diff options
Diffstat (limited to 'xorg-server/hw/xfree86/utils/gtf/gtf.c')
| -rw-r--r-- | xorg-server/hw/xfree86/utils/gtf/gtf.c | 324 |
1 files changed, 140 insertions, 184 deletions
diff --git a/xorg-server/hw/xfree86/utils/gtf/gtf.c b/xorg-server/hw/xfree86/utils/gtf/gtf.c index 87fcb3f0e..15503bb35 100644 --- a/xorg-server/hw/xfree86/utils/gtf/gtf.c +++ b/xorg-server/hw/xfree86/utils/gtf/gtf.c @@ -104,7 +104,7 @@ */ #ifdef HAVE_XORG_CONFIG_H -# include <xorg-config.h> +#include <xorg-config.h> #endif #include <stdio.h> @@ -128,38 +128,28 @@ #define C_PRIME (((C - J) * K/256.0) + J) #define M_PRIME (K/256.0 * M) - /* struct definitions */ -typedef struct __mode -{ +typedef struct __mode { int hr, hss, hse, hfl; int vr, vss, vse, vfl; float pclk, h_freq, v_freq; } mode; - -typedef struct __options -{ +typedef struct __options { int x, y; int xorgmode, fbmode; float v_freq; } options; - - - /* prototypes */ void print_value(int n, const char *name, float val); -void print_xf86_mode (mode *m); -void print_fb_mode (mode *m); -mode *vert_refresh (int h_pixels, int v_lines, float freq, - int interlaced, int margins); -options *parse_command_line (int argc, char *argv[]); - - - +void print_xf86_mode(mode * m); +void print_fb_mode(mode * m); +mode *vert_refresh(int h_pixels, int v_lines, float freq, + int interlaced, int margins); +options *parse_command_line(int argc, char *argv[]); /* * print_value() - print the result of the named computation; this is @@ -168,34 +158,31 @@ options *parse_command_line (int argc, char *argv[]); int global_verbose = 0; -void print_value(int n, const char *name, float val) +void +print_value(int n, const char *name, float val) { if (global_verbose) { printf("%2d: %-27s: %15f\n", n, name, val); } } - - /* print_xf86_mode() - print the XServer modeline, given mode timings. */ -void print_xf86_mode (mode *m) +void +print_xf86_mode(mode * m) { - printf ("\n"); - printf (" # %dx%d @ %.2f Hz (GTF) hsync: %.2f kHz; pclk: %.2f MHz\n", - m->hr, m->vr, m->v_freq, m->h_freq, m->pclk); - - printf (" Modeline \"%dx%d_%.2f\" %.2f" - " %d %d %d %d" - " %d %d %d %d" - " -HSync +Vsync\n\n", - m->hr, m->vr, m->v_freq, m->pclk, - m->hr, m->hss, m->hse, m->hfl, - m->vr, m->vss, m->vse, m->vfl); - -} + printf("\n"); + printf(" # %dx%d @ %.2f Hz (GTF) hsync: %.2f kHz; pclk: %.2f MHz\n", + m->hr, m->vr, m->v_freq, m->h_freq, m->pclk); + printf(" Modeline \"%dx%d_%.2f\" %.2f" + " %d %d %d %d" + " %d %d %d %d" + " -HSync +Vsync\n\n", + m->hr, m->vr, m->v_freq, m->pclk, + m->hr, m->hss, m->hse, m->hfl, m->vr, m->vss, m->vse, m->vfl); +} /* * print_fb_mode() - print a mode description in fbset(8) format; @@ -243,31 +230,26 @@ void print_xf86_mode (mode *m) * to edit the mode description after it's generated. */ -void print_fb_mode (mode *m) +void +print_fb_mode(mode * m) { - printf ("\n"); - printf ("mode \"%dx%d %.2fHz 32bit (GTF)\"\n", - m->hr, m->vr, m->v_freq); - printf (" # PCLK: %.2f MHz, H: %.2f kHz, V: %.2f Hz\n", - m->pclk, m->h_freq, m->v_freq); - printf (" geometry %d %d %d %d 32\n", - m->hr, m->vr, m->hr, m->vr); - printf (" timings %d %d %d %d %d %d %d\n", - (int) rint(1000000.0/m->pclk),/* pixclock in picoseconds */ - m->hfl - m->hse, /* left margin (in pixels) */ - m->hss - m->hr, /* right margin (in pixels) */ - m->vfl - m->vse, /* upper margin (in pixel lines) */ - m->vss - m->vr, /* lower margin (in pixel lines) */ - m->hse - m->hss, /* horizontal sync length (pixels) */ - m->vse - m->vss); /* vert sync length (pixel lines) */ - printf (" hsync low\n"); - printf (" vsync high\n"); - printf ("endmode\n\n"); - -} - - + printf("\n"); + printf("mode \"%dx%d %.2fHz 32bit (GTF)\"\n", m->hr, m->vr, m->v_freq); + printf(" # PCLK: %.2f MHz, H: %.2f kHz, V: %.2f Hz\n", + m->pclk, m->h_freq, m->v_freq); + printf(" geometry %d %d %d %d 32\n", m->hr, m->vr, m->hr, m->vr); + printf(" timings %d %d %d %d %d %d %d\n", (int) rint(1000000.0 / m->pclk), /* pixclock in picoseconds */ + m->hfl - m->hse, /* left margin (in pixels) */ + m->hss - m->hr, /* right margin (in pixels) */ + m->vfl - m->vse, /* upper margin (in pixel lines) */ + m->vss - m->vr, /* lower margin (in pixel lines) */ + m->hse - m->hss, /* horizontal sync length (pixels) */ + m->vse - m->vss); /* vert sync length (pixel lines) */ + printf(" hsync low\n"); + printf(" vsync high\n"); + printf("endmode\n\n"); +} /* * vert_refresh() - as defined by the GTF Timing Standard, compute the @@ -282,8 +264,8 @@ void print_fb_mode (mode *m) * XServer of fbset mode descriptions, from what I can tell). */ -mode *vert_refresh (int h_pixels, int v_lines, float freq, - int interlaced, int margins) +mode * +vert_refresh(int h_pixels, int v_lines, float freq, int interlaced, int margins) { float h_pixels_rnd; float v_lines_rnd; @@ -312,9 +294,8 @@ mode *vert_refresh (int h_pixels, int v_lines, float freq, float h_front_porch; float v_odd_front_porch_lines; - mode *m = (mode*) malloc (sizeof (mode)); - - + mode *m = (mode *) malloc(sizeof(mode)); + /* 1. In order to give correct results, the number of horizontal * pixels requested is first processed to ensure that it is divisible * by the character size, by rounding it to the nearest character @@ -322,12 +303,11 @@ mode *vert_refresh (int h_pixels, int v_lines, float freq, * * [H PIXELS RND] = ((ROUND([H PIXELS]/[CELL GRAN RND],0))*[CELLGRAN RND]) */ - + h_pixels_rnd = rint((float) h_pixels / CELL_GRAN) * CELL_GRAN; - + print_value(1, "[H PIXELS RND]", h_pixels_rnd); - /* 2. If interlace is requested, the number of vertical lines assumed * by the calculation must be halved, as the computation calculates * the number of vertical lines per field. In either case, the @@ -338,12 +318,10 @@ mode *vert_refresh (int h_pixels, int v_lines, float freq, */ v_lines_rnd = interlaced ? - rint((float) v_lines) / 2.0 : - rint((float) v_lines); - + rint((float) v_lines) / 2.0 : rint((float) v_lines); + print_value(2, "[V LINES RND]", v_lines_rnd); - - + /* 3. Find the frame rate required: * * [V FIELD RATE RQD] = IF([INT RQD?]="y", [I/P FREQ RQD]*2, @@ -353,7 +331,6 @@ mode *vert_refresh (int h_pixels, int v_lines, float freq, v_field_rate_rqd = interlaced ? (freq * 2.0) : (freq); print_value(3, "[V FIELD RATE RQD]", v_field_rate_rqd); - /* 4. Find number of lines in Top margin: * @@ -365,7 +342,6 @@ mode *vert_refresh (int h_pixels, int v_lines, float freq, top_margin = margins ? rint(MARGIN_PERCENT / 100.0 * v_lines_rnd) : (0.0); print_value(4, "[TOP MARGIN (LINES)]", top_margin); - /* 5. Find number of lines in Bottom margin: * @@ -374,11 +350,11 @@ mode *vert_refresh (int h_pixels, int v_lines, float freq, * 0) */ - bottom_margin = margins ? rint(MARGIN_PERCENT/100.0 * v_lines_rnd) : (0.0); + bottom_margin = + margins ? rint(MARGIN_PERCENT / 100.0 * v_lines_rnd) : (0.0); print_value(5, "[BOT MARGIN (LINES)]", bottom_margin); - /* 6. If interlace is required, then set variable [INTERLACE]=0.5: * * [INTERLACE]=(IF([INT RQD?]