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api.c
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#include "api.h"
#include <stdio.h>
#include <stdlib.h>
#include <stdarg.h>
#include <assert.h>
#include <stdarg.h>
#include <string.h>
#include "global.h"
#include "putseq.h"
#include <simage_private.h>
static int
SimpegWrite_encode(const char * output_filename,
const char * parameter_filename,
SimpegWrite_error_cb error_cb,
SimpegWrite_warning_cb warning_cb,
SimpegWrite_progress_cb progress_cb,
void * cbuserdata);
static void *
SimpegWrite_begin_encode(const char * output_filename,
const char * parameter_filename,
SimpegWrite_error_cb error_cb,
SimpegWrite_warning_cb warning_cb,
SimpegWrite_progress_cb progress_cb,
void * cbuserdata,
int w, int h, int numframes, int mpeg1, int level, float bitrate);
static int
SimpegWrite_encode_bitmap(void * handle, const unsigned char * rgb_buffer);
static int
SimpegWrite_end_encode(void * handle);
/* simage movie interface */
int
mpeg2enc_movie_create(const char * filename, s_movie * movie, s_params * params)
{
void * handle;
const char * paramfile;
void * cb0, *cb1, *cb2;
void * cbdata;
int w, h, numframes;
int mpeg1;
int level;
int bitrate;
const char *mime_type;
w = h = 0;
numframes = 0;
mpeg1 = 0;
level=0;
bitrate = -1;
paramfile = NULL;
cb0 = NULL;
cb1 = NULL;
cb2 = NULL;
mime_type = NULL;
s_params_get(params,
"mime-type", S_STRING_PARAM_TYPE, &mime_type, NULL);
if (!mime_type || (strcmp(mime_type, "video/mpeg") != 0)) {
return 0;
}
/* Note 20020321 thammer:
The video/mpeg mime type is defined in RFC 2046 "MIME Part Two: Media Types".
http://www.nacs.uci.edu/indiv/ehood/MIME/2046/rfc2046.html
*/
s_params_get(params,
"parameter file", S_STRING_PARAM_TYPE, ¶mfile, NULL);
s_params_get(params,
"error callback", S_FUNCTION_PARAM_TYPE, &cb0, NULL);
s_params_get(params,
"warning callback", S_FUNCTION_PARAM_TYPE, &cb1, NULL);
s_params_get(params,
"progress callback", S_FUNCTION_PARAM_TYPE, &cb2, NULL);
s_params_get(params,
"callback userdata", S_POINTER_PARAM_TYPE, &cbdata, NULL);
s_params_get(params,
"width", S_INTEGER_PARAM_TYPE, &w, NULL);
s_params_get(params,
"height", S_INTEGER_PARAM_TYPE, &h, NULL);
s_params_get(params,
"num frames", S_INTEGER_PARAM_TYPE, &numframes, NULL);
s_params_get(params,
"mpeg1", S_BOOL_PARAM_TYPE, &mpeg1, NULL);
s_params_get(params,
"level", S_INTEGER_PARAM_TYPE, &level, NULL);
s_params_get(params,
"bitrate", S_INTEGER_PARAM_TYPE, &bitrate, NULL);
/*
Level ID
Specifies coded parameter constraints, such as bitrate, sample rate, and
maximum allowed motion vector range.
