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mpv/libmpdemux/demux_viv.c

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// VIVO file parser by A'rpi
// VIVO text header parser and audio support by alex
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <string.h> /* strtok */
#include "config.h"
#include "mp_msg.h"
#include "help_mp.h"
#include "stream.h"
#include "demuxer.h"
#include "stheader.h"
#include "bswap.h"
/* parameters ! */
int vivo_param_version = -1;
char *vivo_param_acodec = NULL;
int vivo_param_abitrate = -1;
int vivo_param_samplerate = -1;
int vivo_param_bytesperblock = -1;
int vivo_param_width = -1;
int vivo_param_height = -1;
int vivo_param_vformat = -1;
/* VIVO audio standards from vivog723.acm:
G.723:
FormatTag = 0x111
Channels = 1 - mono
SamplesPerSec = 8000 - 8khz
AvgBytesPerSec = 800
BlockAlign (bytes per block) = 24
BitsPerSample = 8
Siren:
FormatTag = 0x112
Channels = 1 - mono
SamplesPerSec = 16000 - 16khz
AvgBytesPerSec = 2000
BlockAlign (bytes per block) = 40
BitsPerSample = 8
*/
//enum { VIVO_AUDIO_G723, VIVO_AUDIO_SIREN };
#define VIVO_AUDIO_G723 1
#define VIVO_AUDIO_SIREN 2
typedef struct {
/* generic */
char version;
int supported;
/* info */
char *title;
char *author;
char *copyright;
char *producer;
/* video */
float fps;
int width;
int height;
int disp_width;
int disp_height;
/* audio */
int audio_codec;
int audio_bitrate;
int audio_samplerate;
int audio_bytesperblock;
} vivo_priv_t;
/* parse all possible extra headers */
/* (audio headers are seperate - mostly with recordtype=3 or 4) */
#define TEXTPARSE_ALL 1
static void vivo_parse_text_header(demuxer_t *demux, int header_len)
{
vivo_priv_t* priv = demux->priv;
char *buf;
int i;
char *token;
char *opt, *param;
int parser_in_audio_block = 0;
if (!demux->priv)
{
priv = malloc(sizeof(vivo_priv_t));
memset(priv, 0, sizeof(vivo_priv_t));
demux->priv = priv;
priv->supported = 0;
}
buf = malloc(header_len);
opt = malloc(header_len);
param = malloc(header_len);
stream_read(demux->stream, buf, header_len);
i=0;
while(i<header_len && buf[i]==0x0D && buf[i+1]==0x0A) i+=2; // skip empty lines
token = strtok(buf, (char *)&("\x0d\x0a"));
while (token && (header_len>2))
{
header_len -= strlen(token)+2;
if (sscanf(token, "%[^:]:%[^\n]", opt, param) != 2)
{
mp_msg(MSGT_DEMUX, MSGL_V, "viv_text_header_parser: bad line: '%s' at ~%p\n",
token, stream_tell(demux->stream));
break;
}
mp_dbg(MSGT_DEMUX, MSGL_DBG3, "token: '%s' (%d bytes/%d bytes left)\n",
token, strlen(token), header_len);
mp_dbg(MSGT_DEMUX, MSGL_DBG3, "token => o: '%s', p: '%s'\n",
opt, param);
/* checking versions: only v1 or v2 is suitable (or known?:) */
if (!strcmp(opt, "Version"))
{
mp_msg(MSGT_DEMUX, MSGL_DBG2, "Version: %s\n", param);
if (!strncmp(param, "Vivo/1", 6) || !strncmp(param, "Vivo/2", 6))
{
priv->supported = 1;
/* save major version for fourcc */
priv->version = param[5];
}
}
/* video specific */
if (!strcmp(opt, "FPS"))
{
mp_msg(MSGT_DEMUX, MSGL_DBG2, "FPS: %f\n", atof(param));
priv->fps = atof(param);
}
if (!strcmp(opt, "Width"))
{
mp_msg(MSGT_DEMUX, MSGL_DBG2, "Width: %d\n", atoi(param));
priv->width = atoi(param);
}
if (!strcmp(opt, "Height"))
{
mp_msg(MSGT_DEMUX, MSGL_DBG2, "Height: %d\n", atoi(param));
priv->height = atoi(param);
}
if (!strcmp(opt, "DisplayWidth"))
{
mp_msg(MSGT_DEMUX, MSGL_DBG2, "Display Width: %d\n", atoi(param));
priv->disp_width = atoi(param);
}
if (!strcmp(opt, "DisplayHeight"))
{
mp_msg(MSGT_DEMUX, MSGL_DBG2, "Display Height: %d\n", atoi(param));
priv->disp_height = atoi(param);
}
/* audio specific */
if (!strcmp(opt, "RecordType"))
{