="y",0.5,0)) @@ -387,7 +363,6 @@ mode *vert_refresh (int h_pixels, int v_lines, float freq, interlace = interlaced ? 0.5 : 0.0; print_value(6, "[INTERLACE]", interlace); - /* 7. Estimate the Horizontal period * @@ -396,34 +371,31 @@ mode *vert_refresh (int h_pixels, int v_lines, float freq, * [MIN PORCH RND]+[INTERLACE]) * 1000000 */ - h_period_est = (((1.0/v_field_rate_rqd) - (MIN_VSYNC_PLUS_BP/1000000.0)) - / (v_lines_rnd + (2*top_margin) + MIN_PORCH + interlace) + h_period_est = (((1.0 / v_field_rate_rqd) - (MIN_VSYNC_PLUS_BP / 1000000.0)) + / (v_lines_rnd + (2 * top_margin) + MIN_PORCH + interlace) * 1000000.0); print_value(7, "[H PERIOD EST]", h_period_est); - /* 8. Find the number of lines in V sync + back porch: * * [V SYNC+BP] = ROUND(([MIN VSYNC+BP]/[H PERIOD EST]),0) */ - vsync_plus_bp = rint(MIN_VSYNC_PLUS_BP/h_period_est); + vsync_plus_bp = rint(MIN_VSYNC_PLUS_BP / h_period_est); print_value(8, "[V SYNC+BP]", vsync_plus_bp); - - + /* 9. Find the number of lines in V back porch alone: * * [V BACK PORCH] = [V SYNC+BP] - [V SYNC RND] * * XXX is "[V SYNC RND]" a typo? should be [V SYNC RQD]? */ - + v_back_porch = vsync_plus_bp - V_SYNC_RQD; - + print_value(9, "[V BACK PORCH]", v_back_porch); - /* 10. Find the total number of lines in Vertical field period: * @@ -434,9 +406,8 @@ mode *vert_refresh (int h_pixels, int v_lines, float freq, total_v_lines = v_lines_rnd + top_margin + bottom_margin + vsync_plus_bp + interlace + MIN_PORCH; - + print_value(10, "[TOTAL V LINES]", total_v_lines); - /* 11. Estimate the Vertical field frequency: * @@ -444,9 +415,8 @@ mode *vert_refresh (int h_pixels, int v_lines, float freq, */ v_field_rate_est = 1.0 / h_period_est / total_v_lines * 1000000.0; - + print_value(11, "[V FIELD RATE EST]", v_field_rate_est); - /* 12. Find the actual horizontal period: * @@ -454,9 +424,8 @@ mode *vert_refresh (int h_pixels, int v_lines, float freq, */ h_period = h_period_est / (v_field_rate_rqd / v_field_rate_est); - + print_value(12, "[H PERIOD]", h_period); - /* 13. Find the actual Vertical field frequency: * @@ -466,7 +435,6 @@ mode *vert_refresh (int h_pixels, int v_lines, float freq, v_field_rate = 1.0 / h_period / total_v_lines * 1000000.0; print_value(13, "[V FIELD RATE]", v_field_rate); - /* 14. Find the Vertical frame frequency: * @@ -476,7 +444,6 @@ mode *vert_refresh (int h_pixels, int v_lines, float freq, v_frame_rate = interlaced ? v_field_rate / 2.0 : v_field_rate; print_value(14, "[V FRAME RATE]", v_frame_rate); - /* 15. Find number of pixels in left margin: * @@ -489,9 +456,8 @@ mode *vert_refresh (int h_pixels, int v_lines, float freq, left_margin = margins ? rint(h_pixels_rnd * MARGIN_PERCENT / 100.0 / CELL_GRAN) * CELL_GRAN : 0.0; - + print_value(15, "[LEFT MARGIN (PIXELS)]", left_margin); - /* 16. Find number of pixels in right margin: * @@ -500,13 +466,12 @@ mode *vert_refresh (int h_pixels, int v_lines, float freq, * [CELL GRAN RND]),0)) * [CELL GRAN RND], * 0)) */ - + right_margin = margins ? rint(h_pixels_rnd * MARGIN_PERCENT / 100.0 / CELL_GRAN) * CELL_GRAN : 0.0; - + print_value(16, "[RIGHT MARGIN (PIXELS)]", right_margin); - /* 17. Find total number of active pixels in image and left and right * margins: @@ -516,10 +481,9 @@ mode *vert_refresh (int h_pixels, int v_lines, float freq, */ total_active_pixels = h_pixels_rnd + left_margin + right_margin; - + print_value(17, "[TOTAL ACTIVE PIXELS]", total_active_pixels); - - + /* 18. Find the ideal blanking duty cycle from the blanking duty cycle * equation: * @@ -527,9 +491,8 @@ mode *vert_refresh (int h_pixels, int v_lines, float freq, */ ideal_duty_cycle = C_PRIME - (M_PRIME * h_period / 1000.0); - + print_value(18, "[IDEAL DUTY CYCLE]", ideal_duty_cycle); - /* 19. Find the number of pixels in the blanking time to the nearest * double character cell: @@ -545,9 +508,8 @@ mode *vert_refresh (int h_pixels, int v_lines, float freq, ideal_duty_cycle / (100.0 - ideal_duty_cycle) / (2.0 * CELL_GRAN)) * (2.0 * CELL_GRAN); - + print_value(19, "[H BLANK (PIXELS)]", h_blank); - /* 20. Find total number of pixels: * @@ -555,19 +517,17 @@ mode *vert_refresh (int h_pixels, int v_lines, float freq, */ total_pixels = total_active_pixels + h_blank; - + print_value(20, "[TOTAL PIXELS]", total_pixels); - /* 21. Find pixel clock frequency: * * [PIXEL FREQ] = [TOTAL PIXELS] / [H PERIOD] */ - + pixel_freq = total_pixels / h_period; - + print_value(21, "[PIXEL FREQ]", pixel_freq); - /* 22. Find horizontal frequency: * @@ -575,28 +535,24 @@ mode *vert_refresh (int h_pixels, int v_lines, float freq, */ h_freq = 1000.0 / h_period; - - print_value(22, "[H FREQ]", h_freq); - + print_value(22, "[H FREQ]", h_freq); /* Stage 1 computations are now complete; I should really pass the results to another function and do the Stage 2 computations, but I only need a few more values so I'll just append the computations here for now */ - - /* 17. Find the number of pixels in the horizontal sync period: * * [H SYNC (PIXELS)] =(ROUND(([H SYNC%] / 100 * [TOTAL PIXELS] / * [CELL GRAN RND]),0))*[CELL GRAN RND] */ - h_sync = rint(H_SYNC_PERCENT/100.0 * total_pixels / CELL_GRAN) * CELL_GRAN; + h_sync = + rint(H_SYNC_PERCENT / 100.0 * total_pixels / CELL_GRAN) * CELL_GRAN; print_value(17, "[H SYNC (PIXELS)]", h_sync); - /* 18. Find the number of pixels in the horizontal front porch period: * @@ -606,136 +562,136 @@ mode *vert_refresh (int h_pixels, int v_lines, float freq, h_front_porch = (h_blank / 2.0) - h_sync; print_value(18, "[H FRONT PORCH (PIXELS)]", h_front_porch); - - + /* 36. Find the number of lines in the odd front porch period: * * [V ODD FRONT PORCH(LINES)]=([MIN PORCH RND]+[INTERLACE]) */ - + v_odd_front_porch_lines = MIN_PORCH + interlace; - + print_value(36, "[V ODD FRONT PORCH(LINES)]", v_odd_front_porch_lines); - /* finally, pack the results in the mode struct */ - - m->hr = (int) (h_pixels_rnd); + + m->hr = (int) (h_pixels_rnd); m->hss = (int) (h_pixels_rnd + h_front_porch); m->hse = (int) (h_pixels_rnd + h_front_porch + h_sync); m->hfl = (int) (total_pixels); - m->vr = (int) (v_lines_rnd); + m->vr = (int) (v_lines_rnd); m->vss = (int) (v_lines_rnd + v_odd_front_porch_lines); m->vse = (int) (int) (v_lines_rnd + v_odd_front_porch_lines + V_SYNC_RQD); m->vfl = (int) (total_v_lines); - m->pclk = pixel_freq; + m->pclk = pixel_freq; m->h_freq = h_freq; m->v_freq = freq; return m; - -} - - +} /* * parse_command_line() - parse the command line and return an * alloced structure containing the results. On error print usage * and return NULL. - */ + */ -options *parse_command_line (int argc, char *argv[]) +options * +parse_command_line(int argc, char *argv[]) { int