| /* ------------------------------------------------------------------ |
| * Copyright (C) 2008 PacketVideo |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either |
| * express or implied. |
| * See the License for the specific language governing permissions |
| * and limitations under the License. |
| * ------------------------------------------------------------------- |
| */ |
| /* */ |
| /* ===================================================================== */ |
| /* File: aacMediaInfoParser.cpp */ |
| /* Description: */ |
| /* */ |
| /* */ |
| /* Rev: */ |
| /* Created: 05/24/01 */ |
| /* ===================================================================== */ |
| /* */ |
| /* Revision History: */ |
| /* */ |
| /* Rev: */ |
| /* Date: */ |
| /* Description: */ |
| /* */ |
| /* //////////////////////////////////////////////////////////////////////// */ |
| |
| #include "aac_media_info_parser.h" |
| #include "oscl_string_utils.h" |
| #include "oscl_string_containers.h" |
| |
| /* ======================================================================== */ |
| /* Function : parsePayload(char *buff, mediaInfo* aacA,int index) */ |
| /* Date : 05/24/2001 */ |
| /* Purpose : Parses AAC text and fills out the aac media structure */ |
| /* In/out : */ |
| /* Return : */ |
| /* Modified : */ |
| /* ======================================================================== */ |
| SDP_ERROR_CODE |
| SDPAACMediaInfoParser::parseMediaInfo(const char *buff, const int index, SDPInfo *sdp, payloadVector payload_vec, bool isSipSdp, int alt_id, bool alt_def_id) |
| { |
| const char *current_start = buff; //Pointer to the beginning of the media text |
| const char *end = buff + index; //Pointer to the end of the media text |
| const char *line_start_ptr, *line_end_ptr; |
| int decLength = 0; |
| int fmtp_cnt = 0; |
| SDPAllocDestructDealloc<uint8> SDP_alloc; |
| |
| while (get_next_line(current_start, end, |
| line_start_ptr, line_end_ptr)) |
| { |
| if ((!oscl_strncmp(line_start_ptr, "a=alt:", oscl_strlen("a=alt:"))) && (alt_def_id == false)) |
| { |
| line_start_ptr += oscl_strlen("a=alt:"); |
| for (; *line_start_ptr != ':'; line_start_ptr++); |
| line_start_ptr = line_start_ptr + 1; |
| } |
| |
| if (!oscl_strncmp(line_start_ptr, "a=fmtp:", oscl_strlen("a=fmtp:"))) |
| { |
| |
| const char *tmp_start_line, *tmp_end_line; |
| |
| fmtp_cnt++; |
| |
| tmp_start_line = line_start_ptr + oscl_strlen("a=fmtp:"); |
| tmp_start_line = skip_whitespace(tmp_start_line, line_end_ptr); |
| if (tmp_start_line >= line_end_ptr) |
| { |
| break; |
| } |
| tmp_end_line = skip_to_whitespace(tmp_start_line, line_end_ptr); |
| if (tmp_end_line < tmp_start_line) |
| { |
| break; |
| } |
| tmp_start_line = tmp_end_line + 1; |
| tmp_start_line = skip_whitespace(tmp_start_line, line_end_ptr); |
| if (tmp_start_line >= line_end_ptr) |
| { |
| break; |
| } |
| int ii = 0; |
| const char *temp = tmp_start_line; |
| for (ii = 0; ii < (line_end_ptr - tmp_start_line) ; ii++) |
| { |
| if ((tmp_start_line[ii] == ';') || (ii == (line_end_ptr - tmp_start_line - 1))) |
| { |
| tmp_end_line = tmp_start_line + ii; |
| if ((line_end_ptr - tmp_start_line - 1) == ii) |
| { |
| tmp_end_line++; |
| } |
| |
| if (!oscl_strncmp(temp, "config=", oscl_strlen("config="))) |
