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https://github.com/tuxbox-neutrino/libstb-hal.git
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lib cleanup and sync for mips vu support
This commit is contained in:
383
libeplayer3/output/writer/sh4/aac.c
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383
libeplayer3/output/writer/sh4/aac.c
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/*
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* linuxdvb output/writer handling.
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*
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* konfetti 2010 based on linuxdvb.c code from libeplayer2
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*
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*/
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/* ***************************** */
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/* Includes */
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/* ***************************** */
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#include <stdio.h>
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#include <string.h>
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#include <stdlib.h>
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#include <unistd.h>
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#include <fcntl.h>
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#include <sys/types.h>
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#include <sys/stat.h>
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#include <sys/ioctl.h>
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#include <linux/dvb/video.h>
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#include <linux/dvb/audio.h>
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#include <memory.h>
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#include <asm/types.h>
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#include <pthread.h>
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#include <errno.h>
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#include <sys/uio.h>
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#include <libavutil/intreadwrite.h>
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#include "ffmpeg/latmenc.h"
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#include "stm_ioctls.h"
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#include "common.h"
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#include "output.h"
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#include "debug.h"
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#include "misc.h"
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#include "pes.h"
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#include "writer.h"
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#include "aac.h"
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/* ***************************** */
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/* Makros/Constants */
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/* ***************************** */
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/* ***************************** */
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/* Types */
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/* ***************************** */
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/* ***************************** */
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/* Variables */
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/* ***************************** */
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/// ** AAC ADTS format **
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///
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/// AAAAAAAA AAAABCCD EEFFFFGH HHIJKLMM
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/// MMMMMMMM MMMNNNNN NNNNNNOO ........
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///
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/// Sign Length Position Description
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///
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/// A 12 (31-20) Sync code
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/// B 1 (19) ID
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/// C 2 (18-17) layer
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/// D 1 (16) protect absent
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/// E 2 (15-14) profile
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/// F 4 (13-10) sample freq index
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/// G 1 (9) private
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/// H 3 (8-6) channel config
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/// I 1 (5) original/copy
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/// J 1 (4) home
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/// K 1 (3) copyright id
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/// L 1 (2) copyright start
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/// M 13 (1-0,31-21) frame length
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/// N 11 (20-10) adts buffer fullness
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/// O 2 (9-8) num of raw data blocks in frame
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/*
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LC: Audio: aac, 44100 Hz, stereo, s16, 192 kb/ ->ff f1 50 80 00 1f fc
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HE: Audio: aac, 48000 Hz, stereo, s16, 77 kb/s ->ff f1 4c 80 00 1f fc
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*/
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/*
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ADIF = basic format called Audio Data Interchange Format (ADIF)
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consisting of a single header followed by the raw AAC audio data blocks
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ADTS = streaming format called Audio Data Transport Stream (ADTS)
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consisting of a series of frames, each frame having a header followed by the AAC audio data
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LOAS = Low Overhead Audio Stream (LOAS), a self-synchronizing streaming format
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*/
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static unsigned char DefaultAACHeader[] =
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{
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0xff,
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0xf1,
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/*0x00, 0x00*/0x50, //((Profile & 0x03) << 6) | (SampleIndex << 2) | ((Channels >> 2) & 0x01);s
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0x80, //(Channels & 0x03) << 6;
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0x00,
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0x1f,
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0xfc
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};
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LATMContext *pLATMCtx = NULL;
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/* ***************************** */
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/* Prototypes */
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/* ***************************** */
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/* ***************************** */
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/* MISC Functions */
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/* ***************************** */
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static int reset()
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{
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if (pLATMCtx)
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{
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free(pLATMCtx);
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pLATMCtx = NULL;
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}
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return 0;
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}
