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Diffstat (limited to 'src/libcoopgamma.c')
| -rw-r--r-- | src/libcoopgamma.c | 802 |
1 files changed, 802 insertions, 0 deletions
diff --git a/src/libcoopgamma.c b/src/libcoopgamma.c new file mode 100644 index 0000000..5f71891 --- /dev/null +++ b/src/libcoopgamma.c @@ -0,0 +1,802 @@ +/** + * libcoopgamma -- Library for interfacing with cooperative gamma servers + * Copyright (C) 2016 Mattias Andrée (maandree@kth.se) + * + * This library is free software: you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation, either version 3 of the License, or + * (at your option) any later version. + * + * This library is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this library. If not, see <http://www.gnu.org/licenses/>. + */ +#include "libcoopgamma.h" + +#include <sys/socket.h> +#include <stdlib.h> +#include <string.h> +#include <unistd.h> + + + +#define SUBBUF \ + (buf ? buf + off : NULL) + +#define MARSHAL_PROLOGUE \ + char* restrict buf = vbuf; \ + size_t off = 0; + +#define UNMARSHAL_PROLOGUE \ + const char* restrict buf = vbuf; \ + size_t off = 0; + +#define MARSHAL_EPILOGUE \ + return off + +#define UNMARSHAL_EPILOGUE \ + return *np = off, LIBCOOPGAMMA_SUCCESS + +#define marshal_prim(datum, type) \ + ((buf != NULL ? *(type*)(buf + off) = (datum) : 0), off += sizeof(type)) + +#define unmarshal_prim(datum, type) \ + ((datum) = *(type*)(buf + off), off += sizeof(type)) + +#define marshal_version(version) \ + marshal_prim(version, int) + +#define unmarshal_version(version) \ + do \ + { \ + int version__; \ + unmarshal_prim(version__, int); \ + if (version__ < version) \ + return LIBCOOPGAMMA_INCOMPATIBLE_DOWNGRADE; \ + if (version__ > version) \ + return LIBCOOPGAMMA_INCOMPATIBLE_UPGRADE; \ + } \ + while (0) + +#define marshal_buffer(data, n) \ + ((buf != NULL ? (memcpy(buf + off, (data), (n)), 0) : 0), off += (n)) + +#define unmarshal_buffer(data, n) \ + do \ + { \ + (data) = malloc(n); \ + if ((data) == NULL) \ + return LIBCOOPGAMMA_ERRNO_SET; \ + memcpy((data), buf + off, (n)); \ + off += (n); \ + } \ + while (0) + +#define marshal_string(datum) \ + ((datum) == NULL ? marshal_prim(1, char) : \ + (marshal_prim(0, char), marshal_buffer(datum, strlen(datum) + 1))) + +#define unmarshal_string(datum) \ + do \ + { \ + char nonnull__; \ + unmarshal_prim(nonnull__, char); \ + if (nonnull__) \ + unmarshal_buffer((datum), strlen(buf + off) + 1); \ + else \ + (datum) = NULL; \ + } \ + while (0) + + + +/** + * Initialise a `libcoopgamma_ramps8_t`, `libcoopgamma_ramps16_t`, `libcoopgamma_ramps32_t`, + * `libcoopgamma_ramps64_t`, `libcoopgamma_rampsf_t`, or `libcoopgamma_rampsd_t` + * + * `this->red_size`, `this->green_size`, and `this->blue_size` must already be set + * + * @param this The record to initialise + * @para width The `sizeof(*(this->red))` + * @return Zero on success, -1 on error + */ +int (libcoopgamma_ramps_initialise)(void* restrict this, size_t width) +{ + libcoopgamma_ramps8_t* restrict this8 = (libcoopgamma_ramps8_t* restrict)this; + this8->red = this8->green = this8->blue = NULL; + this8->red = malloc((this8->red_size + this8->green_size + this8->blue_size) * width); + if (this8->red == NULL) + return -1; + this8->green = this8->red + this8->red_size * width; + this8->blue = this8->green + this8->green_size * width; + return 0; +} + + +/** + * Release all resources allocated to a `libcoopgamma_ramps8_t`, `libcoopgamma_ramps16_t`, + * `libcoopgamma_ramps32_t`, `libcoopgamma_ramps64_t`, `libcoopgamma_rampsf_t`, or + * `libcoopgamma_rampsd_t`, the allocation of the record itself is not freed + * + * Always call this function after failed call to `libcoopgamma_ramps_initialise` + * or failed call to `libcoopgamma_ramps_unmarshal` + * + * @param this The record to destroy + */ +void libcoopgamma_ramps_destroy(void* restrict this) +{ + libcoopgamma_ramps8_t* restrict this8 = (libcoopgamma_ramps8_t* restrict)this; + free(this8->red); + this8->red = this8->green = this8->blue = NULL; +} + + +/** + * Marshal a `libcoopgamma_ramps8_t`, `libcoopgamma_ramps16_t`, `libcoopgamma_ramps32_t`, + * `libcoopgamma_ramps64_t`, `libcoopgamma_rampsf_t`, or `libcoopgamma_rampsd_t` into a buffer + * + * @param this The record to marshal + * @param vbuf The output buffer, `NULL` to only measure + * how large this buffer has to be + * @param width The `sizeof(*(this->red))` + * @return The number of marshalled bytes, or if `buf == NULL`, + * how many bytes would be marshalled if `buf != NULL` + */ +size_t (libcoopgamma_ramps_marshal)(const void* restrict this, void* restrict vbuf, size_t width) +{ + libcoopgamma_ramps8_t* restrict this8 = (libcoopgamma_ramps8_t* restrict)this; + MARSHAL_PROLOGUE; + marshal_version(LIBCOOPGAMMA_RAMPS_VERSION); + marshal_prim(this8->red_size, size_t); + marshal_prim(this8->green_size, size_t); + marshal_prim(this8->blue_size, size_t); + marshal_buffer(this8->red, (this8->red_size + this8->green_size + this8->blue_size) * width); + MARSHAL_EPILOGUE; +} + + +/** + * Unmarshal a `libcoopgamma_ramps8_t`, `libcoopgamma_ramps16_t`, `libcoopgamma_ramps32_t`, + * `libcoopgamma_ramps64_t`, `libcoopgamma_rampsf_t`, or `libcoopgamma_rampsd_t` from a buffer + * + * @param this The output paramater for unmarshalled record + * @param vbuf The buffer with the marshalled record + * @param np Output parameter for the number of unmarshalled bytes, undefined on failure + * @param width The `sizeof(*(this->red))` + * @return `LIBCOOPGAMMA_SUCCESS` (0), `LIBCOOPGAMMA_INCOMPATIBLE_DOWNGRADE`, + * `LIBCOOPGAMMA_INCOMPATIBLE_UPGRADE`, or `LIBCOOPGAMMA_ERRNO_SET` + */ +int (libcoopgamma_ramps_unmarshal)(void* restrict this, const void* restrict vbuf, + size_t* restrict np, size_t width) +{ + libcoopgamma_ramps8_t* restrict this8 = (libcoopgamma_ramps8_t* restrict)this; + UNMARSHAL_PROLOGUE; + unmarshal_version(LIBCOOPGAMMA_RAMPS_VERSION); + unmarshal_prim(this8->red_size, size_t); + unmarshal_prim(this8->green_size, size_t); + unmarshal_prim(this8->blue_size, size_t); + unmarshal_buffer(this8->red, (this8->red_size + this8->green_size + this8->blue_size) * width); + UNMARSHAL_EPILOGUE; +} + + + +/** + * Initialise a `libcoopgamma_filter_t` + * + * @param this The record to initialise + * @return Zero on success, -1 on error + */ +int libcoopgamma_filter_initialise(libcoopgamma_filter_t* restrict this) +{ + memset(this, 0, sizeof(*this)); + return 0; +} + + +/** + * Release all resources allocated to a `libcoopgamma_filter_t`, + * the allocation of the record itself is not freed + * + * Always call this function after failed call to `libcoopgamma_filter_initialise` + * or failed call to `libcoopgamma_filter_unmarshal` + * + * @param this The record to destroy + */ +void libcoopgamma_filter_destroy(libcoopgamma_filter_t* restrict this) +{ + free(this->crtc); + free(this->class); + free(this->ramps.u8.red); + memset(this, 0, sizeof(*this)); +} + + +/** + * Marshal a `libcoopgamma_filter_t` into a buffer + * + * @param this The record to marshal + * @param vbuf The output buffer, `NULL` to only measure + * how large this buffer has to be + * @return The number of marshalled bytes, or if `buf == NULL`, + * how many bytes would be marshalled if `buf != NULL` + */ +size_t libcoopgamma_filter_marshal(const libcoopgamma_filter_t* restrict this, void* restrict vbuf) +{ + MARSHAL_PROLOGUE; + marshal_version(LIBCOOPGAMMA_FILTER_VERSION); + marshal_version(LIBCOOPGAMMA_DEPTH_VERSION); + marshal_version(LIBCOOPGAMMA_LIFESPAN_VERSION); + marshal_prim(this->depth, libcoopgamma_depth_t); + marshal_prim(this->priority, int64_t); + marshal_string(this->crtc); + marshal_string(this->class); + marshal_prim(this->lifespan, libcoopgamma_lifespan_t); + switch (this->depth) + { + case LIBCOOPGAMMA_UINT8: off += libcoopgamma_ramps_marshal(&(this->ramps.u8), SUBBUF); break; + case LIBCOOPGAMMA_UINT16: off += libcoopgamma_ramps_marshal(&(this->ramps.u16), SUBBUF); break; + case LIBCOOPGAMMA_UINT32: off += libcoopgamma_ramps_marshal(&(this->ramps.u32), SUBBUF); break; + case LIBCOOPGAMMA_UINT64: off += libcoopgamma_ramps_marshal(&(this->ramps.u64), SUBBUF); break; + case LIBCOOPGAMMA_FLOAT: off += libcoopgamma_ramps_marshal(&(this->ramps.f), SUBBUF); break; + case LIBCOOPGAMMA_DOUBLE: off += libcoopgamma_ramps_marshal(&(this->ramps.d), SUBBUF); break; + default: + break; + } + MARSHAL_EPILOGUE; +} + + +/** + * Unmarshal a `libcoopgamma_filter_t` from a buffer + * + * @param this The output paramater for unmarshalled record + * @param vbuf The buffer with the marshalled record + * @param np Output parameter for the number of unmarshalled bytes, undefined on failure + * @return `LIBCOOPGAMMA_SUCCESS` (0), `LIBCOOPGAMMA_INCOMPATIBLE_DOWNGRADE`, + * `LIBCOOPGAMMA_INCOMPATIBLE_UPGRADE`, or `LIBCOOPGAMMA_ERRNO_SET` + */ +int libcoopgamma_filter_unmarshal(libcoopgamma_filter_t* restrict this, + const void* restrict vbuf, size_t* restrict np) +{ + int r = LIBCOOPGAMMA_SUCCESS; + size_t n = 0; + UNMARSHAL_PROLOGUE; + memset(this, 0, sizeof(*this)); + unmarshal_version(LIBCOOPGAMMA_FILTER_VERSION); + unmarshal_version(LIBCOOPGAMMA_DEPTH_VERSION); + unmarshal_version(LIBCOOPGAMMA_LIFESPAN_VERSION); + unmarshal_prim(this->depth, libcoopgamma_depth_t); + unmarshal_prim(this->priority, int64_t); + unmarshal_string(this->crtc); + unmarshal_string(this->class); + unmarshal_prim(this->lifespan, libcoopgamma_lifespan_t); + switch (this->depth) + { + case LIBCOOPGAMMA_UINT8: r = libcoopgamma_ramps_unmarshal(&(this->ramps.u8), SUBBUF, &n); break; + case LIBCOOPGAMMA_UINT16: r = libcoopgamma_ramps_unmarshal(&(this->ramps.u16), SUBBUF, &n); break; + case LIBCOOPGAMMA_UINT32: r = libcoopgamma_ramps_unmarshal(&(this->ramps.u32), SUBBUF, &n); break; + case LIBCOOPGAMMA_UINT64: r = libcoopgamma_ramps_unmarshal(&(this->ramps.u64), SUBBUF, &n); break; + case LIBCOOPGAMMA_FLOAT: r = libcoopgamma_ramps_unmarshal(&(this->ramps.f), SUBBUF, &n); break; + case LIBCOOPGAMMA_DOUBLE: r = libcoopgamma_ramps_unmarshal(&(this->ramps.d), SUBBUF, &n); break; + default: + break; + } + if (r != LIBCOOPGAMMA_SUCCESS) + return r; + off += n; + UNMARSHAL_EPILOGUE; +} + + + +/** + * Initialise a `libcoopgamma_crtc_info_t` + * + * @param this The record to initialise + * @return Zero on success, -1 on error + */ +int libcoopgamma_crtc_info_initialise(libcoopgamma_crtc_info_t* restrict this) +{ + memset(this, 0, sizeof(*this)); + return 0; +} + + +/** + * Release all resources allocated to a `libcoopgamma_crtc_info_t`, + * the allocation of the record itself is not freed + * + * Always call this function after failed call to `libcoopgamma_crtc_info_initialise` + * or failed call to `libcoopgamma_crtc_info_unmarshal` + * + * @param this The record to destroy + */ +void libcoopgamma_crtc_info_destroy(libcoopgamma_crtc_info_t* restrict this) +{ + (void) this; +} + + +/** + * Marshal a `libcoopgamma_crtc_info_t` into a buffer + * + * @param this The record to marshal + * @param vbuf The output buffer, `NULL` to only measure + * how large this buffer has to be + * @return The number of marshalled bytes, or if `buf == NULL`, + * how many bytes would be marshalled if `buf != NULL` + */ +size_t libcoopgamma_crtc_info_marshal(const libcoopgamma_crtc_info_t* restrict this, void* restrict vbuf) +{ + MARSHAL_PROLOGUE; + marshal_version(LIBCOOPGAMMA_CRTC_INFO_VERSION); + marshal_version(LIBCOOPGAMMA_DEPTH_VERSION); + marshal_version(LIBCOOPGAMMA_SUPPORT_VERSION); + marshal_prim(this->cooperative, int); + marshal_prim(this->depth, libcoopgamma_depth_t); + marshal_prim(this->red_size, size_t); + marshal_prim(this->green_size, size_t); + marshal_prim(this->blue_size, size_t); + marshal_prim(this->supported, libcoopgamma_support_t); + MARSHAL_EPILOGUE; +} + + +/** + * Unmarshal a `libcoopgamma_crtc_info_t` from a buffer + * + * @param this The output paramater for unmarshalled record + * @param vbuf The buffer with the marshalled record + * @param np Output parameter for the number of unmarshalled bytes, undefined on failure + * @return `LIBCOOPGAMMA_SUCCESS` (0), `LIBCOOPGAMMA_INCOMPATIBLE_DOWNGRADE`, + * `LIBCOOPGAMMA_INCOMPATIBLE_UPGRADE`, or `LIBCOOPGAMMA_ERRNO_SET` + */ +int libcoopgamma_crtc_info_unmarshal(libcoopgamma_crtc_info_t* restrict this, + const void* restrict vbuf, size_t* restrict np) +{ + UNMARSHAL_PROLOGUE; + unmarshal_version(LIBCOOPGAMMA_CRTC_INFO_VERSION); + unmarshal_version(LIBCOOPGAMMA_DEPTH_VERSION); + unmarshal_version(LIBCOOPGAMMA_SUPPORT_VERSION); + unmarshal_prim(this->cooperative, int); + unmarshal_prim(this->depth, libcoopgamma_depth_t); + unmarshal_prim(this->red_size, size_t); + unmarshal_prim(this->green_size, size_t); + unmarshal_prim(this->blue_size, size_t); + unmarshal_prim(this->supported, libcoopgamma_support_t); + UNMARSHAL_EPILOGUE; +} + + + +/** + * Initialise a `libcoopgamma_filter_query_t` + * + * @param this The record to initialise + * @return Zero on success, -1 on error + */ +int libcoopgamma_filter_query_initialise(libcoopgamma_filter_query_t* restrict this) +{ + this->crtc = NULL; + this->coalesce = 0; + this->high_priority = INT64_MAX; + this->low_priority = INT64_MIN; + return 0; +} + + +/** + * Release all resources allocated to a `libcoopgamma_filter_query_t`, + * the allocation of the record itself is not freed + * + * Always call this function after