| 1 | /* |
| 2 | Copyright (c) 2012, Broadcom Europe Ltd |
| 3 | All rights reserved. |
| 4 | |
| 5 | Redistribution and use in source and binary forms, with or without |
| 6 | modification, are permitted provided that the following conditions are met: |
| 7 | * Redistributions of source code must retain the above copyright |
| 8 | notice, this list of conditions and the following disclaimer. |
| 9 | * Redistributions in binary form must reproduce the above copyright |
| 10 | notice, this list of conditions and the following disclaimer in the |
| 11 | documentation and/or other materials provided with the distribution. |
| 12 | * Neither the name of the copyright holder nor the |
| 13 | names of its contributors may be used to endorse or promote products |
| 14 | derived from this software without specific prior written permission. |
| 15 | |
| 16 | THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND |
| 17 | ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED |
| 18 | WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE |
| 19 | DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY |
| 20 | DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES |
| 21 | (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; |
| 22 | LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND |
| 23 | ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| 24 | (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS |
| 25 | SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| 26 | */ |
| 27 | #include "interface/mmal/mmal.h" |
| 28 | #include "mmal_encodings.h" |
| 29 | #include "mmal_util.h" |
| 30 | #include "mmal_logging.h" |
| 31 | #include <string.h> |
| 32 | #include <stdio.h> |
| 33 | |
| 34 | #define STATUS_TO_STR(x) { MMAL_##x, #x } |
| 35 | |
| 36 | static struct { |
| 37 | MMAL_STATUS_T status; |
| 38 | const char *str; |
| 39 | } status_to_string_map[] = |
| 40 | { |
| 41 | STATUS_TO_STR(SUCCESS), |
| 42 | STATUS_TO_STR(ENOMEM), |
| 43 | STATUS_TO_STR(ENOSPC), |
| 44 | STATUS_TO_STR(EINVAL), |
| 45 | STATUS_TO_STR(ENOSYS), |
| 46 | STATUS_TO_STR(ENOENT), |
| 47 | STATUS_TO_STR(ENXIO), |
| 48 | STATUS_TO_STR(EIO), |
| 49 | STATUS_TO_STR(ESPIPE), |
| 50 | STATUS_TO_STR(ECORRUPT), |
| 51 | STATUS_TO_STR(ENOTREADY), |
| 52 | STATUS_TO_STR(ECONFIG), |
| 53 | {0, 0} |
| 54 | }; |
| 55 | |
| 56 | const char *mmal_status_to_string(MMAL_STATUS_T status) |
| 57 | { |
| 58 | unsigned i; |
| 59 | |
| 60 | for (i=0; status_to_string_map[i].str; i++) |
| 61 | if (status_to_string_map[i].status == status) |
| 62 | break; |
| 63 | |
| 64 | return status_to_string_map[i].str ? status_to_string_map[i].str : "UNKNOWN" ; |
| 65 | } |
| 66 | |
| 67 | static struct { |
| 68 | uint32_t encoding; |
| 69 | uint32_t pitch_num; |
| 70 | uint32_t pitch_den; |
| 71 | uint32_t alignment; |
| 72 | } pixel_pitch[] = |
| 73 | { |
| 74 | {MMAL_ENCODING_I420, 1, 1, 1}, |
| 75 | {MMAL_ENCODING_YV12, 1, 1, 1}, |
| 76 | {MMAL_ENCODING_I422, 1, 1, 1}, |
