Commit ad81a9fe authored by Mike Melanson's avatar Mike Melanson

Electronic Arts Game Multimedia format demuxer (WVE/UV2/etc.)

Originally committed as revision 3600 to svn://svn.ffmpeg.org/ffmpeg/trunk
parent f62e9435
......@@ -4,6 +4,7 @@ version <next>
- Sierra Online audio file demuxer and decoder
- Apple QuickDraw (qdrw) video decoder
- Creative ADPCM audio decoder
- Electronic Arts Multimedia (WVE/UV2/etc.) file demuxer
version 0.4.9-pre1:
......
......@@ -687,6 +687,8 @@ library:
@tab .sol files used in Sierra Online games
@item Matroska @tab @tab X
@end multitable
@item Electronic Arts Multimedia @tab @tab X
@tab used in various EA games; files have extensions like WVE and UV2
@code{X} means that the encoding (resp. decoding) is supported.
......
......@@ -16,7 +16,7 @@ OBJS+=mpeg.o mpegts.o mpegtsenc.o ffm.o crc.o img.o img2.o raw.o rm.o \
avienc.o avidec.o wav.o swf.o au.o gif.o mov.o mpjpeg.o dv.o \
yuv4mpeg.o 4xm.o flvenc.o flvdec.o movenc.o psxstr.o idroq.o ipmovie.o \
nut.o wc3movie.o mp3.o westwood.o segafilm.o idcin.o flic.o \
sierravmd.o matroska.o sol.o
sierravmd.o matroska.o sol.o electronicarts.o
ifeq ($(CONFIG_RISKY),yes)
OBJS+= asf.o
......
......@@ -105,6 +105,7 @@ void av_register_all(void)
nut_init();
matroska_init();
sol_init();
ea_init();
#ifdef CONFIG_ENCODERS
/* image formats */
......
......@@ -502,6 +502,9 @@ int matroska_init(void);
/* sol.c */
int sol_init(void);
/* electronicarts.c */
int ea_init(void);
#include "rtp.h"
#include "rtsp.h"
......
/* Electronic Arts Multimedia File Demuxer
* Copyright (c) 2004 The ffmpeg Project
*
* 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 electronicarts.c
* Electronic Arts Multimedia file demuxer (WVE/UV2/etc.)
* by Robin Kay (komadori at gekkou.co.uk)
*/
#include "avformat.h"
#define SCHl_TAG MKTAG('S', 'C', 'H', 'l')
#define PT00_TAG MKTAG('P', 'T', 0x0, 0x0)
#define SCDl_TAG MKTAG('S', 'C', 'D', 'l')
#define pIQT_TAG MKTAG('p', 'I', 'Q', 'T')
#define SCEl_TAG MKTAG('S', 'C', 'E', 'l')
#define _TAG MKTAG('', '', '', '')
#define EA_SAMPLE_RATE 22050
#define EA_BITS_PER_SAMPLE 16
#define EA_PREAMBLE_SIZE 8
typedef struct EaDemuxContext {
int width;
int height;
int video_stream_index;
int track_count;
int audio_stream_index;
int audio_frame_counter;
int64_t audio_pts;
int64_t video_pts;
int video_pts_inc;
float fps;
int num_channels;
int num_samples;
int compression_type;
} EaDemuxContext;
static uint32_t read_arbitary(ByteIOContext *pb) {
uint8_t size, byte;
int i;
uint32_t word;
size = get_byte(pb);
word = 0;
for (i = 0; i < size; i++) {
byte = get_byte(pb);
word <<= 8;
word |= byte;
}
return word;
}
/*
* Process WVE file header
* Returns 1 if the WVE file is valid and successfully opened, 0 otherwise
*/
static int process_ea_header(AVFormatContext *s) {
int inHeader;
uint32_t blockid, size;
EaDemuxContext *ea = (EaDemuxContext *)s->priv_data;
ByteIOContext *pb = &s->pb;
if (get_buffer(pb, (void*)&blockid, 4) != 4) {
return 0;
}
if (le2me_32(blockid) != SCHl_TAG) {
return 0;
}
if (get_buffer(pb, (void*)&size, 4) != 4) {
return 0;
}
size = le2me_32(size);
if (get_buffer(pb, (void*)&blockid, 4) != 4) {
return 0;
}
if (le2me_32(blockid) != PT00_TAG) {
av_log (s, AV_LOG_ERROR, "PT header missing\n");
return 0;
}
inHeader = 1;
while (inHeader) {
int inSubheader;
uint8_t byte;
byte = get_byte(pb) & 0xFF;
switch (byte) {
case 0xFD:
av_log (s, AV_LOG_INFO, "entered audio subheader\n");
inSubheader = 1;
while (inSubheader) {
uint8_t subbyte;
subbyte = get_byte(pb) & 0xFF;
switch (subbyte) {
case 0x82:
ea->num_channels = read_arbitary(pb);
av_log (s, AV_LOG_INFO, "num_channels (element 0x82) set to 0x%08x\n", ea->num_channels);
break;
case 0x83:
ea->compression_type = read_arbitary(pb);