Code Meaning Typical use
---- --------------- -----------------------------------------------
4 High Level HDTV production rates: e.g. 1920 x 1080 x 30 Hz
6 High 1440 Level HDTV consumer rates: e.g. 1440 x 960 x 30 Hz
8 Main Level CCIR 601 rates: e.g. 720 x 480 x 30 Hz
10 Low Level SIF video rate: e.g. 352 x 240 x 30 Hz
*/
handle = SimpegWrite_begin_encode(filename,
paramfile,
(SimpegWrite_error_cb) cb0,
(SimpegWrite_warning_cb) cb1,
(SimpegWrite_progress_cb) cb2,
cbdata,
w, h, numframes, mpeg1, level, (float) bitrate);
if (handle == NULL) return 0;
s_params_set(s_movie_params(movie), "mpeg2enc handle", S_POINTER_PARAM_TYPE, handle, 0);
return 1;
}
int
mpeg2enc_movie_put(s_movie * movie, s_image * image, s_params * params)
{
void * handle;
if (s_params_get(s_movie_params(movie), "mpeg2enc handle", S_POINTER_PARAM_TYPE, &handle, 0)) {
return SimpegWrite_encode_bitmap(handle, s_image_data(image));
}
return 0;
}
void
mpeg2enc_movie_close(s_movie * movie)
{
void * handle;
if (s_params_get(s_movie_params(movie), "mpeg2enc handle", S_POINTER_PARAM_TYPE, &handle, 0)) {
SimpegWrite_end_encode(handle);
}
}
/* private prototypes */
static void init(simpeg_encode_context * context);
static void init_context_data(simpeg_encode_context * context);
static void readparmfile(simpeg_encode_context * context, const char *fname,
int w, int h, int numframes, int mpeg1, int level, float bitrate);
static void readquantmat(simpeg_encode_context * context);
static void cleanup(simpeg_encode_context * context);
/* fixme: statfile -> ignore */
static int
SimpegWrite_encode(const char *output_filename,
const char *parameter_filename,
SimpegWrite_error_cb error_cb,
SimpegWrite_warning_cb warning_cb,
SimpegWrite_progress_cb progress_cb,
void * cbuserdata)
{
simpeg_encode_context * context;
context = (simpeg_encode_context*) malloc(sizeof(simpeg_encode_context));
if (setjmp(context->jmpbuf)) {
/* error if we get here */
cleanup(context);
free(context);
return 0;
}
init_context_data(context);
context->SimpegWrite_error_cb_user = error_cb;
context->SimpegWrite_warning_cb_user = warning_cb;
context->SimpegWrite_progress_cb_user = progress_cb;
context->cbuserdata = cbuserdata;
context->SimpegWrite_current_frame = 0;
context->read_ppm_u444 = NULL;
context->read_ppm_v444 = NULL;
context->read_ppm_u422 = NULL;
context->read_ppm_v422 = NULL;
/* read parameter file */
readparmfile(context, parameter_filename, 0, 0, 0, 0, 0, 0.0f);
/* read quantization matrices */
readquantmat(context);
/* open output file */
if (!(context->outfile=fopen(output_filename,"wb")))
{
/* FIXME: can overflow context->errortext buffer. 20010918 mortene. */
sprintf(context->errortext,"Couldn't create output file %s",output_filename);
simpeg_encode_error(context,context->errortext);
}
init(context);
simpeg_encode_putseq(context);
cleanup(context);
free(context);
return 1; /* ok */
}
static void *
SimpegWrite_begin_encode(const char *output_filename,
const char *parameter_filename,
SimpegWrite_error_cb error_cb,
SimpegWrite_warning_cb warning_cb,
SimpegWrite_progress_cb progress_cb,
void * cbuserdata,
int w, int h, int numframes, int mpeg1, int level, float bitrate)
{
int i;
simpeg_encode_context * context;
context = (simpeg_encode_context*) malloc(sizeof(simpeg_encode_context));
init_context_data(context);
if (setjmp(context->jmpbuf)) {
/* error if we get here */
cleanup(context);
free(context);
return NULL;
}
context->SimpegWrite_error_cb_user = error_cb;
context->SimpegWrite_warning_cb_user = warning_cb;
context->SimpegWrite_progress_cb_user = progress_cb;
context->cbuserdata = cbuserdata;
context->SimpegWrite_current_frame = 0;
context->SimpegWrite_current_input_frame = 0;
context->read_ppm_u444 = NULL;
context->read_ppm_v444 = NULL;
context->read_ppm_u422 = NULL;
context->read_ppm_v422 = NULL;
context->bufbuf = NULL;
/* read parameter file */
readparmfile(context, parameter_filename, w, h, numframes, mpeg1, level, bitrate);
