hvirtual/quicktime/mdia.c

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#include "funcprotos.h"
#include "quicktime.h"


void quicktime_mdia_init(quicktime_mdia_t *mdia)
{
        quicktime_mdhd_init(&(mdia->mdhd));
        quicktime_hdlr_init(&(mdia->hdlr));
        quicktime_minf_init(&(mdia->minf));
}

void quicktime_mdia_init_video(quicktime_t *file, 
                                                                quicktime_mdia_t *mdia,
                                                                int frame_w,
                                                                int frame_h, 
                                                                float frame_rate,
                                                                char *compressor)
{
//printf("quicktime_mdia_init_video 1\n");
        quicktime_mdhd_init_video(file, &(mdia->mdhd), frame_w, frame_h, frame_rate);
//printf("quicktime_mdia_init_video 1 %d %f\n", mdia->mdhd.time_scale, frame_rate);
        quicktime_minf_init_video(file, &(mdia->minf), frame_w, frame_h, mdia->mdhd.time_scale, frame_rate, compressor);
//printf("quicktime_mdia_init_video 1\n");
        quicktime_hdlr_init_video(&(mdia->hdlr));
//printf("quicktime_mdia_init_video 2\n");
}

void quicktime_mdia_init_audio(quicktime_t *file, 
                                                        quicktime_mdia_t *mdia, 
                                                        int channels,
                                                        int sample_rate, 
                                                        int bits, 
                                                        char *compressor)
{
        quicktime_mdhd_init_audio(&(mdia->mdhd), 
                sample_rate);
        quicktime_minf_init_audio(file, 
                &(mdia->minf), 
                channels, 
                sample_rate, 
                bits, 
                compressor);
        quicktime_hdlr_init_audio(&(mdia->hdlr));
}

void quicktime_mdia_delete(quicktime_mdia_t *mdia)
{
        quicktime_mdhd_delete(&(mdia->mdhd));
        quicktime_hdlr_delete(&(mdia->hdlr));
        quicktime_minf_delete(&(mdia->minf));
}

void quicktime_mdia_dump(quicktime_mdia_t *mdia)
{
        printf("  media\n");
        quicktime_mdhd_dump(&(mdia->mdhd));
        quicktime_hdlr_dump(&(mdia->hdlr));
        quicktime_minf_dump(&(mdia->minf));
}

int quicktime_read_mdia(quicktime_t *file, quicktime_mdia_t *mdia, quicktime_atom_t *trak_atom)
{
        quicktime_atom_t leaf_atom;

        do
        {
                quicktime_atom_read_header(file, &leaf_atom);
//printf("quicktime_read_mdia %llx\n", quicktime_position(file));

/* mandatory */
                if(quicktime_atom_is(&leaf_atom, "mdhd"))
                        { quicktime_read_mdhd(file, &(mdia->mdhd)); }
                else
                if(quicktime_atom_is(&leaf_atom, "hdlr"))
                {
                        quicktime_read_hdlr(file, &(mdia->hdlr)); 
/* Main Actor doesn't write component name */
                        quicktime_atom_skip(file, &leaf_atom);
                }
                else
                if(quicktime_atom_is(&leaf_atom, "minf"))
                        { quicktime_read_minf(file, &(mdia->minf), &leaf_atom); }
                else
                        quicktime_atom_skip(file, &leaf_atom);
        }while(quicktime_position(file) < trak_atom->end);

        return 0;
}

void quicktime_write_mdia(quicktime_t *file, quicktime_mdia_t *mdia)
{
        quicktime_atom_t atom;
        quicktime_atom_write_header(file, &atom, "mdia");

        quicktime_write_mdhd(file, &(mdia->mdhd));
        quicktime_write_hdlr(file, &(mdia->hdlr));
        quicktime_write_minf(file, &(mdia->minf));

        quicktime_atom_write_footer(file, &atom);
}

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