| 77 | {MMAL_ENCODING_NV21, 1, 1, 1}, |
| 78 | {MMAL_ENCODING_NV12, 1, 1, 1}, |
| 79 | {MMAL_ENCODING_ARGB, 4, 1, 1}, |
| 80 | {MMAL_ENCODING_RGBA, 4, 1, 1}, |
| 81 | {MMAL_ENCODING_RGB32, 4, 1, 1}, |
| 82 | {MMAL_ENCODING_ABGR, 4, 1, 1}, |
| 83 | {MMAL_ENCODING_BGRA, 4, 1, 1}, |
| 84 | {MMAL_ENCODING_BGR32, 4, 1, 1}, |
| 85 | {MMAL_ENCODING_RGB16, 2, 1, 1}, |
| 86 | {MMAL_ENCODING_RGB24, 3, 1, 1}, |
| 87 | {MMAL_ENCODING_BGR16, 2, 1, 1}, |
| 88 | {MMAL_ENCODING_BGR24, 3, 1, 1}, |
| 89 | {MMAL_ENCODING_I420_16, 2, 1, 1}, |
| 90 | {MMAL_ENCODING_I420_10, 2, 1, 1}, |
| 91 | {MMAL_ENCODING_I420_S, 1, 1, 1}, |
| 92 | |
| 93 | {MMAL_ENCODING_I420_SLICE, 1, 1, 1}, |
| 94 | {MMAL_ENCODING_I422_SLICE, 1, 1, 1}, |
| 95 | {MMAL_ENCODING_ARGB_SLICE, 4, 1, 1}, |
| 96 | {MMAL_ENCODING_RGBA_SLICE, 4, 1, 1}, |
| 97 | {MMAL_ENCODING_RGB32_SLICE, 4, 1, 1}, |
| 98 | {MMAL_ENCODING_ABGR_SLICE, 4, 1, 1}, |
| 99 | {MMAL_ENCODING_BGRA_SLICE, 4, 1, 1}, |
| 100 | {MMAL_ENCODING_BGR32_SLICE, 4, 1, 1}, |
| 101 | {MMAL_ENCODING_RGB16_SLICE, 2, 1, 1}, |
| 102 | {MMAL_ENCODING_RGB24_SLICE, 3, 1, 1}, |
| 103 | {MMAL_ENCODING_BGR16_SLICE, 2, 1, 1}, |
| 104 | {MMAL_ENCODING_BGR24_SLICE, 3, 1, 1}, |
| 105 | |
| 106 | {MMAL_ENCODING_YUYV, 2, 1, 1}, |
| 107 | {MMAL_ENCODING_YVYU, 2, 1, 1}, |
| 108 | {MMAL_ENCODING_UYVY, 2, 1, 1}, |
| 109 | {MMAL_ENCODING_VYUY, 2, 1, 1}, |
| 110 | |
| 111 | // Bayer formats, the resulting alignment must also be a multiple of 16. |
| 112 | // Camplus padded to a multiple of 32, so let's copy that. |
| 113 | {MMAL_ENCODING_BAYER_SBGGR8, 1, 1, 32}, |
| 114 | {MMAL_ENCODING_BAYER_SGBRG8, 1, 1, 32}, |
| 115 | {MMAL_ENCODING_BAYER_SGRBG8, 1, 1, 32}, |
| 116 | {MMAL_ENCODING_BAYER_SRGGB8, 1, 1, 32}, |
| 117 | {MMAL_ENCODING_BAYER_SBGGR10DPCM8, 1, 1, 32}, |
| 118 | {MMAL_ENCODING_BAYER_SGBRG10DPCM8, 1, 1, 32}, |
| 119 | {MMAL_ENCODING_BAYER_SGRBG10DPCM8, 1, 1, 32}, |
| 120 | {MMAL_ENCODING_BAYER_SRGGB10DPCM8, 1, 1, 32}, |
| 121 | {MMAL_ENCODING_BAYER_SBGGR10P, 10,8, 32}, |
| 122 | {MMAL_ENCODING_BAYER_SGRBG10P, 10,8, 32}, |
| 123 | {MMAL_ENCODING_BAYER_SGBRG10P, 10,8, 32}, |
| 124 | {MMAL_ENCODING_BAYER_SRGGB10P, 10,8, 32}, |
| 125 | {MMAL_ENCODING_BAYER_SBGGR12P, 12,8, 32}, |
| 126 | {MMAL_ENCODING_BAYER_SGRBG12P, 12,8, 32}, |
| 127 | {MMAL_ENCODING_BAYER_SGBRG12P, 12,8, 32}, |
| 128 | {MMAL_ENCODING_BAYER_SRGGB12P, 12,8, 32}, |
| 129 | {MMAL_ENCODING_BAYER_SBGGR16, 2, 1, 32}, |
| 130 | {MMAL_ENCODING_BAYER_SGBRG16, 2, 1, 32}, |
| 131 | {MMAL_ENCODING_BAYER_SGRBG16, 2, 1, 32}, |
| 132 | {MMAL_ENCODING_BAYER_SRGGB16, 2, 1, 32}, |
| 133 | |
| 134 | /* {MMAL_ENCODING_YUVUV128, 1, 1}, That's a special case which must not be included */ |
| 135 | /* {MMAL_ENCODING_YUVUV64_16, 1, 1}, That's a special case which must not be included */ |
| 136 | /* {MMAL_ENCODING_YUVUV64_10, 1, 1}, That's a special case which must not be included */ |
| 137 | /* {MMAL_ENCODING_YUV10_COL, 1, 1}, That's a special case which must not be included */ |
| 138 | {MMAL_ENCODING_UNKNOWN, 0, 0} |
