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Implemented image grabbing

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This commit is contained in:
Klaus Schmidinger
2000-09-17 11:53:35 +02:00
parent 27046cf8a9
commit b3c78919d5
7 changed files with 182 additions and 18 deletions
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1
CONTRIBUTORS
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@@ -19,6 +19,7 @@ Heino Goldenstein <heino.goldenstein@microplex.de>
Guido Fiala <gfiala@s.netic.de>
for implementing slow forward/back
for implementing the SVDRP command 'HITK'
for implementing image grabbing
Robert Schneider <Robert.Schneider@lotus.com>
for implementing EIT support for displaying the current/next info

9
HISTORY
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@@ -182,7 +182,8 @@ Video Disk Recorder Revision History
response time on user actions. As a consequence the EIT data may sometimes
not be displayed, but this will change later when cEIT runs as a separate
thread.
- The new SVDRP command 'HITK' can be used to 'hit' a remote control key.
Establish an SVDRP connection and enter HITK without a parameter for a list
of all valid key names.
- The new SVDRP command 'HITK' (thanks to Guido Fiala!) can be used to 'hit'
a remote control key. Establish an SVDRP connection and enter HITK without
a parameter for a list of all valid key names.
- The new SVDRP command 'GRAB' (thanks to Guido Fiala!) can be used to grab
the current frame and save it to a file.

4
Makefile
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@@ -4,7 +4,7 @@
# See the main source file 'vdr.c' for copyright information and
# how to reach the author.
#
# $Id: Makefile 1.9 2000/09/10 08:55:45 kls Exp $
# $Id: Makefile 1.10 2000/09/17 10:19:44 kls Exp $
DVBDIR = ../DVB
@@ -40,7 +40,7 @@ tools.o : tools.c tools.h
videodir.o : videodir.c tools.h videodir.h
vdr: $(OBJS)
g++ -g -O2 $(OBJS) -lncurses -o vdr
g++ -g -O2 $(OBJS) -lncurses -ljpeg -o vdr
clean:
-rm $(OBJS) vdr

