output.c

/*
 * Output handling.
 *
 *
 * 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 "debug.h"
#include "common.h"
#include "output.h"

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

/* Error Constants */
#define cERR_OUTPUT_NO_ERROR         0
#define cERR_OUTPUT_INTERNAL_ERROR   -1

static const char* FILENAME = "output.c";

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

/* ***************************** */
/* Varaibles                     */
/* ***************************** */

static Output_t * AvailableOutput[] = {
    &LinuxDvbOutput,
    &SubtitleOutput,
    NULL
};

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

/* ***************************** */
/* MISC Functions                */
/* ***************************** */

static void printOutputCapabilities() {
    int i, j;

    output_printf(10, "%s::%s\n", FILENAME, __FUNCTION__);
    output_printf(10, "Capabilities:\n");

    for (i = 0; AvailableOutput[i] != NULL; i++)
    {
        output_printf(10, "\t%s : ", AvailableOutput[i]->Name);
        for (j = 0; AvailableOutput[i]->Capabilities[j] != NULL; j++)
        {
            output_printf(10, "%s ", AvailableOutput[i]->Capabilities[j]);
        }
        output_printf(10, "\n");
    }
}

/* ***************************** */
/* Output Functions              */
/* ***************************** */

static void OutputAdd(Context_t  *context, char *port)
{
    int i, j;

    output_printf(10, "%s::%s\n", FILENAME, __FUNCTION__);

    for (i = 0; AvailableOutput[i] != NULL; i++)
    {
        for (j = 0; AvailableOutput[i]->Capabilities[j] != NULL; j++)
        {
            if (!strcmp(AvailableOutput[i]->Capabilities[j], port))
            {
                if (!strcmp("audio", port)) 
                {
                    context->output->audio = AvailableOutput[i];
                    return;
                }
                else if (!strcmp("video", port)) 
                {
                    context->output->video = AvailableOutput[i];
                    return;
                }
                else if (!strcmp("subtitle", port)) 
                {
                    context->output->subtitle = AvailableOutput[i];
                    return;
                }
            }
        }
    }
}

static void OutputDel(Context_t  *context, char * port)
{
    output_printf(10, "%s::%s\n", FILENAME, __FUNCTION__);

    if (!strcmp("audio", port))
    {
        context->output->audio = NULL;
    }
    else if (!strcmp("video", port))
    {
        context->output->video = NULL;
    }
    else if (!strcmp("subtitle", port))
    {
        context->output->subtitle = NULL;
    }
}

static int Command(void  *_context, OutputCmd_t command, void * argument)
{
    Context_t  *context = (Context_t*) _context;
    int ret = cERR_OUTPUT_NO_ERROR;

    output_printf(10, "%s::%s Command %d\n", FILENAME, __FUNCTION__, command);