| 139 | }; |
| 140 | |
| 141 | static struct { |
| 142 | uint32_t encoding; |
| 143 | uint32_t sliced_encoding; |
| 144 | } slice_equivalents[] = |
| 145 | { |
| 146 | { MMAL_ENCODING_I420, MMAL_ENCODING_I420_SLICE }, |
| 147 | { MMAL_ENCODING_I422, MMAL_ENCODING_I422_SLICE }, |
| 148 | { MMAL_ENCODING_ARGB, MMAL_ENCODING_ARGB_SLICE }, |
| 149 | { MMAL_ENCODING_RGBA, MMAL_ENCODING_RGBA_SLICE }, |
| 150 | { MMAL_ENCODING_RGB32, MMAL_ENCODING_RGB32_SLICE }, |
| 151 | { MMAL_ENCODING_ABGR, MMAL_ENCODING_ABGR_SLICE }, |
| 152 | { MMAL_ENCODING_BGRA, MMAL_ENCODING_BGRA_SLICE }, |
| 153 | { MMAL_ENCODING_BGR32, MMAL_ENCODING_BGR32_SLICE }, |
| 154 | { MMAL_ENCODING_RGB16, MMAL_ENCODING_RGB16_SLICE }, |
| 155 | { MMAL_ENCODING_RGB24, MMAL_ENCODING_RGB24_SLICE }, |
| 156 | { MMAL_ENCODING_BGR16, MMAL_ENCODING_BGR16_SLICE }, |
| 157 | { MMAL_ENCODING_BGR24, MMAL_ENCODING_BGR24_SLICE }, |
| 158 | { MMAL_ENCODING_UNKNOWN, MMAL_ENCODING_UNKNOWN }, |
| 159 | }; |
| 160 | |
| 161 | |
| 162 | uint32_t mmal_encoding_stride_to_width(uint32_t encoding, uint32_t stride) |
| 163 | { |
| 164 | unsigned int i; |
| 165 | |
| 166 | for(i = 0; pixel_pitch[i].encoding != MMAL_ENCODING_UNKNOWN; i++) |
| 167 | if(pixel_pitch[i].encoding == encoding) break; |
| 168 | |
| 169 | if(pixel_pitch[i].encoding == MMAL_ENCODING_UNKNOWN) |
| 170 | return 0; |
| 171 | |
| 172 | return pixel_pitch[i].pitch_den * stride / pixel_pitch[i].pitch_num; |
| 173 | } |
| 174 | |
| 175 | uint32_t mmal_encoding_width_to_stride(uint32_t encoding, uint32_t width) |
| 176 | { |
| 177 | unsigned int i; |
| 178 | |
| 179 | for(i = 0; pixel_pitch[i].encoding != MMAL_ENCODING_UNKNOWN; i++) |
| 180 | if(pixel_pitch[i].encoding == encoding) break; |
| 181 | |
| 182 | if(pixel_pitch[i].encoding == MMAL_ENCODING_UNKNOWN) |
| 183 | return 0; |
| 184 | |
| 185 | return VCOS_ALIGN_UP(pixel_pitch[i].pitch_num * width / pixel_pitch[i].pitch_den, pixel_pitch[i].alignment); |
| 186 | } |
| 187 | |
| 188 | uint32_t mmal_encoding_get_slice_variant(uint32_t encoding) |
| 189 | { |
| 190 | unsigned int i; |
| 191 | |
| 192 | for(i = 0; slice_equivalents[i].encoding != MMAL_ENCODING_UNKNOWN; i++) |
| 193 | if(slice_equivalents[i].encoding == encoding) break; |
| 194 | |
| 195 | return slice_equivalents[i].sliced_encoding; |
| 196 | } |
| 197 | |
| 198 | const char* mmal_port_type_to_string(MMAL_PORT_TYPE_T type) |
| 199 | { |
| 200 | const char *str; |
| 201 | |
| 202 | switch (type) |
| 203 | { |
| 204 | case MMAL_PORT_TYPE_INPUT: str = "in" ; break; |
| 205 | case MMAL_PORT_TYPE_OUTPUT: str = "out" ; break; |
| 206 | case MMAL_PORT_TYPE_CLOCK: str = "clk" ; break; |
| 207 | case MMAL_PORT_TYPE_CONTROL: str = "ctr" ; break; |
| 208 | default: str = "invalid" ; break; |
| 209 | } |
| 210 | |
| 211 | return str; |
| 212 | } |
| 213 | |
| 214 | MMAL_PARAMETER_HEADER_T *mmal_port_parameter_alloc_get(MMAL_PORT_T *port, |
| 215 | uint32_t id, uint32_t size, MMAL_STATUS_T *p_status) |
| 216 | { |