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static int _writeData(void *_call, int type)
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{
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WriterAVCallData_t *call = (WriterAVCallData_t *) _call;
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aac_printf(10, "\n _writeData type[%d]\n", type);
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if (call == NULL)
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{
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aac_err("call data is NULL...\n");
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return 0;
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}
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if ((call->data == NULL) || (call->len < 8))
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{
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aac_err("parsing Data with missing AAC header. ignoring...\n");
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return 0;
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}
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/* simple validation */
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if (0 == type) // check ADTS header
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{
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if (0xFF != call->data[0] || 0xF0 != (0xF0 & call->data[1]))
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{
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aac_err("parsing Data with missing syncword. ignoring...\n");
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return 0;
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}
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// STB can handle only AAC LC profile
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if (0 == (call->data[2] & 0xC0))
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{
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// change profile AAC Main -> AAC LC (Low Complexity)
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aac_printf(1, "change profile AAC Main -> AAC LC (Low Complexity) in the ADTS header");
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call->data[2] = (call->data[2] & 0x1F) | 0x40;
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}
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}
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else // check LOAS header
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{
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if (!(call->len > 2 && call->data[0] == 0x56 && (call->data[1] >> 4) == 0xe &&
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(AV_RB16(call->data + 1) & 0x1FFF) + 3 == call->len))
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{
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aac_err("parsing Data with wrong latm header. ignoring...\n");
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return 0;
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}
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}
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unsigned char PesHeader[PES_MAX_HEADER_SIZE];
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aac_printf(10, "AudioPts %lld\n", call->Pts);
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unsigned int HeaderLength = InsertPesHeader(PesHeader, call->len, MPEG_AUDIO_PES_START_CODE, call->Pts, 0);
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struct iovec iov[2];
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iov[0].iov_base = PesHeader;
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iov[0].iov_len = HeaderLength;
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iov[1].iov_base = call->data;
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iov[1].iov_len = call->len;
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return call->WriteV(call->fd, iov, 2);
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}
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static int writeDataADTS(void *_call)
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{
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WriterAVCallData_t *call = (WriterAVCallData_t *) _call;
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aac_printf(10, "\n");
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if (call == NULL)
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{
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aac_err("call data is NULL...\n");
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return 0;
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}
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if ((call->data == NULL) || (call->len <= 0))
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{
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aac_err("parsing NULL Data. ignoring...\n");
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return 0;
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}
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if (call->fd < 0)
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{
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aac_err("file pointer < 0. ignoring ...\n");
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return 0;
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}
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if ((call->private_data && 0 == strncmp("ADTS", call->private_data, call->private_size)) ||
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HasADTSHeader(call->data, call->len))
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{
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return _writeData(_call, 0);
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}
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uint32_t PacketLength = call->len + AAC_HEADER_LENGTH;
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uint8_t PesHeader[PES_MAX_HEADER_SIZE + AAC_HEADER_LENGTH];
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uint32_t headerSize = InsertPesHeader(PesHeader, PacketLength, MPEG_AUDIO_PES_START_CODE, call->Pts, 0);
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uint8_t *pExtraData = &PesHeader[headerSize];
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aac_printf(10, "AudioPts %lld\n", call->Pts);
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if (call->private_data == NULL)
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{
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aac_printf(10, "private_data = NULL\n");
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memcpy(pExtraData, DefaultAACHeader, AAC_HEADER_LENGTH);
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}
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else
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{
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memcpy(pExtraData, call->private_data, AAC_HEADER_LENGTH);
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}
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pExtraData[3] &= 0xC0;
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/* frame size over last 2 bits */
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pExtraData[3] |= (PacketLength & 0x1800) >> 11;
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/* frame size continued over full byte */
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pExtraData[4] = (PacketLength & 0x1FF8) >> 3;
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/* frame size continued first 3 bits */
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pExtraData[5] = (PacketLength & 7) << 5;
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/* buffer fullness(0x7FF for VBR) over 5 last bits */
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pExtraData[5] |= 0x1F;
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/* buffer fullness(0x7FF for VBR) continued over 6 first bits + 2 zeros for
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* number of raw data blocks */
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pExtraData[6] = 0xFC;
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struct iovec iov[2];
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iov[0].iov_base = PesHeader;
