root/modules/laser_dec/laser_dec.c

DEFINITIONS

1. LSR_GetCapabilities
2. LSR_SetCapabilities
3. LSR_AttachScene
4. LSR_ReleaseScene
5. LSR_AttachStream
6. LSR_DetachStream
7. LSR_ProcessData
8. LSR_CanHandleStream
9. DeleteLSRDec
10. NewLSRDec
11. QueryInterfaces
12. LoadInterface
13. ShutdownInterface

/*
 *                      GPAC - Multimedia Framework C SDK
 *
 *                      Authors: Jean Le Feuvre
 *                      Copyright (c) Telecom ParisTech 2005-2012
 *                                      All rights reserved
 *
 *  This file is part of GPAC / LASeR decoder module
 *
 *  GPAC is free software; you can redistribute it and/or modify
 *  it under the terms of the GNU Lesser General Public License as published by
 *  the Free Software Foundation; either version 2, or (at your option)
 *  any later version.
 *
 *  GPAC 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 Lesser General Public License for more details.
 *
 *  You should have received a copy of the GNU Lesser General Public
 *  License along with this library; see the file COPYING.  If not, write to
 *  the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
 *
 */

#include <gpac/internal/terminal_dev.h>
#include <gpac/laser.h>
#include <gpac/constants.h>

#ifndef GPAC_DISABLE_LASER

typedef struct
{
        GF_Scene *pScene;
        GF_Terminal *app;
        GF_LASeRCodec *codec;
        u32 PL, nb_streams;
} LSRPriv;



static GF_Err LSR_GetCapabilities(GF_BaseDecoder *plug, GF_CodecCapability *cap)
{
        cap->cap.valueInt = 0;
        return GF_NOT_SUPPORTED;
}

static GF_Err LSR_SetCapabilities(GF_BaseDecoder *plug, const GF_CodecCapability capability)
{
        return GF_OK;
}

GF_Err LSR_AttachScene(GF_SceneDecoder *plug, GF_Scene *scene, Bool is_scene_decoder)
{
        LSRPriv *priv = (LSRPriv *)plug->privateStack;
        if (priv->codec) return GF_BAD_PARAM;
        priv->pScene = scene;
        priv->app = scene->root_od->term;

        priv->codec = gf_laser_decoder_new(scene->graph);
        /*attach the clock*/
        gf_laser_decoder_set_clock(priv->codec, gf_scene_get_time, scene);
        return GF_OK;
}

GF_Err LSR_ReleaseScene(GF_SceneDecoder *plug)
{
        LSRPriv *priv = (LSRPriv *)plug->privateStack;
        if (!priv->codec || priv->nb_streams) return GF_BAD_PARAM;
        gf_laser_decoder_del(priv->codec);
        priv->codec = NULL;
        return GF_OK;
}

static GF_Err LSR_AttachStream(GF_BaseDecoder *plug, GF_ESD *esd)
{
        LSRPriv *priv = (LSRPriv *)plug->privateStack;
        GF_Err e;
        if (esd->decoderConfig->upstream) return GF_NOT_SUPPORTED;
        e = gf_laser_decoder_configure_stream(priv->codec, esd->ESID, esd->decoderConfig->decoderSpecificInfo->data, esd->decoderConfig->decoderSpecificInfo->dataLength);
        if (!e) priv->nb_streams++;
        return e;
}

static GF_Err LSR_DetachStream(GF_BaseDecoder *plug, u16 ES_ID)
{
        GF_Err e;
        LSRPriv *priv = (LSRPriv *)plug->privateStack;
        e = gf_laser_decoder_remove_stream(priv->codec, ES_ID);
        if (e) return e;
        priv->nb_streams--;
        return GF_OK;
}

static GF_Err LSR_ProcessData(GF_SceneDecoder*plug, const char *inBuffer, u32 inBufferLength,
                              u16 ES_ID, u32 AU_time, u32 mmlevel)
{
        GF_Err e = GF_OK;
        LSRPriv *priv = (LSRPriv *)plug->privateStack;

        e = gf_laser_decode_au(priv->codec, ES_ID, inBuffer, inBufferLength);

        /*if scene not attached do it*/
        gf_scene_attach_to_compositor(priv->pScene);
        return e;
}

static u32 LSR_CanHandleStream(GF_BaseDecoder *ifce, u32 StreamType, GF_ESD *esd, u8 PL)
{
        if (StreamType!=GF_STREAM_SCENE) return GF_CODEC_NOT_SUPPORTED;
        /*media type query*/
        if (!esd) return GF_CODEC_STREAM_TYPE_SUPPORTED;
        if (esd->decoderConfig->objectTypeIndication == GPAC_OTI_SCENE_LASER) return GF_CODEC_SUPPORTED;
        return GF_CODEC_NOT_SUPPORTED;
}


void DeleteLSRDec(GF_BaseDecoder *plug)
{
        LSRPriv *priv;
        if (!plug)
                return;
        priv = (LSRPriv *)plug->privateStack;
        if (priv) {
                /*in case something went wrong*/
                if (priv->codec)
                        gf_laser_decoder_del(priv->codec);
                priv->codec = NULL;
                gf_free(priv);
                plug->privateStack = NULL;
        }
        gf_free(plug);
}

GF_BaseDecoder *NewLSRDec()
{
        LSRPriv *priv;
        GF_SceneDecoder *tmp;

        GF_SAFEALLOC(tmp, GF_SceneDecoder);
        if (!tmp) return NULL;
        GF_SAFEALLOC(priv, LSRPriv);
        if (!priv) {
                gf_free(tmp);
                return NULL;
        }
        priv->codec = NULL;
        tmp->privateStack = priv;
        tmp->AttachStream = LSR_AttachStream;
        tmp->DetachStream = LSR_DetachStream;
        tmp->GetCapabilities = LSR_GetCapabilities;
        tmp->SetCapabilities = LSR_SetCapabilities;
        tmp->ProcessData = LSR_ProcessData;
        tmp->AttachScene = LSR_AttachScene;
        tmp->CanHandleStream = LSR_CanHandleStream;
        tmp->ReleaseScene = LSR_ReleaseScene;
        GF_REGISTER_MODULE_INTERFACE(tmp, GF_SCENE_DECODER_INTERFACE, "GPAC LASeR Decoder", "gpac distribution")
        return (GF_BaseDecoder *) tmp;
}

#endif


GPAC_MODULE_EXPORT
const u32 *QueryInterfaces()
{
        static u32 si [] = {
#ifndef GPAC_DISABLE_LASER
                GF_SCENE_DECODER_INTERFACE,
#endif
                0
        };
        return si;
}

GPAC_MODULE_EXPORT
GF_BaseInterface *LoadInterface(u32 InterfaceType)
{
        switch (InterfaceType) {
#ifndef GPAC_DISABLE_LASER
        case GF_SCENE_DECODER_INTERFACE:
                return (GF_BaseInterface *)NewLSRDec();
#endif
        default:
                return NULL;
        }
}

GPAC_MODULE_EXPORT
void ShutdownInterface(GF_BaseInterface *ifce)
{
        switch (ifce->InterfaceType) {
#ifndef GPAC_DISABLE_LASER
        case GF_SCENE_DECODER_INTERFACE:
                DeleteLSRDec((GF_BaseDecoder *)ifce);
                break;
#endif
        }
}


GPAC_MODULE_STATIC_DECLARATION( laser )