/* read quantization matrices */
readquantmat(context);
/* open output file */
if (!(context->outfile=fopen(output_filename,"wb")))
{
sprintf(context->errortext,"Couldn't create output file %s",output_filename);
simpeg_encode_error(context, context->errortext);
}
init(context);
SimpegWrite_putseq_begin(context);
context->bufbuf = (unsigned char **)
malloc(sizeof(unsigned char *) * context->M);
for (i=0; i<context->M; i++)
context->bufbuf[i] = NULL;
return (void*) context;
}
static int
SimpegWrite_encode_bitmap(void * handle, const unsigned char *rgb_buffer)
{
int i;
simpeg_encode_context * context = (simpeg_encode_context*) handle;
if (setjmp(context->jmpbuf)) {
/* error if we get here */
return 0;
}
if ((context->SimpegWrite_current_input_frame)%context->M == 0) {
/* encode this */
SimpegWrite_putseq_encode_bitmap((simpeg_encode_context*) handle, rgb_buffer);
/* encode the buffered ones */
for (i = 0; i < context->M; i++) {
if (context->bufbuf[i] != NULL)
SimpegWrite_putseq_encode_bitmap((simpeg_encode_context*) handle,
context->bufbuf[i]);
}
/* clean buffer */
for (i = 0; i < context->M; i++) {
if (context->bufbuf[i] != NULL) {
free(context->bufbuf[i]);
context->bufbuf[i] = NULL;
}
}
}
else {
context->bufbuf[(context->SimpegWrite_current_input_frame)%context->M] =
(unsigned char *) malloc(context->vertical_size * context->horizontal_size * 3);
memcpy(context->bufbuf[(context->SimpegWrite_current_input_frame)%context->M],
rgb_buffer, context->vertical_size * context->horizontal_size * 3);
}
context->SimpegWrite_current_input_frame++;
return 1; /* ok */
}
static int
SimpegWrite_end_encode(void * handle)
{
int i;
simpeg_encode_context * context = (simpeg_encode_context*) handle;
if (setjmp(context->jmpbuf)) {
/* error if we get here */
cleanup(context);
free(context);
return 0;
}
/* before we're done - encode any buffered frames */
for (i=0; i<context->M; i++) {
if (context->bufbuf[i] != NULL) {
SimpegWrite_putseq_encode_bitmap((simpeg_encode_context*) handle,
context->bufbuf[i]);
}
}
/* finish sequence */
SimpegWrite_putseq_end(context);
cleanup(context);
free(context);
return 1;
}
static void
cleanup(simpeg_encode_context * context)
{
int i;
/* cleanup after mallocs in readpic.c read_ppm() */
if (context->chroma_format==CHROMA444) {
/* do nothing */
}
else {
if (context->read_ppm_u444 != NULL)
free(context->read_ppm_u444);
if (context->read_ppm_v444 != NULL)
free(context->read_ppm_v444);
if (context->chroma_format==CHROMA420) {
if (context->read_ppm_u422 != NULL)
free(context->read_ppm_u422);
if (context->read_ppm_v422 != NULL)
free(context->read_ppm_v422);
}
}
if (context->outfile) {
fclose(context->outfile);
context->outfile = NULL;
}
if (context->statfile) {
fclose(context->statfile);
context->statfile = NULL;
}
if (context->mbinfo) free(context->mbinfo);
if (context->motion_data) free(context->motion_data);
if (context->blocks) free(context->blocks);
if (context->clp_org) free(context->clp_org);
for (i=0; i < 3; i++) {
if (context->newrefframe[i]) free(context->newrefframe[i]);
if (context->oldrefframe[i]) free(context->oldrefframe[i]);
if (context->predframe[i]) free(context->predframe[i]);
if (context->auxframe[i]) free(context->auxframe[i]);
if (context->auxorgframe[i]) free(context->auxorgframe[i]);
if (context->neworgframe[i]) free(context->neworgframe[i]);
if (context->oldorgframe[i]) free(context->oldorgframe[i]);
}
if (context->bufbuf != NULL) {
for (i=0; i<context->M; i++) {
if (context->bufbuf[i] != NULL) {
free(context->bufbuf[i]);
}
}
free(context->bufbuf);
context->bufbuf = NULL;
}
}
void SimpegWrite_error(simpeg_encode_context * context, const char *text, ...)
{
if (context->SimpegWrite_error_cb_user != NULL) {
char buf[256];
va_list p;
va_start(p, text);
vsprintf(buf, text, p);
va_end(p);
context->SimpegWrite_error_cb_user(context->cbuserdata, buf);
}
longjmp(context->jmpbuf, 1);
}
void SimpegWrite_warning(simpeg_encode_context * context,const char *text, ...)
