;
color = buf[i];
i++;
}else{
run_length = (buf[i] & 0x7f) + 2;
color = buf[i+1];
i+=2;
}
if (half_horiz)
run_length *=2;
if (color) {
memset(s->frame.data[0] + y*s->frame.linesize[0] + x, color, run_length);
if (half_vert)
memset(s->frame.data[0] + (y+1)*s->frame.linesize[0] + x, color, run_length);
}
x+= run_length;
if (x >= s->avctx->width) {
x=0;
y += half_vert ? 2 : 1;
}
}
}
static void mm_decode_inter(MmContext * s, int half_horiz, int half_vert, const uint8_t *buf, int buf_size)
{
const int data_ptr = 2 + LE_16(&buf[0]);
int d, r, y;
d = data_ptr; r = 2; y = 0;
while(r < data_ptr) {
int i, j;
int length = buf[r] & 0x7f;
int x = buf[r+1] + ((buf[r] & 0x80) << 1);
r += 2;
if (length==0) {
y += x;
continue;
}
for(i=0; i<length; i++) {
for(j=0; j<8; j++) {
int replace = (buf[r+i] >> (7-j)) & 1;
if (replace) {
int color = buf[d];
s->frame.data[0][y*s->frame.linesize[0] + x] = color;
if (half_horiz)
s->frame.data[0][y*s->frame.linesize[0] + x + 1] = color;
if (half_vert) {
s->frame.data[0][(y+1)*s->frame.linesize[0] + x] = color;
if (half_horiz)
s->frame.data[0][(y+1)*s->frame.linesize[0] + x + 1] = color;
}
d++;
}
x += half_horiz ? 2 : 1;
}
}
r += length;
y += half_vert ? 2 : 1;
}
}
static int mm_decode_frame(AVCodecContext *avctx,
void *data, int *data_size,
uint8_t *buf, int buf_size)
{
MmContext *s = avctx->priv_data;
AVPaletteControl *palette_control = avctx->palctrl;
int type;
if (palette_control->palette_changed) {
memcpy(s->frame.data[1], palette_control->palette, AVPALETTE_SIZE);
palette_control->palette_changed = 0;
}
type = LE_16(&buf[0]);
buf += MM_PREAMBLE_SIZE;
buf_size -= MM_PREAMBLE_SIZE;
switch(type) {
case MM_TYPE_INTRA : mm_decode_intra(s, 0, 0, buf, buf_size); break;
case MM_TYPE_INTRA_HH : mm_decode_intra(s, 1, 0, buf, buf_size); break;
case MM_TYPE_INTRA_HHV : mm_decode_intra(s, 1, 1, buf, buf_size); break;
case MM_TYPE_INTER : mm_decode_inter(s, 0, 0, buf, buf_size); break;
case MM_TYPE_INTER_HH : mm_decode_inter(s, 1, 0, buf, buf_size); break;
case MM_TYPE_INTER_HHV : mm_decode_inter(s, 1, 1, buf, buf_size); break;
default :
return -1;
}
*data_size = sizeof(AVFrame);
*(AVFrame*)data = s->frame;
return buf_size;
}
static int mm_decode_end(AVCodecContext *avctx)
{
MmContext *s = avctx->priv_data;
if(s->frame.data[0])
avctx->release_buffer(avctx, &s->frame);
return 0;
}
AVCodec mmvideo_decoder = {
"mmvideo",
CODEC_TYPE_VIDEO,
CODEC_ID_MMVIDEO,
sizeof(MmContext),
mm_decode_init,
NULL,
mm_decode_end,
mm_decode_frame,
CODEC_CAP_DR1,
};
......@@ -23,7 +23,7 @@ OBJS+=mpeg.o mpegts.o mpegtsenc.o ffm.o crc.o img.o img2.o raw.o rm.o \
nut.o wc3movie.o mp3.o westwood.o segafilm.o idcin.o flic.o \
sierravmd.o matroska.o sol.o electronicarts.o nsvdec.o asf.o \
ogg2.o oggparsevorbis.o oggparsetheora.o oggparseflac.o daud.o aiff.o \
voc.o tta.o
voc.o tta.o mm.o
# muxers
ifeq ($(CONFIG_MUXERS),yes)
......
