Hamsalekha S | 8d3d303 | 2015-03-13 21:24:58 +0530 | [diff] [blame] | 1 | /****************************************************************************** |
| 2 | * |
| 3 | * Copyright (C) 2015 The Android Open Source Project |
| 4 | * |
| 5 | * Licensed under the Apache License, Version 2.0 (the "License"); |
| 6 | * you may not use this file except in compliance with the License. |
| 7 | * You may obtain a copy of the License at: |
| 8 | * |
| 9 | * http://www.apache.org/licenses/LICENSE-2.0 |
| 10 | * |
| 11 | * Unless required by applicable law or agreed to in writing, software |
| 12 | * distributed under the License is distributed on an "AS IS" BASIS, |
| 13 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| 14 | * See the License for the specific language governing permissions and |
| 15 | * limitations under the License. |
| 16 | * |
| 17 | ***************************************************************************** |
| 18 | * Originally developed and contributed by Ittiam Systems Pvt. Ltd, Bangalore |
| 19 | */ |
| 20 | |
| 21 | /** |
| 22 | ******************************************************************************* |
| 23 | * @file |
| 24 | * ih264e_time_stamp.c |
| 25 | * |
| 26 | * @brief |
| 27 | * This file contains functions used for source and target time stamp management |
| 28 | * |
| 29 | * @author |
| 30 | * ittiam |
| 31 | * |
| 32 | * @par List of Functions: |
| 33 | * - gcd() |
| 34 | * - ih264e_get_range() |
| 35 | * - ih264e_frame_time_get_init_free_memtab() |
| 36 | * - ih264e_init_frame_time() |
| 37 | * - ih264e_should_src_be_skipped() |
| 38 | * - ih264e_time_stamp_get_init_free_memtab() |
| 39 | * - ih264e_init_time_stamp() |
| 40 | * - ih264e_update_time_stamp() |
| 41 | * - ih264e_frame_time_get_src_frame_rate() |
| 42 | * - ih264e_frame_time_get_tgt_frame_rate() |
| 43 | * - ih264e_frame_time_get_src_ticks() |
| 44 | * - ih264e_frame_time_get_tgt_ticks() |
| 45 | * - ih264e_frame_time_get_src_time() |
| 46 | * - ih264e_frame_time_get_tgt_time() |
| 47 | * - ih264e_frame_time_update_src_frame_rate() |
| 48 | * - ih264e_frame_time_update_tgt_frame_rate() |
| 49 | * - ih264_time_stamp_update_frame_rate() |
| 50 | * |
| 51 | * @remarks |
| 52 | * None |
| 53 | * |
| 54 | ******************************************************************************* |
| 55 | */ |
| 56 | |
| 57 | /*****************************************************************************/ |
| 58 | /* File Includes */ |
| 59 | /*****************************************************************************/ |
| 60 | |
| 61 | /* user include files */ |
| 62 | #include "irc_datatypes.h" |
| 63 | #include "iv2.h" |
| 64 | #include "ive2.h" |
| 65 | #include "ih264e_error.h" |
| 66 | #include "ih264e_bitstream.h" |
| 67 | #include "ih264_defs.h" |
| 68 | #include "ih264e_defs.h" |
| 69 | #include "ime_distortion_metrics.h" |
Harinarayanan K K | 3749f6f | 2015-06-18 16:03:38 +0530 | [diff] [blame] | 70 | #include "ime_defs.h" |
Hamsalekha S | 8d3d303 | 2015-03-13 21:24:58 +0530 | [diff] [blame] | 71 | #include "ime_structs.h" |
| 72 | #include "irc_cntrl_param.h" |
| 73 | #include "irc_frame_info_collector.h" |
| 74 | #include "ih264e_rate_control.h" |
| 75 | #include "ih264_structs.h" |
| 76 | #include "ih264_trans_quant_itrans_iquant.h" |
| 77 | #include "ih264_inter_pred_filters.h" |
| 78 | #include "ih264_mem_fns.h" |
| 79 | #include "ih264_padding.h" |
| 80 | #include "ih264_intra_pred_filters.h" |
| 81 | #include "ih264_deblk_edge_filters.h" |