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iov[0].iov_len = headerSize + AAC_HEADER_LENGTH;
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iov[1].iov_base = call->data;
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iov[1].iov_len = call->len;
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return call->WriteV(call->fd, iov, 2);
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}
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static int writeDataLATM(void *_call)
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{
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WriterAVCallData_t *call = (WriterAVCallData_t *) _call;
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aac_printf(10, "\n");
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if (call == NULL)
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{
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aac_err("call data is NULL...\n");
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return 0;
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}
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if ((call->data == NULL) || (call->len <= 0))
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{
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aac_err("parsing NULL Data. ignoring...\n");
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return 0;
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}
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if (call->private_data && 0 == strncmp("LATM", call->private_data, call->private_size))
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{
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return _writeData(_call, 1);
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}
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aac_printf(10, "AudioPts %lld\n", call->Pts);
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if (!pLATMCtx)
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{
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pLATMCtx = malloc(sizeof(LATMContext));
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memset(pLATMCtx, 0x00, sizeof(LATMContext));
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pLATMCtx->mod = 14;
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pLATMCtx->counter = 0;
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}
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if (!pLATMCtx)
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{
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aac_err("parsing NULL pLATMCtx. ignoring...\n");
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return 0;
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}
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unsigned char PesHeader[PES_MAX_HEADER_SIZE];
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int ret = latmenc_decode_extradata(pLATMCtx, call->private_data, call->private_size);
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if (ret)
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{
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//printf("%02x %02x %02x %02x %02x %02x %02x %02x\n", (int)call->data[0], (int)call->data[1], (int)call->data[2], (int)call->data[3], \
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// (int)call->data[4], (int)call->data[5], (int)call->data[6], (int)call->data[7]);
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aac_err("latm_decode_extradata failed. ignoring...\n");
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return 0;
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}
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ret = latmenc_write_packet(pLATMCtx, call->data, call->len, call->private_data, call->private_size);
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if (ret)
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{
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aac_err("latm_write_packet failed. ignoring...\n");
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return 0;
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}
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unsigned int HeaderLength = InsertPesHeader(PesHeader, pLATMCtx->len + 3, MPEG_AUDIO_PES_START_CODE, call->Pts, 0);
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struct iovec iov[3];
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iov[0].iov_base = PesHeader;
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iov[0].iov_len = HeaderLength;
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iov[1].iov_base = pLATMCtx->loas_header;
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iov[1].iov_len = 3;
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iov[2].iov_base = pLATMCtx->buffer;
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iov[2].iov_len = pLATMCtx->len;
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return call->WriteV(call->fd, iov, 3);
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}
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/* ***************************** */
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/* Writer Definition */
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/* ***************************** */
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static WriterCaps_t caps =
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{
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"aac",
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eAudio,
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"A_AAC",
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AUDIO_ENCODING_AAC,
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-1,
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-1
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};
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struct Writer_s WriterAudioAAC =
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{
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&reset,
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&writeDataADTS,
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&caps
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};
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static WriterCaps_t caps_aac_latm =
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{
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"aac",
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eAudio,
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"A_AAC_LATM",
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AUDIO_ENCODING_AAC,
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-1, // it is some misunderstanding, this should be AUDIOTYPE_AAC_LATM
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-1
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};
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struct Writer_s WriterAudioAACLATM =
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{
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&reset,
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&writeDataLATM,
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&caps_aac_latm
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};
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static WriterCaps_t caps_aacplus =
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{
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"aac",
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eAudio,
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"A_AAC_PLUS",
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AUDIO_ENCODING_AAC,
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-1,
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-1
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};
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struct Writer_s WriterAudioAACPLUS =
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{
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&reset,
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&writeDataADTS,
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&caps_aacplus
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};
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