hvirtual/cinelerra/filecr2.C

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#include "asset.h"
#include "bchash.h"
#include "clip.h"
#include "colormodels.h"
#include "file.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("cr2_mutex");

extern "C"
{
extern char dcraw_info[1024];
extern float **dcraw_data;
extern int dcraw_alpha;
extern float dcraw_matrix[9];
int dcraw_main (int argc, char **argv);
}


FileCR2::FileCR2(Asset *asset, File *file)
 : FileBase(asset, file)
{
        reset();
        if(asset->format == FILE_UNKNOWN)
                asset->format = FILE_CR2;
}

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::read_frame");
        if(frame->get_color_model() == BC_RGBA_FLOAT)
                dcraw_alpha = 1;
        else
                dcraw_alpha = 0;

// Want to disable interpolation if an interpolation plugin is on, but
// this is impractical because of the amount of caching.  The interpolation
// could not respond to a change in the plugin settings and it could not
// reload the frame after the plugin was added.  Also, since an 8 bit
// PBuffer would be required, it could never have enough resolution.
//      int interpolate = 0;
//      if(!strcmp(frame->get_next_effect(), "Interpolate Pixels"))
//              interpolate = 0;


// printf("FileCR2::read_frame %d\n", interpolate);
// frame->dump_stacks();
// output to stdout
        int argc = 0;
        char *argv[] = { 0, 0, 0, 0, 0, 0, 0, 0, 0 };
        argv[argc++] = "dcraw";
// write to stdout
        argv[argc++] = "-c";
// Use camera white balance.  
// Before 2006, DCraw had no Canon white balance.
// In 2006 DCraw seems to support Canon white balance.
// Still no gamma support.
// Need to toggle this in preferences because it defeats dark frame subtraction.
        if(file->white_balance_raw)
                argv[argc++] = "-w";
        if(!file->interpolate_raw)
        {
// Trying to do everything but interpolate doesn't work because convert_to_rgb
// doesn't work with bayer patterns.
// Use document mode and hack dcraw to apply white balance in the write_ function.
                argv[argc++] = "-d";
        }

        argv[argc++] = asset->path;

        dcraw_data = (float**)frame->get_rows();

//Timer timer;
        int result = dcraw_main(argc, argv);

        char string[BCTEXTLEN];
        sprintf(string, 
                "%f %f %f %f %f %f %f %f %f\n",
                dcraw_matrix[0],
                dcraw_matrix[1],
                dcraw_matrix[2],
                dcraw_matrix[3],
                dcraw_matrix[4],
                dcraw_matrix[5],
                dcraw_matrix[6],
                dcraw_matrix[7],
                dcraw_matrix[8]);


        frame->get_params()->update("DCRAW_MATRIX", string);

// printf("FileCR2::read_frame\n");
// frame->dump_params();

        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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