{
if (context->SimpegWrite_warning_cb_user != NULL) {
char buf[256];
va_list p;
va_start(p, text);
vsprintf(buf, text, p);
va_end(p);
context->SimpegWrite_warning_cb_user(context->cbuserdata, buf);
}
}
int SimpegWrite_progress(simpeg_encode_context * context, float sub, int current_frame, int num_frames)
{
if (context->SimpegWrite_progress_cb_user != NULL)
return context->SimpegWrite_progress_cb_user(context->cbuserdata, sub, current_frame, num_frames);
else
return 1;
}
static void
init(simpeg_encode_context * context)
{
int i, size;
static int block_count_tab[3] = {6,8,12};
simpeg_encode_initbits(context);
simpeg_encode_init_fdct(context);
simpeg_encode_init_idct(context);
/* round picture dimensions to nearest multiple of 16 or 32 */
context->mb_width = (context->horizontal_size+15)/16;
context->mb_height = context->prog_seq ? (context->vertical_size+15)/16 : 2*((context->vertical_size+31)/32);
context->mb_height2 = context->fieldpic ? context->mb_height>>1 : context->mb_height; /* for field pictures */
context->width = 16*context->mb_width;
context->height = 16*context->mb_height;
context->chrom_width = (context->chroma_format==CHROMA444) ? context->width : context->width>>1;
context->chrom_height = (context->chroma_format!=CHROMA420) ? context->height : context->height>>1;
context->height2 = context->fieldpic ? context->height>>1 : context->height;
context->width2 = context->fieldpic ? context->width<<1 : context->width;
context->chrom_width2 = context->fieldpic ? context->chrom_width<<1 : context->chrom_width;
context->block_count = block_count_tab[context->chroma_format-1];
/* clip table */
if (!(context->clp = (unsigned char *)malloc(1024)))
simpeg_encode_error(context, "malloc failed\n");
context->clp_org = context->clp;
context->clp+= 384;
for (i=-384; i<640; i++)
context->clp[i] = (i<0) ? 0 : ((i>255) ? 255 : i);
for (i=0; i < 3; i++) {
size = (i==0) ? context->width*context->height : context->chrom_width*context->chrom_height;
if (!(context->newrefframe[i] = (unsigned char *)malloc(size)))
simpeg_encode_error(context, "malloc failed\n");
if (!(context->oldrefframe[i] = (unsigned char *)malloc(size)))
simpeg_encode_error(context, "malloc failed\n");
if (!(context->auxframe[i] = (unsigned char *)malloc(size)))
simpeg_encode_error(context, "malloc failed\n");
if (!(context->neworgframe[i] = (unsigned char *)malloc(size)))
simpeg_encode_error(context,"malloc failed\n");
if (!(context->oldorgframe[i] = (unsigned char *)malloc(size)))
simpeg_encode_error(context, "malloc failed\n");
if (!(context->auxorgframe[i] = (unsigned char *)malloc(size)))
simpeg_encode_error(context, "malloc failed\n");
if (!(context->predframe[i] = (unsigned char *)malloc(size)))
simpeg_encode_error(context, "malloc failed\n");
}
context->mbinfo = (struct mbinfo *)malloc(context->mb_width*context->mb_height2*sizeof(struct mbinfo));
if (!context->mbinfo)
simpeg_encode_error(context,"malloc failed\n");
context->blocks =
(short (*)[64])malloc(context->mb_width*context->mb_height2*context->block_count*sizeof(short [64]));
if (!context->blocks)
simpeg_encode_error(context, "malloc failed\n");
/* open statistics output file */
if (context->statname[0]=='-')
context->statfile = stdout;
else if (context->statname[0]=='%') /* 20010516 thammer we don't want to output to a statfile */
context->statfile = NULL;
else if (!(context->statfile = fopen(context->statname,"w")))
{
sprintf(context->errortext,"Couldn't create statistics output file %s",context->statname);