Harinarayanan K K | 3749f6f | 2015-06-18 16:03:38 +0530 | [diff] [blame] | 82 | #include "ih264_cabac_tables.h" |
| 83 | #include "ih264e_cabac_structs.h" |
Hamsalekha S | 8d3d303 | 2015-03-13 21:24:58 +0530 | [diff] [blame] | 84 | #include "ih264e_structs.h" |
| 85 | #include "ih264e_rc_mem_interface.h" |
| 86 | #include "ih264e_time_stamp.h" |
Harish Mahendrakar | bb1543b | 2015-08-03 12:13:51 +0530 | [diff] [blame] | 87 | #include "irc_common.h" |
Hamsalekha S | 8d3d303 | 2015-03-13 21:24:58 +0530 | [diff] [blame] | 88 | #include "irc_rate_control_api.h" |
| 89 | |
| 90 | |
| 91 | /*****************************************************************************/ |
| 92 | /* Function Definitions */ |
| 93 | /*****************************************************************************/ |
| 94 | |
| 95 | /** |
| 96 | ******************************************************************************* |
| 97 | * |
| 98 | * @brief Function to compute gcd of two numbers |
| 99 | * |
| 100 | * @par Description |
| 101 | * Function to compute gcd of two numbers |
| 102 | * |
| 103 | * @param[in] i4_x |
| 104 | * value 1 |
| 105 | * |
| 106 | * @param[in] i4_y |
| 107 | * value 2 |
| 108 | * |
| 109 | * @returns |
| 110 | * GCD(value 1, value 2) |
| 111 | * |
| 112 | * @remarks none |
| 113 | * |
| 114 | ******************************************************************************* |
| 115 | */ |
| 116 | static WORD32 gcd(WORD32 i4_x, WORD32 i4_y) |
| 117 | { |
| 118 | if (i4_x > i4_y) |
| 119 | { |
| 120 | i4_x = i4_y + i4_x; |
| 121 | i4_y = i4_x - i4_y; |
| 122 | i4_x = i4_x - i4_y; |
| 123 | } |
| 124 | while (i4_y != 0) |
| 125 | { |
| 126 | WORD32 temp; |
| 127 | i4_x = i4_x % i4_y; |
| 128 | temp = i4_x; |
| 129 | i4_x = i4_y; |
| 130 | i4_y = temp; |
| 131 | } |
| 132 | return (i4_x); |
| 133 | } |
| 134 | |
| 135 | /** |
| 136 | ******************************************************************************* |
| 137 | * |
| 138 | * @brief Function to determine number of bits required to represent a given |
| 139 | * value |
| 140 | * |
| 141 | * @par Description |
| 142 | * This function determines the number of bits required to represent the given |
| 143 | * value. It is used to find out number of bits to read when the data size is |
| 144 | * not fixed (e.g. vop_time_increment_resolution). |
| 145 | * |
| 146 | * @param[in] u4_value |
| 147 | * Value for which the number of bits required to represent is to be determined |
| 148 | * |
| 149 | * @param[in] u1_no_of_bits |
| 150 | * Represents the value's word type = 8/16/32 |
| 151 | * |
| 152 | * @returns |
| 153 | * The number of bits required to represent the given number |
| 154 | * |
| 155 | * @remarks none |
| 156 | * |
| 157 | ******************************************************************************* |
| 158 | */ |
| 159 | static UWORD8 ih264e_get_range(UWORD32 u4_value, UWORD8 u1_no_of_bits) |
| 160 | { |
| 161 | UWORD8 count; |
| 162 | UWORD32 temp; |
| 163 | |
| 164 | if (u4_value > (UWORD32) ((1 << (u1_no_of_bits >> 1)) - 1)) |
| 165 | { |
| 166 | temp = (1 << (u1_no_of_bits - 1)); |
| 167 | for (count = 0; count < (u1_no_of_bits >> 1); count++) |
| 168 | { |
| 169 | if ((temp & u4_value) != 0) |
| 170 | { |
| 171 | return (UWORD8) (u1_no_of_bits - count); |
| 172 | } |
| 173 | else |
| 174 | { |
| 175 | temp >>= 1; |
| 176 | } |
| 177 | } |
| 178 | return 0; |
| 179 | } |
| 180 | else |
| 181 | { |
| 182 | temp = (1 << ((u1_no_of_bits >> 1) - 1)); |
| 183 | for (count = 0; count < ((u1_no_of_bits >> 1) - 1); count++) |
| 184 | { |
