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fa45cac121b9fe01207d290c69c17713b1d392b8
recycled-ni-libstb-hal/libeplayer3/output/writer/pcm.c
martii fa45cac121 libeplayer3: get rid of compiler warnings 
Origin commit data
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Branch: master
Commit: 9d4502b7fe
Author: martii <m4rtii@gmx.de>
Date: 2013-06-10 (Mon, 10 Jun 2013)


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2013-06-10 15:06:00 +02:00

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/*
* linuxdvb output/writer handling.
*
* konfetti 2010 based on linuxdvb.c code from libeplayer2
*
* This program 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 2 of the License, or
* (at your option) any later version.
*
* This program 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 this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*
*/
/* ***************************** */
/* Includes */
/* ***************************** */
#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#include <unistd.h>
#include <fcntl.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <sys/ioctl.h>
#include <linux/dvb/video.h>
#include <linux/dvb/audio.h>
#include <memory.h>
#include <asm/types.h>
#include <pthread.h>
#include <errno.h>
#include "common.h"
#include "output.h"
#include "debug.h"
#include "stm_ioctls.h"
#include "misc.h"
#include "pes.h"
#include "writer.h"
#include "pcm.h"
/* ***************************** */
/* Makros/Constants */
/* ***************************** */
#define PCM_DEBUG
#ifdef PCM_DEBUG
static short debug_level = 0;
#define pcm_printf(level, fmt, x...) do { \
if (debug_level >= level) printf("[%s:%s] " fmt, __FILE__, __FUNCTION__, ## x); } while (0)
#else
#define pcm_printf(level, fmt, x...)
#endif
#ifndef PCM_SILENT
#define pcm_err(fmt, x...) do { printf("[%s:%s] " fmt, __FILE__, __FUNCTION__, ## x); } while (0)
#else
#define pcm_err(fmt, x...)
#endif
/* ***************************** */
/* Types */
/* ***************************** */
/* ***************************** */
/* Varaibles */
/* ***************************** */
static int initialHeader = 1;
static unsigned int SubFrameLen = 0;
static unsigned int SubFramesPerPES = 0;
static const unsigned char clpcm_pes[18] = { 0x00, 0x00, 0x01, 0xBD, //start code
0x07, 0xF1, //pes length
0x81, 0x81, 0x09, //fixed
0x21, 0x00, 0x01, 0x00, 0x01, //PTS marker bits
0x1E, 0x60, 0x0A, //first pes only, 0xFF after
0xFF
};
// reference: search for TypeLpcmDVDAudio in player/frame_parser/frame_parser_audio_lpcm.cpp
static const unsigned char clpcm_prv[14] = { 0xA0, //sub_stream_id
0, 0, //resvd and UPC_EAN_ISRC stuff, unused
0x0A, //private header length
0, 9, //first_access_unit_pointer
0x00, //emph,rsvd,stereo,downmix
0x0F, //quantisation word length 1,2
0x0F, //audio sampling freqency 1,2
0, //resvd, multi channel type
0, //bit shift on channel GR2, assignment
0x80, //dynamic range control
0, 0 //resvd for copyright management
};
static unsigned char lpcm_pes[18];
static unsigned char lpcm_prv[14];
static unsigned char breakBuffer[8192];
static unsigned int breakBufferFillSize = 0;
/* ***************************** */
/* Prototypes */
/* ***************************** */
/* ***************************** */
/* MISC Functions */
/* ***************************** */
static int prepareClipPlay(int uNoOfChannels, int uSampleRate, int uBitsPerSample, int bLittleEndian __attribute__((unused)))
{
printf("rate: %d ch: %d bits: %d (%d bps)\n",
uSampleRate/*Format->dwSamplesPerSec*/,
uNoOfChannels/*Format->wChannels*/,
uBitsPerSample/*Format->wBitsPerSample*/,
(uBitsPerSample/*Format->wBitsPerSample*/ / 8)
);
SubFrameLen = 0;
SubFramesPerPES = 0;
breakBufferFillSize = 0;
memcpy(lpcm_pes, clpcm_pes, sizeof(lpcm_pes));
memcpy(lpcm_prv, clpcm_prv, sizeof(lpcm_prv));
//figure out size of subframe
//and set up sample rate
switch(uSampleRate) {
case 48000: SubFrameLen = 40;
break;
case 96000: lpcm_prv[8] |= 0x10;
SubFrameLen = 80;
break;
case 192000: lpcm_prv[8] |= 0x20;
SubFrameLen = 160;
break;
case 44100: lpcm_prv[8] |= 0x80;
SubFrameLen = 40;
break;
case 88200: lpcm_prv[8] |= 0x90;
SubFrameLen = 80;
break;
case 176400: lpcm_prv[8] |= 0xA0;
SubFrameLen = 160;
break;
default: break;
}
SubFrameLen *= uNoOfChannels;
SubFrameLen *= (uBitsPerSample / 8);
//rewrite PES size to have as many complete subframes per PES as we can
