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https://github.com/python/cpython.git
synced 2024-12-15 21:04:00 +08:00
965 lines
20 KiB
C
965 lines
20 KiB
C
/* SV module -- interface to the Indigo video board */
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/* WARNING! This module is for hardware that we don't have any more,
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so it hasn't been tested. It has been converted to the new coding
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style, and it is possible that this conversion has broken something
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-- user beware! */
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#include <sys/time.h>
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#include <svideo.h>
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#include "Python.h"
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#include "compile.h"
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#include "yuv.h" /* for YUV conversion functions */
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typedef struct {
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PyObject_HEAD
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SV_nodeP ob_svideo;
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svCaptureInfo ob_info;
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} svobject;
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typedef struct {
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PyObject_HEAD
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void *ob_capture;
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int ob_mustunlock;
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svCaptureInfo ob_info;
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svobject *ob_svideo;
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} captureobject;
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static PyObject *SvError; /* exception sv.error */
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static PyObject *newcaptureobject(svobject *, void *, int);
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/* Set a SV-specific error from svideo_errno and return NULL */
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static PyObject *
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sv_error(void)
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{
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PyErr_SetString(SvError, svStrerror(svideo_errno));
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return NULL;
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}
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static PyObject *
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svc_conversion(captureobject *self, PyObject *args, void (*function)(), float factor)
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{
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PyObject *output;
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int invert;
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char* outstr;
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if (!PyArg_Parse(args, "i", &invert))
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return NULL;
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if (!(output = PyString_FromStringAndSize(
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NULL,
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(int)(self->ob_info.width * self->ob_info.height * factor))))
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{
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return NULL;
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}
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if (!(outstr = PyString_AsString(output))) {
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Py_DECREF(output);
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return NULL;
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}
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(*function)((boolean)invert, self->ob_capture,
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outstr,
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self->ob_info.width, self->ob_info.height);
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return output;
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}
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/*
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* 3 functions to convert from Starter Video YUV 4:1:1 format to
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* Compression Library 4:2:2 Duplicate Chroma format.
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*/
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static PyObject *
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svc_YUVtoYUV422DC(captureobject *self, PyObject *args)
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{
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if (self->ob_info.format != SV_YUV411_FRAMES) {
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PyErr_SetString(SvError, "data has bad format");
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return NULL;
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}
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return svc_conversion(self, args, yuv_sv411_to_cl422dc, 2.0);
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}
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static PyObject *
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svc_YUVtoYUV422DC_quarter(captureobject *self, PyObject *args)
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{
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if (self->ob_info.format != SV_YUV411_FRAMES) {
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PyErr_SetString(SvError, "data has bad format");
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return NULL;
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}
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return svc_conversion(self, args,
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yuv_sv411_to_cl422dc_quartersize, 0.5);
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}
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static PyObject *
