diff options
Diffstat (limited to 'tinyDAV/src/codecs/fec/tdav_codec_ulpfec.c')
| -rwxr-xr-x | tinyDAV/src/codecs/fec/tdav_codec_ulpfec.c | 588 |
1 files changed, 293 insertions, 295 deletions
diff --git a/tinyDAV/src/codecs/fec/tdav_codec_ulpfec.c b/tinyDAV/src/codecs/fec/tdav_codec_ulpfec.c index f492a52..0e78b6a 100755 --- a/tinyDAV/src/codecs/fec/tdav_codec_ulpfec.c +++ b/tinyDAV/src/codecs/fec/tdav_codec_ulpfec.c @@ -31,57 +31,54 @@ #define TDAV_FEC_PKT_HDR_SIZE 10 -typedef struct tdav_codec_ulpfec_s -{ - TMEDIA_DECLARE_CODEC_VIDEO; +typedef struct tdav_codec_ulpfec_s { + TMEDIA_DECLARE_CODEC_VIDEO; - struct{ - struct tdav_fec_pkt_s* pkt; - } encoder; + struct { + struct tdav_fec_pkt_s* pkt; + } encoder; } tdav_codec_ulpfec_t; // // FEC LEVEL // -typedef struct tdav_fec_level_s -{ - TSK_DECLARE_OBJECT; - - struct{ // 7.4. FEC Level Header for FEC Packets - uint16_t length; - uint64_t mask; - tsk_size_t mask_size; // in bits - } hdr; - struct{ - uint8_t* ptr; - tsk_size_t size; - }payload; -}tdav_fec_level_t; +typedef struct tdav_fec_level_s { + TSK_DECLARE_OBJECT; + + struct { // 7.4. FEC Level Header for FEC Packets + uint16_t length; + uint64_t mask; + tsk_size_t mask_size; // in bits + } hdr; + struct { + uint8_t* ptr; + tsk_size_t size; + } payload; +} tdav_fec_level_t; typedef tsk_list_t tdav_fec_levels_L_t; static tsk_object_t* tdav_fec_level_ctor(tsk_object_t * self, va_list * app) { - tdav_fec_level_t *level = self; - if (level){ - level->hdr.mask_size = 16; // L=0 - } - return self; + tdav_fec_level_t *level = self; + if (level) { + level->hdr.mask_size = 16; // L=0 + } + return self; } static tsk_object_t* tdav_fec_level_dtor(tsk_object_t * self) { - tdav_fec_level_t *level = self; - if (level){ - TSK_FREE(level->payload.ptr); - } + tdav_fec_level_t *level = self; + if (level) { + TSK_FREE(level->payload.ptr); + } - return self; + return self; } -static const tsk_object_def_t tdav_fec_level_def_s = -{ - sizeof(tdav_fec_level_t), - tdav_fec_level_ctor, - tdav_fec_level_dtor, - tsk_null, +static const tsk_object_def_t tdav_fec_level_def_s = { + sizeof(tdav_fec_level_t), + tdav_fec_level_ctor, + tdav_fec_level_dtor, + tsk_null, }; const tsk_object_def_t *tdav_fec_level_def_t = &tdav_fec_level_def_s; @@ -89,271 +86,274 @@ const tsk_object_def_t *tdav_fec_level_def_t = &tdav_fec_level_def_s; // // FEC PACKET // -typedef struct tdav_fec_pkt_s -{ - TSK_DECLARE_OBJECT; - - struct{ // RFC 5109 - 7.3. FEC Header for FEC Packets - unsigned E : 1; - unsigned L : 1; - unsigned P : 1; - unsigned X : 1; - unsigned CC : 4; - unsigned M : 1; - unsigned PT : 7; - struct{ - uint16_t value; - unsigned set : 1; - }SN_base; - uint32_t TS; - uint16_t length; - }hdr; - - tdav_fec_levels_L_t* levels; +typedef struct tdav_fec_pkt_s { + TSK_DECLARE_OBJECT; + + struct { // RFC 5109 - 7.3. FEC Header for FEC Packets + unsigned E : 1; + unsigned L : 1; + unsigned P : 1; + unsigned X : 1; + unsigned CC : 4; + unsigned M : 1; + unsigned PT : 7; + struct { + uint16_t value; + unsigned set : 1; + } SN_base; + uint32_t TS; + uint16_t length; + } hdr; + + tdav_fec_levels_L_t* levels; } tdav_fec_pkt_t; static tsk_object_t* tdav_fec_pkt_ctor(tsk_object_t * self, va_list * app) { - tdav_fec_pkt_t *pkt = self; - if (pkt){ - if (!