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/*
* Pure Data Packet module.
* Copyright (c) by Tom Schouten <pdp@zzz.kotnet.org>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*
*/
#include "pdp.h"
#include "pdp_llconv.h"
#include <quicktime/lqt.h>
#include <quicktime/colormodels.h>
#define MIN_AUDIO_INPUT 1024 /* we must have at least n chunks to play a steady sound */
#define OUTPUT_BUFFER_SIZE 128*1024 /* audio output buffer : 128k */
#define DECODE_PACKET_SIZE 16*1024 /* size of audio data decoded in one call */
typedef struct pdp_yqt_data
{
short int gain[4];
} t_pdp_yqt_data;
typedef struct pdp_yqt_struct
{
t_object x_obj;
t_float x_f;
t_outlet *x_outlet0;
t_outlet *x_outlet1;
t_outlet *x_outlet2;
t_outlet *x_outlet3; /* audio left channel */
t_outlet *x_outlet4; /* audio right channel */
int packet0;
bool initialized;
unsigned int x_vwidth;
unsigned int x_vheight;
bool loop;
unsigned char * qt_rows[3];
unsigned char * qt_frame;
quicktime_t *qt;
int qt_cmodel;
t_int x_audio; /* indicates the existence of an audio track */
t_int x_audio_channels; /* number of audio channels of first track */
t_int x_mono; /* indicates a mono audio track */
t_int x_audio_rate; /* audio rate */
t_int x_resampling_factor; /* resampling factor */
t_float *x_outbuffer; /* buffer to store audio decoded data */
t_int x_outwriteposition;
t_int x_outreadposition;
t_int x_outunread;
t_int x_outbuffersize;
t_float *x_outl;
t_float *x_outr;
t_pdp_yqt_data *state_data;
} t_pdp_yqt;
static void pdp_yqt_close(t_pdp_yqt *x)
{
if (x->initialized){
quicktime_close(x->qt);
free(x->qt_frame);
x->initialized = false;
}
}
static void pdp_yqt_open(t_pdp_yqt *x, t_symbol *name)
{
unsigned int size;
post("pdp_yqt: opening %s", name->s_name);
pdp_yqt_close(x);
x->qt = quicktime_open(name->s_name, 1, 0);
if (!(x->qt)){
post("pdp_yqt: error opening qt file");
x->initialized = false;
return;
}
if (!quicktime_has_video(x->qt)) {
post("pdp_yqt: no video stream");
quicktime_close(x->qt);
x->initialized = false;
return;
}
else if (!quicktime_supported_video(x->qt,0)) {
post("pdp_yqt: unsupported video codec\n");
quicktime_close(x->qt);
x->initialized = false;
return;
}
else
{
x->qt_cmodel = BC_YUV420P;
x->x_vwidth = quicktime_video_width(x->qt,0);
x->x_vheight = quicktime_video_height(x->qt,0);
x->qt_frame = (unsigned char*)malloc(x->x_vwidth*x->x_vheight*4);
size = x->x_vwidth * x->x_vheight;
x->qt_rows[0] = &x->qt_frame[0];
x->qt_rows[2] = &x->qt_frame[size];
x->qt_rows[1] = &x->qt_frame[size + (size>>2)];
quicktime_set_cmodel(x->qt, x->qt_cmodel);
x->initialized = true;
outlet_float(x->x_outlet2, (float)quicktime_video_length(x->qt,0));
}
if (!quicktime_has_audio(x->qt)) {
post("pdp_yqt: warning : no audio stream");
x->x_audio = 0;
return;
}
if ( quicktime_audio_tracks(x->qt) > 1 )
{
post("pdp_yqt: warning : more that one audio track, using first one");
}
if ( ( x->x_audio_channels = quicktime_track_channels(x->qt, 0) ) != 2 ) {
x->x_mono=0;
post("pdp_yqt: track 0 has %d channels", x->x_audio_channels );
post("pdp_yqt: warning : not a stereo audio track ( audio channels : %d )", x->x_audio_channels );
if ( x->x_audio_channels == 1 ) x->x_mono = 1;
else x->x_audio_channels = 2;
} else {
post("pdp_yqt: track 0 has %d channels", x->x_audio_channels );
}
if (!quicktime_supported_audio(x->qt,0)) {
post("pdp_yqt: warning : audio not supported" );
x->x_audio = 0;
} else {
x->x_audio = 1;
}
if ( x->x_audio )
{
post("pdp_yqt: using audio track 0 with %d channels", x->x_audio_channels );
post("pdp_yqt: audio data is %d bytes, %d kHz compressed with %s",