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svc_YUVtoYUV422DC_sixteenth(captureobject *self, PyObject *args)
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{
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if (self->ob_info.format != SV_YUV411_FRAMES) {
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PyErr_SetString(SvError, "data has bad format");
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return NULL;
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}
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return svc_conversion(self, args,
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yuv_sv411_to_cl422dc_sixteenthsize, 0.125);
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}
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static PyObject *
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svc_YUVtoRGB(captureobject *self, PyObject *args)
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{
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switch (self->ob_info.format) {
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case SV_YUV411_FRAMES:
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case SV_YUV411_FRAMES_AND_BLANKING_BUFFER:
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break;
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default:
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PyErr_SetString(SvError, "data had bad format");
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return NULL;
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}
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return svc_conversion(self, args, svYUVtoRGB, (float) sizeof(long));
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}
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static PyObject *
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svc_RGB8toRGB32(captureobject *self, PyObject *args)
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{
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if (self->ob_info.format != SV_RGB8_FRAMES) {
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PyErr_SetString(SvError, "data has bad format");
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return NULL;
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}
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return svc_conversion(self, args, svRGB8toRGB32, (float) sizeof(long));
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}
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static PyObject *
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svc_InterleaveFields(captureobject *self, PyObject *args)
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{
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if (self->ob_info.format != SV_RGB8_FRAMES) {
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PyErr_SetString(SvError, "data has bad format");
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return NULL;
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}
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return svc_conversion(self, args, svInterleaveFields, 1.0);
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}
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static PyObject *
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svc_GetFields(captureobject *self, PyObject *args)
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{
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PyObject *f1 = NULL;
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PyObject *f2 = NULL;
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PyObject *ret = NULL;
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int fieldsize;
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char* obcapture;
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if (self->ob_info.format != SV_RGB8_FRAMES) {
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PyErr_SetString(SvError, "data has bad format");
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return NULL;
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}
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fieldsize = self->ob_info.width * self->ob_info.height / 2;
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obcapture = (char*)self->ob_capture;
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if (!(f1 = PyString_FromStringAndSize(obcapture, fieldsize)))
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goto finally;
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if (!(f2 = PyString_FromStringAndSize(obcapture + fieldsize,
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fieldsize)))
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goto finally;
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ret = Py_BuildValue("(OO)", f1, f2);
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finally:
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Py_XDECREF(f1);
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Py_XDECREF(f2);
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return ret;
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}
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static PyObject *
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svc_UnlockCaptureData(captureobject *self, PyObject *args)
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{
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if (!PyArg_Parse(args, ""))
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return NULL;
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if (!self->ob_mustunlock) {
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PyErr_SetString(SvError, "buffer should not be unlocked");
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return NULL;
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}
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if (svUnlockCaptureData(self->ob_svideo->ob_svideo, self->ob_capture))
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return sv_error();
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self->ob_mustunlock = 0;
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Py_INCREF(Py_None);
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return Py_None;