n; - options *o = (options *) calloc (1, sizeof (options)); + options *o = (options *) calloc(1, sizeof(options)); - if (argc < 4) goto bad_option; + if (argc < 4) + goto bad_option; - o->x = atoi (argv[1]); - o->y = atoi (argv[2]); - o->v_freq = atof (argv[3]); + o->x = atoi(argv[1]); + o->y = atoi(argv[2]); + o->v_freq = atof(argv[3]); /* XXX should check for errors in the above */ - + n = 4; while (n < argc) { - if ((strcmp (argv[n], "-v") == 0) || - (strcmp (argv[n], "--verbose") == 0)) { + if ((strcmp(argv[n], "-v") == 0) || (strcmp(argv[n], "--verbose") == 0)) { global_verbose = 1; - } else if ((strcmp (argv[n], "-f") == 0) || - (strcmp (argv[n], "--fbmode") == 0)) { + } + else if ((strcmp(argv[n], "-f") == 0) || + (strcmp(argv[n], "--fbmode") == 0)) { o->fbmode = 1; - } else if ((strcmp (argv[n], "-x") == 0) || - (strcmp (argv[n], "--xorgmode") == 0) || - (strcmp (argv[n], "--xf86mode") == 0)) { + } + else if ((strcmp(argv[n], "-x") == 0) || + (strcmp(argv[n], "--xorgmode") == 0) || + (strcmp(argv[n], "--xf86mode") == 0)) { o->xorgmode = 1; - } else { + } + else { goto bad_option; } - + n++; } /* if neither xorgmode nor fbmode were requested, default to xorgmode */ - if (!o->fbmode && !o->xorgmode) o->xorgmode = 1; - + if (!o->fbmode && !o->xorgmode) + o->xorgmode = 1; + return o; - + bad_option: - fprintf (stderr, "\n"); - fprintf (stderr, "usage: %s x y refresh [-v|--verbose] " - "[-f|--fbmode] [-x|--xorgmode]\n", argv[0]); - - fprintf (stderr, "\n"); - - fprintf (stderr, " x : the desired horizontal " - "resolution (required)\n"); - fprintf (stderr, " y : the desired vertical " - "resolution (required)\n"); - fprintf (stderr, " refresh : the desired refresh " - "rate (required)\n"); - fprintf (stderr, " -v|--verbose : enable verbose printouts " - "(traces each step of the computation)\n"); - fprintf (stderr, " -f|--fbmode : output an fbset(8)-style mode " - "description\n"); - fprintf (stderr, " -x|--xorgmode : output an "__XSERVERNAME__"-style mode " - "description (this is the default\n" - " if no mode description is requested)\n"); - - fprintf (stderr, "\n"); - - free (o); - return NULL; + fprintf(stderr, "\n"); + fprintf(stderr, "usage: %s x y refresh [-v|--verbose] " + "[-f|--fbmode] [-x|--xorgmode]\n", argv[0]); -} + fprintf(stderr, "\n"); + fprintf(stderr, " x : the desired horizontal " + "resolution (required)\n"); + fprintf(stderr, " y : the desired vertical " + "resolution (required)\n"); + fprintf(stderr, " refresh : the desired refresh " "rate (required)\n"); + fprintf(stderr, " -v|--verbose : enable verbose printouts " + "(traces each step of the computation)\n"); + fprintf(stderr, " -f|--fbmode : output an fbset(8)-style mode " + "description\n"); + fprintf(stderr, " -x|--xorgmode : output an " __XSERVERNAME__ "-style mode " + "description (this is the default\n" + " if no mode description is requested)\n"); + fprintf(stderr, "\n"); -int main (int argc, char *argv[]) + free(o); + return NULL; + +} + +int +main(int argc, char *argv[]) { mode *m; options *o; - o = parse_command_line (argc, argv); - if (!o) exit (1); - - m = vert_refresh (o->x, o->y, o->v_freq, 0, 0); - if (!m) exit (1); + o = parse_command_line(argc, argv); + if (!o) + exit(1); + + m = vert_refresh(o->x, o->y, o->v_freq, 0, 0); + if (!m) + exit(1); if (o->xorgmode) print_xf86_mode(m); - + if (o->fbmode) print_fb_mode(m); - + return 0; - + } |