quicktime_audio_bits(x->qt, 0),
x->x_audio_rate = quicktime_sample_rate(x->qt, 0),
quicktime_audio_compressor(x->qt, 0) );
x->x_resampling_factor = ( sys_getsr() / x->x_audio_rate );
}
}
static void pdp_yqt_bang(t_pdp_yqt *x)
{
unsigned int w, h, nbpixels, packet_size;
int object, length, pos, i, j;
short int* data;
t_pdp* header;
static short int gain[4] = {0x7fff, 0x7fff, 0x7fff, 0x7fff};
if (!(x->initialized)){
//post("pdp_yqt: no qt file opened");
return;
}
w = x->x_vwidth;
h = x->x_vheight;
nbpixels = w * h;
packet_size = (nbpixels + (nbpixels >> 1)) << 1;
object = pdp_packet_new_image_YCrCb( x->x_vwidth, x->x_vheight );
header = pdp_packet_header(object);
data = (short int *) pdp_packet_data(object);
header->info.image.encoding = PDP_IMAGE_YV12;
header->info.image.width = w;
header->info.image.height = h;
length = quicktime_video_length(x->qt,0);
pos = quicktime_video_position(x->qt,0);
// post("pdp_yqt : video position : %d length =%d", pos, length );
if (pos >= length){
pos = (x->loop) ? 0 : length - 1;
// post("pdp_yqt : setting video position to %d", pos);
quicktime_set_video_position(x->qt, pos, 0);
if (x->loop)
{
// post("pdp_yqt : resetting audio position");
if ( x->x_audio ) quicktime_set_audio_position(x->qt, 0, 0);
}
}
lqt_decode_video(x->qt, x->qt_rows, 0);
switch(x->qt_cmodel){
case BC_YUV420P:
pdp_llconv(x->qt_frame, RIF_YVU__P411_U8, data, RIF_YVU__P411_S16, x->x_vwidth, x->x_vheight);
break;
case BC_YUV422:
pdp_llconv(x->qt_frame, RIF_YUYV_P____U8, data, RIF_YVU__P411_S16, x->x_vwidth, x->x_vheight);
break;
case BC_RGB888:
pdp_llconv(x->qt_frame, RIF_RGB__P____U8, data, RIF_YVU__P411_S16, x->x_vwidth, x->x_vheight);
break;
default:
post("pdp_yqt : error on decode: unkown colour model");
break;
}
outlet_float(x->x_outlet1, (float)pos);
pdp_packet_pass_if_valid(x->x_outlet0, &object);
// fills in the audio buffer with a chunk if necessary
if ( x->x_audio && x->x_outunread < MIN_AUDIO_INPUT )
{
int csize, rsize;
// watch remaining size
rsize = (int ) ( quicktime_audio_length(x->qt, 0) - quicktime_audio_position(x->qt, 0) );
csize = ( rsize < DECODE_PACKET_SIZE ) ? rsize : DECODE_PACKET_SIZE;
// post("pdp_yqt : decode one chunk (size=%d)", csize );
if ( ( quicktime_decode_audio(x->qt, NULL, x->x_outl, csize, 1) <0 ) ||
( !x->x_mono && ( quicktime_decode_audio(x->qt, NULL, x->x_outl, csize, 2) <0 ) ) )
{
post("pdp_yqt : could not decode audio data" );
} else {
for ( i=0; i<csize; i++ )
{
if ( x->x_outunread >= x->x_outbuffersize-2 )
{
post( "pdp_yqt: decode audio : too much input ... ignored" );
continue;
}
for ( j=0; j<x->x_resampling_factor; j++ )
{
*(x->x_outbuffer+x->x_outwriteposition) = x->x_outl[i];
x->x_outwriteposition = (x->x_outwriteposition + 1)%x->x_outbuffersize;
*(x->x_outbuffer+x->x_outwriteposition) =
((x->x_mono)? x->x_outl[i] : x->x_outr[i] );
x->x_outwriteposition = (x->x_outwriteposition + 1)%x->x_outbuffersize;
x->x_outunread+=2;
}
}
}
}
}
static void pdp_yqt_loop(t_pdp_yqt *x, t_floatarg loop)
{
int loopi = (int)loop;
x->loop = !(loopi == 0);
}
static void pdp_yqt_frame_cold(t_pdp_yqt *x, t_floatarg frameindex)
{
int frame = (int)frameindex;
int length;
if (!(x->initialized)) return;
length = quicktime_video_length(x->qt,0);
frame = (frame >= length) ? length-1 : frame;
frame = (frame < 0) ? 0 : frame;
// post("pdp_yqt : frame cold : setting video position to : %d", frame );
quicktime_set_video_position(x->qt, frame, 0);
}
static void pdp_yqt_frame(t_pdp_yqt *x, t_floatarg frameindex)
{
// pdp_yqt_frame_cold(x, frameindex);
pdp_yqt_bang(x);
}
