diff options
Diffstat (limited to 'src')
| -rw-r--r-- | src/libcoopgamma.c | 163 |
1 files changed, 163 insertions, 0 deletions
diff --git a/src/libcoopgamma.c b/src/libcoopgamma.c index 1d7efa1..6b5ae3c 100644 --- a/src/libcoopgamma.c +++ b/src/libcoopgamma.c @@ -1390,6 +1390,28 @@ static char* next_line(libcoopgamma_context_t* restrict ctx) } +static char* next_payload(libcoopgamma_context_t* restrict ctx, size_t* n) +{ +} + + +/** + * Check whether the server sent an error, if so copy it to `ctx` + * + * This function will also reports EBADMSG if the message ID + * that the message is a response to does not match the request + * information, or if it is missing + * + * @param ctx The state of the library, must be connected + * @param async Information about the request + * @return 1 if the server sent an error, 0 on success, -1 on failure. + * Information about failure is copied `ctx`. + */ +static int check_error(libcoopgamma_context_t* restrict ctx, libcoopgamma_async_context_t* restrict async) +{ +} + + /** * List all available CRTC:s, send request part * @@ -1431,6 +1453,62 @@ int libcoopgamma_get_crtcs_send(libcoopgamma_context_t* restrict ctx, char** libcoopgamma_get_crtcs_recv(libcoopgamma_context_t* restrict ctx, libcoopgamma_async_context_t* restrict async) { + char* line; + char* payload; + char* end; + int command_ok = 0; + size_t i, n, lines, len, length; + char** rc; + + if (check_error(ctx, async)) + return NULL; + + for (;;) + { + line = next_line(ctx); + if (!*line) + break; + else if (!strcmp(line, "Command: crtc-enumeration")) + command_ok = 1; + } + + payload = next_payload(ctx, &n); + + if (!command_ok || ((n > 0) && (payload[n - 1] != '\n'))) + { + errno = EBADMSG; + copy_errno(ctx); + return NULL; + } + + line = payload; + end = payload + n; + lines = length = 0; + while (line != end) + { + lines += 1; + length += len = (size_t)(strchr(line, '\n') + 1 - line); + line += len; + line[-1] = '\0'; + } + + rc = malloc((lines + 1) * sizeof(char*) + length); + if (rc == NULL) + { + copy_errno(ctx); + return NULL; + } + + line = ((char*)rc) + (lines + 1) * sizeof(char*); + memcpy(line, payload, length); + rc[lines] = NULL; + for (i = 0; i < lines; i++) + { + rc[i] = line; + line = strchr(line, '\0') + 1; + } + + return rc; } @@ -1482,6 +1560,91 @@ int libcoopgamma_get_gamma_info_recv(libcoopgamma_crtc_info_t* restrict info, libcoopgamma_context_t* restrict ctx, libcoopgamma_async_context_t* restrict async) { + char temp[3 * sizeof(size_t) + 1]; + char* line; + char* value; + size_t _n; + int have_cooperative = 0; + int have_depth = 0; + int have_red_size = 0; + int have_green_size = 0; + int have_blue_size = 0; + int have_gamma_support = 0; + int bad = 0, r = 0, g = 0; + + if (check_error(ctx, async)) + return -1; + + info->cooperative = 0; /* Should be in the response, but ... */ + + for (;;) + { + line = next_line(ctx); + value = strchr(line, ':') + 2; + if (!*line) + break; + else if (strstr(line, "Cooperative: ") == line) + { + have_cooperative = 1 + !!have_cooperative; + if (!strcmp(value, "yes")) info->cooperative = 1; + else if (!strcmp(value, "no")) info->cooperative = 0; + else + bad = 1; + } + else if (strstr(line, "Depth: ") == line) + { + have_depth = 1 + !!have_depth; + if (!strcmp(value, "8")) info->depth = LIBCOOPGAMMA_UINT8; + else if (!strcmp(value, "16")) info->depth = LIBCOOPGAMMA_UINT16; + else if (!strcmp(value, "32")) info->depth = LIBCOOPGAMMA_UINT32; + else if (!strcmp(value, "64")) info->depth = LIBCOOPGAMMA_UINT64; + else if (!strcmp(value, "f")) info->depth = LIBCOOPGAMMA_FLOAT; + else if (!strcmp(value, "d")) info->depth = LIBCOOPGAMMA_DOUBLE; + else + bad = 1; + } + else if (strstr(line, "Gamma support: ") == line) + { + have_gamma_support = 1 + !!have_gamma_support; + if (!strcmp(value, "yes")) info->supported = LIBCOOPGAMMA_YES; + else if (!strcmp(value, "no")) info->supported = LIBCOOPGAMMA_NO; + else if (!strcmp(value, "maybe")) info->supported = LIBCOOPGAMMA_MAYBE; + else + bad = 1; + } + else if (((r = (strstr(line, "Red size: ") == line))) || + ((g = (strstr(line, "Green size: ") == line))) || + (strstr(line, "Blue size: ") == line)) + { + size_t* out; + if (r) have_red_size = 1 + !!have_red_size, out = &(info->red_size); + else if (g) have_green_size = 1 + !!have_green_size, out = &(info->green_size); + else have_blue_size = 1 + !!have_blue_size, out = &(info->blue_size); + *out = (size_t)atol(value); + sprintf(temp, "%zu", *out); + if (strcmp(value, temp)) + bad = 1; + } + } + + (void) next_payload(ctx, &_n); + + if (bad || (have_gamma_support != 1)) + { + errno = EBADMSG; + copy_errno(ctx); + return -1; + } + if (info->supported != LIBCOOPGAMMA_NO) + if ((have_cooperative > 1) || (have_depth != 1) || (have_gamma_support != 1) || + (have_red_size != 1) || (have_green_size != 1) || (have_blue_size != 1)) + { + errno = EBADMSG; + copy_errno(ctx); + return -1; + } + + return 0; } |