| 185 | if ((temp & u4_value) != 0) |
| 186 | { |
| 187 | return (UWORD8) ((u1_no_of_bits >> 1) - count); |
| 188 | } |
| 189 | else |
| 190 | { |
| 191 | temp >>= 1; |
| 192 | } |
| 193 | } |
| 194 | return 1; |
| 195 | } |
| 196 | } |
| 197 | |
| 198 | /** |
| 199 | ******************************************************************************* |
| 200 | * |
| 201 | * @brief |
| 202 | * Function to init frame time memtabs |
| 203 | * |
| 204 | * @par Description |
| 205 | * Function to init frame time memtabs |
| 206 | * |
| 207 | * @param[in] pps_frame_time |
| 208 | * Pointer to frame time contexts |
| 209 | * |
| 210 | * @param[in] ps_memtab |
| 211 | * Pointer to memtab |
| 212 | * |
| 213 | * @param[in] e_func_type |
| 214 | * Function type (get memtabs/init memtabs) |
| 215 | * |
| 216 | * @returns |
| 217 | * none |
| 218 | * |
| 219 | * @remarks |
| 220 | * |
| 221 | ******************************************************************************* |
| 222 | */ |
| 223 | WORD32 ih264e_frame_time_get_init_free_memtab(frame_time_handle *pps_frame_time, |
| 224 | itt_memtab_t *ps_memtab, |
| 225 | ITT_FUNC_TYPE_E e_func_type) |
| 226 | { |
| 227 | WORD32 i4_mem_tab_idx = 0; |
Martin Storsjo | c22addc | 2015-06-23 14:51:06 +0300 | [diff] [blame] | 228 | frame_time_t s_temp_frame_time_t; |
Hamsalekha S | 8d3d303 | 2015-03-13 21:24:58 +0530 | [diff] [blame] | 229 | |
| 230 | /* Hack for al alloc, during which we dont have any state memory. |
| 231 | Dereferencing can cause issues */ |
| 232 | if (e_func_type == GET_NUM_MEMTAB || e_func_type == FILL_MEMTAB) |
| 233 | (*pps_frame_time) = &s_temp_frame_time_t; |
| 234 | |
| 235 | /* for src rate control state structure */ |
| 236 | if (e_func_type != GET_NUM_MEMTAB) |
| 237 | { |
| 238 | fill_memtab(&ps_memtab[i4_mem_tab_idx], sizeof(frame_time_t), |
| 239 | ALIGN_128_BYTE, PERSISTENT, DDR); |
| 240 | use_or_fill_base(&ps_memtab[0], (void**) pps_frame_time, e_func_type); |
| 241 | } |
| 242 | i4_mem_tab_idx++; |
| 243 | |
| 244 | return (i4_mem_tab_idx); |
| 245 | } |
| 246 | |
| 247 | /** |
| 248 | ******************************************************************************* |
| 249 | * |
| 250 | * @brief |
| 251 | * Function to init frame time context |
| 252 | * |
| 253 | * @par Description |
| 254 | * Frame time structure stores the time of the source and the target frames to |
| 255 | * be encoded. Based on the time we decide whether or not to encode the source |
| 256 | * frame |
| 257 | * |
| 258 | * @param[in] ps_frame_time |
| 259 | * Pointer Frame time context |
| 260 | * |
| 261 | * @param[in] u4_src_frm_rate |
| 262 | * Source frame rate |
| 263 | * |
| 264 | * @param[in] u4_tgt_frm_rate |
| 265 | * Target frame rate |
| 266 | * |
| 267 | * @returns |
| 268 | * none |
| 269 | * |
| 270 | * @remarks |
| 271 | * |
| 272 | ******************************************************************************* |
| 273 | */ |
| 274 | void ih264e_init_frame_time(frame_time_t *ps_frame_time, |
| 275 | UWORD32 u4_src_frm_rate, |
| 276 | UWORD32 u4_tgt_frm_rate) |
| 277 | { |
| 278 | /* Initialise the common time base based on which the source and target |
| 279 | * frame times increase */ |
| 280 | WORD32 i4_gcd = gcd(u4_src_frm_rate, u4_tgt_frm_rate); |
| 281 | |
Harish Mahendrakar | bb1543b | 2015-08-03 12:13:51 +0530 | [diff] [blame] | 282 | /* Avoiding overflow by doing calculations in float */ |
| 283 | number_t s_src_frm_rate, s_tgt_frm_rate, s_gcd, s_common_time_base, s_numerator; |
| 284 | |