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}
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#ifdef USE_GL
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#include <gl.h>
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static PyObject *
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svc_lrectwrite(captureobject *self, PyObject *args)
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{
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Screencoord x1, x2, y1, y2;
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if (!PyArg_Parse(args, "(hhhh)", &x1, &x2, &y1, &y2))
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return NULL;
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lrectwrite(x1, x2, y1, y2, (unsigned long *) self->ob_capture);
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Py_INCREF(Py_None);
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return Py_None;
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}
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#endif
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static PyObject *
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svc_writefile(captureobject *self, PyObject *args)
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{
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PyObject *file;
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int size;
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FILE* fp;
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if (!PyArg_Parse(args, "O", &file))
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return NULL;
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if (!PyFile_Check(file)) {
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PyErr_SetString(SvError, "not a file object");
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return NULL;
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}
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if (!(fp = PyFile_AsFile(file)))
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return NULL;
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size = self->ob_info.width * self->ob_info.height;
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if (fwrite(self->ob_capture, sizeof(long), size, fp) != size) {
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PyErr_SetString(SvError, "writing failed");
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return NULL;
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}
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Py_INCREF(Py_None);
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return Py_None;
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}
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static PyObject *
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svc_FindVisibleRegion(captureobject *self, PyObject *args)
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{
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void *visible;
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int width;
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if (!PyArg_Parse(args, ""))
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return NULL;
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if (svFindVisibleRegion(self->ob_svideo->ob_svideo,
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self->ob_capture, &visible,
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self->ob_info.width))
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return sv_error();
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if (visible == NULL) {
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PyErr_SetString(SvError, "data in wrong format");
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return NULL;
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}
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return newcaptureobject(self->ob_svideo, visible, 0);
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}
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static PyMethodDef capture_methods[] = {
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{"YUVtoRGB", (PyCFunction)svc_YUVtoRGB},
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{"RGB8toRGB32", (PyCFunction)svc_RGB8toRGB32},
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{"InterleaveFields", (PyCFunction)svc_InterleaveFields},
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{"UnlockCaptureData", (PyCFunction)svc_UnlockCaptureData},
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{"FindVisibleRegion", (PyCFunction)svc_FindVisibleRegion},
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{"GetFields", (PyCFunction)svc_GetFields},
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{"YUVtoYUV422DC", (PyCFunction)svc_YUVtoYUV422DC},
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{"YUVtoYUV422DC_quarter",(PyCFunction)svc_YUVtoYUV422DC_quarter},
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{"YUVtoYUV422DC_sixteenth",(PyCFunction)svc_YUVtoYUV422DC_sixteenth},
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#ifdef USE_GL
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{"lrectwrite", (PyCFunction)svc_lrectwrite},
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#endif
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{"writefile", (PyCFunction)svc_writefile},
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{NULL, NULL} /* sentinel */
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};
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static void
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capture_dealloc(captureobject *self)
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{
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if (self->ob_capture != NULL) {
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if (self->ob_mustunlock)
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(void)svUnlockCaptureData(self->ob_svideo->ob_svideo,
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self->ob_capture);
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self->ob_capture = NULL;
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Py_DECREF(self->ob_svideo);
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self->ob_svideo = NULL;