/* no audio recordblock by Vivo/1.00, 3 and 4 by Vivo/2.00 */
if ((atoi(param) == 3) || (atoi(param) == 4))
parser_in_audio_block = 1;
else
parser_in_audio_block = 0;
}
if (!strcmp(opt, "NominalBitrate"))
{
priv->audio_bitrate = atoi(param);
if (priv->audio_bitrate == 2000)
priv->audio_codec = VIVO_AUDIO_SIREN;
if (priv->audio_bitrate == 800)
priv->audio_codec = VIVO_AUDIO_G723;
}
if (!strcmp(opt, "SamplingFrequency"))
{
priv->audio_samplerate = atoi(param);
if (priv->audio_samplerate == 16000)
priv->audio_codec = VIVO_AUDIO_SIREN;
if (priv->audio_samplerate == 8000)
priv->audio_codec = VIVO_AUDIO_G723;
}
if (!strcmp(opt, "Length") && (parser_in_audio_block == 1))
{
priv->audio_bytesperblock = atoi(param); /* 24 or 40 kbps */
if (priv->audio_bytesperblock == 40)
priv->audio_codec = VIVO_AUDIO_SIREN;
if (priv->audio_bytesperblock == 24)
priv->audio_codec = VIVO_AUDIO_G723;
}
/* only for displaying some informations about movie*/
if (!strcmp(opt, "Title"))
{
demux_info_add(demux, "name", param);
priv->title = strdup(param);
}
if (!strcmp(opt, "Author"))
{
demux_info_add(demux, "author", param);
priv->author = strdup(param);
}
if (!strcmp(opt, "Copyright"))
{
demux_info_add(demux, "copyright", param);
priv->copyright = strdup(param);
}
if (!strcmp(opt, "Producer"))
{
demux_info_add(demux, "encoder", param);
priv->producer = strdup(param);
}
/* get next token */
token = strtok(NULL, (char *)&("\x0d\x0a"));
}
if (buf)
free(buf);
if (opt)
free(opt);
if (param)
free(param);
}
int vivo_check_file(demuxer_t* demuxer){
int i=0;
int len;
int c;
unsigned char buf[2048+256];
vivo_priv_t* priv;
int orig_pos = stream_tell(demuxer->stream);
mp_msg(MSGT_DEMUX,MSGL_V,"Checking for VIVO\n");
c=stream_read_char(demuxer->stream);
if(c==-256) return 0;
len=0;
while((c=stream_read_char(demuxer->stream))>=0x80){
len+=0x80*(c-0x80);
if(len>1024) return 0;
}
len+=c;
mp_msg(MSGT_DEMUX,MSGL_V,"header block 1 size: %d\n",len);
//stream_skip(demuxer->stream,len);
priv=malloc(sizeof(vivo_priv_t));
memset(priv,0,sizeof(vivo_priv_t));
demuxer->priv=priv;
#if 0
vivo_parse_text_header(demuxer, len);
if (priv->supported == 0)
return 0;
#else
/* this is enought for check (for now) */
stream_read(demuxer->stream,buf,len);
buf[len]=0;
// printf("VIVO header: '%s'\n",buf);
// parse header:
i=0;
while(i<len && buf[i]==0x0D && buf[i+1]==0x0A) i+=2; // skip empty lines
if(strncmp(buf+i,"Version:Vivo/",13)) return 0; // bad version/type!
#endif
#if 0
c=stream_read_char(demuxer->stream);
if(c) return 0;
len2=0;
while((c=stream_read_char(demuxer->stream))>=0x80){
len2+=0x80*(c-0x80);
if(len+len2>2048) return 0;
}
len2+=c;
mp_msg(MSGT_DEMUX,MSGL_V,"header block 2 size: %d\n",len2);
stream_skip(demuxer->stream,len2);
// stream_read(demuxer->stream,buf+len,len2);
#endif
// c=stream_read_char(demuxer->stream);
// printf("first packet: %02X\n",c);
stream_seek(demuxer->stream, orig_pos);
return 1;
}
static int audio_pos=0;
static int audio_rate=0;
// return value:
// 0 = EOF or no stream found
// 1 = successfully read a packet
int demux_vivo_fill_buffer(demuxer_t *demux){
demux_stream_t *ds=NULL;
int c;
int len=0;
int seq;
int prefix=0;
demux->filepos=stream_tell(demux->stream);
c=stream_read_char(demux->stream);
if (c == -256) /* EOF */
return 0;
// printf("c=%x,%02X\n",c,c&0xf0);
if (c == 0x82)
{
/* ok, this works, but pts calculating from header is required! */
#warning "Calculate PTS from picture header!"
prefix = 1;
c = stream_read_char(demux->stream);
printf("packet 0x82(pos=%u) chunk=%x\n",
(int)stream_tell(demux->stream), c);
}
switch(c&0xF0){
case 0x00: // header - skip it!
