diff options
Diffstat (limited to 'src/lib/gamma-helper.c')
| -rw-r--r-- | src/lib/gamma-helper.c | 100 |
1 files changed, 32 insertions, 68 deletions
diff --git a/src/lib/gamma-helper.c b/src/lib/gamma-helper.c index dd4e027..5e3c09b 100644 --- a/src/lib/gamma-helper.c +++ b/src/lib/gamma-helper.c @@ -25,9 +25,15 @@ #include <stdint.h> +/** + * Just an arbitrary version + */ #define ANY bits64 +#define __translate(instruction) for (i = 0; i < n; i++) instruction; break + + /** * Convert any set of gamma ramps into a 64-bit integer array with all channels. * @@ -41,32 +47,16 @@ static void translate_to_64(signed depth, size_t n, uint64_t* restrict out, libg size_t i; switch (depth) { - case 16: - for (i = 0; i < n; i++) - out[i] = (uint64_t)(in.bits16.red[i]) * 0x0001000100010001ULL; - break; - - case 32: - for (i = 0; i < n; i++) - out[i] = (uint64_t)(in.bits32.red[i]) * 0x0000000100000001ULL; - break; - - case 64: - for (i = 0; i < n; i++) - out[i] = in.bits64.red[i]; - break; - - case -1: - for (i = 0; i < n; i++) - out[i] = (uint64_t)(in.float_single.red[i] * (float)UINT64_MAX); - break; - - case -2: - for (i = 0; i < n; i++) - out[i] = (uint64_t)(in.float_double.red[i] * (double)UINT64_MAX); - break; - - default: /* This is not possible. */ + /* Translate integer. */ + case 16: __translate(out[i] = (uint64_t)(in.bits16.red[i]) * 0x0001000100010001ULL); + case 32: __translate(out[i] = (uint64_t)(in.bits32.red[i]) * 0x0000000100000001ULL); + /* Identity translation. */ + case 64: __translate(out[i] = in.bits64.red[i]); + /* Translate floating point. */ + case -1: __translate(out[i] = (uint64_t)(in.float_single.red[i] * (float)UINT64_MAX)); + case -2: __translate(out[i] = (uint64_t)(in.float_double.red[i] * (double)UINT64_MAX)); + default: + /* This is not possible. */ abort(); break; } @@ -84,35 +74,18 @@ static void translate_to_64(signed depth, size_t n, uint64_t* restrict out, libg static void translate_from_64(signed depth, size_t n, libgamma_gamma_ramps_any_t out, uint64_t* restrict in) { size_t i; - switch (depth) { - case 16: - for (i = 0; i < n; i++) - out.bits16.red[i] = (uint16_t)(in[i] / 0x0001000100010001ULL); - break; - - case 32: - for (i = 0; i < n; i++) - out.bits32.red[i] = (uint32_t)(in[i] / 0x0000000100000001ULL); - break; - - case 64: - for (i = 0; i < n; i++) - out.bits64.red[i] = in[i]; - break; - - case -1: - for (i = 0; i < n; i++) - out.float_single.red[i] = (float)(in[i]) / (float)UINT64_MAX; - break; - - case -2: - for (i = 0; i < n; i++) - out.float_double.red[i] = (double)(in[i]) / (double)UINT64_MAX; - break; - - default: /* This is not possible. */ + /* Translate integer. */ + case 16: __translate(out.bits16.red[i] = (uint16_t)(in[i] / 0x0001000100010001ULL)); + case 32: __translate(out.bits32.red[i] = (uint32_t)(in[i] / 0x0000000100000001ULL)); + /* Identity translation. */ + case 64: __translate(out.bits64.red[i] = in[i]); + /* Translate floating point. */ + case -1: __translate(out.float_single.red[i] = (float)(in[i]) / (float)UINT64_MAX); + case -2: __translate(out.float_double.red[i] = (double)(in[i]) / (double)UINT64_MAX); + default: + /* This is not possible. */ abort(); break; } @@ -133,8 +106,7 @@ static void translate_from_64(signed depth, size_t n, libgamma_gamma_ramps_any_t static int allocated_any_ramp(libgamma_gamma_ramps_any_t* restrict ramps_sys, libgamma_gamma_ramps_any_t ramps, signed depth, size_t* restrict elements) { - size_t n = 0; - size_t d; + size_t n = 0, d; switch (depth) { @@ -156,7 +128,7 @@ static int allocated_any_ramp(libgamma_gamma_ramps_any_t* restrict ramps_sys, ramps_sys->ANY.blue = (void*)(((char*)(ramps_sys->ANY.green)) + ramps.ANY.green_size * d / sizeof(char)); *elements = n; - return ramps_sys->ANY.red ? 0 : LIBGAMMA_ERRNO_SET; + return ramps_sys->ANY.red == NULL ? LIBGAMMA_ERRNO_SET : 0; } @@ -189,16 +161,10 @@ int libgamma_translated_ramp_get_(libgamma_crtc_state_t* restrict this, return r; if ((r = fun(this, &ramps_sys))) - { - free(ramps_sys.ANY.red); - return r; - } + return free(ramps_sys.ANY.red), r; if ((ramps_full = malloc(n * sizeof(uint64_t))) == NULL) - { - free(ramps_sys.ANY.red); - return LIBGAMMA_ERRNO_SET; - } + return free(ramps_sys.ANY.red), LIBGAMMA_ERRNO_SET; translate_to_64(depth_system, n, ramps_full, ramps_sys); free(ramps_sys.ANY.red); @@ -238,10 +204,7 @@ int libgamma_translated_ramp_set_(libgamma_crtc_state_t* restrict this, return r; if ((ramps_full = malloc(n * sizeof(uint64_t))) == NULL) - { - free(ramps_sys.ANY.red); - return LIBGAMMA_ERRNO_SET; - } + return free(ramps_sys.ANY.red), LIBGAMMA_ERRNO_SET; translate_to_64(depth_user, n, ramps_full, ramps); translate_from_64(depth_system, n, ramps_sys, ramps_full); @@ -254,5 +217,6 @@ int libgamma_translated_ramp_set_(libgamma_crtc_state_t* restrict this, } +#undef __translate #undef ANY |