diff options
Diffstat (limited to 'tinyDAV/include/tinydav/codecs/h264/tdav_codec_h264_common.h')
| -rw-r--r-- | tinyDAV/include/tinydav/codecs/h264/tdav_codec_h264_common.h | 433 |
1 files changed, 433 insertions, 0 deletions
diff --git a/tinyDAV/include/tinydav/codecs/h264/tdav_codec_h264_common.h b/tinyDAV/include/tinydav/codecs/h264/tdav_codec_h264_common.h new file mode 100644 index 0000000..1cf2e97 --- /dev/null +++ b/tinyDAV/include/tinydav/codecs/h264/tdav_codec_h264_common.h @@ -0,0 +1,433 @@ +/* +* Copyright (C) 2011 Doubango Telecom <http://www.doubango.org>. +* +* Contact: Mamadou Diop <diopmamadou(at)doubango(DOT)org> +* +* This file is part of Open Source Doubango Framework. +* +* DOUBANGO 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. +* +* DOUBANGO 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 DOUBANGO. +* +*/ +#ifndef TINYDAV_CODEC_H264_COMMON_H +#define TINYDAV_CODEC_H264_COMMON_H + +#include "tinydav_config.h" +#include "tinydav/codecs/h264/tdav_codec_h264_rtp.h" + +#include "tinymedia/tmedia_codec.h" +#include "tinymedia/tmedia_defaults.h" + +#include "tsk_memory.h" +#include "tsk_string.h" +#include "tsk_params.h" +#include "tsk_debug.h" + +#include <string.h> + + +TDAV_BEGIN_DECLS + +#if !defined(H264_MAX_BR) +# define H264_MAX_BR 452 +#endif +#if !defined(H264_MAX_MBPS) +# define H264_MAX_MBPS 11880 +#endif + +#if !defined(H264_PACKETIZATION_MODE) +# if METROPOLIS || 1 +# define H264_PACKETIZATION_MODE Single_NAL_Unit_Mode +# else +# define H264_PACKETIZATION_MODE Non_Interleaved_Mode +#endif +#endif + +#if !defined(H264_FS_MAX_COUNT) +# define H264_FS_MAX_COUNT 16 // max number of DPBFS in the list +#endif +#if !defined(H264_LEVEL_MAX_COUNT) +# define H264_LEVEL_MAX_COUNT 16 // Table A-1 – Level limits: "1", "1b"... "5.1" +#endif + +// Table A-1 – Level limits +static const int32_t MaxMBPS[H264_LEVEL_MAX_COUNT] = { 1485, 1485, 3000, 6000, 11880, 11880, 19800, 20250, 40500, 108000, 216000, 245760, 245760, 522240, 589824, 983040 }; +static const int32_t MaxFS[H264_LEVEL_MAX_COUNT] = { 99, 99, 396, 396, 396, 396, 792, 1620, 1620, 3600, 5120, 8192, 8192, 8704, 22080, 36864 }; +static const int32_t MaxDpbMbs[H264_LEVEL_MAX_COUNT] = { 396, 396, 900, 2376, 2376, 2376, 4752, 8100, 8100, 18000, 20480, 32768, 32768, 34816, 110400, 184320 }; +static const int32_t MaxBR[H264_LEVEL_MAX_COUNT] = { 64, 128, 192, 384, 768, 2000, 4000, 4000, 10000, 14000, 20000, 20000, 50000, 50000, 135000, 240000 }; +static const int32_t MaxCPB[H264_LEVEL_MAX_COUNT] = { 175, 350, 500, 1000, 2000, 2000, 4000, 4000, 10000, 14000, 20000, 25000, 62500, 62500, 135000, 240000 }; + +// From "enum level_idc_e" to zero-based index +// level_idc = (level.prefix * 10) + level.suffix. For example: 3.1 = 31. Exception for 1b = 9. +// usage: int32_t maxDpbMbs = MaxDpbMbs[HL_CODEC_264_LEVEL_TO_ZERO_BASED_INDEX[level_idc]]; +static const int32_t H264_LEVEL_TO_ZERO_BASED_INDEX[255] = { + 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 2, 3, 4, 4, 4, 4, 4, + 4, 4, 5, 6, 7, 7, 7, 7, 7, 7, 7, 7, 8, 9, 10, 10, 10, 10, 10, + 10, 10, 10, 11, 12, 13, 13, 13, 13, 13, 13, 13, 13, 14, 15, 15, + 15, 15, 15, 15, 15, 15, 15, 15, 16, 16, 16, 16, 16, 16, 16, 16, 