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/*
Realaudio demuxer for MPlayer
(c) 2003, 2005 Roberto Togni
*/
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include "config.h"
#include "mp_msg.h"
#include "help_mp.h"
#include "stream.h"
#include "demuxer.h"
#include "stheader.h"
#include "bswap.h"
#define FOURCC_DOTRA mmioFOURCC('.','r','a', 0xfd)
#define FOURCC_144 mmioFOURCC('1','4','_','4')
#define FOURCC_288 mmioFOURCC('2','8','_','8')
#define FOURCC_DNET mmioFOURCC('d','n','e','t')
#define FOURCC_LPCJ mmioFOURCC('l','p','c','J')
typedef struct {
unsigned short version;
unsigned int dotranum;
unsigned int data_size;
unsigned short version2;
unsigned int hdr_size;
unsigned short codec_flavor;
unsigned int coded_framesize;
unsigned short sub_packet_h;
unsigned short frame_size;
unsigned short sub_packet_size;
char genr[4];
} ra_priv_t;
static int ra_check_file(demuxer_t* demuxer)
{
unsigned int chunk_id;
chunk_id = stream_read_dword_le(demuxer->stream);
if (chunk_id == FOURCC_DOTRA)
return DEMUXER_TYPE_REALAUDIO;
else
return 0;
}
void hexdump(char *, unsigned long);
// return value:
// 0 = EOF or no stream found
// 1 = successfully read a packet
static int demux_ra_fill_buffer(demuxer_t *demuxer, demux_stream_t *dsds)
{
ra_priv_t *ra_priv = demuxer->priv;
int len;
int timestamp;
int flags;
demux_stream_t *ds = demuxer->audio;
sh_audio_t *sh = ds->sh;
WAVEFORMATEX *wf = sh->wf;
demux_packet_t *dp;
if (demuxer->stream->eof)
return 0;
len = wf->nBlockAlign;
demuxer->filepos = stream_tell(demuxer->stream);
dp = new_demux_packet(len);
stream_read(demuxer->stream, dp->buffer, len);
dp->pts = demuxer->filepos / ra_priv->data_size;
dp->pos = demuxer->filepos;
dp->flags = 0;
ds_add_packet(ds, dp);
return 1;
}
extern void print_wave_header(WAVEFORMATEX *h);
static demuxer_t* demux_open_ra(demuxer_t* demuxer)
{
ra_priv_t* ra_priv = demuxer->priv;
sh_audio_t *sh;
int i;
char *buf;
if ((ra_priv = (ra_priv_t *)malloc(sizeof(ra_priv_t))) == NULL) {
mp_msg(MSGT_DEMUX, MSGL_ERR, "[RealAudio] Can't allocate memory for private data.\n");
return 0;
}
memset(ra_priv, 0, sizeof(ra_priv_t));
demuxer->priv = ra_priv;
sh = new_sh_audio(demuxer, 0);
demuxer->audio->id = 0;
sh->ds=demuxer->audio;
demuxer->audio->sh = sh;
ra_priv->version = stream_read_word(demuxer->stream);
mp_msg(MSGT_DEMUX,MSGL_V,"[RealAudio] File version: %d\n", ra_priv->version);
if ((ra_priv->version < 3) || (ra_priv->version > 4)) {
mp_msg(MSGT_DEMUX,MSGL_WARN,"[RealAudio] ra version %d is not supported yet, please "
"contact MPlayer developers\n", ra_priv->version);
return 0;
}
if (ra_priv->version == 3) {
ra_priv->hdr_size = stream_read_word(demuxer->stream);
stream_skip(demuxer->stream, 10);
ra_priv->data_size = stream_read_dword(demuxer->stream);
} else {
stream_skip(demuxer->stream, 2);
ra_priv->dotranum = stream_read_dword(demuxer->stream);
ra_priv->data_size = stream_read_dword(demuxer->stream);
ra_priv->version2 = stream_read_word(demuxer->stream);
ra_priv->hdr_size = stream_read_dword(demuxer->stream);
ra_priv->codec_flavor = stream_read_word(demuxer->stream);
ra_priv->coded_framesize = stream_read_dword(demuxer->stream);
stream_skip(demuxer->stream, 4); // data size?