SubFramesPerPES = ((2048-sizeof(lpcm_pes))-sizeof(lpcm_prv))/SubFrameLen;
SubFrameLen *= SubFramesPerPES;
lpcm_pes[4] = ((SubFrameLen+(sizeof(lpcm_pes)-6)+sizeof(lpcm_prv))>>8) & 0xFF;
lpcm_pes[5] = (SubFrameLen+(sizeof(lpcm_pes)-6)+sizeof(lpcm_prv)) & 0xFF;
//set number of channels
lpcm_prv[10] = uNoOfChannels - 1;
switch(uBitsPerSample) {
case 16: break;
case 24: lpcm_prv[7] |= 0x20;
break;
default: printf("inappropriate bits per sample (%d) - must be 16 or 24\n",uBitsPerSample);
return 1;
}
return 0;
}
static int reset()
{
initialHeader = 1;
return 0;
}
static int writeData(void* _call)
{
WriterAVCallData_t* call = (WriterAVCallData_t*) _call;
pcm_printf(10, "\n");
if (call == NULL)
{
pcm_err("call data is NULL...\n");
return 0;
}
pcm_printf(10, "AudioPts %lld\n", call->Pts);
if ((call->data == NULL) || (call->len <= 0))
{
pcm_err("parsing NULL Data. ignoring...\n");
return 0;
}
if (call->fd < 0)
{
pcm_err("file pointer < 0. ignoring ...\n");
return 0;
}
pcmPrivateData_t* pcmPrivateData = (pcmPrivateData_t*)call->private_data;
if (initialHeader)
{
initialHeader = 0;
prepareClipPlay(pcmPrivateData->uNoOfChannels, pcmPrivateData->uSampleRate,
pcmPrivateData->uBitsPerSample, pcmPrivateData->bLittleEndian);
}
unsigned char * buffer = call->data;
unsigned int size = call->len;
//printf("PCM %d size SubFrameLen=%d\n", size, SubFrameLen);
unsigned int n;
unsigned int injectBufferSize = sizeof(lpcm_pes) + sizeof(lpcm_prv) + SubFrameLen;
unsigned char * injectBuffer = (unsigned char *)malloc(sizeof(unsigned char)*injectBufferSize);
unsigned char * injectBufferDataPointer = &injectBuffer[sizeof(lpcm_pes)+sizeof(lpcm_prv)];
unsigned int pos;
for(pos = 0; pos < size; )
{
//printf("PCM %s - Position=%d\n", __FUNCTION__, pos);
if((size - pos) < SubFrameLen)
{
breakBufferFillSize = size - pos;
memcpy(breakBuffer, &buffer[pos], sizeof(unsigned char) * breakBufferFillSize);
//printf("PCM %s - Unplayed=%d\n", __FUNCTION__, breakBufferFillSize);
break;
}
//get first PES's worth
if(breakBufferFillSize > 0)
{
memcpy(injectBufferDataPointer, breakBuffer, sizeof(unsigned char)*breakBufferFillSize);
memcpy(&injectBufferDataPointer[breakBufferFillSize], &buffer[pos], sizeof(unsigned char)*(SubFrameLen - breakBufferFillSize));
pos += (SubFrameLen - breakBufferFillSize);
breakBufferFillSize = 0;
} else
{
memcpy(injectBufferDataPointer, &buffer[pos], sizeof(unsigned char)*SubFrameLen);
pos += SubFrameLen;
}
//write the PES header
memcpy(injectBuffer, lpcm_pes, sizeof(lpcm_pes));
//write the private data area
memcpy(&injectBuffer[sizeof(lpcm_pes)], lpcm_prv, sizeof(lpcm_prv));
//write the PCM data
if(pcmPrivateData->uBitsPerSample == 16) {
for(n=0; n<SubFrameLen; n+=2) {
unsigned char tmp;
tmp=injectBufferDataPointer[n];
injectBufferDataPointer[n]=injectBufferDataPointer[n+1];
injectBufferDataPointer[n+1]=tmp;
}
} else {
//A1cA1bA1a-B1cB1bB1a-A2cA2bA2a-B2cB2bB2a to A1aA1bB1aB1b.A2aA2bB2aB2b-A1cB1cA2cB2c
for(n=0; n<SubFrameLen; n+=12) {
unsigned char tmp[12];
tmp[ 0]=injectBufferDataPointer[n+2];
tmp[ 1]=injectBufferDataPointer[n+1];
tmp[ 8]=injectBufferDataPointer[n+0];
tmp[ 2]=injectBufferDataPointer[n+5];
tmp[ 3]=injectBufferDataPointer[n+4];
tmp[ 9]=injectBufferDataPointer[n+3];
tmp[ 4]=injectBufferDataPointer[n+8];
tmp[ 5]=injectBufferDataPointer[n+7];
tmp[10]=injectBufferDataPointer[n+6];
tmp[ 7]=injectBufferDataPointer[n+11];
tmp[ 8]=injectBufferDataPointer[n+10];
tmp[11]=injectBufferDataPointer[n+9];
memcpy(&injectBufferDataPointer[n],tmp,12);
}
}
//increment err... subframe count?
lpcm_prv[1] = ((lpcm_prv[1]+SubFramesPerPES) & 0x1F);
//disable PES to save calculating correct values
lpcm_pes[7] = 0x01;
//kill off first A_PKT only fields in PES header
lpcm_pes[14] = 0xFF;
lpcm_pes[15] = 0xFF;
lpcm_pes[16] = 0xFF;
write(call->fd, injectBuffer, injectBufferSize);
//printf("PCM %d bytes injected\n", injectBufferSize);
//Hexdump(injectBuffer, 126);
}
free(injectBuffer);
return size;
}
/* ***************************** */
/* Writer Definition */
/* ***************************** */
static WriterCaps_t caps_pcm = {
"pcm",
eAudio,
"A_PCM",
AUDIO_ENCODING_LPCMA
};
struct Writer_s WriterAudioPCM = {
&reset,
&writeData,
NULL,
&caps_pcm
};
static WriterCaps_t caps_ipcm = {
"ipcm",
eAudio,
"A_IPCM",
AUDIO_ENCODING_LPCMA
};
struct Writer_s WriterAudioIPCM = {
&reset,
&writeData,
NULL,
&caps_ipcm
};
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