simpeg_encode_error(context,context->errortext);
}
}
void simpeg_encode_error(simpeg_encode_context * context, char *text)
{
SimpegWrite_error(context, text);
}
static void
readparmfile(simpeg_encode_context * context,
const char *fname, int width, int height, int numframes, int mpeg1, int level, float bitrate)
{
int i;
int h, m, s, f;
FILE * fd;
char line[256];
static double ratetab[8]=
{24000.0/1001.0,24.0,25.0,30000.0/1001.0,30.0,50.0,60000.0/1001.0,60.0};
if (fname) {
if (!(fd = fopen(fname,"r"))) {
sprintf(context->errortext,"Couldn't open parameter file %s",fname);
simpeg_encode_error(context, context->errortext);
}
fgets(context->id_string,254,fd);
fgets(line,254,fd); sscanf(line,"%s",context->tplorg);
fgets(line,254,fd); sscanf(line,"%s",context->tplref);
fgets(line,254,fd); sscanf(line,"%s",context->iqname);
fgets(line,254,fd); sscanf(line,"%s",context->niqname);
fgets(line,254,fd); sscanf(line,"%s",context->statname);
fgets(line,254,fd); sscanf(line,"%d",&context->inputtype);
fgets(line,254,fd); sscanf(line,"%d",&context->nframes);
if (numframes > 0) context->nframes = numframes;
fgets(line,254,fd); sscanf(line,"%d",&context->frame0);
fgets(line,254,fd); sscanf(line,"%d:%d:%d:%d",&h,&m,&s,&f);
fgets(line,254,fd); sscanf(line,"%d",&context->N);
fgets(line,254,fd); sscanf(line,"%d",&context->M);
fgets(line,254,fd); sscanf(line,"%d",&context->mpeg1);
fgets(line,254,fd); sscanf(line,"%d",&context->fieldpic);
fgets(line,254,fd); sscanf(line,"%d",&context->horizontal_size);
fgets(line,254,fd); sscanf(line,"%d",&context->vertical_size);
if (width > 0 && height > 0) {
context->horizontal_size = width;
context->vertical_size = height;
}
fgets(line,254,fd); sscanf(line,"%d",&context->aspectratio);
fgets(line,254,fd); sscanf(line,"%d",&context->frame_rate_code);
fgets(line,254,fd); sscanf(line,"%lf",&context->bit_rate);
fgets(line,254,fd); sscanf(line,"%d",&context->vbv_buffer_size);
fgets(line,254,fd); sscanf(line,"%d",&context->low_delay);
fgets(line,254,fd); sscanf(line,"%d",&context->constrparms);
fgets(line,254,fd); sscanf(line,"%d",&context->profile);
fgets(line,254,fd); sscanf(line,"%d",&context->level);
if (level>0) context->level = level;
fgets(line,254,fd); sscanf(line,"%d",&context->prog_seq);
fgets(line,254,fd); sscanf(line,"%d",&context->chroma_format);
fgets(line,254,fd); sscanf(line,"%d",&context->video_format);
fgets(line,254,fd); sscanf(line,"%d",&context->color_primaries);
fgets(line,254,fd); sscanf(line,"%d",&context->transfer_characteristics);
fgets(line,254,fd); sscanf(line,"%d",&context->matrix_coefficients);
fgets(line,254,fd); sscanf(line,"%d",&context->display_horizontal_size);
fgets(line,254,fd); sscanf(line,"%d",&context->display_vertical_size);
if (width > 0 && height > 0) {
context->display_horizontal_size = width;
context->display_vertical_size = height;
}
fgets(line,254,fd); sscanf(line,"%d",&context->dc_prec);
fgets(line,254,fd); sscanf(line,"%d",&context->topfirst);
fgets(line,254,fd); sscanf(line,"%d %d %d",
context->frame_pred_dct_tab,
context->frame_pred_dct_tab+1,
context->frame_pred_dct_tab+2);
fgets(line,254,fd); sscanf(line,"%d %d %d",
context->conceal_tab,
context->conceal_tab+1,
context->conceal_tab+2);
fgets(line,254,fd); sscanf(line,"%d %d %d",
context->qscale_tab,
context->qscale_tab+1,
context->qscale_tab+2);
fgets(line,254,fd); sscanf(line,"%d %d %d",
context->intravlc_tab,
context->intravlc_tab+1,
context->intravlc_tab+2);
fgets(line,254,fd); sscanf(line,"%d %d %d",
context->altscan_tab,
context->altscan_tab+1,