| 217 | MMAL_PARAMETER_HEADER_T *param = NULL; |
| 218 | MMAL_STATUS_T status = MMAL_ENOSYS; |
| 219 | |
| 220 | if (size < sizeof(MMAL_PARAMETER_HEADER_T)) |
| 221 | size = sizeof(MMAL_PARAMETER_HEADER_T); |
| 222 | |
| 223 | if ((param = vcos_calloc(1, size, "mmal_port_param_get" )) == NULL) |
| 224 | { |
| 225 | status = MMAL_ENOMEM; |
| 226 | goto error; |
| 227 | } |
| 228 | |
| 229 | param->id = id; |
| 230 | param->size = size; |
| 231 | |
| 232 | if ((status = mmal_port_parameter_get(port, param)) == MMAL_ENOSPC) |
| 233 | { |
| 234 | /* We need to reallocate to get enough space for all parameter data */ |
| 235 | size = param->size; |
| 236 | vcos_free(param); |
| 237 | if ((param = vcos_calloc(1, size, "mmal_port_param_get" )) == NULL) |
| 238 | { |
| 239 | status = MMAL_ENOMEM; |
| 240 | goto error; |
| 241 | } |
| 242 | |
| 243 | /* Now retrieve it again */ |
| 244 | param->id = id; |
| 245 | param->size = size; |
| 246 | status = mmal_port_parameter_get(port, param); |
| 247 | } |
| 248 | |
| 249 | if (status != MMAL_SUCCESS) |
| 250 | goto error; |
| 251 | |
| 252 | end: |
| 253 | if (p_status) *p_status = status; |
| 254 | return param; |
| 255 | error: |
| 256 | if (param) vcos_free(param); |
| 257 | param = NULL; |
| 258 | goto end; |
| 259 | } |
| 260 | |
| 261 | void mmal_port_parameter_free(MMAL_PARAMETER_HEADER_T *param) |
| 262 | { |
| 263 | vcos_free(param); |
| 264 | } |
| 265 | |
| 266 | /** Copy buffer header metadata from source to dest |
| 267 | */ |
| 268 | void (MMAL_BUFFER_HEADER_T *dest, const MMAL_BUFFER_HEADER_T *src) |
| 269 | { |
| 270 | dest->cmd = src->cmd; |
| 271 | dest->offset = src->offset; |
| 272 | dest->length = src->length; |
| 273 | dest->flags = src->flags; |
| 274 | dest->pts = src->pts; |
| 275 | dest->dts = src->dts; |
| 276 | *dest->type = *src->type; |
| 277 | } |
| 278 | |
| 279 | /** Create a pool of MMAL_BUFFER_HEADER_T */ |
| 280 | MMAL_POOL_T *mmal_port_pool_create(MMAL_PORT_T *port, unsigned int , uint32_t payload_size) |
| 281 | { |
| 282 | if (!port || !port->priv) |
| 283 | return NULL; |
| 284 | |
| 285 | LOG_TRACE("%s(%i:%i) port %p, headers %u, size %i" , port->component->name, |
| 286 | (int)port->type, (int)port->index, port, headers, (int)payload_size); |
| 287 | |
| 288 | /* Create a pool and ask the port for some memory */ |
| 289 | return mmal_pool_create_with_allocator(headers, payload_size, (void *)port, |
| 290 | (mmal_pool_allocator_alloc_t)mmal_port_payload_alloc, |
| 291 | (mmal_pool_allocator_free_t)mmal_port_payload_free); |
| 292 | } |
| 293 | |
| 294 | /** Destroy a pool of MMAL_BUFFER_HEADER_T */ |
| 295 | void mmal_port_pool_destroy(MMAL_PORT_T *port, MMAL_POOL_T *pool) |
| 296 | { |
| 297 | if (!port || !port->priv || !pool) |
| 298 | return; |
| 299 | |
| 300 | LOG_TRACE("%s(%i:%i) port %p, pool %p" , port->component->name, |
| 301 | (int)port->type, (int)port->index, port, pool); |
| 302 | |
| 303 | if (!vcos_verify(!port->is_enabled)) |
| 304 | { |