stream_skip(demuxer->stream, 8);
ra_priv->sub_packet_h = stream_read_word(demuxer->stream);
ra_priv->frame_size = stream_read_word(demuxer->stream);
mp_msg(MSGT_DEMUX,MSGL_V,"[RealAudio] Frame size: %d\n", ra_priv->frame_size);
ra_priv->sub_packet_size = stream_read_word(demuxer->stream);
mp_msg(MSGT_DEMUX,MSGL_V,"[RealAudio] Sub packet size: %d\n", ra_priv->sub_packet_size);
stream_skip(demuxer->stream, 2);
sh->samplerate = stream_read_word(demuxer->stream);
stream_skip(demuxer->stream, 2);
sh->samplesize = stream_read_word(demuxer->stream);
sh->channels = stream_read_word(demuxer->stream);
mp_msg(MSGT_DEMUX,MSGL_V,"[RealAudio] %d channel, %d bit, %dHz\n", sh->channels,
sh->samplesize, sh->samplerate);
i = stream_read_char(demuxer->stream);
ra_priv->genr[0] = stream_read_char(demuxer->stream);
ra_priv->genr[1] = stream_read_char(demuxer->stream);
ra_priv->genr[2] = stream_read_char(demuxer->stream);
ra_priv->genr[3] = stream_read_char(demuxer->stream);
if (i != 4) {
mp_msg(MSGT_DEMUX,MSGL_WARN,"[RealAudio] Genr size is not 4 (%d), please report to "
"MPlayer developers\n", i);
stream_skip(demuxer->stream, i - 4);
}
i = stream_read_char(demuxer->stream);
sh->format = stream_read_dword_le(demuxer->stream);
if (i != 4) {
mp_msg(MSGT_DEMUX,MSGL_WARN,"[RealAudio] FourCC size is not 4 (%d), please report to "
"MPlayer developers\n", i);
stream_skip(demuxer->stream, i - 4);
}
stream_skip(demuxer->stream, 3);
}
if ((i = stream_read_char(demuxer->stream)) != 0) {
buf = malloc(i+1);
stream_read(demuxer->stream, buf, i);
buf[i] = 0;
demux_info_add(demuxer, "Title", buf);
free(buf);
}
if ((i = stream_read_char(demuxer->stream)) != 0) {
buf = malloc(i+1);
stream_read(demuxer->stream, buf, i);
buf[i] = 0;
demux_info_add(demuxer, "Author", buf);
free(buf);
}
if ((i = stream_read_char(demuxer->stream)) != 0) {
buf = malloc(i+1);
stream_read(demuxer->stream, buf, i);
buf[i] = 0;
demux_info_add(demuxer, "Copyright", buf);
free(buf);
}
if ((i = stream_read_char(demuxer->stream)) != 0) {
buf = malloc(i+1);
stream_read(demuxer->stream, buf, i);
buf[i] = 0;
demux_info_add(demuxer, "Comment", buf);
free(buf);
}
if (ra_priv->version == 3) {
if(ra_priv->hdr_size + 8 > stream_tell(demuxer->stream)) {
stream_skip(demuxer->stream, 1);
i = stream_read_char(demuxer->stream);
sh->format = stream_read_dword_le(demuxer->stream);
if (i != 4) {
mp_msg(MSGT_DEMUX,MSGL_WARN,"[RealAudio] FourCC size is not 4 (%d), please report to "
"MPlayer developers\n", i);
stream_skip(demuxer->stream, i - 4);
}
if (sh->format != FOURCC_LPCJ) {