context->altscan_tab+2);
fgets(line,254,fd); sscanf(line,"%d",&context->repeatfirst);
fgets(line,254,fd); sscanf(line,"%d",&context->prog_frame);
/* intra slice interval refresh period */
fgets(line,254,fd); sscanf(line,"%d",&context->P);
fgets(line,254,fd); sscanf(line,"%d",&context->r);
fgets(line,254,fd); sscanf(line,"%lf",&context->avg_act);
fgets(line,254,fd); sscanf(line,"%d",&context->Xi);
fgets(line,254,fd); sscanf(line,"%d",&context->Xp);
fgets(line,254,fd); sscanf(line,"%d",&context->Xb);
fgets(line,254,fd); sscanf(line,"%d",&context->d0i);
fgets(line,254,fd); sscanf(line,"%d",&context->d0p);
fgets(line,254,fd); sscanf(line,"%d",&context->d0b);
if (context->N<1)
simpeg_encode_error(context, "N must be positive");
if (context->M<1)
simpeg_encode_error(context,"M must be positive");
if (context->N%context->M != 0)
simpeg_encode_error(context,"N must be an integer multiple of M");
context->motion_data = (struct motion_data *)malloc(context->M*sizeof(struct motion_data));
if (!context->motion_data)
simpeg_encode_error(context, "malloc failed\n");
for (i=0; i<context->M; i++) {
fgets(line,254,fd);
sscanf(line,"%d %d %d %d",
&context->motion_data[i].forw_hor_f_code,
&context->motion_data[i].forw_vert_f_code,
&context->motion_data[i].sxf,
&context->motion_data[i].syf);
if (i!=0) {
fgets(line,254,fd);
sscanf(line,"%d %d %d %d",
&context->motion_data[i].back_hor_f_code,
&context->motion_data[i].back_vert_f_code,
&context->motion_data[i].sxb,
&context->motion_data[i].syb);
}
}
fclose(fd);
}
else if (mpeg1) { /* fill in some default values for mpeg1 */
strcpy(context->id_string, "MPEG-1 sequence, created using simage (www.coin3d.org)");
strcpy(context->tplorg, "orgimage%d");
strcpy(context->tplref, "-");
strcpy(context->iqname, "-");
strcpy(context->niqname, "-");
strcpy(context->statname, "%");
context->inputtype = 3;
context->nframes = 10;
if (numframes > 0) context->nframes = numframes;
context->frame0 = 0;
h = m = s = f = 0;
context->N = 6;
context->M = 3;
context->mpeg1 = 1;
context->fieldpic = 0;
context->horizontal_size = 704;
context->vertical_size = 480;
if (width > 0 && height > 0) {
context->horizontal_size = width;
context->vertical_size = height;
}
context->aspectratio = 2;
context->frame_rate_code = 3;
context->bit_rate = 1152000.0;
if (bitrate > 0.0f) context->bit_rate = bitrate;
context->vbv_buffer_size = 20;
context->low_delay = 0;
context->constrparms = 0;
context->profile = 4;
context->level = 8;
if (level>0) context->level = level;
context->prog_seq = 1;
context->chroma_format = 1;
context->video_format = 2;
context->color_primaries = 5;
context->transfer_characteristics = 5;
context->matrix_coefficients = 5;
context->display_horizontal_size = 704;
context->display_vertical_size = 480;
if (width > 0 && height > 0) {
context->display_horizontal_size = width;
context->display_vertical_size = height;
}
context->dc_prec = 0;
context->topfirst = 0;
context->frame_pred_dct_tab[0] = 1;
context->frame_pred_dct_tab[1] = 1;
context->frame_pred_dct_tab[2] = 1;
context->conceal_tab[0] = 0;
context->conceal_tab[1] = 0;
context->conceal_tab[2] = 0;
context->qscale_tab[0] = 0;
context->qscale_tab[1] = 0;
context->qscale_tab[2] = 0;
context->intravlc_tab[0] = 0;
context->intravlc_tab[1] = 0;
context->intravlc_tab[2] = 0;
context->altscan_tab[0] = 0;
context->altscan_tab[1] = 0;
context->altscan_tab[2] = 0;
context->repeatfirst = 0;
context->prog_frame = 1;
context->P = 0;
context->r = 0;
context->avg_act = 0;
context->Xi = 0;
context->Xp = 0;