16, + 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, + 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, + 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, + 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, + 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, + 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, + 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, + 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, + 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, + 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, + 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, + 16, 16, 16, 16, 16, 16, 16, 16, 16 +}; + +// Because of FD, declare it here +typedef enum packetization_mode_e{ + Unknown_Mode = -1, + Single_NAL_Unit_Mode = 0, /* Single NAL mode (Only nals from 1-23 are allowed) */ + Non_Interleaved_Mode = 1, /* Non-interleaved Mode: 1-23, 24 (STAP-A), 28 (FU-A) are allowed */ + Interleaved_Mode = 2 /* 25 (STAP-B), 26 (MTAP16), 27 (MTAP24), 28 (FU-A), and 29 (FU-B) are allowed.*/ +} +packetization_mode_t; + +typedef struct tdav_codec_h264_common_s +{ + TMEDIA_DECLARE_CODEC_VIDEO; + + profile_idc_t profile; + uint8_t profile_iop; + level_idc_t level; + unsigned maxFS; + + packetization_mode_t pack_mode_remote; // remote packetization mode + packetization_mode_t pack_mode_local; // local packetization mode + + struct{ + uint8_t* ptr; + tsk_size_t size; + } rtp; +} +tdav_codec_h264_common_t; +#define TDAV_CODEC_H264_COMMON(self) ((tdav_codec_h264_common_t*)(self)) +#define TDAV_DECLARE_CODEC_H264_COMMON tdav_codec_h264_common_t __video__ + +typedef struct tdav_codec_h264_common_level_size_xs +{ + level_idc_t level; + unsigned width; + unsigned height; + unsigned maxFS; // From "Table A-1 – Level limits" +} +tdav_codec_h264_common_level_size_xt; + +static const tdav_codec_h264_common_level_size_xt tdav_codec_h264_common_level_sizes [] = +{ + {level_idc_1_0, 128, 96, 99}, +#if 0 + {level_idc_1_b, 128, 96, 99}, +#endif + {level_idc_1_1, 176, 144, 396}, + {level_idc_1_2, 320, 240, 396}, + {level_idc_1_3, 352, 288, 396}, + {level_idc_2_0, 352, 288, 396}, + {level_idc_2_1, 480, 352, 792}, // Swap(352x480) + {level_idc_2_2, 720, 480, 1620}, + {level_idc_3_0, 720, 576, 1620}, + {level_idc_3_1, 1280, 720, 3600}, + {level_idc_3_2, 1280, 720, 5120}, + {level_idc_4_0, 2048, 1024, 8192}, + {level_idc_4_1, 2048, 1024, 8192}, + {level_idc_4_2, 2048, 1080, 8704}, + {level_idc_5_0, 2560, 1920, 22080}, + {level_idc_5_1, 3840, 2160, 32400}, + {level_idc_5_2, 4096, 2048, 32768} +}; + +static int tdav_codec_h264_common_size_from_level(level_idc_t level, unsigned *width, unsigned *height) +{ + tsk_size_t i; + for(i = 0; i < sizeof(tdav_codec_h264_common_level_sizes)/sizeof(tdav_codec_h264_common_level_sizes[0]); ++i){ + if(tdav_codec_h264_common_level_sizes[i].level == level){ + *width = tdav_codec_h264_common_level_sizes[i].width; + *height = tdav_codec_h264_common_level_sizes[i].height; + return 0; + } + } + return -1; +} + +static int tdav_codec_h264_common_size_from_fs(unsigned maxFS, unsigned *width, unsigned *height) +{ + tsk_size_t i; + int ret = -1; + for (i = 0; i < sizeof(tdav_codec_h264_common_level_sizes)/sizeof(tdav_codec_h264_common_level_sizes[0]); ++i){ + if (tdav_codec_h264_common_level_sizes[i].maxFS <= maxFS){ + *width = tdav_codec_h264_common_level_sizes[i].width; + *height = tdav_codec_h264_common_level_sizes[i].height; + ret = 0; + } + else { + break; + } + } + return ret; +} + +static int tdav_codec_h264_common_level_from_size(unsigned width, unsigned height, level_idc_t *level) +{ + tsk_size_t i; + unsigned maxFS = (((width + 15) >> 4) * ((height + 15) >> 4)); + static const tsk_size_t __tdav_codec_h264_common_level_sizes_count = sizeof(tdav_codec_h264_common_level_sizes)/sizeof(tdav_codec_h264_common_level_sizes[0]); + for (i = 0; i < __tdav_codec_h264_common_level_sizes_count; ++i){ + if (/*tdav_codec_h264_common_level_sizes[i].maxFS*/ ((tdav_codec_h264_common_level_sizes[i].width * tdav_codec_h264_common_level_sizes[i].height) >> 8) >= maxFS){ + *level = tdav_codec_h264_common_level_sizes[i].level; + return 0; + } + } + TSK_DEBUG_WARN("Failed to find default level for size=(%ux%u)", width, height); + *level = tdav_codec_h264_common_level_sizes[__tdav_codec_h264_common_level_sizes_count - 1].level; + return 0; +} + + +static int tdav_codec_h264_common_init(tdav_codec_h264_common_t * h264) +{ + if (h264) { + level_idc_t level; + // because at this step 'tmedia_codec_init()' is not called yet and we need default size to compute the H.264 level + if (TMEDIA_CODEC_VIDEO(h264)->out.width == 0 || TMEDIA_CODEC_VIDEO(h264)->in.width == 0) { + unsigned width, height; + tmedia_pref_video_size_t pref_size = tmedia_defaults_get_pref_video_size(); + if (tmedia_video_get_size(pref_size, &width, &height) == 0) { + TMEDIA_CODEC_VIDEO(h264)->out.width = TMEDIA_CODEC_VIDEO(h264)->in.width = width; + TMEDIA_CODEC_VIDEO(h264)->out.height = TMEDIA_CODEC_VIDEO(h264)->in.height = height; + } + } + h264->maxFS = (((TMEDIA_CODEC_VIDEO(h264)->out.width + 15) >> 4) * ((TMEDIA_CODEC_VIDEO(h264)->out.height + 15) >> 4)); + if ((tdav_codec_h264_common_level_from_size(TMEDIA_CODEC_VIDEO(h264)->out.width, TMEDIA_CODEC_VIDEO(h264)->out.height, &level)) == 0){ + h264->maxFS = TSK_MIN((int32_t)h264->maxFS, MaxFS[H264_LEVEL_TO_ZERO_BASED_INDEX[level]]); + h264->level = level; + } + h264->profile_iop = 0x80; + h264->pack_mode_local = H264_PACKETIZATION_MODE; + h264->pack_mode_remote = Unknown_Mode; + } + return 0; +} + +static int tdav_codec_h264_common_deinit(tdav_codec_h264_common_t * h264) +{ + TSK_DEBUG_INFO("tdav_codec_h264_common_deinit"); + if(h264){ + tmedia_codec_video_deinit(TMEDIA_CODEC_VIDEO(h264)); + TSK_FREE(h264->rtp.ptr); + h264->rtp.size = 0; + } + return 0; +} + +static int tdav_codec_h264_common_get_profile_and_level(const char* fmtp, profile_idc_t *profile, level_idc_t *level) +{ + tsk_size_t size = tsk_strlen(fmtp); + int start, end; + int ret = -1; + + *profile = profile_idc_none; + *level = level_idc_none; + + if((start = tsk_strindexOf(fmtp, size, "profile-level-id")) !