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complete AVS playback system (from Creature Shock computer game),

Browse Source 
courtesy of Aurelien Jacobs <aurel at gnuage dot org>

Originally committed as revision 5028 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
Mike Melanson 2006-02-17 03:17:42 +00:00
parent 220522479b
commit 2637670144
10 changed files with 417 additions and 5 deletions
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1
Changelog
View File

@ -40,6 +40,7 @@ version <next>
- Zip Blocks Motion Video decoder
- Improved Theora/VP3 decoder
- True Audio (TTA) decoder
- AVS demuxer and video decoder
version 0.4.9-pre1:

3
doc/ffmpeg-doc.texi
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@ -700,6 +700,8 @@ library:
@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
@item AVS @tab @tab X
@tab Multimedia format used by the Creature Shock game.
@end multitable
@code{X} means that encoding (resp. decoding) is supported.
@ -792,6 +794,7 @@ following image formats are supported:
@item CamStudio @tab @tab X @tab fourcc: CSCD
@item American Laser Games Video @tab @tab X @tab Used in games like Mad Dog McCree
@item ZMBV @tab @tab X @tab
@item AVS Video @tab @tab X @tab Video encoding used by the Creature Shock game.
@end multitable
@code{X} means that encoding (resp. decoding) is supported.

3
libavcodec/Makefile
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@ -29,6 +29,9 @@ endif
ifneq ($(CONFIG_ASV1_DECODER)$(CONFIG_ASV1_ENCODER)$(CONFIG_ASV2_DECODER)$(CONFIG_ASV2_ENCODER),)
OBJS+= asv1.o
endif
ifeq ($(CONFIG_AVS_DECODER),yes)
OBJS+= avs.o
endif
ifeq ($(CONFIG_CINEPAK_DECODER),yes)
OBJS+= cinepak.o
endif

3
libavcodec/allcodecs.c
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@ -511,6 +511,9 @@ void avcodec_register_all(void)
#ifdef CONFIG_TTA_DECODER
register_avcodec(&tta_decoder);
#endif //CONFIG_TTA_DECODER
#ifdef CONFIG_AVS_DECODER
register_avcodec(&avs_decoder);
#endif //CONFIG_AVS_DECODER
#ifdef CONFIG_RAWVIDEO_DECODER
register_avcodec(&rawvideo_decoder);
#endif //CONFIG_RAWVIDEO_DECODER

6
libavcodec/avcodec.h
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@ -21,8 +21,8 @@ extern "C" {
#define AV_STRINGIFY(s) AV_TOSTRING(s)
#define AV_TOSTRING(s) #s
#define LIBAVCODEC_VERSION_INT ((51<<16)+(6<<8)+0)
#define LIBAVCODEC_VERSION 51.6.0
#define LIBAVCODEC_VERSION_INT ((51<<16)+(7<<8)+0)
#define LIBAVCODEC_VERSION 51.7.0
#define LIBAVCODEC_BUILD LIBAVCODEC_VERSION_INT
#define LIBAVCODEC_IDENT "Lavc" AV_STRINGIFY(LIBAVCODEC_VERSION)
@ -117,6 +117,7 @@ enum CodecID {
CODEC_ID_CSCD,
CODEC_ID_MMVIDEO,
CODEC_ID_ZMBV,
CODEC_ID_AVS,
/* various pcm "codecs" */
CODEC_ID_PCM_S16LE= 0x10000,
@ -2233,6 +2234,7 @@ extern AVCodec libgsm_decoder;
extern AVCodec bmp_decoder;
extern AVCodec mmvideo_decoder;
extern AVCodec zmbv_decoder;
extern AVCodec avs_decoder;
/* pcm codecs */
#define PCM_CODEC(id, name) \