109
dvbapi.c
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@@ -4,14 +4,18 @@
* See the main source file 'vdr.c' for copyright information and
* how to reach the author.
*
* $Id: dvbapi.c 1.25 2000/09/15 13:23:00 kls Exp $
* $Id: dvbapi.c 1.26 2000/09/17 11:53:35 kls Exp $
*/
#include "dvbapi.h"
#include <errno.h>
#include <fcntl.h>
extern "C" {
#include <jpeglib.h>
}
#include <stdlib.h>
#include <sys/ioctl.h>
#include <sys/mman.h>
#include <sys/stat.h>
#include <sys/time.h>
#include <unistd.h>
@@ -315,8 +319,8 @@ char *cIndexFile::Str(int Index, bool WithFrame)
static char buffer[16];
int f = (Index % FRAMESPERSEC) + 1;
int s = (Index / FRAMESPERSEC);
int m = s / 60 % 60;
int h = s / 3600;
int m = s / 60 % 60;
int h = s / 3600;
s %= 60;
snprintf(buffer, sizeof(buffer), WithFrame ? "%d:%02d:%02d.%02d" : "%d:%02d:%02d", h, m, s, f);
return buffer;
@@ -511,7 +515,7 @@ protected:
char *fileName, *pFileNumber;
bool stop;
int GetAvPesLength(void)
{
{
if (Byte(0) == 'A' && Byte(1) == 'V' && Byte(4) == 'U')
return (Byte(6) << 8) + Byte(7) + AV_PES_HEADER_LEN;
return 0;
@@ -751,7 +755,7 @@ int cRecordBuffer::Write(int Max)
if (n) {
if (stop && pictureType == I_FRAME) {
ok = false;
return -1; // finish the recording before the next 'I' frame
return -1; // finish the recording before the next 'I' frame
}
if (NextFile()) {
if (index && pictureType != NO_PICTURE)
@@ -801,7 +805,7 @@ private:
void Close(void);
public:
cReplayBuffer(int *OutFile, const char *FileName);
virtual ~cReplayBuffer();
virtual ~cReplayBuffer();
virtual int Read(int Max = -1);
virtual int Write(int Max = -1);
void SetMode(eReplayMode Mode);
@@ -1067,7 +1071,7 @@ cDvbApi::cDvbApi(const char *FileName)
cols = rows = 0;
#if defined(DEBUG_OSD) || defined(REMOTE_KBD)
initscr();
keypad(stdscr, TRUE);
keypad(stdscr, true);
nonl();
cbreak();
noecho();
@@ -1076,7 +1080,7 @@ cDvbApi::cDvbApi(const char *FileName)
#if defined(DEBUG_OSD)
memset(&colorPairs, 0, sizeof(colorPairs));
start_color();
leaveok(stdscr, TRUE);
leaveok(stdscr, true);
window = NULL;
#endif
lastProgress = lastTotal = -1;
@@ -1187,6 +1191,93 @@ void cDvbApi::Cleanup(void)
PrimaryDvbApi = NULL;
}
bool cDvbApi::GrabImage(const char *FileName, bool Jpeg, int Quality, int SizeX, int SizeY)
{
int result = 0;
// just do this once?
struct video_mbuf mbuf;
result |= ioctl(videoDev, VIDIOCGMBUF, &mbuf);
int msize = mbuf.size;
// gf: this needs to be a protected member of cDvbApi! //XXX kls: WHY???
unsigned char *mem = (unsigned char *)mmap(0, msize, PROT_READ | PROT_WRITE, MAP_SHARED, videoDev, 0);
if (!mem || mem == (unsigned char *)-1)
return false;
// set up the size and RGB
struct video_capability vc;
result |= ioctl(videoDev, VIDIOCGCAP, &vc);
struct video_mmap vm;
vm.frame = 0;
if ((SizeX > 0) && (SizeX <= vc.maxwidth) &&
(SizeY > 0) && (SizeY <= vc.maxheight)) {
vm.width = SizeX;
vm.height = SizeY;
}
else {
vm.width = vc.maxwidth;
vm.height = vc.maxheight;
}
vm.format = VIDEO_PALETTE_RGB24;
// this needs to be done every time:
result |= ioctl(videoDev, VIDIOCMCAPTURE, &vm);
result |= ioctl(videoDev, VIDIOCSYNC, &vm.frame);
// make RGB out of BGR:
int memsize = vm.width * vm.height;
unsigned char *mem1 = mem;
for (int i = 0; i < memsize; i++) {
unsigned char tmp = mem1[2];
mem1[2] = mem1[0];
mem1[0] = tmp;
mem1 += 3;
}
if (Quality < 0)
Quality = 255; //XXX is this 'best'???
isyslog(LOG_INFO, "grabbing to %s (%s %d %d %d)", FileName, Jpeg ? "JPEG" : "PNM", Quality, vm.width, vm.height);
FILE *f = fopen(FileName, "wb");
if (f) {
if (Jpeg) {
// write JPEG file:
struct jpeg_compress_struct cinfo;
struct jpeg_error_mgr jerr;
cinfo.err = jpeg_std_error(&jerr);
jpeg_create_compress(&cinfo);
jpeg_stdio_dest(&cinfo, f);
cinfo.image_width = vm.width;
cinfo.image_height = vm.height;
cinfo.input_components = 3;
cinfo.in_color_space = JCS_RGB;
jpeg_set_defaults(&cinfo);
jpeg_set_quality(&cinfo, Quality, true);
jpeg_start_compress(&cinfo, true);
int rs = vm.width * 3;
JSAMPROW rp[vm.height];
for (int k = 0; k < vm.height; k++)
rp[k] = &mem[rs * k];
jpeg_write_scanlines(&cinfo, rp, vm.height);
jpeg_finish_compress(&cinfo);
jpeg_destroy_compress(&cinfo);
}
else {
// write PNM file:
if (fprintf(f, "P6\n%d\n%d\n255\n", vm.width, vm.height) < 0 ||
fwrite(mem, vm.width * vm.height * 3, 1, f) < 0) {
LOG_ERROR_STR(FileName);
result |= 1;
}
}
fclose(f);
}
else {
LOG_ERROR_STR(FileName);
result |= 1;
}
munmap(mem, msize);
return result == 0;
}
#ifdef DEBUG_OSD
void cDvbApi::SetColor(eDvbColor colorFg, eDvbColor colorBg)
{
@@ -1233,7 +1324,7 @@ void cDvbApi::Open(int w, int h)
rows = h;
#ifdef DEBUG_OSD
window = subwin(stdscr, h, w, d, 0);
syncok(window, TRUE);
syncok(window, true);
#define B2C(b) (((b) * 1000) / 255)
#define SETCOLOR(n, r, g, b, o) init_color(n, B2C(r), B2C(g), B2C(b))
#else