| { |
| uint32 currentLength; |
| temp += oscl_strlen("config="); |
| temp = skip_whitespace(temp, line_end_ptr); |
| if (temp >= line_end_ptr) |
| { |
| PVMF_SDP_PARSER_LOGERROR((0, "SDPAACMediaInfoParser::parseMediaInfo - no data in config= field")); |
| return SDP_BAD_MEDIA_FMTP; |
| } |
| currentLength = (int)(tmp_end_line - temp) / 2; |
| |
| if (decLength < (int) currentLength) |
| |
| decLength = currentLength; |
| } |
| if (tmp_end_line != line_end_ptr) temp = tmp_end_line + 1; |
| temp = skip_whitespace(temp, line_end_ptr); |
| if (temp >= line_end_ptr) |
| { |
| PVMF_SDP_PARSER_LOGERROR((0, "SDPAACMediaInfoParser::parseMediaInfo - Format in a=fmtp line is incorrect")); |
| return SDP_BAD_MEDIA_FMTP; |
| } |
| } |
| } |
| } |
| current_start = line_end_ptr + 1; |
| } |
| |
| if (fmtp_cnt == 0) // a=fmtp field not found |
| { |
| PVMF_SDP_PARSER_LOGERROR((0, "SDPAACMediaInfoParser::parseMediaInfo - a=fmtp field not found")); |
| return SDP_FAILURE_NO_FMTP_FIELD; |
| } |
| |
| bool altMedia = false; |
| if (!alt_id || (alt_def_id == true)) |
| altMedia = false; |
| else |
| altMedia = true; |
| |
| //Allocate media info class here |
| void *memory = sdp->alloc(sizeof(aac_mediaInfo), altMedia); |
| if (NULL == memory) |
| { |
| PVMF_SDP_PARSER_LOGERROR((0, "SDPAACMediaInfoParser::parseMediaInfo - unable to allocate memory to media parser")); |
| return SDP_NO_MEMORY; |
| } |
| else |
| { |
| aac_mediaInfo *aacA = OSCL_PLACEMENT_NEW(memory, aac_mediaInfo()); |
| |
| aacA->setMediaInfoID(sdp->getMediaObjectIndex()); |
| |
| // Allocate memory to the payload specific objects |
| for (uint32 ii = 0; ii < payload_vec.size(); ii++) |
| { |
| void* mem = aacA->alloc(sizeof(AacPayloadSpecificInfoType)); |
| if (mem == NULL) |
| { |
| return SDP_NO_MEMORY; |
| } |
| else |
| { |
| OSCL_PLACEMENT_NEW(mem, AacPayloadSpecificInfoType(payload_vec[ii])); |
| } |
| } |
| |
| |
| if (alt_id && !alt_def_id) |
| { |
| sdp->copyFmDefMedia(aacA); |
| aacA->resetAlternateTrackId(); |
| aacA->resetDependentTrackId(); |
| } |
| |
| SDP_ERROR_CODE status = baseMediaInfoParser(buff, aacA, index, alt_id, alt_def_id, isSipSdp); |
| if (status != SDP_SUCCESS) |
| { |
| return status; |
| } |
| |
| |
| current_start = buff; |
| |
| while (get_next_line(current_start, end, |
| line_start_ptr, line_end_ptr)) |
| { |
| switch (*line_start_ptr) |
| { |
| case 'a': |
| { |
| const char *sptr; |
| if ((!oscl_strncmp(line_start_ptr, "a=alt:", oscl_strlen("a=alt:"))) && (alt_def_id == false)) |
| { |
| line_start_ptr += oscl_strlen("a=alt:"); |
| for (; *line_start_ptr != ':'; line_start_ptr++); |
| line_start_ptr = line_start_ptr + 1; |
| } |
| if (!oscl_strncmp(line_start_ptr, "a=lang:", oscl_strlen("a=lang:"))) |
| { |
| sptr = line_start_ptr + oscl_strlen("a=lang:"); |
| sptr = skip_whitespace(sptr, line_end_ptr); |
| if (sptr >= line_end_ptr) |
| { |
| PVMF_SDP_PARSER_LOGERROR((0, "SDPAACMediaInfoParser::parseMediaInfo - a=lang field incorrect")); |
| return SDP_BAD_MEDIA_LANG_FIELD; |
| } |
| OsclMemoryFragment memFrag; |
| memFrag.ptr = (void*)sptr; |
| memFrag.len = (line_end_ptr - sptr); |
| |
| ((aac_mediaInfo*)aacA)->setLang(memFrag); |
| } |
| if (!oscl_strncmp(line_start_ptr, "a=fmtp:", oscl_strlen("a=fmtp:"))) |