......@@ -79,6 +79,7 @@ void av_register_all(void)
idcin_init();
flic_init();
vmd_init();
mm_init();
#if defined(AMR_NB) || defined(AMR_NB_FIXED) || defined(AMR_WB)
amr_init();
......
......@@ -561,6 +561,9 @@ int tta_init(void);
/* adts.c */
int ff_adts_init(void);
/* mm.c */
int mm_init(void);
#include "rtp.h"
#include "rtsp.h"
......
/*
* American Laser Games MM Format Demuxer
* Copyright (c) 2006 Peter Ross
*
* This library 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.
*
* This library 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
*/
/**
* @file mm.c
* American Laser Games MM Format Demuxer
* by Peter Ross (suxen_drol at hotmail dot com)
*
* The MM format was used by IBM-PC ports of ALG's "arcade shooter" games,
* including Mad Dog McCree and Crime Patrol.
*
* Technical details here:
* http://wiki.multimedia.cx/index.php?title=American_Laser_Games_MM
*/
#include "avformat.h"
#define MM_PREAMBLE_SIZE 6
#define MM_TYPE_HEADER 0x0
#define MM_TYPE_INTER 0x5
#define MM_TYPE_INTRA 0x8
#define MM_TYPE_INTRA_HH 0xc
#define MM_TYPE_INTER_HH 0xd
#define MM_TYPE_INTRA_HHV 0xe
#define MM_TYPE_INTER_HHV 0xf
#define MM_TYPE_AUDIO 0x15
#define MM_TYPE_PALETTE 0x31
#define MM_HEADER_LEN_V 0x16 /* video only */
#define MM_HEADER_LEN_AV 0x18 /* video + audio */
#define MM_PALETTE_COUNT 128
#define MM_PALETTE_SIZE (MM_PALETTE_COUNT*3)
typedef struct {
AVPaletteControl palette_control;
unsigned int audio_pts, video_pts;
} MmDemuxContext;
static int mm_probe(AVProbeData *p)
{
/* the first chunk is always the header */
if (p->buf_size < MM_PREAMBLE_SIZE)
return 0;
if (LE_16(&p->buf[0]) != MM_TYPE_HEADER)
return 0;
if (LE_32(&p->buf[2]) != MM_HEADER_LEN_V && LE_32(&p->buf[2]) != MM_HEADER_LEN_AV)
return 0;
/* only return half certainty since this check is a bit sketchy */
return AVPROBE_SCORE_MAX / 2;
}
static int mm_read_header(AVFormatContext *s,
AVFormatParameters *ap)
{
MmDemuxContext *mm = (MmDemuxContext *)s->priv_data;
ByteIOContext *pb = &s->pb;
AVStream *st;
unsigned int type, length;
unsigned int frame_rate, width, height;
type = get_le16(pb);
length = get_le32(pb);
if (type != MM_TYPE_HEADER)
return AVERROR_INVALIDDATA;
/* read header */
get_le16(pb); /* total number of chunks */
frame_rate = get_le16(pb);
get_le16(pb); /* ibm-pc video bios mode */
width = get_le16(pb);
height = get_le16(pb);
url_fseek(pb, length - 10, SEEK_CUR); /* unknown data */
/* video stream */
st = av_new_stream(s, 0);
if (!st)
return AVERROR_NOMEM;
st->codec->codec_type = CODEC_TYPE_VIDEO;
st->codec->codec_id = CODEC_ID_MMVIDEO;
st->codec->codec_tag = 0; /* no fourcc */
st->codec->width = width;
st->codec->height = height;
st->codec->palctrl = &mm->palette_control;