158
libavcodec/avs.c Normal file
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@ -0,0 +1,158 @@
/*
* AVS video decoder.
* Copyright (c) 2006 Aurelien Jacobs <aurel@gnuage.org>
*
* 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., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include "avcodec.h"
#include "bitstream.h"
typedef struct {
AVFrame picture;
} avs_context_t;
typedef enum {
AVS_VIDEO = 0x01,
AVS_AUDIO = 0x02,
AVS_PALETTE = 0x03,
AVS_GAME_DATA = 0x04,
} avs_block_type_t;
typedef enum {
AVS_I_FRAME = 0x00,
AVS_P_FRAME_3X3 = 0x01,
AVS_P_FRAME_2X2 = 0x02,
AVS_P_FRAME_2X3 = 0x03,
} avs_video_sub_type_t;
static int
avs_decode_frame(AVCodecContext * avctx,
void *data, int *data_size, uint8_t * buf, int buf_size)
{
avs_context_t *const avs = avctx->priv_data;
AVFrame *picture = data;
AVFrame *const p = (AVFrame *) & avs->picture;
uint8_t *table, *vect, *out;
int i, j, x, y, stride, vect_w = 3, vect_h = 3;
int sub_type;
avs_block_type_t type;
GetBitContext change_map;
if (avctx->reget_buffer(avctx, p)) {
av_log(avctx, AV_LOG_ERROR, "reget_buffer() failed\n");
return -1;
}
p->reference = 1;
p->pict_type = FF_P_TYPE;
p->key_frame = 0;
out = avs->picture.data[0];
stride = avs->picture.linesize[0];
sub_type = buf[0];
type = buf[1];
buf += 4;
if (type == AVS_PALETTE) {
int first, last;
uint32_t *pal = (uint32_t *) avs->picture.data[1];
first = LE_16(buf);
last = first + LE_16(buf + 2);
buf += 4;
for (i=first; i<last; i++, buf+=3)
pal[i] = (buf[0] << 18) | (buf[1] << 10) | (buf[2] << 2);
sub_type = buf[0];
type = buf[1];
buf += 4;
}
if (type != AVS_VIDEO)
return -1;
switch (sub_type) {
case AVS_I_FRAME:
p->pict_type = FF_I_TYPE;
p->key_frame = 1;
case AVS_P_FRAME_3X3:
vect_w = 3;
vect_h = 3;
break;
case AVS_P_FRAME_2X2:
vect_w = 2;
vect_h = 2;
break;
case AVS_P_FRAME_2X3:
vect_w = 2;
vect_h = 3;
break;
default:
return -1;
}
table = buf + (256 * vect_w * vect_h);
if (sub_type != AVS_I_FRAME) {
int map_size = ((318 / vect_w + 7) / 8) * (198 / vect_h);
init_get_bits(&change_map, table, map_size);
table += map_size;
}
for (y=0; y<198; y+=vect_h) {
for (x=0; x<318; x+=vect_w) {
if (sub_type == AVS_I_FRAME || get_bits1(&change_map)) {
vect = &buf[*table++ * (vect_w * vect_h)];
for (j=0; j<vect_w; j++) {
out[(y + 0) * stride + x + j] = vect[(0 * vect_w) + j];
out[(y + 1) * stride + x + j] = vect[(1 * vect_w) + j];
if (vect_h == 3)
out[(y + 2) * stride + x + j] =
vect[(2 * vect_w) + j];
}
}
}
if (sub_type != AVS_I_FRAME)
align_get_bits(&change_map);
}
*picture = *(AVFrame *) & avs->picture;
*data_size = sizeof(AVPicture);
return buf_size;
}
static int avs_decode_init(AVCodecContext * avctx)
{
avctx->pix_fmt = PIX_FMT_PAL8;
return 0;
}
AVCodec avs_decoder = {
"avs",
CODEC_TYPE_VIDEO,
CODEC_ID_AVS,
sizeof(avs_context_t),
avs_decode_init,
NULL,
NULL,
avs_decode_frame,
CODEC_CAP_DR1,
};