context->Xb = 0;
context->d0i = 0;
context->d0p = 0;
context->d0b = 0;
if (context->N<1)
simpeg_encode_error(context, "N must be positive");
if (context->M<1)
simpeg_encode_error(context,"M must be positive");
if (context->N%context->M != 0)
simpeg_encode_error(context,"N must be an integer multiple of M");
context->motion_data = (struct motion_data *)malloc(context->M*sizeof(struct motion_data));
if (!context->motion_data)
simpeg_encode_error(context, "malloc failed\n");
context->motion_data[0].forw_hor_f_code = 2;
context->motion_data[0].forw_vert_f_code = 2;
context->motion_data[0].sxf = 11;
context->motion_data[0].syf = 11;
context->motion_data[1].forw_hor_f_code = 1;
context->motion_data[1].forw_vert_f_code = 1;
context->motion_data[1].sxf = 3;
context->motion_data[1].syf = 3;
context->motion_data[1].back_hor_f_code = 1;
context->motion_data[1].back_vert_f_code = 1;
context->motion_data[1].sxb = 7;
context->motion_data[1].syb = 7;
context->motion_data[2].forw_hor_f_code = 1;
context->motion_data[2].forw_vert_f_code = 1;
context->motion_data[2].sxf = 7;
context->motion_data[2].syf = 7;
context->motion_data[2].back_hor_f_code = 1;
context->motion_data[2].back_vert_f_code = 1;
context->motion_data[2].sxb = 3;
context->motion_data[2].syb = 3;
}
else { /* fill in some default values for mpeg2 */
strcpy(context->id_string, "MPEG-2 sequence, created using simage (www.coin3d.org)");
strcpy(context->tplorg, "orgimage%d");
strcpy(context->tplref, "-");
strcpy(context->iqname, "-");
strcpy(context->niqname, "-");
strcpy(context->statname, "%");
context->inputtype = 3;
context->nframes = 10;
if (numframes > 0) context->nframes = numframes;
context->frame0 = 0;
h = m = s = f = 0;
context->N = 6;
context->M = 3;
context->mpeg1 = 0;
context->fieldpic = 0;
context->horizontal_size = 704;
context->vertical_size = 480;
if (width > 0 && height > 0) {
context->horizontal_size = width;
context->vertical_size = height;
}
context->aspectratio = 2;
context->frame_rate_code = 5;
context->bit_rate = 5000000.0;
if (bitrate > 0.0f) context->bit_rate = bitrate;
context->vbv_buffer_size = 112;
context->low_delay = 0;
context->constrparms = 0;
context->profile = 4;
context->level = 8;
if (level>0) context->level = level;
context->prog_seq = 0;
context->chroma_format = 1;
context->video_format = 2;
context->color_primaries = 5;
context->transfer_characteristics = 5;
context->matrix_coefficients = 4;
context->display_horizontal_size = 704;
context->display_vertical_size = 480;
if (width > 0 && height > 0) {
context->display_horizontal_size = width;
context->display_vertical_size = height;
}
context->dc_prec = 0;
context->topfirst = 1;
context->frame_pred_dct_tab[0] = 0;
context->frame_pred_dct_tab[1] = 0;
context->frame_pred_dct_tab[2] = 0;
context->conceal_tab[0] = 0;
context->conceal_tab[1] = 0;
context->conceal_tab[2] = 0;
context->qscale_tab[0] = 1;
context->qscale_tab[1] = 1;
context->qscale_tab[2] = 1;
context->intravlc_tab[0] = 1;
context->intravlc_tab[1] = 0;
context->intravlc_tab[2] = 0;
context->altscan_tab[0] = 0;
context->altscan_tab[1] = 0;
context->altscan_tab[2] = 0;
context->repeatfirst = 0;
context->prog_frame = 0;
context->P = 0;
context->r = 0;
context->avg_act = 0;
context->Xi = 0;
context->Xp = 0;
context->Xb = 0;
context->d0i = 0;
context->d0p = 0;
context->d0b = 0;
if (context->N<1)
simpeg_encode_error(context, "N must be positive");
if (context->M<1)
simpeg_encode_error(context,"M must be positive");
if (context->N%context->M != 0)