| 305 | LOG_ERROR("port %p, pool %p destroyed while port enabled" , port, pool); |
| 306 | mmal_port_disable(port); |
| 307 | } |
| 308 | |
| 309 | mmal_pool_destroy(pool); |
| 310 | } |
| 311 | |
| 312 | /*****************************************************************************/ |
| 313 | void mmal_log_dump_port(MMAL_PORT_T *port) |
| 314 | { |
| 315 | if (!port) |
| 316 | return; |
| 317 | |
| 318 | LOG_DEBUG("%s(%p)" , port->name, port); |
| 319 | |
| 320 | mmal_log_dump_format(port->format); |
| 321 | |
| 322 | LOG_DEBUG(" buffers num: %i(opt %i, min %i), size: %i(opt %i, min: %i), align: %i" , |
| 323 | port->buffer_num, port->buffer_num_recommended, port->buffer_num_min, |
| 324 | port->buffer_size, port->buffer_size_recommended, port->buffer_size_min, |
| 325 | port->buffer_alignment_min); |
| 326 | } |
| 327 | |
| 328 | /*****************************************************************************/ |
| 329 | void mmal_log_dump_format(MMAL_ES_FORMAT_T *format) |
| 330 | { |
| 331 | const char *name_type; |
| 332 | |
| 333 | if (!format) |
| 334 | return; |
| 335 | |
| 336 | switch(format->type) |
| 337 | { |
| 338 | case MMAL_ES_TYPE_AUDIO: name_type = "audio" ; break; |
| 339 | case MMAL_ES_TYPE_VIDEO: name_type = "video" ; break; |
| 340 | case MMAL_ES_TYPE_SUBPICTURE: name_type = "subpicture" ; break; |
| 341 | default: name_type = "unknown" ; break; |
| 342 | } |
| 343 | |
| 344 | LOG_DEBUG("type: %s, fourcc: %4.4s" , name_type, (char *)&format->encoding); |
| 345 | LOG_DEBUG(" bitrate: %i, framed: %i" , format->bitrate, |
| 346 | !!(format->flags & MMAL_ES_FORMAT_FLAG_FRAMED)); |
| 347 | LOG_DEBUG(" extra data: %i, %p" , format->extradata_size, format->extradata); |
| 348 | switch(format->type) |
| 349 | { |
| 350 | case MMAL_ES_TYPE_AUDIO: |
| 351 | LOG_DEBUG(" samplerate: %i, channels: %i, bps: %i, block align: %i" , |
| 352 | format->es->audio.sample_rate, format->es->audio.channels, |
| 353 | format->es->audio.bits_per_sample, format->es->audio.block_align); |
| 354 | break; |
| 355 | |
| 356 | case MMAL_ES_TYPE_VIDEO: |
| 357 | LOG_DEBUG(" width: %i, height: %i, (%i,%i,%i,%i)" , |
| 358 | format->es->video.width, format->es->video.height, |
| 359 | format->es->video.crop.x, format->es->video.crop.y, |
| 360 | format->es->video.crop.width, format->es->video.crop.height); |
| 361 | LOG_DEBUG(" pixel aspect ratio: %i/%i, frame rate: %i/%i" , |
| 362 | format->es->video.par.num, format->es->video.par.den, |
| 363 | format->es->video.frame_rate.num, format->es->video.frame_rate.den); |
| 364 | break; |
| 365 | |
| 366 | case MMAL_ES_TYPE_SUBPICTURE: |
| 367 | break; |
| 368 | |
| 369 | default: break; |
| 370 | } |
| 371 | } |
| 372 | |
| 373 | MMAL_PORT_T *mmal_util_get_port(MMAL_COMPONENT_T *comp, MMAL_PORT_TYPE_T type, unsigned index) |
| 374 | { |
| 375 | unsigned num; |
| 376 | MMAL_PORT_T **list; |
| 377 | |
| 378 | switch (type) |
| 379 | { |
| 380 | case MMAL_PORT_TYPE_INPUT: |
| 381 | num = comp->input_num; |