| 285 | SET_VAR_Q(s_src_frm_rate, u4_src_frm_rate, 0); |
| 286 | SET_VAR_Q(s_tgt_frm_rate, u4_tgt_frm_rate, 0); |
| 287 | SET_VAR_Q(s_gcd, i4_gcd, 0); |
| 288 | mult32_var_q(s_src_frm_rate, s_tgt_frm_rate, &s_numerator); |
| 289 | div32_var_q(s_numerator, s_gcd, &s_common_time_base); |
| 290 | number_t_to_word32(s_common_time_base, &(ps_frame_time->common_time_base)); |
Hamsalekha S | 8d3d303 | 2015-03-13 21:24:58 +0530 | [diff] [blame] | 291 | |
| 292 | /* The source and target increment per vop is initialized */ |
| 293 | ps_frame_time->u4_src_frm_time_incr = ps_frame_time->common_time_base |
| 294 | / u4_src_frm_rate; |
| 295 | ps_frame_time->u4_tgt_frm_time_incr = ps_frame_time->common_time_base |
| 296 | / u4_tgt_frm_rate; |
| 297 | |
| 298 | /* Initialise the source and target times to 0 (RESET) */ |
| 299 | ps_frame_time->u4_src_frm_time = 0; |
| 300 | ps_frame_time->u4_tgt_frm_time = 0; |
| 301 | |
| 302 | /* Initialize the number of frms not to be skipped to 0 */ |
| 303 | ps_frame_time->u4_num_frms_dont_skip = 0; |
| 304 | } |
| 305 | |
| 306 | /** |
| 307 | ******************************************************************************* |
| 308 | * |
| 309 | * @brief |
| 310 | * Function to check if frame can be skipped |
| 311 | * |
| 312 | * @par Description |
| 313 | * Based on the source and target frame time and the delta time stamp |
| 314 | * we decide whether to code the source or not. |
| 315 | * This is based on the assumption |
| 316 | * that the source frame rate is greater that target frame rate. |
| 317 | * Updates the time_stamp structure |
| 318 | * |
| 319 | * @param[in] ps_frame_time |
| 320 | * Handle to frame time context |
| 321 | * |
| 322 | * @param[in] u4_delta_time_stamp |
| 323 | * Time stamp difference between frames |
| 324 | * |
| 325 | * @param[out] pu4_frm_not_skipped_for_dts |
| 326 | * Flag to indicate if frame is already skipped by application |
| 327 | * |
| 328 | * @returns |
| 329 | * Flag to skip frame |
| 330 | * |
| 331 | * @remarks |
| 332 | * |
| 333 | ******************************************************************************* |
| 334 | */ |
| 335 | UWORD8 ih264e_should_src_be_skipped(frame_time_t *ps_frame_time, |
| 336 | UWORD32 u4_delta_time_stamp, |
| 337 | UWORD32 *pu4_frm_not_skipped_for_dts) |
| 338 | { |
| 339 | UWORD8 skip_src = 0; |
| 340 | |
| 341 | if (ps_frame_time->u4_tgt_frm_time > ps_frame_time->u4_src_frm_time && |
| 342 | ps_frame_time->u4_tgt_frm_time >= (ps_frame_time->u4_src_frm_time + |
| 343 | ps_frame_time->u4_src_frm_time_incr)) |
| 344 | { |
| 345 | skip_src = 1; |
| 346 | } |
| 347 | |
| 348 | /* source time gets updated every frame */ |
| 349 | ps_frame_time->u4_src_frm_time += ps_frame_time->u4_src_frm_time_incr; |
| 350 | |
| 351 | /* target time gets updated only when the source is coded */ |
| 352 | if (!skip_src) |
| 353 | { |
| 354 | ps_frame_time->u4_tgt_frm_time += ps_frame_time->u4_tgt_frm_time_incr; |
| 355 | } |
| 356 | |
| 357 | /* If the source and target frame times get incremented properly |
| 358 | both should be equal to the common time base at the same time. If |
| 359 | that happens we reset the time to zero*/ |
| 360 | if (( ps_frame_time->common_time_base ==(WORD32)ps_frame_time->u4_src_frm_time) |
| 361 | && (ps_frame_time->common_time_base ==(WORD32) ps_frame_time->u4_tgt_frm_time )) |
| 362 | { |
| 363 | ps_frame_time->u4_src_frm_time = 0; |
| 364 | ps_frame_time->u4_tgt_frm_time = 0; |
| 365 | } |
| 366 | |
| 367 | /* This keeps a count of how many frames need not be skipped in order |