| { |
| const char *tmp_start_line, *tmp_end_line; |
| tmp_start_line = line_start_ptr + oscl_strlen("a=fmtp:"); |
| tmp_start_line = skip_whitespace(tmp_start_line, line_end_ptr); |
| if (tmp_start_line >= line_end_ptr) |
| { |
| break; |
| } |
| tmp_end_line = skip_to_whitespace(tmp_start_line, line_end_ptr); |
| if (tmp_end_line < tmp_start_line) |
| { |
| break; |
| } |
| uint32 payloadNumber; |
| if (PV_atoi(tmp_start_line, 'd', (tmp_end_line - tmp_start_line), payloadNumber) == false) |
| { |
| PVMF_SDP_PARSER_LOGERROR((0, "SDPAACMediaInfoParser::parseMediaInfo - a=fmtp field format is incorrect")); |
| return SDP_BAD_MEDIA_FMTP; |
| } |
| else |
| { |
| int p; |
| if (!aacA->lookupPayloadNumber(payloadNumber, p)) |
| { |
| fmtp_cnt--; |
| break; |
| } |
| } |
| // payloadNumber is present in the mediaInfo. get the payload |
| // Specific pointer corresponding to this payload |
| AacPayloadSpecificInfoType* payloadPtr = |
| (AacPayloadSpecificInfoType*)aacA->getPayloadSpecificInfoTypePtr(payloadNumber); |
| |
| PVMF_SDP_PARSER_LOGINFO((0, "SDPAacMediaInfoParser::parseMediaInfo - processing payload number : %d", payloadNumber)); |
| |
| tmp_start_line = tmp_end_line + 1; |
| tmp_start_line = skip_whitespace(tmp_start_line, line_end_ptr); |
| if (tmp_start_line >= line_end_ptr) |
| { |
| break; |
| } |
| int ii = 0; |
| const char *temp = tmp_start_line; |
| for (ii = 0; ii < (line_end_ptr - tmp_start_line) ; ii++) |
| { |
| if ((tmp_start_line[ii] == ';') || (ii == (line_end_ptr - tmp_start_line - 1))) |
| { |
| tmp_end_line = tmp_start_line + ii; |
| if (ii == (line_end_ptr - tmp_start_line - 1)) |
| { |
| tmp_end_line += 1; |
| } |
| |
| if (!oscl_strncmp(temp, "config=", oscl_strlen("config="))) |
| { |
| |
| uint8 *mptr = SDP_alloc.allocate(decLength); |
| OsclRefCounterSA< SDPAllocDestructDealloc<uint8> > *refcnt = new OsclRefCounterSA< SDPAllocDestructDealloc<uint8> >(mptr); |
| OsclSharedPtr<uint8> decInfo(mptr, refcnt); |
| |
| temp += oscl_strlen("config="); |
| temp = skip_whitespace(temp, line_end_ptr); |
| if (temp >= line_end_ptr) |
| { |
| PVMF_SDP_PARSER_LOGERROR((0, "SDPAACMediaInfoParser::parseMediaInfo - a=fmtp field format is incorrect for config= field")); |
| return SDP_BAD_MEDIA_FMTP; |
| } |
| decLength = (int)(tmp_end_line - temp) / 2; |
| int idx = 0; |
| for (idx = 0; idx < decLength; idx++) |
| { |
| uint32 val; |
| if (PV_atoi((temp + 2*idx), 'x', 2, val) == false) |
| { |
| PVMF_SDP_PARSER_LOGERROR((0, "SDPAACMediaInfoParser::parseMediaInfo - a=fmtp field format is incorrect for config= field")); |
| return SDP_BAD_MEDIA_FMTP; |
| } |
| |
| *(decInfo + idx) = (uint8) val; |
| } |
| |
| if (payloadPtr) |
| { |
| payloadPtr->setDecoderSpecificInfo(decInfo); |
| payloadPtr->setDecoderSpecificInfoSize(decLength); |
| } |
| else |
| { |
| PVMF_SDP_PARSER_LOGERROR((0, "SDPAACMediaInfoParser::parseMediaInfo - a=fmtp field format is incorrect for payload")); |
| return SDP_PAYLOAD_MISMATCH; |
| } |
| } |
| |
| // add code for cpresent flag |
| if (!oscl_strncmp(temp, "cpresent=", oscl_strlen("cpresent="))) |
| { |
| temp += oscl_strlen("cpresent="); |
| temp = skip_whitespace(temp, line_end_ptr); |
| if (temp > line_end_ptr) |
| { |
