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| author | Mattias Andrée <maandree@operamail.com> | 2014-03-12 04:59:55 +0100 |
|---|---|---|
| committer | Mattias Andrée <maandree@operamail.com> | 2014-03-12 04:59:55 +0100 |
| commit | 63f9e547a22be704d5b6a3362008963926179f44 (patch) | |
| tree | 4f26f733f27b11b8a5951852b8781b1a98f3bc35 | |
| parent | map to crtc (diff) | |
| download | blueshift-63f9e547a22be704d5b6a3362008963926179f44.tar.gz blueshift-63f9e547a22be704d5b6a3362008963926179f44.tar.bz2 blueshift-63f9e547a22be704d5b6a3362008963926179f44.tar.xz | |
read gamma ramps
Signed-off-by: Mattias Andrée <maandree@operamail.com>
| -rw-r--r-- | src/blueshift_drm_c.c | 33 |
1 files changed, 32 insertions, 1 deletions
diff --git a/src/blueshift_drm_c.c b/src/blueshift_drm_c.c index dcba7c5..8cb45c4 100644 --- a/src/blueshift_drm_c.c +++ b/src/blueshift_drm_c.c @@ -181,10 +181,41 @@ int main(int argc, char** argv) drmModeEncoder* encoder = drmModeGetEncoder(drm_fd, connector->encoder_id); uint32_t crtc_id = encoder->crtc_id; int crtc; + drmModeFreeEncoder(encoder); for (crtc = 0; crtc < drm_res->count_crtcs; crtc++) if (*(drm_res->crtcs + crtc) == crtc_id) - printf("CRTC: %i\n", crtc); + { + printf("CRTC: %i\n", crtc); + break; + } + + if (crtc < drm_res->count_crtcs) + { + int gamma_size = blueshift_drm_gamma_size(crtc); + uint16_t* red = alloca(gamma_size * sizeof(uint16_t)); + uint16_t* green = alloca(gamma_size * sizeof(uint16_t)); + uint16_t* blue = alloca(gamma_size * sizeof(uint16_t)); + int j; + + /* We need to initialise it to avoid valgrind warnings */ + for (j = 0; j < gamma_size; j++) + *(red + j) = *(green + j) = *(blue + j) = 0; + + if (!drmModeCrtcGetGamma(drm_fd, crtc_id, gamma_size, red, green, blue)) + { + printf("Red:"); + for (j = 0; j < gamma_size; j++) + printf(" %u", *(red + j)); + printf("\nGreen:"); + for (j = 0; j < gamma_size; j++) + printf(" %u", *(green + j)); + printf("\nBlue:"); + for (j = 0; j < gamma_size; j++) + printf(" %u", *(blue + j)); + printf("\n"); + } + } } static const char* types[] = {"Unknown", "VGA", "DVII", "DVID", "DVIA", "Composite", "SVIDEO", "LVDS", "Component", "9PinDIN", "DisplayPort", "HDMIA", "HDMIB", "TV", "eDP", |