| 368 | to take care of the delta time stamp */ |
| 369 | ps_frame_time->u4_num_frms_dont_skip += (u4_delta_time_stamp - 1); |
| 370 | |
| 371 | /** If this frame is to be skipped in order to maintain the tgt_frm_rate |
| 372 | check if already a frame has been skipped by the application. |
| 373 | In that case, do not skip this frame **/ |
| 374 | if (ps_frame_time->u4_num_frms_dont_skip && skip_src) |
| 375 | { |
| 376 | skip_src = 0; |
| 377 | *pu4_frm_not_skipped_for_dts = 1; |
| 378 | ps_frame_time->u4_num_frms_dont_skip -= 1; |
| 379 | } |
| 380 | else |
| 381 | { |
| 382 | pu4_frm_not_skipped_for_dts[0] = 0; |
| 383 | } |
| 384 | |
| 385 | return (skip_src); |
| 386 | } |
| 387 | |
| 388 | /** |
| 389 | ******************************************************************************* |
| 390 | * |
| 391 | * @brief |
| 392 | * Function to inititialize time stamp memtabs |
| 393 | * |
| 394 | * @par Description |
| 395 | * Function to initialize time stamp memtabs |
| 396 | * |
| 397 | * @param[in] pps_time_stamp |
| 398 | * Pointer to time stamp context |
| 399 | * |
| 400 | * @param[in] ps_memtab |
| 401 | * Pointer to memtab |
| 402 | * |
| 403 | * @param[in] e_func_type |
| 404 | * Funcion type (Get memtab/ init memtab) |
| 405 | * |
| 406 | * @returns |
| 407 | * number of memtabs used |
| 408 | * |
| 409 | * @remarks |
| 410 | * |
| 411 | ******************************************************************************* |
| 412 | */ |
| 413 | WORD32 ih264e_time_stamp_get_init_free_memtab(time_stamp_handle *pps_time_stamp, |
| 414 | itt_memtab_t *ps_memtab, |
| 415 | ITT_FUNC_TYPE_E e_func_type) |
| 416 | { |
| 417 | WORD32 i4_mem_tab_idx = 0; |
Martin Storsjo | c22addc | 2015-06-23 14:51:06 +0300 | [diff] [blame] | 418 | time_stamp_t s_temp_time_stamp_t; |
Hamsalekha S | 8d3d303 | 2015-03-13 21:24:58 +0530 | [diff] [blame] | 419 | |
| 420 | /* Hack for al alloc, during which we dont have any state memory. |
| 421 | Dereferencing can cause issues */ |
| 422 | if (e_func_type == GET_NUM_MEMTAB || e_func_type == FILL_MEMTAB) |
| 423 | (*pps_time_stamp) = &s_temp_time_stamp_t; |
| 424 | |
| 425 | /* for src rate control state structure */ |
| 426 | if (e_func_type != GET_NUM_MEMTAB) |
| 427 | { |
| 428 | fill_memtab(&ps_memtab[i4_mem_tab_idx], sizeof(time_stamp_t), |
| 429 | ALIGN_128_BYTE, PERSISTENT, DDR); |
| 430 | use_or_fill_base(&ps_memtab[0], (void**) pps_time_stamp, e_func_type); |
| 431 | } |
| 432 | i4_mem_tab_idx++; |
| 433 | |
| 434 | return (i4_mem_tab_idx); |
| 435 | } |
| 436 | |
| 437 | /** |
| 438 | ******************************************************************************* |
| 439 | * |
| 440 | * @brief |
| 441 | * Function to initialize time stamp context |
| 442 | * |
| 443 | * @par Description |
| 444 | * Time stamp structure stores the time stamp data that |
| 445 | * needs to be sent in to the header of MPEG4. Based on the |
| 446 | * max target frame rate the vop_time increment resolution is set |
| 447 | * so as to support all the frame rates below max frame rate. |
| 448 | * A support till the third decimal point is assumed. |
| 449 | * |
| 450 | * @param[in] ps_time_stamp |
| 451 | * Pointer to time stamp structure |
| 452 | * |
| 453 | * @param[in] u4_max_frm_rate |
| 454 | * Maximum frame rate |
| 455 | * |
| 456 | * @param[in] u4_src_frm_rate |
| 457 | * Source frame rate |
| 458 | * |
| 459 | * @returns |
| 460 | * none |
| 461 | * |
| 462 | * @remarks |
| 463 | * |
| 464 | ******************************************************************************* |