| PVMF_SDP_PARSER_LOGERROR((0, "SDPAACMediaInfoParser::parseMediaInfo - a=fmtp format is incorrect for cpresent= field")); |
| return SDP_BAD_MEDIA_FMTP; |
| } |
| uint32 cpresent; //Assuming that the possible values are either 0 or 1 |
| if (PV_atoi(temp, 'd', tmp_end_line - temp, cpresent) == true) |
| { |
| if (payloadPtr) |
| payloadPtr->setcpresent(cpresent ? true : false); |
| else |
| return SDP_PAYLOAD_MISMATCH; |
| } |
| } |
| if (!oscl_strncmp(temp, "SBR-enabled=", oscl_strlen("SBR-enabled="))) |
| { |
| temp += oscl_strlen("SBR-enabled="); |
| temp = skip_whitespace(temp, line_end_ptr); |
| if (temp > line_end_ptr) |
| { |
| PVMF_SDP_PARSER_LOGERROR((0, "SDPAACMediaInfoParser::parseMediaInfo - a=fmtp format is incorrect for SBR-enabled= field")); |
| return SDP_BAD_MEDIA_FORMAT; |
| } |
| uint32 sbrEn; //Assuming that the possible values are either 0 or 1 |
| if (PV_atoi(temp, 'd', tmp_end_line - temp, sbrEn) == true) |
| { |
| if (payloadPtr) |
| payloadPtr->setAACplusSBRenabled(sbrEn ? true : false); |
| else |
| return SDP_PAYLOAD_MISMATCH; |
| } |
| } |
| |
| |
| if (!oscl_strncmp(temp, "decode_buf=", oscl_strlen("decode_buf="))) |
| { |
| temp += oscl_strlen("decode_buf="); |
| temp = skip_whitespace(temp, tmp_end_line); |
| if (temp > tmp_end_line) |
| { |
| PVMF_SDP_PARSER_LOGERROR((0, "SDPAACMediaInfoParser::parseMediaInfo - a=fmtp format is incorrect for decode_buf= field")); |
| return SDP_BAD_MEDIA_FORMAT; |
| } |
| uint32 dec; |
| if (PV_atoi(temp, 'd', tmp_end_line - temp, dec) == true) |
| { |
| if (payloadPtr) |
| payloadPtr->setMaxBufferSize(dec); |
| else |
| return SDP_PAYLOAD_MISMATCH; |
| } |
| } |
| |
| if (tmp_end_line != line_end_ptr) temp = tmp_end_line + 1; |
| temp = skip_whitespace(temp, line_end_ptr); |
| if (temp >= line_end_ptr) |
| { |
| PVMF_SDP_PARSER_LOGERROR((0, "SDPAACMediaInfoParser::parseMediaInfo - a=fmtp format is bad")); |
| return SDP_BAD_MEDIA_FORMAT; |
| } |
| } |
| } |
| } |
| } |
| break; |
| default: |
| break; |
| } |
| current_start = line_end_ptr; |
| } |
| |
| |
| sessionDescription *session = sdp->getSessionInfo(); |
| |
| const char *altGroupBW = session->getAltGroupBW(); |
| int length = session->getAltGroupBWLength(); |
| |
| if (length > 0) |
| { |
| status = setDependentMediaId(altGroupBW, length, aacA, alt_id); |
| if (status != SDP_SUCCESS) |
| return SDP_BAD_MEDIA_ALT_ID; |
| } |
| |
| const char *altGroupLANG = session->getAltGroupLANG(); |
| length = session->getAltGroupLANGLength(); |
| |
| if (length > 0) |
| { |
| status = setDependentMediaId(altGroupLANG, length, aacA, alt_id); |
| if (status != SDP_SUCCESS) |
| return SDP_BAD_MEDIA_ALT_ID; |
| } |
| |
| if (aacA->getCFieldStatus() || session->getCFieldStatus()) |
| { |
| //if sample rate is zero override with defaults |
| Oscl_Vector<PayloadSpecificInfoTypeBase*, SDPParserAlloc> payloadSpecificInfoVector = |
| aacA->getPayloadSpecificInfoVector(); |
| for (int ii = 0; ii < (int)payloadSpecificInfoVector.size();ii++) |
| { |
| if (payloadSpecificInfoVector[ii]->getSampleRate() == 0) |
| { |
| payloadSpecificInfoVector[ii]->sampleRate = |
| PVMF_SDP_DEFAULT_LATM_SAMPLE_RATE; |
| } |
| } |
| return SDP_SUCCESS; |
| } |
| else |
| { |
| return SDP_FAILURE_NO_C_FIELD; |
| } |
| } |
| } |
| |