av_set_pts_info(st, 64, 1, frame_rate);
/* audio stream */
if (length == MM_HEADER_LEN_AV) {
st = av_new_stream(s, 0);
if (!st)
return AVERROR_NOMEM;
st->codec->codec_type = CODEC_TYPE_AUDIO;
st->codec->codec_tag = 0; /* no fourcc */
st->codec->codec_id = CODEC_ID_PCM_U8;
st->codec->channels = 1;
st->codec->sample_rate = 8000;
av_set_pts_info(st, 64, 1, 8000); /* 8000 hz */
}
mm->palette_control.palette_changed = 0;
mm->audio_pts = 0;
mm->video_pts = 0;
return 0;
}
static int mm_read_packet(AVFormatContext *s,
AVPacket *pkt)
{
MmDemuxContext *mm = (MmDemuxContext *)s->priv_data;
ByteIOContext *pb = &s->pb;
unsigned char preamble[MM_PREAMBLE_SIZE];
unsigned char pal[MM_PALETTE_SIZE];
unsigned int type, length;
int i;
while(1) {
if (get_buffer(pb, preamble, MM_PREAMBLE_SIZE) != MM_PREAMBLE_SIZE) {
return AVERROR_IO;
}
type = LE_16(&preamble[0]);
length = LE_16(&preamble[2]);
switch(type) {
case MM_TYPE_PALETTE :
url_fseek(pb, 4, SEEK_CUR); /* unknown data */
if (get_buffer(pb, pal, MM_PALETTE_SIZE) != MM_PALETTE_SIZE)
return AVERROR_IO;
url_fseek(pb, length - (4 + MM_PALETTE_SIZE), SEEK_CUR);
for (i=0; i<MM_PALETTE_COUNT; i++) {
int r = pal[i*3 + 0];
int g = pal[i*3 + 1];
int b = pal[i*3 + 2];
mm->palette_control.palette[i] = (r << 16) | (g << 8) | (b);
/* repeat palette, where each components is multiplied by four */
mm->palette_control.palette[i+128] = (r << 18) | (g << 10) | (b<<2);
}
mm->palette_control.palette_changed = 1;
break;
case MM_TYPE_INTER :
case MM_TYPE_INTRA :
case MM_TYPE_INTRA_HH :
case MM_TYPE_INTER_HH :
case MM_TYPE_INTRA_HHV :
case MM_TYPE_INTER_HHV :
/* output preamble + data */
if (av_new_packet(pkt, length + MM_PREAMBLE_SIZE))
return AVERROR_NOMEM;
memcpy(pkt->data, preamble, MM_PREAMBLE_SIZE);
if (get_buffer(pb, pkt->data + MM_PREAMBLE_SIZE, length) != length)
return AVERROR_IO;
pkt->size = length + MM_PREAMBLE_SIZE;
pkt->stream_index = 0;
pkt->pts = mm->video_pts++;
return 0;
case MM_TYPE_AUDIO :
if (av_get_packet(&s->pb, pkt, length)<0)
return AVERROR_NOMEM;
pkt->size = length;
pkt->stream_index = 1;
pkt->pts = mm->audio_pts++;
return 0;
default :
av_log(NULL, AV_LOG_INFO, "mm: unknown chunk type 0x%x\n", type);
url_fseek(pb, length, SEEK_CUR);
}
}
return 0;
}
static int mm_read_close(AVFormatContext *s)
{
return 0;
}
static AVInputFormat mm_iformat = {
"mm",
"American Laser Games MM format",
sizeof(MmDemuxContext),
mm_probe,
mm_read_header,
mm_read_packet,
mm_read_close,
};
int mm_init(void)
{
av_register_input_format(&mm_iformat);
return 0;
}
Markdown is supported
0% or .
You are about to add 0 people to the discussion. Proceed with caution.
Finish editing this message first!
Please register or to comment