| 465 | */ |
| 466 | void ih264e_init_time_stamp(time_stamp_t *ps_time_stamp, |
| 467 | UWORD32 u4_max_frm_rate, |
| 468 | UWORD32 u4_src_frm_rate) |
| 469 | { |
| 470 | /* We expect the max frame rate to be less than 60000, |
| 471 | * if not we divide it by zero and work with it */ |
| 472 | if (u4_max_frm_rate > 60000) |
| 473 | { |
| 474 | u4_max_frm_rate >>= 1; |
| 475 | ps_time_stamp->is_max_frame_rate_scaled = 1; |
| 476 | } |
| 477 | else |
| 478 | { |
| 479 | ps_time_stamp->is_max_frame_rate_scaled = 0; |
| 480 | } |
| 481 | |
| 482 | ps_time_stamp->u4_vop_time_incr_res = u4_max_frm_rate; |
| 483 | ps_time_stamp->u4_vop_time_incr_range = ih264e_get_range(u4_max_frm_rate, 32); |
| 484 | ps_time_stamp->u4_vop_time_incr = (ps_time_stamp->u4_vop_time_incr_res * 1000) / u4_src_frm_rate;/* Since frm rate is in millisec */ |
| 485 | ps_time_stamp->u4_vop_time = 0; |
| 486 | ps_time_stamp->u4_cur_tgt_vop_time = 0; |
| 487 | ps_time_stamp->u4_prev_tgt_vop_time = 0; |
| 488 | } |
| 489 | |
| 490 | /** |
| 491 | ******************************************************************************* |
| 492 | * |
| 493 | * @brief Function to update time stamp context |
| 494 | * |
| 495 | * @par Description |
| 496 | * Vop time is incremented by increment value. When vop time goes |
| 497 | * more than the vop time resolution set the modulo time base to |
| 498 | * 1 and reduce the vop time by vop time resolution so that the |
| 499 | * excess value is present in vop time and get accumulated over time |
| 500 | * so that the corresponding frame rate is achieved at a average of |
| 501 | * 1000 seconds |
| 502 | * |
| 503 | * @param[in] ps_time_stamp |
| 504 | * Pointer to time stamp structure |
| 505 | * |
| 506 | * @returns |
| 507 | * none |
| 508 | * |
| 509 | * @remarks |
| 510 | * |
| 511 | ******************************************************************************* |
| 512 | */ |
| 513 | void ih264e_update_time_stamp(time_stamp_t *ps_time_stamp) |
| 514 | { |
| 515 | /* Since get time stamp is called after the update |
| 516 | A copy of the vop time and the modulo time is stored */ |
| 517 | ps_time_stamp->u4_cur_tgt_vop_time = ps_time_stamp->u4_vop_time; |
| 518 | |
| 519 | ps_time_stamp->u4_vop_time += ps_time_stamp->u4_vop_time_incr; |
| 520 | if (ps_time_stamp->u4_vop_time >= ps_time_stamp->u4_vop_time_incr_res) |
| 521 | { |
| 522 | ps_time_stamp->u4_vop_time -= ps_time_stamp->u4_vop_time_incr_res; |
| 523 | } |
| 524 | } |
| 525 | |
| 526 | /**************************************************************************** |
| 527 | Run-Time Modifying functions |
| 528 | ****************************************************************************/ |
| 529 | |
| 530 | /** |
| 531 | ******************************************************************************* |
| 532 | * |
| 533 | * @brief Function to get source frame rate |
| 534 | * |
| 535 | * @par Description |
| 536 | * Function to get source frame rate |
| 537 | * |
| 538 | * @param[in] ps_frame_time |
| 539 | * Pointer to frame time context |
| 540 | * |
| 541 | * @returns |
| 542 | * source frame rate |
| 543 | * |
| 544 | * @remarks |
| 545 | * |
| 546 | ******************************************************************************* |
| 547 | */ |
| 548 | WORD32 ih264e_frame_time_get_src_frame_rate(frame_time_t *ps_frame_time) |
| 549 | { |
| 550 | return (ps_frame_time->common_time_base / ps_frame_time->u4_src_frm_time_incr); |
| 551 | } |
| 552 | |
| 553 | /** |