failed call to `libcoopgamma_filter_query_initialise` + * or failed call to `libcoopgamma_filter_query_unmarshal` + * + * @param this The record to destroy + */ +void libcoopgamma_filter_query_destroy(libcoopgamma_filter_query_t* restrict this) +{ + free(this->crtc), this->crtc = NULL; +} + + +/** + * Marshal a `libcoopgamma_filter_query_t` into a buffer + * + * @param this The record to marshal + * @param vbuf The output buffer, `NULL` to only measure + * how large this buffer has to be + * @return The number of marshalled bytes, or if `buf == NULL`, + * how many bytes would be marshalled if `buf != NULL` + */ +size_t libcoopgamma_filter_query_marshal(const libcoopgamma_filter_query_t* restrict this, void* restrict vbuf) +{ + MARSHAL_PROLOGUE; + marshal_version(LIBCOOPGAMMA_FILTER_QUERY_VERSION); + marshal_string(this->crtc); + marshal_prim(this->coalesce, int); + marshal_prim(this->high_priority, int64_t); + marshal_prim(this->low_priority, int64_t); + MARSHAL_EPILOGUE; +} + + +/** + * Unmarshal a `libcoopgamma_filter_query_t` from a buffer + * + * @param this The output paramater for unmarshalled record + * @param vbuf The buffer with the marshalled record + * @param np Output parameter for the number of unmarshalled bytes, undefined on failure + * @return `LIBCOOPGAMMA_SUCCESS` (0), `LIBCOOPGAMMA_INCOMPATIBLE_DOWNGRADE`, + * `LIBCOOPGAMMA_INCOMPATIBLE_UPGRADE`, or `LIBCOOPGAMMA_ERRNO_SET` + */ +int libcoopgamma_filter_query_unmarshal(libcoopgamma_filter_query_t* restrict this, + const void* restrict vbuf, size_t* restrict np) +{ + UNMARSHAL_PROLOGUE; + this->crtc = NULL; + unmarshal_version(LIBCOOPGAMMA_FILTER_QUERY_VERSION); + unmarshal_string(this->crtc); + unmarshal_prim(this->coalesce, int); + unmarshal_prim(this->high_priority, int64_t); + unmarshal_prim(this->low_priority, int64_t); + UNMARSHAL_EPILOGUE; +} + + + +/** + * Initialise a `libcoopgamma_queried_filter_t` + * + * @param this The record to initialise + * @return Zero on success, -1 on error + */ +int libcoopgamma_queried_filter_initialise(libcoopgamma_queried_filter_t* restrict this) +{ + memset(this, 0, sizeof(*this)); + return 0; +} + + +/** + * Release all resources allocated to a `libcoopgamma_queried_filter_t`, + * the allocation of the record itself is not freed + * + * Always call this function after failed call to `libcoopgamma_queried_filter_initialise` + * or failed call to `libcoopgamma_queried_filter_unmarshal` + * + * @param this The record to destroy + */ +void libcoopgamma_queried_filter_destroy(libcoopgamma_queried_filter_t* restrict this) +{ + free(this->class), this->class = NULL; + libcoopgamma_ramps_destroy(&(this->ramps.u8)); +} + + +/** + * Marshal a `libcoopgamma_queried_filter_t` into a buffer + * + * @param this The record to marshal + * @param vbuf The output buffer, `NULL` to only measure + * how large this buffer has to be + * @param depth The type used of ramp stops + * @return The number of marshalled bytes, or if `buf == NULL`, + * how many bytes would be marshalled if `buf != NULL` + */ +size_t libcoopgamma_queried_filter_marshal(const libcoopgamma_queried_filter_t* restrict this, + void* restrict vbuf, libcoopgamma_depth_t depth) +{ + MARSHAL_PROLOGUE; + marshal_version(LIBCOOPGAMMA_QUERIED_FILTER_VERSION); + marshal_prim(this->priority, int64_t); + marshal_string(this->class); + switch (depth) + { + case LIBCOOPGAMMA_UINT8: off += libcoopgamma_ramps_marshal(&(this->ramps.u8), SUBBUF); break; + case LIBCOOPGAMMA_UINT16: off += libcoopgamma_ramps_marshal(&(this->ramps.u16), SUBBUF); break; + case LIBCOOPGAMMA_UINT32: off += libcoopgamma_ramps_marshal(&(this->ramps.u32), SUBBUF); break; + case LIBCOOPGAMMA_UINT64: off += libcoopgamma_ramps_marshal(&(this->ramps.u64), SUBBUF); break; + case LIBCOOPGAMMA_FLOAT: off += libcoopgamma_ramps_marshal(&(this->ramps.f), SUBBUF); break; + case LIBCOOPGAMMA_DOUBLE: off += libcoopgamma_ramps_marshal(&(this->ramps.d), SUBBUF); break; + default: + break; + } + MARSHAL_EPILOGUE; +} + + +/** + * Unmarshal a `libcoopgamma_queried_filter_t` from a buffer + * + * @param this The output paramater for unmarshalled record + * @param vbuf The buffer with the marshalled record + * @param np Output parameter for the number of unmarshalled bytes, undefined on failure + * @param depth The type used of ramp stops + * @return `LIBCOOPGAMMA_SUCCESS` (0), `LIBCOOPGAMMA_INCOMPATIBLE_DOWNGRADE`, + * `LIBCOOPGAMMA_INCOMPATIBLE_UPGRADE`, or `LIBCOOPGAMMA_ERRNO_SET` + */ +int libcoopgamma_queried_filter_unmarshal(libcoopgamma_queried_filter_t* restrict this, + const void* restrict vbuf, size_t* restrict np, + libcoopgamma_depth_t depth) +{ + int r = LIBCOOPGAMMA_SUCCESS; + size_t n = 0; + UNMARSHAL_PROLOGUE; + memset(this, 0, sizeof(*this)); + unmarshal_version(LIBCOOPGAMMA_QUERIED_FILTER_VERSION); + unmarshal_prim(this->priority, int64_t); + unmarshal_string(this->class); + switch (depth) + { + case LIBCOOPGAMMA_UINT8: r = libcoopgamma_ramps_unmarshal(&(this->ramps.u8), SUBBUF, &n); break; + case LIBCOOPGAMMA_UINT16: r = libcoopgamma_ramps_unmarshal(&(this->ramps.u16), SUBBUF, &n); break; + case LIBCOOPGAMMA_UINT32: r = libcoopgamma_ramps_unmarshal(&(this->ramps.u32), SUBBUF, &n); break; + case LIBCOOPGAMMA_UINT64: r = libcoopgamma_ramps_unmarshal(&(this->ramps.u64), SUBBUF, &n); break; + case LIBCOOPGAMMA_FLOAT: r = libcoopgamma_ramps_unmarshal(&(this->ramps.f), SUBBUF, &n); break; + case LIBCOOPGAMMA_DOUBLE: r = libcoopgamma_ramps_unmarshal(&(this->ramps.d), SUBBUF, &n); break; + default: + break; + } + if (r != LIBCOOPGAMMA_SUCCESS) + return r; + off += n; + UNMARSHAL_EPILOGUE; +} + + + +/** + * Initialise a `libcoopgamma_filter_table_t` + * + * @param this The record to initialise + * @return Zero on success, -1 on error + */ +int libcoopgamma_filter_table_initialise(libcoopgamma_filter_table_t* restrict this) +{ + memset(this, 0, sizeof(*this)); + return 0; +} + + +/** + * Release all resources allocated to a `libcoopgamma_filter_table_t`, + * the allocation of the record itself is not freed + * + * Always call this function after failed call to `libcoopgamma_filter_table_initialise` + * or failed call to `libcoopgamma_filter_table_unmarshal` + * + * @param this The record to destroy + */ +void libcoopgamma_filter_table_destroy(libcoopgamma_filter_table_t* restrict this) +{ + while (this->filter_count) + libcoopgamma_queried_filter_destroy(this->filters + --(this->filter_count)); + free(this->filters), this->filters = NULL; +} + + +/** + * Marshal a `libcoopgamma_filter_table_t` into a buffer + * + * @param this The record to marshal + * @param vbuf The output buffer, `NULL` to only measure + * how large this buffer