    switch(command)
    {
    case OUTPUT_OPEN:
    {
        if (context && context->playback )
        {
            if (context->playback->isVideo)
            {
                ret |= context->output->video->Command(context, OUTPUT_OPEN, "video");
            }
            if (context->playback->isAudio)
            {
                ret |= context->output->audio->Command(context, OUTPUT_OPEN, "audio");
            }
            if (context->playback->isSubtitle)
            {
                ret |= context->output->subtitle->Command(context, OUTPUT_OPEN, "subtitle");
            }
        } 
        else
        {
            ret = cERR_OUTPUT_INTERNAL_ERROR;
        }
        break;
    }
    case OUTPUT_CLOSE:
    {
        if (context && context->playback)
        {
            if (context->playback->isVideo)
            {
                ret |= context->output->video->Command(context, OUTPUT_CLOSE, "video");
            }
            if (context->playback->isAudio)
            {
                ret |= context->output->audio->Command(context, OUTPUT_CLOSE, "audio");
            }
            if (context->playback->isSubtitle)
            {
                ret |= context->output->subtitle->Command(context, OUTPUT_CLOSE, "subtitle");
            }
        } 
        else
        {
            ret = cERR_OUTPUT_INTERNAL_ERROR;
        }
        break;
    }
    case OUTPUT_ADD:
    {
        OutputAdd(context, (char*) argument);
        break;
    }
    case OUTPUT_DEL:
    {
        OutputDel(context, (char*) argument);
        break;
    }
    case OUTPUT_CAPABILITIES:
    {
        printOutputCapabilities();
        break;
    }
    case OUTPUT_PLAY: 
    { // 4
        if (context && context->playback )
        {
            if (context->playback->isVideo)
            {
                ret = context->output->video->Command(context, OUTPUT_PLAY, "video");
            }
            // success or not executed, dunn care
            if (!ret) 
            {
                if (context->playback->isAudio)
                {
                    ret = context->output->audio->Command(context, OUTPUT_PLAY, "audio");
                }
            }
            if (!ret) 
            {
                if (context->playback->isSubtitle)
                {
                    ret = context->output->subtitle->Command(context, OUTPUT_PLAY, "subtitle");
                }
            }
        } 
        else
        {
            ret = cERR_OUTPUT_INTERNAL_ERROR;
        }
        break;
    }
    case OUTPUT_STOP: 
    {
        if (context && context->playback ) 
        {
            if (context->playback->isVideo)
            {
                ret |= context->output->video->Command(context, OUTPUT_STOP, "video");
            }
            if (context->playback->isAudio)
            {
                ret |= context->output->audio->Command(context, OUTPUT_STOP, "audio");
            }
            if (context->playback->isSubtitle)
            {
                ret |= context->output->subtitle->Command(context, OUTPUT_STOP, "subtitle");
            }
        } 
        else
        {
            ret = cERR_OUTPUT_INTERNAL_ERROR;
        }
        break;
    }
    case OUTPUT_FLUSH:
    {
        if (context && context->playback)
        {
            if (context->playback->isVideo)
            {
                ret |= context->output->video->Command(context, OUTPUT_FLUSH, "video");
            }
            if (context->playback->isAudio)
            {
                ret |= context->output->audio->Command(context, OUTPUT_FLUSH, "audio");
            }
            if (context->playback->isSubtitle)
            {
                ret |= context->output->subtitle->Command(context, OUTPUT_FLUSH, "subtitle");
            }
        } 
        else
        {
            ret = cERR_OUTPUT_INTERNAL_ERROR;
        }
        break;
    }
    case OUTPUT_PAUSE:
    {
        if (context && context->playback)
        {
            if (context->playback->isVideo)
            {
                ret |= context->output->video->Command(context, OUTPUT_PAUSE, "video");
            }
            if (context->playback->isAudio)
            {
                ret |= context->output->audio->Command(context, OUTPUT_PAUSE, "audio");
            }
            if (context->playback->isSubtitle)
            {
                ret |= context->output->subtitle->Command(context, OUTPUT_PAUSE, "subtitle");
            }
        }
        else
        {
            ret = cERR_OUTPUT_INTERNAL_ERROR;
        }
        break;
    }
    case OUTPUT_FASTFORWARD:
    {
        if (context && context->playback)
        {
            if (context->playback->isVideo)
            {
                ret |= context->output->video->Command(context, OUTPUT_FASTFORWARD, "video");
            }
            if (context->playback->isAudio)
            {
                ret |= context->output->audio->Command(context, OUTPUT_FASTFORWARD, "audio");
            }
        } 
        else
        {
            ret = cERR_OUTPUT_INTERNAL_ERROR;
        }
        break;
    }
    case OUTPUT_REVERSE:
    {
        if (context && context->playback)
        {
            if (context->playback->isVideo)
            {
                ret |= context->output->video->Command(context, OUTPUT_REVERSE, "video");
            }
            if (context->playback->isAudio)
            {
                ret |= context->output->audio->Command(context, OUTPUT_REVERSE, "audio");
            }
        } 
        else
        {
            ret = cERR_OUTPUT_INTERNAL_ERROR;
        }
        break;
    }
    case OUTPUT_CONTINUE:
    {
        if (context && context->playback)
        {
            if (context->playback->isVideo)
            {
                ret |= context->output->video->Command(context, OUTPUT_CONTINUE, "video");
            }
            if (context->playback->isAudio)
            {
                ret |= context->output->audio->Command(context, OUTPUT_CONTINUE, "audio");
            }
            if (context->playback->isSubtitle)
            {
                ret |= context->output->subtitle->Command(context, OUTPUT_CONTINUE, "subtitle");
            }
        } 