av_log (s, AV_LOG_INFO, "compression_type (element 0x83) set to 0x%08x\n", ea->compression_type);
break;
case 0x85:
ea->num_samples = read_arbitary(pb);
av_log (s, AV_LOG_INFO, "num_samples (element 0x85) set to 0x%08x\n", ea->num_samples);
break;
case 0x8A:
av_log (s, AV_LOG_INFO, "element 0x%02x set to 0x%08x\n", subbyte, read_arbitary(pb));
av_log (s, AV_LOG_INFO, "exited audio subheader\n");
inSubheader = 0;
break;
default:
av_log (s, AV_LOG_INFO, "element 0x%02x set to 0x%08x\n", subbyte, read_arbitary(pb));
break;
}
}
break;
case 0xFF:
av_log (s, AV_LOG_INFO, "end of header block reached\n");
inHeader = 0;
break;
default:
av_log (s, AV_LOG_INFO, "header element 0x%02x set to 0x%08x\n", byte, read_arbitary(pb));
break;
}
}
if ((ea->num_channels != 2) || (ea->compression_type != 7)) {
av_log (s, AV_LOG_ERROR, "unsupported stream type\n");
return 0;
}
/* skip to the start of the data */
url_fseek(pb, size, SEEK_SET);
return 1;
}
static int ea_probe(AVProbeData *p)
{
if (p->buf_size < 4)
return 0;
if (LE_32(&p->buf[0]) != SCHl_TAG)
return 0;
return AVPROBE_SCORE_MAX;
}
static int ea_read_header(AVFormatContext *s,
AVFormatParameters *ap)
{
EaDemuxContext *ea = (EaDemuxContext *)s->priv_data;
AVStream *st;
if (!process_ea_header(s))
return AVERROR_IO;
#if 0
/* initialize the video decoder stream */
st = av_new_stream(s, 0);
if (!st)
return AVERROR_NOMEM;
av_set_pts_info(st, 33, 1, 90000);
ea->video_stream_index = st->index;
st->codec.codec_type = CODEC_TYPE_VIDEO;
st->codec.codec_id = CODEC_ID_EA_MJPEG;
st->codec.codec_tag = 0; /* no fourcc */
#endif
/* initialize the audio decoder stream */
st = av_new_stream(s, 0);
if (!st)
return AVERROR_NOMEM;
av_set_pts_info(st, 33, 1, EA_SAMPLE_RATE);
st->codec.codec_type = CODEC_TYPE_AUDIO;
st->codec.codec_id = CODEC_ID_ADPCM_EA;
st->codec.codec_tag = 0; /* no tag */
st->codec.channels = ea->num_channels;
st->codec.sample_rate = EA_SAMPLE_RATE;
st->codec.bits_per_sample = EA_BITS_PER_SAMPLE;
st->codec.bit_rate = st->codec.channels * st->codec.sample_rate *
st->codec.bits_per_sample / 4;
st->codec.block_align = st->codec.channels * st->codec.bits_per_sample;
ea->audio_stream_index = st->index;
ea->audio_frame_counter = 0;
return 1;
}
static int ea_read_packet(AVFormatContext *s,
AVPacket *pkt)
{
EaDemuxContext *ea = s->priv_data;
ByteIOContext *pb = &s->pb;
int ret = 0;
int packet_read = 0;
unsigned char preamble[EA_PREAMBLE_SIZE];
unsigned int chunk_type, chunk_size;
while (!packet_read) {
if (get_buffer(pb, preamble, EA_PREAMBLE_SIZE) != EA_PREAMBLE_SIZE)
return AVERROR_IO;
chunk_type = LE_32(&preamble[0]);
chunk_size = LE_32(&preamble[4]) - EA_PREAMBLE_SIZE;
switch (chunk_type) {
/* audio data */
case SCDl_TAG:
if (av_new_packet(pkt, chunk_size))
ret = AVERROR_IO;
else {
ret = get_buffer(pb, pkt->data, chunk_size);
if (ret != chunk_size)
ret = AVERROR_IO;
else {
pkt->stream_index = ea->audio_stream_index;
pkt->pts = 90000;
pkt->pts *= ea->audio_frame_counter;
pkt->pts /= EA_SAMPLE_RATE;
/* 2 samples/byte, 1 or 2 samples per frame depending
* on stereo; chunk also has 12-byte header */
ea->audio_frame_counter += ((chunk_size - 12) * 2) /
ea->num_channels;
}
}
packet_read = 1;
break;
/* ending tag */
case SCEl_TAG:
ret = AVERROR_IO;
packet_read = 1;
break;
default:
url_fseek(pb, chunk_size, SEEK_CUR);
break;
}
/* ending packet */
if (chunk_type == SCEl_TAG) {
}
}
return ret;
}
static int ea_read_close(AVFormatContext *s)
{
// EaDemuxContext *ea = (EaDemuxContext *)s->priv_data;
return 0;
}
static AVInputFormat ea_iformat = {
"ea",
"Electronic Arts Multimedia Format",
sizeof(EaDemuxContext),
ea_probe,
ea_read_header,
ea_read_packet,
ea_read_close,
};
int ea_init(void)
{
av_register_input_format(&ea_iformat);
return 0;
}
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