=-1){ + tsk_param_t* param; + if((end = (int)tsk_strindexOf((fmtp+start), (tsk_size_t)(size-start), ";")) == -1){ + end = (int)size; + } + + if((param = tsk_params_parse_param((fmtp+start), (end-start)))){ + profile_idc_t p_idc; + level_idc_t l_idc; + if(param->value){ + tsk_strtrim_both(¶m->value); + } + + tdav_codec_h264_parse_profile(param->value, &p_idc, tsk_null, &l_idc); + + switch(p_idc){ + case profile_idc_baseline: + case profile_idc_main: + *profile = p_idc; + *level = l_idc; + ret = 0; + break; + case profile_idc_extended: + case profile_idc_high: + default: + /* Not supported */ + break; + } + + TSK_OBJECT_SAFE_FREE(param); + } + } + return ret; +} + +static tsk_bool_t tdav_codec_h264_common_sdp_att_match(tdav_codec_h264_common_t* h264, const char* att_name, const char* att_value) +{ + tsk_bool_t ret = tsk_true; + + if(!h264){ + TSK_DEBUG_ERROR("Invalid parameter"); + return tsk_false; + } + + TSK_DEBUG_INFO("[H.264] Trying to match [%s:%s]", att_name, att_value); + + if (tsk_striequals(att_name, "fmtp")) { + int val_int; + profile_idc_t profile; + level_idc_t level; + tsk_params_L_t* params; + + /* Check whether the profile match (If the profile is missing, then we consider that it's ok) */ + if (tdav_codec_h264_common_get_profile_and_level(att_value, &profile, &level) != 0) { + TSK_DEBUG_ERROR("Not valid profile-level: %s", att_value); + return tsk_false; + } + if (h264->profile != profile) { + return tsk_false; + } + else{ + if (h264->level != level) { + // change the output size only when the remote party request lower level. If it request higher (or same) level then, we send our preferred size. + if (h264->level > level) { + unsigned width, height; + h264->level = TSK_MIN(h264->level, level); + if (tdav_codec_h264_common_size_from_level(h264->level, &width, &height) != 0) { + return tsk_false; + } + // Do not change our size if it match the requested level + if (width < TMEDIA_CODEC_VIDEO(h264)->out.width || height < TMEDIA_CODEC_VIDEO(h264)->out.height) { + // Set "out" size. We must not send more than "MaxFS". + // Default "out" is equal to the preferred sized and initialized in init(). + // "TANDBERG/4120 (X7.2.2)" will terminate the call if frame size > maxFS + TMEDIA_CODEC_VIDEO(h264)->out.width = TSK_MIN(TMEDIA_CODEC_VIDEO(h264)->out.width, width); + TMEDIA_CODEC_VIDEO(h264)->out.height = TSK_MIN(TMEDIA_CODEC_VIDEO(h264)->out.height, height); + } + // Set default "in". Will be updated after receiving the first frame. + TMEDIA_CODEC_VIDEO(h264)->in.width = width; + TMEDIA_CODEC_VIDEO(h264)->in.height = height; + } + } + } + + /* e.g. profile-level-id=42e00a; packetization-mode=1; max-br=452; max-mbps=11880 */ + if ((params = tsk_params_fromstring(att_value, ";", tsk_true))) { + + /* === max-br ===*/ + if ((val_int = tsk_params_get_param_value_as_int(params, "max-br")) != -1) { + // should compare "max-br"? + TMEDIA_CODEC_VIDEO(h264)->out.max_br = val_int*1000; + } + + /* === max-fs ===*/ + if ((val_int = tsk_params_get_param_value_as_int(params, "max-fs")) != -1) { + unsigned width_max, height_max, maxFS, currFS; + currFS = (TMEDIA_CODEC_VIDEO(h264)->out.width * TMEDIA_CODEC_VIDEO(h264)->out.height) >> 8; + maxFS = TSK_MIN(h264->maxFS/*preferred*/, (unsigned)val_int/*proposed*/); // make sure we'll never send more than we advertised + if (currFS > maxFS) { // do not use default sizes when we already respect the MaxFS + if (tdav_codec_h264_common_size_from_fs(maxFS, &width_max, &height_max) == 