has to be + * @return The number of marshalled bytes, or if `buf == NULL`, + * how many bytes would be marshalled if `buf != NULL` + */ +size_t libcoopgamma_filter_table_marshal(const libcoopgamma_filter_table_t* restrict this, void* restrict vbuf) +{ + size_t i; + MARSHAL_PROLOGUE; + marshal_version(LIBCOOPGAMMA_FILTER_TABLE_VERSION); + marshal_version(LIBCOOPGAMMA_DEPTH_VERSION); + marshal_prim(this->depth, libcoopgamma_depth_t); + marshal_prim(this->red_size, size_t); + marshal_prim(this->green_size, size_t); + marshal_prim(this->blue_size, size_t); + marshal_prim(this->filter_count, size_t); + for (i = 0; i < this->filter_count; i++) + off += libcoopgamma_queried_filter_marshal(this->filters + i, SUBBUF, this->depth); + MARSHAL_EPILOGUE; +} + + +/** + * Unmarshal a `libcoopgamma_filter_table_t` from a buffer + * + * @param this The output paramater for unmarshalled record + * @param vbuf The buffer with the marshalled record + * @param np Output parameter for the number of unmarshalled bytes, undefined on failure + * @return `LIBCOOPGAMMA_SUCCESS` (0), `LIBCOOPGAMMA_INCOMPATIBLE_DOWNGRADE`, + * `LIBCOOPGAMMA_INCOMPATIBLE_UPGRADE`, or `LIBCOOPGAMMA_ERRNO_SET` + */ +int libcoopgamma_filter_table_unmarshal(libcoopgamma_filter_table_t* restrict this, + const void* restrict vbuf, size_t* restrict np) +{ + size_t i, n, fn; + int r; + UNMARSHAL_PROLOGUE; + this->filter_count = 0; + this->filters = NULL; + unmarshal_version(LIBCOOPGAMMA_FILTER_TABLE_VERSION); + unmarshal_version(LIBCOOPGAMMA_DEPTH_VERSION); + unmarshal_prim(this->depth, libcoopgamma_depth_t); + unmarshal_prim(this->red_size, size_t); + unmarshal_prim(this->green_size, size_t); + unmarshal_prim(this->blue_size, size_t); + unmarshal_prim(fn, size_t); + this->filters = malloc(fn * sizeof(*(this->filters))); + if (this->filters == NULL) + return LIBCOOPGAMMA_ERRNO_SET; + for (i = 0; i < fn; i++) + { + r = libcoopgamma_queried_filter_unmarshal(this->filters + i, SUBBUF, &n, this->depth); + if (r != LIBCOOPGAMMA_SUCCESS) + return r; + off += n; + this->filter_count += 1; + } + UNMARSHAL_EPILOGUE; +} + + + +/** + * Initialise a `libcoopgamma_error_t` + * + * @param this The record to initialise + * @return Zero on success, -1 on error + */ +int libcoopgamma_error_initialise(libcoopgamma_error_t* restrict this) +{ + this->number = 0; + this->custom = 0; + this->description = NULL; + return 0; +} + + +/** + * Release all resources allocated to a `libcoopgamma_error_t`, + * the allocation of the record itself is not freed + * + * Always call this function after failed call to `libcoopgamma_error_initialise` + * or failed call to `libcoopgamma_error_unmarshal` + * + * @param this The record to destroy + */ +void libcoopgamma_error_destroy(libcoopgamma_error_t* restrict this) +{ + free(this->description), this->description = NULL; +} + + +/** + * Marshal a `libcoopgamma_error_t` into a buffer + * + * @param this The record to marshal + * @param vbuf The output buffer, `NULL` to only measure + * how large this buffer has to be + * @return The number of marshalled bytes, or if `buf == NULL`, + * how many bytes would be marshalled if `buf != NULL` + */ +size_t libcoopgamma_error_marshal(const libcoopgamma_error_t* restrict this, void* restrict vbuf) +{ + MARSHAL_PROLOGUE; + marshal_version(LIBCOOPGAMMA_ERROR_VERSION); + marshal_prim(this->number, uint64_t); + marshal_prim(this->custom, int); + marshal_string(this->description); + MARSHAL_EPILOGUE; +} + + +/** + * Unmarshal a `libcoopgamma_error_t` from a buffer + * + * @param this The output paramater for unmarshalled record + * @param vbuf The buffer with the marshalled record + * @param np Output parameter for the number of unmarshalled bytes, undefined on failure + * @return `LIBCOOPGAMMA_SUCCESS` (0), `LIBCOOPGAMMA_INCOMPATIBLE_DOWNGRADE`, + * `LIBCOOPGAMMA_INCOMPATIBLE_UPGRADE`, or `LIBCOOPGAMMA_ERRNO_SET` + */ +int libcoopgamma_error_unmarshal(libcoopgamma_error_t* restrict this, + const void* restrict vbuf, size_t* restrict np) +{ + UNMARSHAL_PROLOGUE; + this->description = NULL; + unmarshal_version(LIBCOOPGAMMA_ERROR_VERSION); + unmarshal_prim(this->number, uint64_t); + unmarshal_prim(this->custom, int); + unmarshal_string(this->description); + UNMARSHAL_EPILOGUE; +} + + + +/** + * Initialise a `libcoopgamma_context_t` + * + * @param this The record to initialise + * @return Zero on success, -1 on error + */ +int libcoopgamma_context_initialise(libcoopgamma_context_t* restrict this) +{ + this->fd = -1; + libcoopgamma_error_initialise(&(this->error)); + return 0; +} + + +/** + * Release all resources allocated to a `libcoopgamma_context_t`, + * the allocation of the record itself is not freed + * + * Always call this function after failed call to `libcoopgamma_context_initialise` + * or failed call to `libcoopgamma_context_unmarshal` + * + * @param this The record to destroy + * @param disconnect Disconnect from the server? + */ +void libcoopgamma_context_destroy(libcoopgamma_context_t* restrict this, int disconnect) +{ + if (disconnect && (this->fd >= 0)) + { + shutdown(this->fd, SHUT_RDWR); + close(this->fd); + } + this->fd = -1; + libcoopgamma_error_destroy(&(this->error)); +} + + +/** + * Marshal a `libcoopgamma_context_t` into a buffer + * + * @param this The record to marshal + * @param vbuf The output buffer, `NULL` to only measure + * how large this buffer has to be + * @return The number of marshalled bytes, or if `buf == NULL`, + * how many bytes would be marshalled if `buf != NULL` + */ +size_t libcoopgamma_context_marshal(const libcoopgamma_context_t* restrict this, void* restrict vbuf) +{ + MARSHAL_PROLOGUE; + marshal_version(LIBCOOPGAMMA_CONTEXT_VERSION); + marshal_prim(this->fd, int); + off += libcoopgamma_error_marshal(&(this->error), SUBBUF); + MARSHAL_EPILOGUE; +} + + +/** + * Unmarshal a `libcoopgamma_context_t` from a buffer + * + * @param this The output paramater for unmarshalled record + * @param vbuf The buffer with the marshalled record + * @param np Output parameter for the number of unmarshalled bytes, undefined on failure + * @return `LIBCOOPGAMMA_SUCCESS` (0), `LIBCOOPGAMMA_INCOMPATIBLE_DOWNGRADE`, + * `LIBCOOPGAMMA_INCOMPATIBLE_UPGRADE`, or `LIBCOOPGAMMA_ERRNO_SET` + */ +int libcoopgamma_context_unmarshal(libcoopgamma_context_t* restrict this, + const void* restrict vbuf, size_t* restrict np) +{ + size_t n; + int r; + UNMARSHAL_PROLOGUE; + memset(this, 0, sizeof(*this)); + unmarshal_version(LIBCOOPGAMMA_CONTEXT_VERSION); + unmarshal_prim(this->fd, int); + r = libcoopgamma_error_unmarshal(&(this->error), SUBBUF, &n); + if (r != LIBCOOPGAMMA_SUCCESS) + return r; + off += n; + UNMARSHAL_EPILOGUE; +} + |