{
len=stream_read_char(demux->stream);
if(len>=0x80) len=0x80*(len-0x80)+stream_read_char(demux->stream);
printf("vivo extra header: %d bytes\n",len);
#ifdef TEXTPARSE_ALL
{
int pos;
/* also try to parse all headers */
pos = stream_tell(demux->stream);
vivo_parse_text_header(demux, len);
stream_seek(demux->stream, pos);
}
#endif
break;
}
case 0x10: // video packet
if (prefix == 1)
len = stream_read_char(demux->stream);
else
len=128;
ds=demux->video;
break;
case 0x20: // video packet
len=stream_read_char(demux->stream);
ds=demux->video;
break;
case 0x30: // audio packet
if (prefix == 1)
len = stream_read_char(demux->stream);
else
len=40; /* 40kbps */
ds=demux->audio;
audio_pos+=len;
break;
case 0x40: // audio packet
if (prefix == 1)
len = stream_read_char(demux->stream);
else
len=24; /* 24kbps */
ds=demux->audio;
audio_pos+=len;
break;
default:
mp_msg(MSGT_DEMUX,MSGL_WARN,"VIVO - unknown ID found: %02X at pos %lu contact author!\n",
c, stream_tell(demux->stream));
return 0;
}
// printf("chunk=%x, len=%d\n", c, len);
if(!ds || ds->id<-1){
if(len) stream_skip(demux->stream,len);
return 1;
}
seq=c&0x0F;
if(ds->asf_packet){
if(ds->asf_seq!=seq){
// closed segment, finalize packet:
ds_add_packet(ds,ds->asf_packet);
ds->asf_packet=NULL;
// printf("packet!\n");
} else {
// append data to it!
demux_packet_t* dp=ds->asf_packet;
dp->buffer=realloc(dp->buffer,dp->len+len);
//memcpy(dp->buffer+dp->len,data,len);
stream_read(demux->stream,dp->buffer+dp->len,len);
mp_dbg(MSGT_DEMUX,MSGL_DBG4,"data appended! %d+%d\n",dp->len,len);
dp->len+=len;
// we are ready now.
if((c&0xF0)==0x20) --ds->asf_seq; // hack!
return 1;
}
}
// create new packet:
{ demux_packet_t* dp;
dp=new_demux_packet(len);
//memcpy(dp->buffer,data,len);
stream_read(demux->stream,dp->buffer,len);
dp->pts=audio_rate?((float)audio_pos/(float)audio_rate):0;
// dp->flags=keyframe;
// if(ds==demux->video) printf("ASF time: %8d dur: %5d \n",time,dur);
dp->pos=demux->filepos;
ds->asf_packet=dp;
ds->asf_seq=seq;
// we are ready now.
return 1;
}
}
static const short h263_format[8][2] = {
{ 0, 0 },
{ 128, 96 },
{ 176, 144 },
{ 352, 288 },
{ 704, 576 },
{ 1408, 1152 },
{ 320, 240 } // ??????? or 240x180 (found in vivo2) ?