| 554 | ******************************************************************************* |
| 555 | * |
| 556 | * @brief Function to get target frame rate |
| 557 | * |
| 558 | * @par Description |
| 559 | * Function to get target frame rate |
| 560 | * |
| 561 | * @param[in] ps_frame_time |
| 562 | * Pointer to frame time context |
| 563 | * |
| 564 | * @returns |
| 565 | * target frame rate |
| 566 | * |
| 567 | * @remarks |
| 568 | * |
| 569 | ******************************************************************************* |
| 570 | */ |
| 571 | WORD32 ih264e_frame_time_get_tgt_frame_rate(frame_time_t *ps_frame_time) |
| 572 | { |
| 573 | return (ps_frame_time->common_time_base / ps_frame_time->u4_tgt_frm_time_incr); |
| 574 | } |
| 575 | |
| 576 | /** |
| 577 | ******************************************************************************* |
| 578 | * |
| 579 | * @brief Function to get source time increment |
| 580 | * |
| 581 | * @par Description |
| 582 | * Function to get source time increment |
| 583 | * |
| 584 | * @param[in] ps_frame_time |
| 585 | * Pointer to frame time context |
| 586 | * |
| 587 | * @returns |
| 588 | * source time increment |
| 589 | * |
| 590 | * @remarks |
| 591 | * |
| 592 | ******************************************************************************* |
| 593 | */ |
| 594 | WORD32 ih264e_frame_time_get_src_ticks(frame_time_t *ps_frame_time) |
| 595 | { |
| 596 | return (ps_frame_time->u4_src_frm_time_incr); |
| 597 | } |
| 598 | |
| 599 | /** |
| 600 | ******************************************************************************* |
| 601 | * |
| 602 | * @brief Function to get target time increment |
| 603 | * |
| 604 | * @par Description |
| 605 | * Function to get target time increment |
| 606 | * |
| 607 | * @param[in] ps_frame_time |
| 608 | * Pointer to frame time context |
| 609 | * |
| 610 | * @returns |
| 611 | * target time increment |
| 612 | * |
| 613 | * @remarks |
| 614 | * |
| 615 | ******************************************************************************* |
| 616 | */ |
| 617 | WORD32 ih264e_frame_time_get_tgt_ticks(frame_time_t *ps_frame_time) |
| 618 | { |
| 619 | return (ps_frame_time->u4_tgt_frm_time_incr); |
| 620 | } |
| 621 | |
| 622 | /** |
| 623 | ******************************************************************************* |
| 624 | * |
| 625 | * @brief Function to get src frame time |
| 626 | * |
| 627 | * @par Description |
| 628 | * Function to get src frame time |
| 629 | * |
| 630 | * @param[in] ps_frame_time |
| 631 | * Pointer to frame time context |
| 632 | * |
| 633 | * @returns |
| 634 | * src frame time |
| 635 | * |
| 636 | * @remarks |
| 637 | * |
| 638 | ******************************************************************************* |
| 639 | */ |
| 640 | WORD32 ih264e_frame_time_get_src_time(frame_time_t *frame_time) |
| 641 | { |
| 642 | return (frame_time->u4_src_frm_time); |
| 643 | } |
| 644 | |
| 645 | /** |
| 646 | ******************************************************************************* |
| 647 | * |
| 648 | * @brief Function to get tgt frame time |
| 649 | * |
| 650 | * @par Description |
| 651 | * Function to get tgt frame time |
| 652 | * |
| 653 | * @param[in] ps_frame_time |
| 654 | * Pointer to frame time context |
| 655 | * |
| 656 | * @returns |
| 657 | * tgt frame time |
| 658 | * |
| 659 | * @remarks |
| 660 | * |
| 661 | ******************************************************************************* |
| 662 | */ |
| 663 | WORD32 ih264e_frame_time_get_tgt_time(frame_time_t *frame_time) |
| 664 | { |