(pkt->levels = tsk_list_create())){ - TSK_DEBUG_ERROR("Failed to create levels"); - return tsk_null; - } - } - return self; + tdav_fec_pkt_t *pkt = self; + if (pkt) { + if (!(pkt->levels = tsk_list_create())) { + TSK_DEBUG_ERROR("Failed to create levels"); + return tsk_null; + } + } + return self; } static tsk_object_t* tdav_fec_pkt_dtor(tsk_object_t * self) { - tdav_fec_pkt_t *pkt = self; - if (pkt){ - TSK_OBJECT_SAFE_FREE(pkt->levels); - } + tdav_fec_pkt_t *pkt = self; + if (pkt) { + TSK_OBJECT_SAFE_FREE(pkt->levels); + } - return self; + return self; } static int tdav_fec_pkt_cmp(const tsk_object_t *_p1, const tsk_object_t *_p2) { - const tdav_fec_pkt_t *p1 = _p1; - const tdav_fec_pkt_t *p2 = _p2; - - if (p1 && p2){ - return (int)(p1->hdr.SN_base.value - p2->hdr.SN_base.value); - } - else if (!p1 && !p2) return 0; - else return -1; + const tdav_fec_pkt_t *p1 = _p1; + const tdav_fec_pkt_t *p2 = _p2; + + if (p1 && p2) { + return (int)(p1->hdr.SN_base.value - p2->hdr.SN_base.value); + } + else if (!p1 && !p2) { + return 0; + } + else { + return -1; + } } -static const tsk_object_def_t tdav_fec_pkt_def_s = -{ - sizeof(tdav_fec_pkt_t), - tdav_fec_pkt_ctor, - tdav_fec_pkt_dtor, - tdav_fec_pkt_cmp, +static const tsk_object_def_t tdav_fec_pkt_def_s = { + sizeof(tdav_fec_pkt_t), + tdav_fec_pkt_ctor, + tdav_fec_pkt_dtor, + tdav_fec_pkt_cmp, }; const tsk_object_def_t *tdav_fec_pkt_def_t = &tdav_fec_pkt_def_s; tsk_size_t tdav_codec_ulpfec_guess_serialbuff_size(const tdav_codec_ulpfec_t* self) { - tsk_size_t size = TDAV_FEC_PKT_HDR_SIZE; - tsk_list_item_t *item; - tdav_fec_level_t* level; - - if (!self){ - TSK_DEBUG_ERROR("Invalid parameter"); - return 0; - } - - tsk_list_foreach(item, self->encoder.pkt->levels){ - if (!(level = item->data)){ - continue; - } - size += 2 /* Protection length */ + (level->hdr.mask_size >> 3) + level->hdr.length; - } - - return size; + tsk_size_t size = TDAV_FEC_PKT_HDR_SIZE; + tsk_list_item_t *item; + tdav_fec_level_t* level; + + if (!self) { + TSK_DEBUG_ERROR("Invalid parameter"); + return 0; + } + + tsk_list_foreach(item, self->encoder.pkt->levels) { + if (!(level = item->data)) { + continue; + } + size += 2 /* Protection length */ + (level->hdr.mask_size >> 3) + level->hdr.length; + } + + return size; } int tdav_codec_ulpfec_enc_reset(tdav_codec_ulpfec_t* self) { - tsk_list_item_t *item; - tdav_fec_level_t* level; - - if (!self || !self->encoder.pkt){ - TSK_DEBUG_ERROR("invalid parameter"); - return -1; - } - - // reset packet - memset(&self->encoder.pkt->hdr, 0, sizeof(self->encoder.pkt->hdr)); - - // reset levels - tsk_list_foreach(item, self->encoder.pkt->levels){ - if ((level = item->data)){ - memset(&level->hdr, 0, sizeof(level->hdr)); - if (level->payload.ptr){ - memset(level->payload.ptr, 0, level->payload.size); - } - } - } - return 0; + tsk_list_item_t *item; + tdav_fec_level_t* level; + + if (!self || !self->encoder.pkt) { + TSK_DEBUG_ERROR("invalid parameter"); + return -1; + } + + // reset