simpeg_encode_error(context,"N must be an integer multiple of M");
context->motion_data = (struct motion_data *)malloc(context->M*sizeof(struct motion_data));
if (!context->motion_data)
simpeg_encode_error(context, "malloc failed\n");
context->motion_data[0].forw_hor_f_code = 2;
context->motion_data[0].forw_vert_f_code = 2;
context->motion_data[0].sxf = 11;
context->motion_data[0].syf = 11;
context->motion_data[1].forw_hor_f_code = 1;
context->motion_data[1].forw_vert_f_code = 1;
context->motion_data[1].sxf = 3;
context->motion_data[1].syf = 3;
context->motion_data[1].back_hor_f_code = 1;
context->motion_data[1].back_vert_f_code = 1;
context->motion_data[1].sxb = 7;
context->motion_data[1].syb = 7;
context->motion_data[2].forw_hor_f_code = 1;
context->motion_data[2].forw_vert_f_code = 1;
context->motion_data[2].sxf = 7;
context->motion_data[2].syf = 7;
context->motion_data[2].back_hor_f_code = 1;
context->motion_data[2].back_vert_f_code = 1;
context->motion_data[2].sxb = 3;
context->motion_data[2].syb = 3;
}
/* make flags boolean (x!=0 -> x=1) */
context->mpeg1 = !!context->mpeg1;
context->fieldpic = !!context->fieldpic;
context->low_delay = !!context->low_delay;
context->constrparms = !!context->constrparms;
context->prog_seq = !!context->prog_seq;
context->topfirst = !!context->topfirst;
for (i = 0; i < 3; i++) {
context->frame_pred_dct_tab[i] = !!context->frame_pred_dct_tab[i];
context->conceal_tab[i] = !!context->conceal_tab[i];
context->qscale_tab[i] = !!context->qscale_tab[i];
context->intravlc_tab[i] = !!context->intravlc_tab[i];
context->altscan_tab[i] = !!context->altscan_tab[i];
}
context->repeatfirst = !!context->repeatfirst;
context->prog_frame = !!context->prog_frame;
/* make sure MPEG specific parameters are valid */
simpeg_encode_range_checks(context);
context->frame_rate = ratetab[context->frame_rate_code-1];
/* timecode -> frame number */
context->tc0 = h;
context->tc0 = 60*context->tc0 + m;
context->tc0 = 60*context->tc0 + s;
context->tc0 = (int)(context->frame_rate+0.5)*context->tc0 + f;
if (!context->mpeg1) {
simpeg_encode_profile_and_level_checks(context);
}
else {
/* MPEG-1 */
if (context->constrparms) {
if (context->horizontal_size > 768
|| context->vertical_size > 576
|| ((context->horizontal_size+15)/16)*((context->vertical_size+15)/16)>396
|| ((context->horizontal_size+15)/16)*((context->vertical_size+15)/16)*context->frame_rate>396*25.0
|| context->frame_rate>30.0) {
if (!context->quiet)
SimpegWrite_warning(context, "setting constrained_parameters_flag = 0");
context->constrparms = 0;
}
}
if (context->constrparms) {
for (i=0; i<context->M; i++) {
if (context->motion_data[i].forw_hor_f_code > 4) {
if (!context->quiet)
SimpegWrite_warning(context,"setting constrained_parameters_flag = 0");
context->constrparms = 0;
break;
}
if (context->motion_data[i].forw_vert_f_code > 4) {
if (!context->quiet)
SimpegWrite_warning(context,"setting constrained_parameters_flag = 0");
context->constrparms = 0;
break;
}
if (i!=0) {
if (context->motion_data[i].back_hor_f_code>4) {
if (!context->quiet)
SimpegWrite_warning(context,"setting constrained_parameters_flag = 0");
context->constrparms = 0;
break;
}
if (context->motion_data[i].back_vert_f_code>4) {
if (!context->quiet)
SimpegWrite_warning(context,"setting constrained_parameters_flag = 0");
context->constrparms = 0;
break;
}
}
}
}
}
/* relational checks */
if (context->mpeg1) {
if (!context->prog_seq) {
if (!context->quiet)
SimpegWrite_warning(context,"setting progressive_sequence = 1");
context->prog_seq = 1;
}