2
libavformat/Makefile
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@ -18,7 +18,7 @@ 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 mm.o
voc.o tta.o mm.o avs.o
# muxers
ifeq ($(CONFIG_MUXERS),yes)

1
libavformat/allformats.c
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@ -118,6 +118,7 @@ void av_register_all(void)
daud_init();
voc_init();
tta_init();
avs_init();
#ifdef CONFIG_MUXERS
/* image formats */

7
libavformat/avformat.h
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@ -5,8 +5,8 @@
extern "C" {
#endif
#define LIBAVFORMAT_VERSION_INT ((50<<16)+(2<<8)+1)
#define LIBAVFORMAT_VERSION 50.2.1
#define LIBAVFORMAT_VERSION_INT ((50<<16)+(3<<8)+0)
#define LIBAVFORMAT_VERSION 50.3.0
#define LIBAVFORMAT_BUILD LIBAVFORMAT_VERSION_INT
#define LIBAVFORMAT_IDENT "Lavf" AV_STRINGIFY(LIBAVFORMAT_VERSION)
@ -564,6 +564,9 @@ int ff_adts_init(void);
/* mm.c */
int mm_init(void);
/* avs.c */
int avs_init(void);
#include "rtp.h"
#include "rtsp.h"

238
libavformat/avs.c Normal file
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@ -0,0 +1,238 @@
/*
* AVS demuxer.
* Copyright (c) 2006 Aurelien Jacobs <aurel@gnuage.org>
*
* 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., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include "avformat.h"
#include "voc.h"
typedef struct avs_format {
voc_dec_context_t voc;
AVStream *st_video;
AVStream *st_audio;
int width;
int height;
int bits_per_sample;
int fps;
int nb_frames;
int remaining_frame_size;
int remaining_audio_size;
} avs_format_t;
typedef enum avs_block_type {
AVS_VIDEO = 0x01,
AVS_AUDIO = 0x02,
AVS_PALETTE = 0x03,
AVS_GAME_DATA = 0x04,
} avs_block_type_t;
#ifdef CONFIG_DEMUXERS
static int avs_probe(AVProbeData * p)
{
const uint8_t *d;
if (p->buf_size < 2)
return 0;
d = p->buf;
if (d[0] == 'w' && d[1] == 'W' && d[2] == 0x10 && d[3] == 0)
return 50;
return 0;
}
static int avs_read_header(AVFormatContext * s, AVFormatParameters * ap)
{
avs_format_t *avs = s->priv_data;
s->ctx_flags |= AVFMTCTX_NOHEADER;
url_fskip(&s->pb, 4);
avs->width = get_le16(&s->pb);
avs->height = get_le16(&s->pb);
avs->bits_per_sample = get_le16(&s->pb);
avs->fps = get_le16(&s->pb);
avs->nb_frames = get_le32(&s->pb);
avs->remaining_frame_size = 0;
avs->remaining_audio_size = 0;
avs->st_video = avs->st_audio = NULL;
if (avs->width != 318 || avs->height != 198)
av_log(s, AV_LOG_ERROR, "This avs pretend to be %dx%d "
"when the avs format is supposed to be 318x198 only.\n",
avs->width, avs->height);
return 0;
}
static int
avs_read_video_packet(AVFormatContext * s, AVPacket * pkt,
avs_block_type_t type, int sub_type, int size,
uint8_t * palette, int palette_size)
{
avs_format_t *avs = s->priv_data;
int ret;
ret = av_new_packet(pkt, size + palette_size);
if (ret < 0)
return ret;
if (palette_size) {
pkt->data[0] = 0x00;
pkt->data[1] = 0x03;
pkt->data[2] = palette_size & 0xFF;
pkt->data[3] = (palette_size >> 8) & 0xFF;
memcpy(pkt->data + 4, palette, palette_size - 4);