packet + memset(&self->encoder.pkt->hdr, 0, sizeof(self->encoder.pkt->hdr)); + + // reset levels + tsk_list_foreach(item, self->encoder.pkt->levels) { + if ((level = item->data)) { + memset(&level->hdr, 0, sizeof(level->hdr)); + if (level->payload.ptr) { + memset(level->payload.ptr, 0, level->payload.size); + } + } + } + return 0; } int tdav_codec_ulpfec_enc_protect(tdav_codec_ulpfec_t* self, const trtp_rtp_packet_t* rtp_packet) { - if (!self || !self->encoder.pkt || !rtp_packet || !rtp_packet->header){ - TSK_DEBUG_ERROR("invalid parameter"); - return -1; - } - - // Packet - self->encoder.pkt->hdr.P ^= rtp_packet->header->padding; - self->encoder.pkt->hdr.X ^= rtp_packet->header->extension; - self->encoder.pkt->hdr.CC ^= rtp_packet->header->csrc_count; - self->encoder.pkt->hdr.M ^= rtp_packet->header->marker; - self->encoder.pkt->hdr.PT ^= rtp_packet->header->payload_type; - if (!self->encoder.pkt->hdr.SN_base.set){ - self->encoder.pkt->hdr.SN_base.value = rtp_packet->header->seq_num; - self->encoder.pkt->hdr.SN_base.set = 1; - } - else{ - self->encoder.pkt->hdr.SN_base.value = TSK_MIN(self->encoder.pkt->hdr.SN_base.value, rtp_packet->header->seq_num); - } - self->encoder.pkt->hdr.TS ^= rtp_packet->header->timestamp; - self->encoder.pkt->hdr.length ^= (trtp_rtp_packet_guess_serialbuff_size(rtp_packet) - TRTP_RTP_HEADER_MIN_SIZE); - - // Level - // For now, always single-level protection - { - tdav_fec_level_t* level0 = TSK_LIST_FIRST_DATA(self->encoder.pkt->levels); - const uint8_t* rtp_payload = (const uint8_t*)(rtp_packet->payload.data_const ? rtp_packet->payload.data_const : rtp_packet->payload.data); - tsk_size_t i; - if (!level0){ - tdav_fec_level_t* _level0; - if (!(_level0 = tsk_object_new(tdav_fec_level_def_t))){ - TSK_DEBUG_ERROR("Failed to create level"); - return -2; - } - level0 = _level0; - tsk_list_push_back_data(self->encoder.pkt->levels, (void**)&_level0); - } - if (level0->payload.size < rtp_packet->payload.size){ - if (!(level0->payload.ptr = tsk_realloc(level0->payload.ptr, rtp_packet->payload.size))){ - TSK_DEBUG_ERROR("Failed to realloc size %d", rtp_packet->payload.size); - level0->payload.size = 0; - return -3; - } - level0->payload.size = rtp_packet->payload.size; - } - for (i = 0; i < rtp_packet->payload.size; ++i){ - level0->payload.ptr[i] ^= rtp_payload[i]; - } - level0->hdr.mask_size = self->encoder.pkt->hdr.L ? 48 : 16; - level0->hdr.mask |= (uint64_t)((uint64_t)1 << (level0->hdr.mask_size - (rtp_packet->header->seq_num - self->encoder.pkt->hdr.SN_base.value))); - level0->hdr.length = (uint16_t)(TSK_MAX(level0->hdr.length, rtp_packet->payload.size)); - } - - return 0; + if (!self || !self->encoder.pkt || !rtp_packet || !rtp_packet->header) { + TSK_DEBUG_ERROR("invalid parameter"); + return -1; + } + + // Packet + self->encoder.pkt->hdr.P ^= rtp_packet->header->padding; + self->encoder.pkt->hdr.X ^= rtp_packet->header->extension; + self->encoder.pkt->hdr.CC ^= rtp_packet->header->csrc_count; + self->encoder.pkt->hdr.M ^= rtp_packet->header->marker; + self->encoder.pkt->hdr.PT ^= rtp_packet->header->payload_type; + if (!self->encoder.pkt->hdr.SN_base.set) { + self->encoder.pkt->hdr.SN_base.value = rtp_packet->header->seq_num; + self->encoder.pkt->hdr.SN_base.set = 1; + } + else { + self->encoder.pkt->hdr.SN_base.value = TSK_MIN(self->encoder.pkt->hdr.SN_base.value, rtp_packet->header->seq_num); + } + self->encoder.pkt->hdr.TS ^= rtp_packet->header->timestamp; + self->encoder.pkt->hdr.length ^= (trtp_rtp_packet_guess_serialbuff_size(rtp_packet) - TRTP_RTP_HEADER_MIN_SIZE); + + // Level + // For now, always single-level protection + { + tdav_fec_level_t* level0 = TSK_LIST_FIRST_DATA(self->encoder.pkt->levels); + const uint8_t* rtp_payload = (const uint8_t*)(rtp_packet->payload.data_const ? rtp_packet->payload.data_const : rtp_packet->payload.data); + tsk_size_t i; + if (!level0) { + tdav_fec_level_t* _level0; + if (!(_level0 = tsk_object_new(tdav_fec_level_def_t))) { + TSK_DEBUG_ERROR("Failed to create level"); + return -2; + } + level0 = _level0; + tsk_list_push_back_data(self->encoder.pkt->levels, (void**)&_level0); + } + if (level0->payload.size < rtp_packet->payload.size) { + if (!(level0->payload.ptr = tsk_realloc(level0->payload.ptr, rtp_packet->payload.size))) { + TSK_DEBUG_ERROR("Failed to realloc size %d", rtp_packet->payload.size); + level0->payload.size = 0; + return -3; + } + level0->payload.size = rtp_packet->payload.size; + } + for (i = 0; i < rtp_packet->payload.size; ++i) { + level0->payload.ptr[i] ^= rtp_payload[i]; + } + level0->hdr.mask_size = self->encoder.pkt->hdr.L ? 48 : 16; + level0->hdr.mask |= (uint64_t)((uint64_t)1 << (level0->hdr.mask_size - (rtp_packet->header->seq_num - self->encoder.pkt->hdr.SN_base.value))); + level0->hdr.length = (uint16_t)(TSK_MAX(level0->hdr.length, rtp_packet->payload.size)); + } + + return 0; } tsk_size_t tdav_codec_ulpfec_enc_serialize(const tdav_codec_ulpfec_t* self, void** out_data, tsk_size_t* out_max_size) { - uint8_t* pdata; - tsk_size_t xsize; - int32_t i; - tsk_list_item_t* item; - tdav_fec_level_t* level; - - if (!self || !self->encoder.pkt || !out_data){ - TSK_DEBUG_ERROR("Invalid parameter"); - return 0; - } - xsize = tdav_codec_ulpfec_guess_serialbuff_size(self); - - if (*out_max_size < xsize){ - if (!(*out_data = tsk_realloc(*out_data, xsize))){ - TSK_DEBUG_ERROR("Failed to reallocate buffer with size =%d", xsize); - *out_max_size = 0; - return 0; - } - *out_max_size = xsize; - } - pdata = (uint8_t*)*out_data; - - // E(1), L(1), P(1), X(1), CC(4) - pdata[0] = - (self->encoder.pkt->hdr.E << 7) | - (self->encoder.pkt->hdr.L << 6) | - (self->encoder.pkt->hdr.P << 5) | - (self->encoder.pkt->hdr.X << 4) | - (self->encoder.pkt->hdr.CC & 0x0F); - // M(1), PT(7) - pdata[1] = (self->encoder.pkt->hdr.M << 7) | (self->encoder.pkt->hdr.PT & 0x7F); - // SN base (16) - pdata[2] = (self->encoder.pkt->hdr.SN_base.value >> 8); - pdata[3] = (self->encoder.pkt->hdr.SN_base.value & 0xFF); - // TS (32) - pdata[4] = self->encoder.pkt->hdr.TS >> 24; - pdata[5] = (self->encoder.pkt->hdr.TS >> 16) & 0xFF; - pdata[6] = (self->encoder.pkt->hdr.TS >> 8) & 0xFF; - pdata[7] = (self->encoder.pkt->hdr.TS & 0xFF); - // Length (16) - pdata[8] = (self->encoder.pkt->hdr.length >> 8); - pdata[9] = (self->encoder.pkt->hdr.length & 0xFF); - - pdata += 10; - - tsk_list_foreach(item, self->encoder.pkt->levels){ - if (!