filecr2.C

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#include "asset.h"
#include "colormodels.h"
#include "filecr2.h"
#include "mutex.h"
#include <string.h>
#include <unistd.h>

// Only allow one instance of the decoder to run simultaneously.
static Mutex cr2_mutex;


FileCR2::FileCR2(Asset *asset, File *file)
 : FileBase(asset, file)
{
        reset();
}

FileCR2::~FileCR2()
{
        close_file();
}


void FileCR2::reset()
{
}

int FileCR2::check_sig(Asset *asset)
{
        cr2_mutex.lock("FileCR2::check_sig");
        char string[BCTEXTLEN];
        int argc = 3;

        strcpy(string, asset->path);

        char *argv[4];
        argv[0] = "dcraw";
        argv[1] = "-i";
        argv[2] = string;
        argv[3] = 0;

        int result = dcraw_main(argc, argv);

        cr2_mutex.unlock();

        return !result;
}

int FileCR2::open_file(int rd, int wr)
{
        cr2_mutex.lock("FileCR2::check_sig");

        int argc = 3;
        char *argv[3] = 
        {
                "dcraw",
                "-i",
                asset->path
        };

        int result = dcraw_main(argc, argv);
        if(!result) format_to_asset();

        cr2_mutex.unlock();
        return result;
}


int FileCR2::close_file()
{
        return 0;
}

void FileCR2::format_to_asset()
{
        asset->video_data = 1;
        asset->layers = 1;
        sscanf(dcraw_info, "%d %d", &asset->width, &asset->height);
        if(!asset->frame_rate) asset->frame_rate = 1;
        asset->video_length = -1;
}


int FileCR2::read_frame(VFrame *frame)
{
        cr2_mutex.lock("FileCR2::check_sig");
        if(frame->get_color_model() == BC_RGBA_FLOAT)
                dcraw_alpha = 1;
        else
                dcraw_alpha = 0;


// output to stdout
        int argc = 3;
        char *argv[3] = 
        {
                "dcraw",
                "-c",
                asset->path
        };
        dcraw_data = (float**)frame->get_rows();

        int result = dcraw_main(argc, argv);

        cr2_mutex.unlock();
        return 0;
}

int FileCR2::colormodel_supported(int colormodel)
{
        if(colormodel == BC_RGB_FLOAT ||
                colormodel == BC_RGBA_FLOAT)
                return colormodel;
        return BC_RGB_FLOAT;
}

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