6
dvbapi.h
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@@ -4,7 +4,7 @@
* See the main source file 'vdr.c' for copyright information and
* how to reach the author.
*
* $Id: dvbapi.h 1.14 2000/09/10 10:03:29 kls Exp $
* $Id: dvbapi.h 1.15 2000/09/17 11:43:10 kls Exp $
*/
#ifndef __DVBAPI_H
@@ -70,6 +70,10 @@ public:
// Closes down all DVB devices.
// Must be called at the end of the program.
// Image Grab facilities
bool GrabImage(const char *FileName, bool Jpeg = true, int Quality = -1, int SizeX = -1, int SizeY = -1);
// On Screen Display facilities
private:

68
svdrp.c
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@@ -10,7 +10,7 @@
* and interact with the Video Disk Recorder - or write a full featured
* graphical interface that sits on top of an SVDRP connection.
*
* $Id: svdrp.c 1.8 2000/09/17 09:24:52 kls Exp $
* $Id: svdrp.c 1.9 2000/09/17 11:29:33 kls Exp $
*/
#define _GNU_SOURCE
@@ -120,6 +120,10 @@ const char *HelpPages[] = {
" Delete channel.",
"DELT <number>\n"
" Delete timer.",
"GRAB <filename> [ jpeg | pnm [ <quality> [ <sizex> <sizey> ] ] ]\n"
" Grab the current frame and save it to the given file. Images can\n"
" be stored as JPEG (default) or PNM, at the given quality (default\n"
" is 'maximum', only applies to JPEG) and size (default is full screen).",
"HELP [ <topic> ]\n"
" The HELP command gives help info.",
"HITK [ <key> ]\n"
@@ -363,6 +367,67 @@ void cSVDRP::CmdDELT(const char *Option)
Reply(501, "Missing timer number");
}
void cSVDRP::CmdGRAB(const char *Option)
{
char *FileName = NULL;
bool Jpeg = true;
int Quality = -1, SizeX = -1, SizeY = -1;
if (*Option) {
char buf[strlen(Option) + 1];
char *p = strcpy(buf, Option);
const char *delim = " \t";
FileName = strtok(p, delim);
if ((p = strtok(NULL, delim)) != NULL) {
if (strcasecmp(p, "JPEG") == 0)
Jpeg = true;
else if (strcasecmp(p, "PNM") == 0)
Jpeg = false;
else {
Reply(501, "Unknown image type \"%s\"", p);
return;
}
}
if ((p = strtok(NULL, delim)) != NULL) {
if (isnumber(p))
Quality = atoi(p);
else {
Reply(501, "Illegal quality \"%s\"", p);
return;
}
}
if ((p = strtok(NULL, delim)) != NULL) {
if (isnumber(p))
SizeX = atoi(p);
else {
Reply(501, "Illegal sizex \"%s\"", p);
return;
}
if ((p = strtok(NULL, delim)) != NULL) {
if (isnumber(p))
SizeY = atoi(p);
else {
Reply(501, "Illegal sizey \"%s\"", p);
return;
}
}
else {
Reply(501, "Missing sizey");
return;
}
}
if ((p = strtok(NULL, delim)) != NULL) {
Reply(501, "Unexpected parameter \"%s\"", p);
return;
}
if (cDvbApi::PrimaryDvbApi->GrabImage(FileName, Jpeg, Quality, SizeX, SizeY))
Reply(250, "Grabbed image %s", Option);
else
Reply(451, "Grab image failed");
}
else
Reply(501, "Missing filename");
}
void cSVDRP::CmdHELP(const char *Option)
{
if (*Option) {
@@ -636,6 +701,7 @@ void cSVDRP::Execute(char *Cmd)
if (CMD("CHAN")) CmdCHAN(s);
else if (CMD("DELC")) CmdDELC(s);
else if (CMD("DELT")) CmdDELT(s);
else if (CMD("GRAB")) CmdGRAB(s);
else if (CMD("HELP")) CmdHELP(s);
else if (CMD("HITK")) CmdHITK(s);
else if (CMD("LSTC")) CmdLSTC(s);

3
svdrp.h
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@@ -4,7 +4,7 @@
* See the main source file 'vdr.c' for copyright information and
* how to reach the author.
*
* $Id: svdrp.h 1.4 2000/09/17 08:52:51 kls Exp $
* $Id: svdrp.h 1.5 2000/09/17 10:22:49 kls Exp $
*/
#ifndef __SVDRP_H
@@ -35,6 +35,7 @@ private:
void CmdCHAN(const char *Option);
void CmdDELC(const char *Option);
void CmdDELT(const char *Option);
void CmdGRAB(const char *Option);
void CmdHELP(const char *Option);
void CmdHITK(const char *Option);
void CmdLSTC(const char *Option);