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}
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PyObject_Del(self);
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}
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static PyObject *
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capture_getattr(svobject *self, char *name)
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{
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return Py_FindMethod(capture_methods, (PyObject *)self, name);
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}
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PyTypeObject Capturetype = {
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PyObject_HEAD_INIT(&PyType_Type)
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0, /*ob_size*/
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"capture", /*tp_name*/
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sizeof(captureobject), /*tp_size*/
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0, /*tp_itemsize*/
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/* methods */
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(destructor)capture_dealloc, /*tp_dealloc*/
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0, /*tp_print*/
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(getattrfunc)capture_getattr, /*tp_getattr*/
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0, /*tp_setattr*/
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0, /*tp_compare*/
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0, /*tp_repr*/
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};
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static PyObject *
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newcaptureobject(svobject *self, void *ptr, int mustunlock)
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{
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captureobject *p;
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p = PyObject_New(captureobject, &Capturetype);
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if (p == NULL)
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return NULL;
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p->ob_svideo = self;
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Py_INCREF(self);
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p->ob_capture = ptr;
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p->ob_mustunlock = mustunlock;
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p->ob_info = self->ob_info;
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return (PyObject *) p;
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}
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static PyObject *
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sv_GetCaptureData(svobject *self, PyObject *args)
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{
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void *ptr;
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long fieldID;
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PyObject *res, *c;
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if (!PyArg_Parse(args, ""))
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return NULL;
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if (svGetCaptureData(self->ob_svideo, &ptr, &fieldID))
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return sv_error();
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if (ptr == NULL) {
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PyErr_SetString(SvError, "no data available");
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return NULL;
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}
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c = newcaptureobject(self, ptr, 1);
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if (c == NULL)
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return NULL;
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res = Py_BuildValue("(Oi)", c, fieldID);
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Py_DECREF(c);
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return res;
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}
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static PyObject *
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sv_BindGLWindow(svobject *self, PyObject *args)
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{
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long wid;
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int mode;
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if (!PyArg_Parse(args, "(ii)", &wid, &mode))
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return NULL;
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if (svBindGLWindow(self->ob_svideo, wid, mode))
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return sv_error();
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Py_INCREF(Py_None);
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return Py_None;
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}
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static PyObject *
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sv_EndContinuousCapture(svobject *self, PyObject *args)
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{
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if (!PyArg_Parse(args, ""))
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return NULL;
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if (svEndContinuousCapture(self->ob_svideo))
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return sv_error();
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Py_INCREF(Py_None);
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return Py_None;
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}
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static PyObject *
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sv_IsVideoDisplayed(svobject *self, PyObject *args)
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{
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int v;
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if (!PyArg_Parse(args, ""))
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return NULL;