mp_msg(MSGT_DEMUX,MSGL_WARN,"[RealAudio] Version 3 with FourCC %8x, please report to "
"MPlayer developers\n", sh->format);
}
} else
// If a stream does not have fourcc, let's assume it's 14.4
sh->format = FOURCC_LPCJ;
sh->channels = 1;
sh->samplesize = 16;
sh->samplerate = 8000;
ra_priv->frame_size = 240;
sh->format = FOURCC_144;
}
/* Fill WAVEFORMATEX */
sh->wf = malloc(sizeof(WAVEFORMATEX));
memset(sh->wf, 0, sizeof(WAVEFORMATEX));
sh->wf->nChannels = sh->channels;
sh->wf->wBitsPerSample = sh->samplesize;
sh->wf->nSamplesPerSec = sh->samplerate;
sh->wf->nAvgBytesPerSec = sh->samplerate*sh->samplesize/8;
sh->wf->nBlockAlign = ra_priv->frame_size;
sh->wf->cbSize = 0;
sh->wf->wFormatTag = sh->format;
switch (sh->format) {
case FOURCC_144:
mp_msg(MSGT_DEMUX,MSGL_V,"Audio: 14_4\n");
sh->wf->cbSize = 10/*+codecdata_length*/;
sh->wf = realloc(sh->wf, sizeof(WAVEFORMATEX)+sh->wf->cbSize);
((short*)(sh->wf+1))[0]=0;
((short*)(sh->wf+1))[1]=240;
((short*)(sh->wf+1))[2]=0;
((short*)(sh->wf+1))[3]=0x14;
((short*)(sh->wf+1))[4]=0;
break;
case FOURCC_288:
mp_msg(MSGT_DEMUX,MSGL_V,"Audio: 28_8\n");
sh->wf->cbSize = 10/*+codecdata_length*/;
sh->wf = realloc(sh->wf, sizeof(WAVEFORMATEX)+sh->wf->cbSize);
((short*)(sh->wf+1))[0]=0;
((short*)(sh->wf+1))[1]=ra_priv->sub_packet_h;
((short*)(sh->wf+1))[2]=ra_priv->codec_flavor;
((short*)(sh->wf+1))[3]=ra_priv->coded_framesize;
((short*)(sh->wf+1))[4]=0;
break;
case FOURCC_DNET:
mp_msg(MSGT_DEMUX,MSGL_V,"Audio: DNET -> AC3\n");
break;
default:
mp_msg(MSGT_DEMUX,MSGL_V,"Audio: Unknown (%d)\n", sh->format);
}
print_wave_header(sh->wf);
/* disable seeking */
demuxer->seekable = 0;
if(!ds_fill_buffer(demuxer->audio))
mp_msg(MSGT_DEMUXER,MSGL_INFO,"[RealAudio] No data.\n");
return demuxer;
}
static void demux_close_ra(demuxer_t *demuxer)
{
ra_priv_t* ra_priv = demuxer->priv;
if (ra_priv)
free(ra_priv);
return;
}
#if 0
/* please upload RV10 samples WITH INDEX CHUNK */
int demux_seek_ra(demuxer_t *demuxer, float rel_seek_secs, int flags)
{
real_priv_t *priv = demuxer->priv;
demux_stream_t *d_audio = demuxer->audio;
sh_audio_t *sh_audio = d_audio->sh;
int aid = d_audio->id;
int next_offset = 0;
int rel_seek_frames = 0;
int streams = 0;
return stream_seek(demuxer->stream, next_offset);
}
#endif
demuxer_desc_t demuxer_desc_realaudio = {
"Realaudio demuxer",
"realaudio",
"REALAUDIO",
"Roberto Togni",
"handles old audio only .ra files",
DEMUXER_TYPE_REALAUDIO,
1, // safe autodetect
ra_check_file,
demux_ra_fill_buffer,
demux_open_ra,
demux_close_ra,
NULL,
NULL
};
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