static void pdp_yqt_gain(t_pdp_yqt *x, t_floatarg f)
{
int i;
short int g;
float bound = (float)0x7fff;
f *= (float)0x7fff;
f = (f>bound) ? bound : f;
f = (f<-bound) ? -bound : f;
g = (short int)f;
for (i=0; i<4; i++) x->state_data->gain[i] = g;
}
static void pdp_yqt_free(t_pdp_yqt *x)
{
free (x->state_data);
pdp_yqt_close(x);
freebytes(x->x_outbuffer, OUTPUT_BUFFER_SIZE*sizeof(t_float));
freebytes(x->x_outl, DECODE_PACKET_SIZE*sizeof(t_float));
freebytes(x->x_outr, DECODE_PACKET_SIZE*sizeof(t_float));
}
t_class *pdp_yqt_class;
void *pdp_yqt_new(void)
{
t_pdp_yqt *x = (t_pdp_yqt *)pd_new(pdp_yqt_class);
inlet_new(&x->x_obj, &x->x_obj.ob_pd, gensym("float"), gensym("frame_cold"));
inlet_new(&x->x_obj, &x->x_obj.ob_pd, gensym("float"), gensym("gain"));
x->x_outlet0 = outlet_new(&x->x_obj, &s_anything);
x->x_outlet1 = outlet_new(&x->x_obj, &s_float);
x->x_outlet2 = outlet_new(&x->x_obj, &s_float);
x->x_outlet3 = outlet_new(&x->x_obj, &s_signal); /* audio left channel */
x->x_outlet4 = outlet_new(&x->x_obj, &s_signal); /* audio right channel */
x->packet0 = -1;
x->initialized = false;
x->loop = false;
x->state_data = (t_pdp_yqt_data *)malloc(sizeof(t_pdp_yqt_data));
pdp_yqt_gain(x, 1.0f);
// allocate audio buffers
x->x_outbuffersize = OUTPUT_BUFFER_SIZE;
x->x_outl = (t_float*) getbytes(DECODE_PACKET_SIZE*sizeof(t_float));
x->x_outr = (t_float*) getbytes(DECODE_PACKET_SIZE*sizeof(t_float));
x->x_outbuffer = (t_float*) getbytes(OUTPUT_BUFFER_SIZE*sizeof(t_float));
if ( !x->x_outl || !x->x_outr || !x->x_outbuffer )
{
post( "mp3amp~: could not allocate buffers" );
return NULL;
}
memset( x->x_outl, 0x0, DECODE_PACKET_SIZE*sizeof(t_float) );
memset( x->x_outr, 0x0, DECODE_PACKET_SIZE*sizeof(t_float) );
memset( x->x_outbuffer, 0x0, OUTPUT_BUFFER_SIZE*sizeof(t_float) );
x->x_outreadposition = 0;
x->x_outwriteposition = 0;
x->x_outunread = 0;
return (void *)x;
}
static t_int *pdp_yqt_perform(t_int *w)
{
t_pdp_yqt *x = (t_pdp_yqt*) (w[1]);
t_float *out1 = (t_float *)(w[2]);
t_float *out2 = (t_float *)(w[3]);
int n = (int)(w[4]);
int ret;
int i = 0;
while( n-- )
{
if ( x->x_audio && x->x_outunread > 0 )
{
*out1++=*(x->x_outbuffer+x->x_outreadposition);
x->x_outreadposition = (x->x_outreadposition + 1)%x->x_outbuffersize;
*out2++=*(x->x_outbuffer+x->x_outreadposition);
x->x_outreadposition = (x->x_outreadposition + 1)%x->x_outbuffersize;
x->x_outunread-=2;
}
else
{
*out1++=0.;
*out2++=0.;
}
}
return (w+5);
}
static void pdp_yqt_dsp(t_pdp_yqt *x, t_signal **sp)
{
dsp_add(pdp_yqt_perform, 4, x, sp[1]->s_vec, sp[2]->s_vec, sp[1]->s_n);
}
#ifdef __cplusplus
extern "C"
{
#endif
void pdp_yqt_setup(void)
{
pdp_yqt_class = class_new(gensym("pdp_yqt"), (t_newmethod)pdp_yqt_new,
(t_method)pdp_yqt_free, sizeof(t_pdp_yqt), 0, A_NULL);
class_addmethod(pdp_yqt_class, (t_method)pdp_yqt_bang, gensym("bang"), A_NULL);
class_addmethod(pdp_yqt_class, (t_method)pdp_yqt_close, gensym("close"), A_NULL);
class_addmethod(pdp_yqt_class, (t_method)pdp_yqt_open, gensym("open"), A_SYMBOL, A_NULL);
class_addmethod(pdp_yqt_class, (t_method)pdp_yqt_loop, gensym("loop"), A_DEFFLOAT, A_NULL);
class_addfloat (pdp_yqt_class, (t_method)pdp_yqt_frame);
class_addmethod(pdp_yqt_class, (t_method)pdp_yqt_frame_cold, gensym("frame_cold"), A_FLOAT, A_NULL);
class_addmethod(pdp_yqt_class, (t_method)pdp_yqt_gain, gensym("gain"), A_FLOAT, A_NULL);
class_addmethod(pdp_yqt_class, nullfn, gensym("signal"), 0);
class_addmethod(pdp_yqt_class, (t_method)pdp_yqt_dsp, gensym("dsp"), 0);
}
#ifdef __cplusplus
}
#endif
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