| 665 | return (frame_time->u4_tgt_frm_time); |
| 666 | } |
| 667 | |
| 668 | /** |
| 669 | ******************************************************************************* |
| 670 | * |
| 671 | * @brief Function to update source frame time with a new source frame rate |
| 672 | * |
| 673 | * @par Description |
| 674 | * Function to update source frame time with a new source frame rate |
| 675 | * |
| 676 | * @param[in] ps_frame_time |
| 677 | * Pointer to frame time context |
| 678 | * |
| 679 | * @param[in] src_frm_rate |
| 680 | * source frame rate |
| 681 | * |
| 682 | * @returns |
| 683 | * None |
| 684 | * |
| 685 | * @remarks |
| 686 | * |
| 687 | ******************************************************************************* |
| 688 | */ |
| 689 | void ih264e_frame_time_update_src_frame_rate(frame_time_t *ps_frame_time, |
| 690 | WORD32 src_frm_rate) |
| 691 | { |
| 692 | /* Since tgt frame rate does not change deriving the tgt_frm rate from |
| 693 | * common_time_base */ |
| 694 | WORD32 tgt_frm_rate = ps_frame_time->common_time_base / ps_frame_time->u4_tgt_frm_time_incr; |
| 695 | |
| 696 | /* Re-initialise frame_time based on the new src_frame_rate and |
| 697 | * old tgt_frame_rate */ |
| 698 | ih264e_init_frame_time(ps_frame_time, src_frm_rate, tgt_frm_rate); |
| 699 | } |
| 700 | |
| 701 | /** |
| 702 | ******************************************************************************* |
| 703 | * |
| 704 | * @brief Function to update target frame time with a new source frame rate |
| 705 | * |
| 706 | * @par Description |
| 707 | * Function to update target frame time with a new source frame rate |
| 708 | * |
| 709 | * @param[in] ps_frame_time |
| 710 | * Pointer to frame time context |
| 711 | * |
| 712 | * @param[in] tgt_frm_rate |
| 713 | * target frame rate |
| 714 | * |
| 715 | * @returns |
| 716 | * None |
| 717 | * |
| 718 | * @remarks |
| 719 | * |
| 720 | ******************************************************************************* |
| 721 | */ |
| 722 | void ih264e_frame_time_update_tgt_frame_rate(frame_time_t *ps_frame_time, |
| 723 | WORD32 tgt_frm_rate) |
| 724 | { |
| 725 | /* Since src frame rate does not change deriving the src_frm rate from |
| 726 | * common_time_base */ |
| 727 | WORD32 src_frm_rate = ps_frame_time->common_time_base / ps_frame_time->u4_src_frm_time_incr; |
| 728 | |
| 729 | /* Re-initialise frame_time based on the new tgt_frame_rate and |
| 730 | * old src_frame_rate */ |
| 731 | ih264e_init_frame_time(ps_frame_time, src_frm_rate, tgt_frm_rate); |
| 732 | } |
| 733 | |
| 734 | /** |
| 735 | ******************************************************************************* |
| 736 | * |
| 737 | * @brief Function to update target frame time with a new source frame rate |
| 738 | * |
| 739 | * @par Description |
| 740 | * When the frame rate changes the time increment is modified by appropriate ticks |
| 741 | * |
| 742 | * @param[in] ps_time_stamp |
| 743 | * Pointer to time stamp structure |
| 744 | * |
| 745 | * @param[in] src_frm_rate |
| 746 | * source frame rate |
| 747 | * |
| 748 | * @returns |
| 749 | * None |
| 750 | * |
| 751 | * @remarks |
| 752 | * |
| 753 | ******************************************************************************* |
| 754 | */ |
| 755 | void ih264_time_stamp_update_frame_rate(time_stamp_t *ps_time_stamp, |
| 756 | UWORD32 src_frm_rate) |
| 757 | { |
| 758 | ps_time_stamp->u4_vop_time_incr = (ps_time_stamp->u4_vop_time_incr_res * 1000) / src_frm_rate;/* Since frm rate is in millisec */ |
| 759 | } |