}
pkt->data[palette_size + 0] = sub_type;
pkt->data[palette_size + 1] = type;
pkt->data[palette_size + 2] = size & 0xFF;
pkt->data[palette_size + 3] = (size >> 8) & 0xFF;
ret = get_buffer(&s->pb, pkt->data + palette_size + 4, size - 4) + 4;
if (ret < size) {
av_free_packet(pkt);
return AVERROR_IO;
}
pkt->size = ret + palette_size;
pkt->stream_index = avs->st_video->index;
if (sub_type == 0)
pkt->flags |= PKT_FLAG_KEY;
return 0;
}
static int avs_read_audio_packet(AVFormatContext * s, AVPacket * pkt)
{
avs_format_t *avs = s->priv_data;
int ret, size;
size = url_ftell(&s->pb);
ret = voc_get_packet(s, pkt, avs->st_audio, avs->remaining_audio_size);
size = url_ftell(&s->pb) - size;
avs->remaining_audio_size -= size;
if (ret == AVERROR_IO)
return 0; /* this indicate EOS */
if (ret < 0)
return ret;
pkt->stream_index = avs->st_audio->index;
pkt->flags |= PKT_FLAG_KEY;
return size;
}
static int avs_read_packet(AVFormatContext * s, AVPacket * pkt)
{
avs_format_t *avs = s->priv_data;
int sub_type = 0, size = 0;
avs_block_type_t type = 0;
int palette_size = 0;
uint8_t palette[4 + 3 * 256];
int ret;
if (avs->remaining_audio_size > 0)
if (avs_read_audio_packet(s, pkt) > 0)
return 0;
while (1) {
if (avs->remaining_frame_size <= 0) {
if (!get_le16(&s->pb)) /* found EOF */
return AVERROR_IO;
avs->remaining_frame_size = get_le16(&s->pb) - 4;
}
while (avs->remaining_frame_size > 0) {
sub_type = get_byte(&s->pb);
type = get_byte(&s->pb);
size = get_le16(&s->pb);
avs->remaining_frame_size -= size;
switch (type) {
case AVS_PALETTE:
ret = get_buffer(&s->pb, palette, size - 4);
if (ret < size - 4)
return AVERROR_IO;
palette_size = size;
break;
case AVS_VIDEO:
if (!avs->st_video) {
avs->st_video = av_new_stream(s, AVS_VIDEO);
if (avs->st_video == NULL)
return AVERROR_NOMEM;
avs->st_video->codec->codec_type = CODEC_TYPE_VIDEO;
avs->st_video->codec->codec_id = CODEC_ID_AVS;
avs->st_video->codec->width = avs->width;
avs->st_video->codec->height = avs->height;
avs->st_video->codec->bits_per_sample=avs->bits_per_sample;
avs->st_video->nb_frames = avs->nb_frames;
avs->st_video->codec->time_base = (AVRational) {
1, avs->fps};
}
return avs_read_video_packet(s, pkt, type, sub_type, size,
palette, palette_size);
case AVS_AUDIO:
if (!avs->st_audio) {
avs->st_audio = av_new_stream(s, AVS_AUDIO);
if (avs->st_audio == NULL)
return AVERROR_NOMEM;
avs->st_audio->codec->codec_type = CODEC_TYPE_AUDIO;
}
avs->remaining_audio_size = size - 4;
size = avs_read_audio_packet(s, pkt);
if (size != 0)
return size;
break;
default:
url_fskip(&s->pb, size - 4);
}
}
}
}
static int avs_read_close(AVFormatContext * s)
{
return 0;
}
static AVInputFormat avs_iformat = {
"avs",
"avs format",
sizeof(avs_format_t),
avs_probe,
avs_read_header,
avs_read_packet,
avs_read_close,
};
#endif /* CONFIG_DEMUXERS */
int avs_init(void)
{
#ifdef CONFIG_DEMUXERS
av_register_input_format(&avs_iformat);
#endif /* CONFIG_DEMUXERS */
return 0;
}