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v = svIsVideoDisplayed(self->ob_svideo);
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if (v == -1)
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return sv_error();
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return PyInt_FromLong((long) v);
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}
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static PyObject *
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sv_OutputOffset(svobject *self, PyObject *args)
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{
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int x_offset;
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int y_offset;
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if (!PyArg_Parse(args, "(ii)", &x_offset, &y_offset))
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return NULL;
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if (svOutputOffset(self->ob_svideo, x_offset, y_offset))
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return sv_error();
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Py_INCREF(Py_None);
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return Py_None;
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}
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static PyObject *
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sv_PutFrame(svobject *self, PyObject *args)
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{
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char *buffer;
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if (!PyArg_Parse(args, "s", &buffer))
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return NULL;
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if (svPutFrame(self->ob_svideo, buffer))
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return sv_error();
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Py_INCREF(Py_None);
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return Py_None;
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}
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static PyObject *
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sv_QuerySize(svobject *self, PyObject *args)
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{
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int w;
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int h;
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int rw;
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int rh;
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if (!PyArg_Parse(args, "(ii)", &w, &h))
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return NULL;
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if (svQuerySize(self->ob_svideo, w, h, &rw, &rh))
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return sv_error();
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return Py_BuildValue("(ii)", (long) rw, (long) rh);
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}
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static PyObject *
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sv_SetSize(svobject *self, PyObject *args)
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{
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int w;
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int h;
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if (!PyArg_Parse(args, "(ii)", &w, &h))
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return NULL;
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|
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if (svSetSize(self->ob_svideo, w, h))
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return sv_error();
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|
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Py_INCREF(Py_None);
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return Py_None;
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}
|
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|
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static PyObject *
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sv_SetStdDefaults(svobject *self, PyObject *args)
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{
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|
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if (!PyArg_Parse(args, ""))
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return NULL;
|
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|
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if (svSetStdDefaults(self->ob_svideo))
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return sv_error();
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|
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Py_INCREF(Py_None);
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return Py_None;
|
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}
|
|
|
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static PyObject *
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sv_UseExclusive(svobject *self, PyObject *args)
|
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{
|
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boolean onoff;
|
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int mode;
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|
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if (!PyArg_Parse(args, "(ii)", &onoff, &mode))
|
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return NULL;
|
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|
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if (svUseExclusive(self->ob_svideo, onoff, mode))
|
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return sv_error();
|
|
|
|
Py_INCREF(Py_None);
|
|
return Py_None;
|
|
}
|
|
|
|
static PyObject *
|
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sv_WindowOffset(svobject *self, PyObject *args)
|
|
{
|
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int x_offset;
|
|
int y_offset;
|
|
|
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if (!PyArg_Parse(args, "(ii)", &x_offset, &y_offset))
|
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return NULL;
|
|
|
|