(level = item->data)){ - continue; - } - // Protection length (16) - pdata[0] = (level->hdr.length >> 8); - pdata[1] = (level->hdr.length & 0xFF); - pdata += 2; - // mask (16 or 48) - for (i = (int32_t)(level->hdr.mask_size - 8); i >= 0; i -= 8){ - *pdata = ((level->hdr.mask >> i) & 0xFF); ++pdata; - } - // payload - memcpy(pdata, level->payload.ptr, level->hdr.length); - } - - return xsize; + uint8_t* pdata; + tsk_size_t xsize; + int32_t i; + tsk_list_item_t* item; + tdav_fec_level_t* level; + + if (!self || !self->encoder.pkt || !out_data) { + TSK_DEBUG_ERROR("Invalid parameter"); + return 0; + } + xsize = tdav_codec_ulpfec_guess_serialbuff_size(self); + + if (*out_max_size < xsize) { + if (!(*out_data = tsk_realloc(*out_data, xsize))) { + TSK_DEBUG_ERROR("Failed to reallocate buffer with size =%d", xsize); + *out_max_size = 0; + return 0; + } + *out_max_size = xsize; + } + pdata = (uint8_t*)*out_data; + + // E(1), L(1), P(1), X(1), CC(4) + pdata[0] = + (self->encoder.pkt->hdr.E << 7) | + (self->encoder.pkt->hdr.L << 6) | + (self->encoder.pkt->hdr.P << 5) | + (self->encoder.pkt->hdr.X << 4) | + (self->encoder.pkt->hdr.CC & 0x0F); + // M(1), PT(7) + pdata[1] = (self->encoder.pkt->hdr.M << 7) | (self->encoder.pkt->hdr.PT & 0x7F); + // SN base (16) + pdata[2] = (self->encoder.pkt->hdr.SN_base.value >> 8); + pdata[3] = (self->encoder.pkt->hdr.SN_base.value & 0xFF); + // TS (32) + pdata[4] = self->encoder.pkt->hdr.TS >> 24; + pdata[5] = (self->encoder.pkt->hdr.TS >> 16) & 0xFF; + pdata[6] = (self->encoder.pkt->hdr.TS >> 8) & 0xFF; + pdata[7] = (self->encoder.pkt->hdr.TS & 0xFF); + // Length (16) + pdata[8] = (self->encoder.pkt->hdr.length >> 8); + pdata[9] = (self->encoder.pkt->hdr.length & 0xFF); + + pdata += 10; + + tsk_list_foreach(item, self->encoder.pkt->levels) { + if (!(level = item->data)) { + continue; + } + // Protection length (16) + pdata[0] = (level->hdr.length >> 8); + pdata[1] = (level->hdr.length & 0xFF); + pdata += 2; + // mask (16 or 48) + for (i = (int32_t)(level->hdr.mask_size - 8); i >= 0; i -= 8) { + *pdata = ((level->hdr.mask >> i) & 0xFF); + ++pdata; + } + // payload + memcpy(pdata, level->payload.ptr, level->hdr.length); + } + + return xsize; } static int tdav_codec_ulpfec_open(tmedia_codec_t* self) { - return 0; + return 0; } static int tdav_codec_ulpfec_close(tmedia_codec_t* self) { - return 0; + return 0; } static tsk_size_t tdav_codec_ulpfec_encode(tmedia_codec_t* self, const void* in_data, tsk_size_t in_size, void** out_data, tsk_size_t* out_max_size) { - TSK_DEBUG_ERROR("Not expected to be called"); - return 0; + TSK_DEBUG_ERROR("Not expected to be called"); + return 0; } static tsk_size_t tdav_codec_ulpfec_decode(tmedia_codec_t* self, const void* in_data, tsk_size_t in_size, void** out_data, tsk_size_t* out_max_size, const tsk_object_t* proto_hdr) { - TSK_DEBUG_ERROR("Not expected to be called"); - return 0; + TSK_DEBUG_ERROR("Not expected to be called"); + return 0; } static