};
static unsigned char* buffer;
static int bufptr=0;
static int bitcnt=0;
static unsigned char buf=0;
static int format, width, height;
static unsigned int x_get_bits(int n){
unsigned int x=0;
while(n-->0){
if(!bitcnt){
// fill buff
buf=buffer[bufptr++];
bitcnt=8;
}
//x=(x<<1)|(buf&1);buf>>=1;
x=(x<<1)|(buf>>7);buf<<=1;
--bitcnt;
}
return x;
}
#define get_bits(xxx,n) x_get_bits(n)
#define get_bits1(xxx) x_get_bits(1)
#define skip_bits(xxx,n) x_get_bits(n)
#define skip_bits1(xxx) x_get_bits(1)
/* most is hardcoded. should extend to handle all h263 streams */
static int h263_decode_picture_header(unsigned char *b_ptr)
{
// int i;
// for(i=0;i<16;i++) printf(" %02X",b_ptr[i]); printf("\n");
buffer=b_ptr;
bufptr=bitcnt=buf=0;
/* picture header */
if (get_bits(&s->gb, 22) != 0x20){
printf("bad picture header\n");
return -1;
}
skip_bits(&s->gb, 8); /* picture timestamp */
if (get_bits1(&s->gb) != 1){
printf("bad marker\n");
return -1; /* marker */
}
if (get_bits1(&s->gb) != 0){
printf("bad h263 id\n");
return -1; /* h263 id */
}
skip_bits1(&s->gb); /* split screen off */
skip_bits1(&s->gb); /* camera off */
skip_bits1(&s->gb); /* freeze picture release off */
format = get_bits(&s->gb, 3);
if (format != 7) {
printf("h263_plus = 0 format = %d\n",format);
/* H.263v1 */
width = h263_format[format][0];
height = h263_format[format][1];
printf("%d x %d\n",width,height);
// if (!width) return -1;
printf("pict_type=%d\n",get_bits1(&s->gb));
printf("unrestricted_mv=%d\n",get_bits1(&s->gb));
#if 1
printf("SAC: %d\n",get_bits1(&s->gb));
printf("advanced prediction mode: %d\n",get_bits1(&s->gb));
printf("PB frame: %d\n",get_bits1(&s->gb));
#else
if (get_bits1(&s->gb) != 0)
return -1; /* SAC: off */
if (get_bits1(&s->gb) != 0)
return -1; /* advanced prediction mode: off */
if (get_bits1(&s->gb) != 0)
return -1; /* not PB frame */
#endif
printf("qscale=%d\n",get_bits(&s->gb, 5));
skip_bits1(&s->gb); /* Continuous Presence Multipoint mode: off */
} else {
printf("h263_plus = 1\n");
/* H.263v2 */
if (get_bits(&s->gb, 3) != 1){
printf("H.263v2 A error\n");
return -1;
}
if (get_bits(&s->gb, 3) != 6){ /* custom source format */
printf("custom source format\n");
return -1;
}
skip_bits(&s->gb, 12);
skip_bits(&s->gb, 3);
printf("pict_type=%d\n",get_bits(&s->gb, 3) + 1);
// if (s->pict_type != I_TYPE &&
// s->pict_type != P_TYPE)
// return -1;
skip_bits(&s->gb, 7);
skip_bits(&s->gb, 4); /* aspect ratio */
width = (get_bits(&s->gb, 9) + 1) * 4;
skip_bits1(&s->gb);
height = get_bits(&s->gb, 9) * 4;
printf("%d x %d\n",width,height);
//if (height == 0)
// return -1;
printf("qscale=%d\n",get_bits(&s->gb, 5));
}
/* PEI */
while (get_bits1(&s->gb) != 0) {
skip_bits(&s->gb, 8);
}
// s->f_code = 1;
// s->width = width;
// s->height = height;
return 0;
}
void demux_open_vivo(demuxer_t* demuxer){
vivo_priv_t* priv=demuxer->priv;
if(!ds_fill_buffer(demuxer->video)){
mp_msg(MSGT_DEMUX,MSGL_ERR,"VIVO: " MSGTR_MissingVideoStreamBug);
return;
}
audio_pos=0;
h263_decode_picture_header(demuxer->video->buffer);
if (vivo_param_version != -1)
priv->version = '0' + vivo_param_version;
{ sh_video_t* sh=new_sh_video(demuxer,0);
/* viv1, viv2 (for better codecs.conf) */
sh->format = mmioFOURCC('v', 'i', 'v', priv->version);
if(!sh->fps)
{
if (priv->fps)
sh->fps=priv->fps;
else
sh->fps=15.0f;
}
sh->frametime=1.0f/sh->fps;
/* XXX: FIXME: can't scale image. */
/* hotfix to disable: */
priv->disp_width = priv->width;
priv->disp_height = priv->height;
if (vivo_param_width != -1)
priv->disp_width = priv->width = vivo_param_width;
if (vivo_param_height != -1)
priv->disp_height = priv->height = vivo_param_height;
if (vivo_param_vformat != -1)
{
priv->disp_width = priv->width = h263_format[vivo_param_vformat][0];