if (svWindowOffset(self->ob_svideo, x_offset, y_offset))
|
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return sv_error();
|
|
|
|
Py_INCREF(Py_None);
|
|
return Py_None;
|
|
}
|
|
|
|
static PyObject *
|
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sv_CaptureBurst(svobject *self, PyObject *args)
|
|
{
|
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int bytes, i;
|
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svCaptureInfo info;
|
|
void *bitvector = NULL;
|
|
PyObject *videodata = NULL;
|
|
PyObject *bitvecobj = NULL;
|
|
PyObject *res = NULL;
|
|
static PyObject *evenitem, *odditem;
|
|
|
|
if (!PyArg_Parse(args, "(iiiii)", &info.format,
|
|
&info.width, &info.height,
|
|
&info.size, &info.samplingrate))
|
|
return NULL;
|
|
|
|
switch (info.format) {
|
|
case SV_RGB8_FRAMES:
|
|
bitvector = malloc(SV_BITVEC_SIZE(info.size));
|
|
break;
|
|
case SV_YUV411_FRAMES_AND_BLANKING_BUFFER:
|
|
break;
|
|
default:
|
|
PyErr_SetString(SvError, "illegal format specified");
|
|
return NULL;
|
|
}
|
|
|
|
if (svQueryCaptureBufferSize(self->ob_svideo, &info, &bytes)) {
|
|
res = sv_error();
|
|
goto finally;
|
|
}
|
|
|
|
if (!(videodata = PyString_FromStringAndSize(NULL, bytes)))
|
|
goto finally;
|
|
|
|
/* XXX -- need to do something about the bitvector */
|
|
{
|
|
char* str = PyString_AsString(videodata);
|
|
if (!str)
|
|
goto finally;
|
|
|
|
if (svCaptureBurst(self->ob_svideo, &info, str, bitvector)) {
|
|
res = sv_error();
|
|
goto finally;
|
|
}
|
|
}
|
|
|
|
if (bitvector) {
|
|
if (evenitem == NULL) {
|
|
if (!(evenitem = PyInt_FromLong(0)))
|
|
goto finally;
|
|
}
|
|
if (odditem == NULL) {
|
|
if (!(odditem = PyInt_FromLong(1)))
|
|
goto finally;
|
|
}
|
|
if (!(bitvecobj = PyTuple_New(2 * info.size)))
|
|
goto finally;
|
|
|
|
for (i = 0; i < 2 * info.size; i++) {
|
|
int sts;
|
|
|
|
if (SV_GET_FIELD(bitvector, i) == SV_EVEN_FIELD) {
|
|
Py_INCREF(evenitem);
|
|
sts = PyTuple_SetItem(bitvecobj, i, evenitem);
|
|
} else {
|
|
Py_INCREF(odditem);
|
|
sts = PyTuple_SetItem(bitvecobj, i, odditem);
|
|
}
|
|
if (sts < 0)
|
|
goto finally;
|
|
}
|
|
} else {
|
|
bitvecobj = Py_None;
|
|
Py_INCREF(Py_None);
|
|
}
|
|
|
|
res = Py_BuildValue("((iiiii)OO)", info.format,
|
|
info.width, info.height,
|
|
info.size, info.samplingrate,
|
|
videodata, bitvecobj);
|
|
|
|
finally:
|
|
if (bitvector)
|
|
free(bitvector);
|
|
|
|
Py_XDECREF(videodata);
|
|
Py_XDECREF(bitvecobj);
|
|
return res;
|
|
}
|
|
|
|
static PyObject *
|
|
sv_CaptureOneFrame(svobject *self, PyObject *args)
|
|
{
|
|
svCaptureInfo info;
|
|
int format, width, height;
|
|
int bytes;
|
|
PyObject *videodata = NULL;
|
|
PyObject *res = NULL;
|
|
char *str;
|
|
|
|
if (!PyArg_Parse(args, "(iii)", &format, &width, &height))
|
|
return NULL;
|
|
|
|
info.format = format;
|
|
info.width = width;
|
|
info.height = height;
|
|
info.size = 0;
|
|
info.samplingrate = 0;
|
|
if (svQueryCaptureBufferSize(self->ob_svideo, &info, &bytes))
|
|
return sv_error();
|
|
|
|
if (!(videodata = PyString_FromStringAndSize(NULL, bytes)))
|
|
return NULL;
|
|
|
|
str = PyString_AsString(videodata);
|
|
if (!str)
|
|
goto finally;
|
|
|
|
if (svCaptureOneFrame(self->ob_svideo, format, &width, &height, str)) {
|
|
res = sv_error();
|
|
goto finally;
|
|
}
|
|
|
|
res = Py_BuildValue("(iiO)", width, height, videodata);
|
|
|
|
finally:
|
|
Py_XDECREF(videodata);
|
|
return res;
|
|
}
|
|
|
|
static PyObject *
|
|
sv_InitContinuousCapture(svobject *self, PyObject *args)
|
|
{
|
|
svCaptureInfo info;
|
|
|
|
if (!PyArg_Parse(args, "(iiiii)", &info.format,
|
|
&info.width, &info.height,
|
|
&info.size, &info.samplingrate))
|
|
return NULL;
|
|
|
|
if (svInitContinuousCapture(self->ob_svideo, &info))
|
|
return sv_error();
|
|
|
|
self->ob_info = info;
|
|
|
|
return Py_BuildValue("(iiiii)", info.format, info.width, info.height,
|
|
info.size, info.samplingrate);
|
|
}
|
|
|
|
static PyObject *
|
|
sv_LoadMap(svobject *self, PyObject *args)
|
|
{
|
|
PyObject *rgb;
|
|
PyObject *res = NULL;
|
|
rgb_tuple *mapp = NULL;
|
|
int maptype;
|
|
int i, j; /* indices */
|
|
|
|
if (!PyArg_Parse(args, "(iO)", &maptype, &rgb))
|
|
return NULL;
|
|
|
|
if (!PyList_Check(rgb) || PyList_Size(rgb) != 256) {
|
|
PyErr_BadArgument();
|
|
return NULL;
|
|
}
|
|
|
|
if (!(mapp = PyMem_NEW(rgb_tuple, 256)))
|
|
return PyErr_NoMemory();
|
|
|
|
for (i = 0; i < 256; i++) {
|
|
PyObject* v = PyList_GetItem(rgb, i);
|
|
if (!v)
|
|
goto finally;
|
|
|
|
if (!PyTuple_Check(v) || PyTuple_Size(v) != 3) {
|
|
PyErr_BadArgument();
|
|
goto finally;
|
|
}
|
|
for (j = 0; j < 3; j++) {
|
|
PyObject* cell = PyTuple_GetItem(v, j);
|
|
if (!cell)
|
|
goto finally;
|
|
|
|
if (!PyInt_Check(cell)) {
|
|
PyErr_BadArgument();
|
|
goto finally;
|
|
}
|
|
switch (j) {
|
|
case 0: mapp[i].red = PyInt_AsLong(cell); break;
|
|
case 1: mapp[i].blue = PyInt_AsLong(cell); break;
|
|
case 2: mapp[i].green = PyInt_AsLong(cell); break;
|
|
}
|
|
if (PyErr_Occurred())
|
|
goto finally;
|
|
}
|
|
}
|
|
|
|
if (svLoadMap(self->ob_svideo, maptype, mapp)) {
|
|
res = sv_error();
|
|
goto finally;
|
|
}
|
|
|
|
Py_INCREF(Py_None);
|
|
res = Py_None;
|
|
|
|
finally:
|
|
PyMem_DEL(mapp);
|
|
return res;
|
|
}
|
|
|
|
static PyObject *
|
|
sv_CloseVideo(svobject *self, PyObject *args)
|
|
{
|
|
if (!PyArg_Parse(args, ""))
|
|
return NULL;
|
|
|
|
if (svCloseVideo(self->ob_svideo))
|
|
return sv_error();
|
|
|
|
self->ob_svideo = NULL;
|
|
Py_INCREF(Py_None);
|
|
return Py_None;
|
|
}
|
|
|
|
static PyObject *
|
|
doParams(svobject *self, PyObject *args,
|
|
int (*func)(SV_nodeP, long *, int), int modified)
|
|
{
|
|
PyObject *list;
|
|
PyObject *res = NULL;
|
|
long *PVbuffer = NULL;
|
|
long length;
|
|
int i;
|
|
|
|
if (!PyArg_Parse(args, "O", &list))
|
|
return NULL;
|
|
|
|
if (!PyList_Check(list)) {
|
|
PyErr_BadArgument();
|
|
return NULL;
|
|
}
|
|
|
|
if ((length = PyList_Size(list)) < 0)
|
|
return NULL;
|
|
|
|
PVbuffer = PyMem_NEW(long, length);
|
|
if (PVbuffer == NULL)
|
|
return PyErr_NoMemory();
|
|
|
|
for (i = 0; i < length; i++) {
|
|
PyObject *v = PyList_GetItem(list, i);
|
|
if (!v)
|
|
goto finally;
|
|
|
|
if (!PyInt_Check(v)) {
|
|
PyErr_BadArgument();
|
|
goto finally;
|
|
}
|
|
PVbuffer[i] = PyInt_AsLong(v);
|
|
/* can't just test the return value, because what if the
|
|
value was -1?!