tsk_bool_t tdav_codec_ulpfec_sdp_att_match(const tmedia_codec_t* codec, const char* att_name, const char* att_value) { - return tsk_true; + return tsk_true; } static char* tdav_codec_ulpfec_sdp_att_get(const tmedia_codec_t* self, const char* att_name) { - return tsk_null; + return tsk_null; } @@ -362,63 +362,61 @@ static char* tdav_codec_ulpfec_sdp_att_get(const tmedia_codec_t* self, const cha /* constructor */ static tsk_object_t* tdav_codec_ulpfec_ctor(tsk_object_t * self, va_list * app) { - tdav_codec_ulpfec_t *ulpfec = self; - if (ulpfec){ - /* init base: called by tmedia_codec_create() */ - /* init self */ - if (!(ulpfec->encoder.pkt = tsk_object_new(tdav_fec_pkt_def_t))){ - TSK_DEBUG_ERROR("Failed to create FEC packet"); - return tsk_null; - } - } - return self; + tdav_codec_ulpfec_t *ulpfec = self; + if (ulpfec) { + /* init base: called by tmedia_codec_create() */ + /* init self */ + if (!(ulpfec->encoder.pkt = tsk_object_new(tdav_fec_pkt_def_t))) { + TSK_DEBUG_ERROR("Failed to create FEC packet"); + return tsk_null; + } + } + return self; } /* destructor */ static tsk_object_t* tdav_codec_ulpfec_dtor(tsk_object_t * self) { - tdav_codec_ulpfec_t *ulpfec = self; - if (ulpfec){ - /* deinit base */ - tmedia_codec_video_deinit(ulpfec); - /* deinit self */ - TSK_OBJECT_SAFE_FREE(ulpfec->encoder.pkt); - } - - return self; + tdav_codec_ulpfec_t *ulpfec = self; + if (ulpfec) { + /* deinit base */ + tmedia_codec_video_deinit(ulpfec); + /* deinit self */ + TSK_OBJECT_SAFE_FREE(ulpfec->encoder.pkt); + } + + return self; } /* object definition */ -static const tsk_object_def_t tdav_codec_ulpfec_def_s = -{ - sizeof(tdav_codec_ulpfec_t), - tdav_codec_ulpfec_ctor, - tdav_codec_ulpfec_dtor, - tmedia_codec_cmp, +static const tsk_object_def_t tdav_codec_ulpfec_def_s = { + sizeof(tdav_codec_ulpfec_t), + tdav_codec_ulpfec_ctor, + tdav_codec_ulpfec_dtor, + tmedia_codec_cmp, }; /* plugin definition*/ -static const tmedia_codec_plugin_def_t tdav_codec_ulpfec_plugin_def_s = -{ - &tdav_codec_ulpfec_def_s, - - tmedia_video, - tmedia_codec_id_none, // fake codec - "ulpfec", - "ulpfec codec", - TMEDIA_CODEC_FORMAT_ULPFEC, - tsk_true, - 90000, // rate - - /* audio */ - { 0 }, - - /* video (defaul width,height,fps) */ - { 176, 144, 15 }, - - tsk_null, // set() - tdav_codec_ulpfec_open, - tdav_codec_ulpfec_close, - tdav_codec_ulpfec_encode, - tdav_codec_ulpfec_decode, - tdav_codec_ulpfec_sdp_att_match, - tdav_codec_ulpfec_sdp_att_get +static const tmedia_codec_plugin_def_t tdav_codec_ulpfec_plugin_def_s = { + &tdav_codec_ulpfec_def_s, + + tmedia_video, + tmedia_codec_id_none, // fake codec + "ulpfec", + "ulpfec codec", + TMEDIA_CODEC_FORMAT_ULPFEC, + tsk_true, + 90000, // rate + + /* audio */ + { 0 }, + + /* video (defaul width,height,fps) */ + { 176, 144, 15 }, + + tsk_null, // set() + tdav_codec_ulpfec_open, + tdav_codec_ulpfec_close, + tdav_codec_ulpfec_encode, + tdav_codec_ulpfec_decode, + tdav_codec_ulpfec_sdp_att_match, + tdav_codec_ulpfec_sdp_att_get }; const tmedia_codec_plugin_def_t *tdav_codec_ulpfec_plugin_def_t = &tdav_codec_ulpfec_plugin_def_s;
\ No newline at end of file |
