/*
 * linuxdvb output/writer handling.
 *
 * konfetti 2010
 *
 * 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 <stdlib.h>
#include <string.h>

#include "misc.h"
#include "writer.h"

/* ***************************** */
/* Makros/Constants              */
/* ***************************** */

#ifdef SAM_WITH_DEBUG
#define WRITER_DEBUG
#else
#define WRITER_SILENT
#endif

#ifdef WRITER_DEBUG

static short debug_level = 0;

#define writer_printf(level, x...) do { \
if (debug_level >= level) printf(x); } while (0)
#else
#define writer_printf(level, x...)
#endif

#ifndef WRITER_SILENT
#define writer_err(x...) do { printf(x); } while (0)
#else
#define writer_err(x...)
#endif

/* ***************************** */
/* Types                         */
/* ***************************** */

/* ***************************** */
/* Variables                     */
/* ***************************** */

static Writer_t *AvailableWriter[] =
{
	&WriterAudioIPCM,
	&WriterAudioPCM,
	&WriterAudioMP3,
	&WriterAudioMPEGL3,
	&WriterAudioAC3,
	&WriterAudioAAC,
	&WriterAudioDTS,
	&WriterAudioWMA,
	&WriterAudioVORBIS,

	&WriterVideoMPEG2,
	&WriterVideoMPEGH264,
	&WriterVideoH264,
	&WriterVideoDIVX,
	&WriterVideoFOURCC,
	&WriterVideoMSCOMP,
	&WriterVideoWMV,
	&WriterVideoH263,
	&WriterVideoFLV,
	&WriterVideoVC1,
	NULL
};

//    &WriterAudioFLAC,

/* ***************************** */
/* Prototypes                    */
/* ***************************** */

/* ***************************** */
/*  Functions                    */
/* ***************************** */
ssize_t WriteWithRetry(Context_t *context, int pipefd, int fd, void *pDVBMtx, const void *buf, int size)
{
	fd_set rfds;

	ssize_t ret;
	int retval = -1;
	struct timeval tv;

	while (size > 0 && 0 == PlaybackDieNow(0) && !context->playback->isSeeking)
	{
		if (context->playback->isPaused)
		{
			FD_ZERO(&rfds);
			FD_SET(pipefd, &rfds);

			tv.tv_sec = 0;
			tv.tv_usec = 500000; // 500ms

			retval = select(pipefd + 1, &rfds, NULL, NULL, &tv);
			if (retval < 0)
			{
				break;
			}

			if (retval == 0)
			{
				//printf("RETURN FROM SELECT DUE TO TIMEOUT TIMEOUT\n");
				continue;
			}

			if (FD_ISSET(pipefd, &rfds))
			{
				FlushPipe(pipefd);
				//printf("RETURN FROM SELECT DUE TO pipefd SET\n");
				continue;
			}
		}

		//printf(">> Before Write fd [%d]\n", fd);
		ret = write(fd, buf, size);
		//printf(">> After Write ret[%d] size[%d]\n", (int)ret, size);
		if (ret == size)
			ret = 0; // no error

		break;
	}
	return ret;
}

Writer_t *getWriter(char *encoding)
{
	int i;

	for (i = 0; AvailableWriter[i] != NULL; i++)
	{
		if (strcmp(AvailableWriter[i]->caps->textEncoding, encoding) == 0)
		{
			writer_printf(50, "%s: found writer \"%s\" for \"%s\"\n", __func__, AvailableWriter[i]->caps->name, encoding);
			return AvailableWriter[i];
		}
	}

	writer_printf(1, "%s: no writer found for \"%s\"\n", __func__, encoding);

	return NULL;
}

Writer_t *getDefaultVideoWriter()
{
	int i;

	for (i = 0; AvailableWriter[i] != NULL; i++)
	{
		if (strcmp(AvailableWriter[i]->caps->textEncoding, "V_MPEG2") == 0)
		{
			writer_printf(50, "%s: found writer \"%s\"\n", __func__, AvailableWriter[i]->caps->name);
			return AvailableWriter[i];
		}
	}

	writer_printf(1, "%s: no writer found\n", __func__);

	return NULL;
}

Writer_t *getDefaultAudioWriter()
{
	int i;

	for (i = 0; AvailableWriter[i] != NULL; i++)
	{
		if (strcmp(AvailableWriter[i]->caps->textEncoding, "A_MP3") == 0)
		{
			writer_printf(50, "%s: found writer \"%s\"\n", __func__, AvailableWriter[i]->caps->name);
			return AvailableWriter[i];
		}
	}

	writer_printf(1, "%s: no writer found\n", __func__);

	return NULL;
}