|
|
*/
|
|
if (PVbuffer[i] == -1 && PyErr_Occurred())
|
|
goto finally;
|
|
}
|
|
|
|
if ((*func)(self->ob_svideo, PVbuffer, length)) {
|
|
res = sv_error();
|
|
goto finally;
|
|
}
|
|
|
|
if (modified) {
|
|
for (i = 0; i < length; i++) {
|
|
PyObject* v = PyInt_FromLong(PVbuffer[i]);
|
|
if (!v || PyList_SetItem(list, i, v) < 0)
|
|
goto finally;
|
|
}
|
|
}
|
|
|
|
Py_INCREF(Py_None);
|
|
res = Py_None;
|
|
|
|
finally:
|
|
PyMem_DEL(PVbuffer);
|
|
return res;
|
|
}
|
|
|
|
static PyObject *
|
|
sv_GetParam(PyObject *self, PyObject *args)
|
|
{
|
|
return doParams(self, args, svGetParam, 1);
|
|
}
|
|
|
|
static PyObject *
|
|
sv_GetParamRange(PyObject *self, PyObject *args)
|
|
{
|
|
return doParams(self, args, svGetParamRange, 1);
|
|
}
|
|
|
|
static PyObject *
|
|
sv_SetParam(PyObject *self, PyObject *args)
|
|
{
|
|
return doParams(self, args, svSetParam, 0);
|
|
}
|
|
|
|
static PyMethodDef svideo_methods[] = {
|
|
{"BindGLWindow", (PyCFunction)sv_BindGLWindow},
|
|
{"EndContinuousCapture",(PyCFunction)sv_EndContinuousCapture},
|
|
{"IsVideoDisplayed", (PyCFunction)sv_IsVideoDisplayed},
|
|
{"OutputOffset", (PyCFunction)sv_OutputOffset},
|
|
{"PutFrame", (PyCFunction)sv_PutFrame},
|
|
{"QuerySize", (PyCFunction)sv_QuerySize},
|
|
{"SetSize", (PyCFunction)sv_SetSize},
|
|
{"SetStdDefaults", (PyCFunction)sv_SetStdDefaults},
|
|
{"UseExclusive", (PyCFunction)sv_UseExclusive},
|
|
{"WindowOffset", (PyCFunction)sv_WindowOffset},
|
|
{"InitContinuousCapture",(PyCFunction)sv_InitContinuousCapture},
|
|
{"CaptureBurst", (PyCFunction)sv_CaptureBurst},
|
|
{"CaptureOneFrame", (PyCFunction)sv_CaptureOneFrame},
|
|
{"GetCaptureData", (PyCFunction)sv_GetCaptureData},
|
|
{"CloseVideo", (PyCFunction)sv_CloseVideo},
|
|
{"LoadMap", (PyCFunction)sv_LoadMap},
|
|
{"GetParam", (PyCFunction)sv_GetParam},
|
|
{"GetParamRange", (PyCFunction)sv_GetParamRange},
|
|
{"SetParam", (PyCFunction)sv_SetParam},
|
|
{NULL, NULL} /* sentinel */
|
|
};
|
|
|
|
static PyObject *
|
|
sv_conversion(PyObject *self, PyObject *args, void (*function)(),
|
|
int inputfactor, float factor)
|
|
{
|
|
int invert, width, height, inputlength;
|
|
char *input, *str;
|
|
PyObject *output;
|
|
|
|
if (!PyArg_Parse(args, "(is#ii)", &invert,
|
|
&input, &inputlength, &width, &height))
|
|
return NULL;
|
|
|
|
if (width * height * inputfactor > inputlength) {
|
|
PyErr_SetString(SvError, "input buffer not long enough");
|
|
return NULL;
|
|
}
|
|
|
|
if (!(output = PyString_FromStringAndSize(NULL,
|
|
(int)(width * height * factor))))
|
|
return NULL;
