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updated so it uses a dblptr matrix, and works

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Original commit message from CVS:
updated so it uses a dblptr matrix, and works
This commit is contained in:
Erik Walthinsen 2002-07-24 00:02:59 +00:00
parent d49d2c52ab
commit 2168884c17
1 changed files with 47 additions and 8 deletions
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55
gst/mixmatrix/mixmatrix.c
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@ -33,7 +33,7 @@ struct _GstMixMatrix {
GstPad **srcpads;
gint srcpadalloc;
gfloat *matrix;
gfloat **matrix;
};
struct _GstMixMatrixClass {
@ -169,6 +169,31 @@ gst_mixmatrix_class_init (GstMixMatrixClass *klass)
gstelement_class->request_new_pad = gst_mixmatrix_request_new_pad;
}
static gfloat **
mixmatrix_alloc_matrix (int x,int y)
{
gfloat **matrix;
int i;
fprintf(stderr,"allocating a %dx%d matrix of floats\n",x,y);
matrix = g_new(gfloat *,x);
fprintf(stderr,"%p: ",matrix);
for (i=0;i<x;i++) {
matrix[i] = g_new(gfloat,y);
fprintf(stderr,"%p, ",matrix[i]);
}
fprintf(stderr,"\n");
return matrix;
}
static void
mixmatrix_free_matrix (gfloat **matrix,int x)
{
int i;
for (i=0;i<x;i++)
g_free(matrix[i]);
g_free(matrix);
}
static void
gst_mixmatrix_init (GstMixMatrix *mix)
{
@ -186,7 +211,7 @@ gst_mixmatrix_init (GstMixMatrix *mix)
mix->srcpads = g_new(GstPad *,mix->srcpadalloc);
// allocate a similarly sized matrix
mix->matrix = g_new(gfloat, mix->sinkpadalloc * mix->srcpadalloc);
mix->matrix = mixmatrix_alloc_matrix(mix->sinkpadalloc,mix->srcpadalloc);
// set the loop function that does all the work
gst_element_set_loop_function(GST_ELEMENT(mix), gst_mixmatrix_loop);
@ -207,9 +232,11 @@ mixmatrix_resize(GstMixMatrix *mix, int sinkpads, int srcpads)
int sinkresize = (sinkpads != mix->sinkpadalloc);
int srcresize = (srcpads != mix->srcpadalloc);
gfloat *newmatrix;
gfloat **newmatrix;
int i;
fprintf(stderr,"resizing matrix!!!!\n");
// check the sinkpads list
if (sinkresize) {
mix->sinkpads = (GstPad **)grow_ptrlist((void **)mix->sinkpads,mix->sinkpadalloc,sinkpads);
@ -224,20 +251,20 @@ mixmatrix_resize(GstMixMatrix *mix, int sinkpads, int srcpads)
// now resize the matrix if either has changed
if (sinkresize || srcresize) {
// allocate the new matrix
newmatrix = g_new(gfloat, sinkpads * srcpads);
newmatrix = mixmatrix_alloc_matrix(sinkpads,srcpads);
// if only the srcpad count changed (y axis), we can just copy
if (!sinkresize) {
memcpy(newmatrix,mix->matrix, sizeof(gfloat) * sinkpads * mix->srcpadalloc);
memcpy(newmatrix,mix->matrix,sizeof(gfloat *)*sinkpads);
// otherwise we have to copy line by line
} else {
for (i=0;i<mix->srcpadalloc;i++)
memcpy(&newmatrix[i*sinkpads], &mix->matrix[i*mix->sinkpadalloc], mix->srcpadalloc);
memcpy(newmatrix[i], mix->matrix[i], sizeof(gfloat) * mix->srcpadalloc);
}
// would signal here!
// free old matrix and replace it
g_free(mix->matrix);
mixmatrix_free_matrix(mix->matrix, mix->sinkpadalloc);
mix->matrix = newmatrix;
}
@ -385,7 +412,18 @@ gst_mixmatrix_loop (GstElement *element)
// loop through each src pad
for (j=0;j<mix->srcpadalloc;j++) {
if (mix->srcpads[j] != NULL) {
gain = mix->matrix[j + i*mix->srcpadalloc];
/*
{
int z;
fprintf(stderr,"matrix is %p: ",mix->matrix);
for (z=0;z<mix->sinkpadalloc;z++)
fprintf(stderr,"%p, ",mix->matrix[i]);
fprintf(stderr,"\n");
}
fprintf(stderr,"attempting to get gain for %dx%d\n",i,j);
*/
gain = mix->matrix[i][j];
// fprintf(stderr,"%d->%d=%0.2f ",i,j,gain);
for (k=0;k<mix->outsize;k++) {
outfloats[j][k] += infloats[i][k] * gain;
}
@ -393,6 +431,7 @@ gst_mixmatrix_loop (GstElement *element)
}
}
}
// fprintf(stderr,"\n");
for (i=0;i<mix->srcpadalloc;i++) {
if (mix->srcpads[i] != NULL) {