        else
        {
            ret = cERR_OUTPUT_INTERNAL_ERROR;
        }
        break;
    }
    case OUTPUT_AVSYNC:
    {
        if (context && context->playback )
        {
            if (context->playback->isVideo && context->playback->isAudio)
            {
                ret |= context->output->audio->Command(context, OUTPUT_AVSYNC, "audio");
            }
        } 
        else
        {
            ret = cERR_OUTPUT_INTERNAL_ERROR;
        }
        break;
    }
    case OUTPUT_CLEAR:
    {
        if (context && context->playback )
        {
            if (context->playback->isVideo && (argument == NULL || *(char *) argument == 'v'))
            {
                ret |= context->output->video->Command(context, OUTPUT_CLEAR, "video");
            }
            if (context->playback->isAudio && (argument == NULL || *(char *) argument == 'a'))
            {
                ret |= context->output->audio->Command(context, OUTPUT_CLEAR, "audio");
            }
            if (context->playback->isSubtitle && (argument == NULL || *(char *) argument == 's'))
            {
                ret |= context->output->subtitle->Command(context, OUTPUT_CLEAR, "subtitle");
            }
        } 
        else
        {
            ret = cERR_OUTPUT_INTERNAL_ERROR;
        }
        break;
    }
    case OUTPUT_PTS:
    {
        if (context && context->playback )
        {
            if (context->playback->isVideo)
            {
                return context->output->video->Command(context, OUTPUT_PTS, argument);
            }
            if (context->playback->isAudio)
            {
                return context->output->audio->Command(context, OUTPUT_PTS, argument);
            }
        } 
        else
        {
            ret = cERR_OUTPUT_INTERNAL_ERROR;
        }
        break;
    }
    case OUTPUT_SWITCH:
    {
        if (context && context->playback )
        {
            if (context->playback->isAudio)
            {
                return context->output->audio->Command(context, OUTPUT_SWITCH, "audio");
            }
            if (context->playback->isVideo)
            {
                return context->output->video->Command(context, OUTPUT_SWITCH, "video");
            }
            if (context->playback->isSubtitle)
            {
                return context->output->subtitle->Command(context, OUTPUT_SWITCH, "subtitle");
            }
        } 
        else
        {
            ret = cERR_OUTPUT_INTERNAL_ERROR;
        }
        break;
    }
    case OUTPUT_SLOWMOTION:
    {
        if (context && context->playback )
        {
            if (context->playback->isVideo)
            {
                ret |= context->output->video->Command(context, OUTPUT_SLOWMOTION, "video");
            }
            if (context->playback->isAudio)
            {
                ret |= context->output->audio->Command(context, OUTPUT_SLOWMOTION, "audio");
            }
        } 
        else
        {
            ret = cERR_OUTPUT_INTERNAL_ERROR;
        }
        break;
    }
    case OUTPUT_AUDIOMUTE:
    {
        if (context && context->playback)
        {
            if (context->playback->isAudio)
            {
                ret |= context->output->audio->Command(context, OUTPUT_AUDIOMUTE, (char*) argument);
            }
        }
        else
        {
            ret = cERR_OUTPUT_INTERNAL_ERROR;
        }
        break;
    }
    case OUTPUT_DISCONTINUITY_REVERSE:
    {
        if (context && context->playback)
        {
            if (context->playback->isVideo)
            {
                ret |= context->output->video->Command(context, OUTPUT_DISCONTINUITY_REVERSE, (void*) argument);
            }
        }
        else
        {
            ret = cERR_OUTPUT_INTERNAL_ERROR;
        }
        break;
    }
    case OUTPUT_GET_FRAME_COUNT:
    {
        if (context && context->playback)
        {
            if (context->playback->isVideo)
            {
                return context->output->video->Command(context, OUTPUT_GET_FRAME_COUNT, argument);
            }
            if (context->playback->isAudio)
            {
                return context->output->audio->Command(context, OUTPUT_GET_FRAME_COUNT, argument);
            }
        }
        else
        {
            ret = cERR_OUTPUT_INTERNAL_ERROR;
        }
        break;
    }
    case OUTPUT_GET_PROGRESSIVE:
    {
        if (context && context->playback)
        {
            if (context->playback->isVideo)
            {
                return context->output->video->Command(context, OUTPUT_GET_PROGRESSIVE, (void*) argument);
            }
        }
        else
        {
            ret = cERR_OUTPUT_INTERNAL_ERROR;
        }
        break;
    }
    case OUTPUT_SET_BUFFER_SIZE:
    {
        if (context && context->playback)
        {
            if (context->output->video)
            {
                return context->output->video->Command(context, OUTPUT_SET_BUFFER_SIZE, argument);
            }
            else if (context->output->audio)
            {
                return context->output->audio->Command(context, OUTPUT_SET_BUFFER_SIZE, argument);
            }
        }
        else
        {
            ret = cERR_OUTPUT_INTERNAL_ERROR;
        }
        break;
    }
    case OUTPUT_GET_BUFFER_SIZE:
    {
        if (context && context->playback)
        {
            if (context->output->video)
            {
                return context->output->video->Command(context, OUTPUT_GET_BUFFER_SIZE, argument);
            }
            else if (context->output->audio)
            {
                return context->output->audio->Command(context, OUTPUT_GET_BUFFER_SIZE, argument);
            }
        }
        else
        {
            ret = cERR_OUTPUT_INTERNAL_ERROR;
        }
        break;
    }
    default:
        output_err("%s::%s OutputCmd %d not supported!\n", FILENAME, __FUNCTION__, command);
        ret = cERR_OUTPUT_INTERNAL_ERROR;
        break;
    }

    output_printf(10, "%s::%s exiting with value %d\n", FILENAME, __FUNCTION__, ret);

    return ret;
}

OutputHandler_t OutputHandler = {
    "Output",
    NULL, //audio
    NULL, //video
    NULL, //subtitle
    &Command
};