|
|
|
|
str = PyString_AsString(output);
|
|
if (!str) {
|
|
Py_DECREF(output);
|
|
return NULL;
|
|
}
|
|
(*function)(invert, input, str, width, height);
|
|
|
|
return output;
|
|
}
|
|
|
|
static PyObject *
|
|
sv_InterleaveFields(PyObject *self, PyObject *args)
|
|
{
|
|
return sv_conversion(self, args, svInterleaveFields, 1, 1.0);
|
|
}
|
|
|
|
static PyObject *
|
|
sv_RGB8toRGB32(PyObject *self, PyObject *args)
|
|
{
|
|
return sv_conversion(self, args, svRGB8toRGB32, 1, (float) sizeof(long));
|
|
}
|
|
|
|
static PyObject *
|
|
sv_YUVtoRGB(PyObject *self, PyObject *args)
|
|
{
|
|
return sv_conversion(self, args, svYUVtoRGB, 2, (float) sizeof(long));
|
|
}
|
|
|
|
static void
|
|
svideo_dealloc(svobject *self)
|
|
{
|
|
if (self->ob_svideo != NULL)
|
|
(void) svCloseVideo(self->ob_svideo);
|
|
PyObject_Del(self);
|
|
}
|
|
|
|
static PyObject *
|
|
svideo_getattr(svobject *self, char *name)
|
|
{
|
|
return Py_FindMethod(svideo_methods, (PyObject *)self, name);
|
|
}
|
|
|
|
PyTypeObject Svtype = {
|
|
PyObject_HEAD_INIT(&PyType_Type)
|
|
0, /*ob_size*/
|
|
"sv", /*tp_name*/
|
|
sizeof(svobject), /*tp_size*/
|
|
0, /*tp_itemsize*/
|
|
/* methods */
|
|
(destructor)svideo_dealloc, /*tp_dealloc*/
|
|
0, /*tp_print*/
|
|
(getattrfunc)svideo_getattr, /*tp_getattr*/
|
|
0, /*tp_setattr*/
|
|
0, /*tp_compare*/
|
|
0, /*tp_repr*/
|
|
};
|
|
|
|
static PyObject *
|
|
newsvobject(SV_nodeP svp)
|
|
{
|
|
svobject *p;
|
|
|
|
p = PyObject_New(svobject, &Svtype);
|
|
if (p == NULL)
|
|
return NULL;
|
|
p->ob_svideo = svp;
|
|
p->ob_info.format = 0;
|
|
p->ob_info.size = 0;
|
|
p->ob_info.width = 0;
|
|
p->ob_info.height = 0;
|
|
p->ob_info.samplingrate = 0;
|
|
return (PyObject *) p;
|
|
}
|
|
|
|
static PyObject *
|
|
sv_OpenVideo(PyObject *self, PyObject *args)
|
|
{
|
|
SV_nodeP svp;
|
|
|
|
if (!PyArg_Parse(args, ""))
|
|
return NULL;
|
|
|
|
svp = svOpenVideo();
|
|
if (svp == NULL)
|
|
return sv_error();
|
|
|
|
return newsvobject(svp);
|
|
}
|
|
|
|
static PyMethodDef sv_methods[] = {
|
|
{"InterleaveFields", (PyCFunction)sv_InterleaveFields},
|
|
{"RGB8toRGB32", (PyCFunction)sv_RGB8toRGB32},
|
|
{"YUVtoRGB", (PyCFunction)sv_YUVtoRGB},
|
|
{"OpenVideo", (PyCFunction)sv_OpenVideo},
|
|
{NULL, NULL} /* Sentinel */
|
|
};
|
|
|
|
void
|
|
initsv(void)
|
|
{
|
|
PyObject *m, *d;
|
|
|
|
m = Py_InitModule("sv", sv_methods);
|
|
d = PyModule_GetDict(m);
|
|
|
|
SvError = PyErr_NewException("sv.error", NULL, NULL);
|
|
if (SvError == NULL || PyDict_SetItemString(d, "error", SvError) != 0)
|
|
return;
|
|
}
|