| 382 | list = comp->input; |
| 383 | break; |
| 384 | |
| 385 | case MMAL_PORT_TYPE_OUTPUT: |
| 386 | num = comp->output_num; |
| 387 | list = comp->output; |
| 388 | break; |
| 389 | |
| 390 | case MMAL_PORT_TYPE_CLOCK: |
| 391 | num = comp->clock_num; |
| 392 | list = comp->clock; |
| 393 | break; |
| 394 | |
| 395 | case MMAL_PORT_TYPE_CONTROL: |
| 396 | num = 1; |
| 397 | list = &comp->control; |
| 398 | break; |
| 399 | |
| 400 | default: |
| 401 | vcos_assert(0); |
| 402 | return NULL; |
| 403 | } |
| 404 | if (index < num) |
| 405 | /* coverity[ptr_arith] num is 1 here */ |
| 406 | return list[index]; |
| 407 | else |
| 408 | return NULL; |
| 409 | } |
| 410 | |
| 411 | char *mmal_4cc_to_string(char *buf, size_t len, uint32_t fourcc) |
| 412 | { |
| 413 | char *src = (char*)&fourcc; |
| 414 | vcos_assert(len >= 5); |
| 415 | if (len < 5) |
| 416 | { |
| 417 | buf[0] = '\0'; |
| 418 | } |
| 419 | else if (fourcc) |
| 420 | { |
| 421 | memcpy(buf, src, 4); |
| 422 | buf[4] = '\0'; |
| 423 | } |
| 424 | else |
| 425 | { |
| 426 | snprintf(buf, len, "<0>" ); |
| 427 | } |
| 428 | return buf; |
| 429 | } |
| 430 | |
| 431 | #define MAX_ENCODINGS_NUM 25 |
| 432 | typedef struct { |
| 433 | MMAL_PARAMETER_HEADER_T ; |
| 434 | MMAL_FOURCC_T encodings[MAX_ENCODINGS_NUM]; |
| 435 | } MMAL_SUPPORTED_ENCODINGS_T; |
| 436 | |
| 437 | |
| 438 | int mmal_util_rgb_order_fixed(MMAL_PORT_T *port) |
| 439 | { |
| 440 | int new_fw = 0; |
| 441 | MMAL_STATUS_T ret; |
| 442 | //Firmware support of RGB24 vs BGR24 colour ordering from camera |
| 443 | //and video splitter components has been corrected as of June 2016. |
| 444 | //New firmwares always report MMAL_ENCODING_RGB24 before BGR24, and |
| 445 | //that is the format we want. |
| 446 | //Old firmware reported BGR24 first, and also returned an error on |
| 447 | //the still port on querying MMAL_PARAMETER_SUPPORTED_ENCODINGS. |
| 448 | |
| 449 | MMAL_SUPPORTED_ENCODINGS_T sup_encodings = {{MMAL_PARAMETER_SUPPORTED_ENCODINGS, sizeof(sup_encodings)}, {0}}; |
| 450 | ret = mmal_port_parameter_get(port, &sup_encodings.header); |
| 451 | if (ret == MMAL_SUCCESS || ret == MMAL_ENOSPC) |
| 452 | { |
| 453 | //Allow ENOSPC error and hope that the desired formats are in the first |
| 454 | //MAX_ENCODINGS_NUM entries. |
| 455 | int i; |
| 456 | int num_encodings = (sup_encodings.header.size - sizeof(sup_encodings.header)) / |
| 457 | sizeof(sup_encodings.encodings[0]); |
| 458 | if(num_encodings > MAX_ENCODINGS_NUM) |
| 459 | num_encodings = MAX_ENCODINGS_NUM; |
| 460 | for (i=0; i<num_encodings; i++) |
| 461 | { |
| 462 | if (sup_encodings.encodings[i] == MMAL_ENCODING_BGR24) |
| 463 | { |
| 464 | //Found BGR24 first - old firmware. |
| 465 | break; |
| 466 | } |
| 467 | if (sup_encodings.encodings[i] == MMAL_ENCODING_RGB24) |
| 468 | { |
| 469 | //Found RGB24 first - new firmware, so use RGB24. |
| 470 | new_fw = 1; |
| 471 | } |
| 472 | } |
| 473 | } |
| 474 | return new_fw; |
| 475 | } |
| 476 | |