priv->disp_height = priv->height = h263_format[vivo_param_vformat][1];
}
if (priv->disp_width)
sh->disp_w = priv->disp_width;
else
sh->disp_w = width;
if (priv->disp_height)
sh->disp_h = priv->disp_height;
else
sh->disp_h = height;
// emulate BITMAPINFOHEADER:
sh->bih=malloc(sizeof(BITMAPINFOHEADER));
memset(sh->bih,0,sizeof(BITMAPINFOHEADER));
sh->bih->biSize=40;
if (priv->width)
sh->bih->biWidth = priv->width;
else
sh->bih->biWidth = width;
if (priv->height)
sh->bih->biHeight = priv->height;
else
sh->bih->biHeight = height;
sh->bih->biPlanes=1;
sh->bih->biBitCount=24;
sh->bih->biCompression=sh->format;
sh->bih->biSizeImage=sh->bih->biWidth*sh->bih->biHeight*3;
/* insert as stream */
demuxer->video->sh=sh;
sh->ds=demuxer->video;
demuxer->video->id=0;
/* disable seeking */
demuxer->seekable = 0;
printf("VIVO Video stream %d size: display: %dx%d, codec: %ux%u\n",
demuxer->video->id, sh->disp_w, sh->disp_h, sh->bih->biWidth,
sh->bih->biHeight);
}
/* AUDIO init */
if (demuxer->audio->id >= -1){
if(!ds_fill_buffer(demuxer->audio)){
mp_msg(MSGT_DEMUX,MSGL_ERR,"VIVO: " MSGTR_MissingAudioStream);
} else
{ sh_audio_t* sh=new_sh_audio(demuxer,1);
/* Select audio codec */
if (priv->audio_codec == 0)
{
if (priv->version == '2')
priv->audio_codec = VIVO_AUDIO_SIREN;
else
priv->audio_codec = VIVO_AUDIO_G723;
}
if (vivo_param_acodec != NULL)
{
if (!strcasecmp(vivo_param_acodec, "g723"))
priv->audio_codec = VIVO_AUDIO_G723;
if (!strcasecmp(vivo_param_acodec, "siren"))
priv->audio_codec = VIVO_AUDIO_SIREN;
}
if (priv->audio_codec == VIVO_AUDIO_G723)
sh->format = 0x111;
else if (priv->audio_codec == VIVO_AUDIO_SIREN)
sh->format = 0x112;
else
{
mp_msg(MSGT_DEMUX, MSGL_ERR, "VIVO: Not support audio codec (%d)\n",
priv->audio_codec);
free_sh_audio(sh);
goto nosound;
}
// Emulate WAVEFORMATEX struct:
sh->wf=malloc(sizeof(WAVEFORMATEX));
memset(sh->wf,0,sizeof(WAVEFORMATEX));
sh->wf->wFormatTag=sh->format;
sh->wf->nChannels=1; /* 1 channels for both Siren and G.723 */
/* Set bits per sample */
if (priv->audio_codec == VIVO_AUDIO_SIREN)
sh->wf->wBitsPerSample = 16;
else
if (priv->audio_codec == VIVO_AUDIO_G723)
sh->wf->wBitsPerSample = 8;
/* Set sampling rate */
if (priv->audio_samplerate) /* got from header */
sh->wf->nSamplesPerSec = priv->audio_samplerate;
else
{
if (priv->audio_codec == VIVO_AUDIO_SIREN)
sh->wf->nSamplesPerSec = 16000;
if (priv->audio_codec == VIVO_AUDIO_G723)
sh->wf->nSamplesPerSec = 8000;
}
if (vivo_param_samplerate != -1)
sh->wf->nSamplesPerSec = vivo_param_samplerate;
/* Set audio bitrate */
if (priv->audio_bitrate) /* got from header */
sh->wf->nAvgBytesPerSec = priv->audio_bitrate;
else
{
if (priv->audio_codec == VIVO_AUDIO_SIREN)
sh->wf->nAvgBytesPerSec = 2000;
if (priv->audio_codec == VIVO_AUDIO_G723)
sh->wf->nAvgBytesPerSec = 800;
}
if (vivo_param_abitrate != -1)
sh->wf->nAvgBytesPerSec = vivo_param_abitrate;
audio_rate=sh->wf->nAvgBytesPerSec;
if (!priv->audio_bytesperblock)
{
if (priv->audio_codec == VIVO_AUDIO_SIREN)
sh->wf->nBlockAlign = 40;
if (priv->audio_codec == VIVO_AUDIO_G723)
sh->wf->nBlockAlign = 24;
}
else
sh->wf->nBlockAlign = priv->audio_bytesperblock;
if (vivo_param_bytesperblock != -1)
sh->wf->nBlockAlign = vivo_param_bytesperblock;
/*sound_ok:*/
/* insert as stream */
demuxer->audio->sh=sh;
sh->ds=demuxer->audio;
demuxer->audio->id=1;
nosound:
}
}
}
void demux_close_vivo(demuxer_t *demuxer)
{
vivo_priv_t* priv=demuxer->priv;
if (priv) {
if (priv->title)
free(priv->title);
if (priv->author)
free(priv->author);
if (priv->copyright)
free(priv->copyright);
if (priv->producer)
free(priv->producer);
free(priv);
}
return;
}
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