0) { + TMEDIA_CODEC_VIDEO(h264)->out.width = TMEDIA_CODEC_VIDEO(h264)->in.width = width_max; + TMEDIA_CODEC_VIDEO(h264)->out.height = TMEDIA_CODEC_VIDEO(h264)->in.height = height_max; + } + } + } + + /* === max-mbps ===*/ + if ((val_int = tsk_params_get_param_value_as_int(params, "max-mbps")) != -1) { + // should compare "max-mbps"? + TMEDIA_CODEC_VIDEO(h264)->out.max_mbps = val_int*1000; + } + + /* === packetization-mode ===*/ + if ((val_int = tsk_params_get_param_value_as_int(params, "packetization-mode")) != -1) { + if ((packetization_mode_t)val_int == Single_NAL_Unit_Mode || (packetization_mode_t)val_int == Non_Interleaved_Mode) { + TDAV_CODEC_H264_COMMON(h264)->pack_mode_remote = (packetization_mode_t)val_int; + TDAV_CODEC_H264_COMMON(h264)->pack_mode_local = TSK_MAX(TDAV_CODEC_H264_COMMON(h264)->pack_mode_local, TDAV_CODEC_H264_COMMON(h264)->pack_mode_remote); + } + else { + TSK_DEBUG_INFO("packetization-mode not matching"); + ret = tsk_false; + goto bail; + } + } + } +bail: + TSK_OBJECT_SAFE_FREE(params); + } + else if(tsk_striequals(att_name, "imageattr")){ + unsigned in_width, in_height, out_width, out_height; + unsigned width, height; + tsk_size_t s; + if(tmedia_parse_video_imageattr(att_value, TMEDIA_CODEC_VIDEO(h264)->pref_size, &in_width, &in_height, &out_width, &out_height) != 0){ + return tsk_false; + } + // check that 'imageattr' is comform to H.264 'profile-level' + if(tdav_codec_h264_common_size_from_level(h264->level, &width, &height) != 0){ + return tsk_false; + } + if((s = ((width * height * 3) >> 1)) < ((in_width * in_height * 3) >> 1) || s < ((out_width * out_height * 3) >> 1)){ + return tsk_false; + } + + TMEDIA_CODEC_VIDEO(h264)->in.width = in_width; + TMEDIA_CODEC_VIDEO(h264)->in.height = in_height; + TMEDIA_CODEC_VIDEO(h264)->out.width = out_width; + TMEDIA_CODEC_VIDEO(h264)->out.height = out_height; + } + + return ret; +} + +static char* tdav_codec_h264_common_sdp_att_get(const tdav_codec_h264_common_t* h264, const char* att_name) +{ + if(!h264 || !att_name){ + TSK_DEBUG_ERROR("Invalid parameter"); + return tsk_null; + } + + if (tsk_striequals(att_name, "fmtp")) { + char* fmtp = tsk_null; +#if 1 + // Required by "TANDBERG/4120 (X7.2.2)" and CISCO TelePresence + tsk_sprintf(&fmtp, "profile-level-id=%x;max-mbps=%d;max-fs=%d", + ((h264->profile << 16) | (h264->profile_iop << 8) | (h264->level & 0xff)), + MaxMBPS[H264_LEVEL_TO_ZERO_BASED_INDEX[h264->level]], + h264->maxFS + ); + // Do not restrict packetisation-mode until we knwon what the remote party supports + if (h264->pack_mode_remote != Unknown_Mode) { + tsk_strcat_2(&fmtp, ";packetization-mode=%d", h264->pack_mode_local); + } +#else + tsk_sprintf(&fmtp, "profile-level-id=%x; packetization-mode=%d", ((h264->profile << 16) | (h264->profile_iop << 8) | (h264->level & 0xff)), h264->pack_mode); +#endif + return fmtp; + } + else if(tsk_striequals(att_name, "imageattr")){ + return tmedia_get_video_imageattr(TMEDIA_CODEC_VIDEO(h264)->pref_size, + TMEDIA_CODEC_VIDEO(h264)->in.width, TMEDIA_CODEC_VIDEO(h264)->in.height, TMEDIA_CODEC_VIDEO(h264)->out.width, TMEDIA_CODEC_VIDEO(h264)->out.height); + } + return tsk_null; +} + + +TDAV_END_DECLS + +#endif /* TINYDAV_CODEC_H264_COMMON_H */ |
