mpv/libmpcodecs/ve_raw.c

#include <stdio.h>
#include <stdlib.h>
#include <string.h>

#include "config.h"
#include "mp_msg.h"

#include "codec-cfg.h"
#include "stream.h"
#include "demuxer.h"
#include "stheader.h"

#include "muxer.h"

#include "img_format.h"
#include "mp_image.h"
#include "vf.h"


//===========================================================================//

struct vf_priv_s {
    muxer_stream_t* mux;
};
#define mux_v (vf->priv->mux)

static int set_format(struct vf_instance_s *vf, unsigned int fmt) {
    mux_v->bih->biCompression = fmt;
    
    mux_v->bih->biPlanes = 1;
    if (IMGFMT_IS_RGB(fmt)) {
	if (IMGFMT_RGB_DEPTH(fmt) < 8 && !(fmt&128))
	    mux_v->bih->biBitCount = IMGFMT_RGB_DEPTH(fmt);
	else
	    mux_v->bih->biBitCount = (IMGFMT_RGB_DEPTH(fmt)+7)&(~7);
	return 1;
    }
    if (IMGFMT_IS_BGR(fmt)) {
	if (IMGFMT_BGR_DEPTH(fmt) < 8 && !(fmt&128))
	    mux_v->bih->biBitCount = IMGFMT_BGR_DEPTH(fmt);
	else
	    mux_v->bih->biBitCount = (IMGFMT_BGR_DEPTH(fmt)+7)&(~7);
	return 1;
    }
    switch (fmt) {
    case IMGFMT_I420:
    case IMGFMT_IYUV:
    case IMGFMT_YV12:
    case IMGFMT_411P:
	mux_v->bih->biPlanes = 3;
	mux_v->bih->biBitCount = 12;
	break;
    case IMGFMT_444P:
	mux_v->bih->biPlanes = 3;
	mux_v->bih->biBitCount = 24;
	break;
    case IMGFMT_422P:
	mux_v->bih->biPlanes = 3;
	mux_v->bih->biBitCount = 16;
	break;
    case IMGFMT_IF09:
	mux_v->bih->biPlanes = 4;
    case IMGFMT_YVU9:
	mux_v->bih->biBitCount = 9;
	break;
    case IMGFMT_UYVY:
    case IMGFMT_YUY2:
	mux_v->bih->biBitCount = 16;
	break;
    default:
	printf("ve_raw: raw output with fourcc [%x] not supported!\n", fmt);
	mux_v->bih->biCompression = 0;
	return 0;
    }
    return 1;
}


static int config(struct vf_instance_s *vf,
        int width, int height, int d_width, int d_height,
	unsigned int flags, unsigned int outfmt)
{
    int ret;
    mux_v->bih->biWidth = width;
    mux_v->bih->biHeight = height;
    mux_v->aspect = (float)d_width/d_height;
    ret = set_format(vf, outfmt);
    if (!ret) return 0;

    mux_v->bih->biSizeImage = mux_v->bih->biWidth*mux_v->bih->biHeight*mux_v->bih->biBitCount/8;
    return 1;
}

static int control(struct vf_instance_s *vf, int request, void *data) {
    return CONTROL_UNKNOWN;
}

static int query_format(struct vf_instance_s *vf, unsigned int fmt) {
    if (IMGFMT_IS_RGB(fmt) || IMGFMT_IS_BGR(fmt))
	return VFCAP_CSP_SUPPORTED | VFCAP_CSP_SUPPORTED_BY_HW;
    switch (fmt) {
    case IMGFMT_I420:
    case IMGFMT_IYUV:
    case IMGFMT_YV12:
    case IMGFMT_411P:
    case IMGFMT_444P:
    case IMGFMT_422P:
    case IMGFMT_UYVY:
    case IMGFMT_YUY2:
    case IMGFMT_YVU9:
    case IMGFMT_IF09:
	return VFCAP_CSP_SUPPORTED | VFCAP_CSP_SUPPORTED_BY_HW;
    }

    return 0;
}

static int put_image(struct vf_instance_s *vf, mp_image_t *mpi) {
    mux_v->buffer = mpi->planes[0];
    muxer_write_chunk(mux_v, mpi->width*mpi->height*mux_v->bih->biBitCount/8, 0x10);
    return 1;
}

//===========================================================================//

static int vf_open(vf_instance_t *vf, char* args){
    vf->config = config;
    vf->default_caps = VFCAP_CONSTANT;
    vf->control = control;
    vf->query_format = query_format;
    vf->put_image = put_image;
    vf->default_caps = 0;
    vf->priv = malloc(sizeof(struct vf_priv_s));
    memset(vf->priv, 0, sizeof(struct vf_priv_s));
    vf->priv->mux = (muxer_stream_t*)args;
    
    mux_v->bih = calloc(1, sizeof(BITMAPINFOHEADER));
    mux_v->bih->biSize = sizeof(BITMAPINFOHEADER);
    mux_v->bih->biWidth = 0;
    mux_v->bih->biHeight = 0;

    return 1;
}

vf_info_t ve_info_raw = {
    "raw encoder",
    "raw",
    "jwe21@cam.ac.uk",
    "Based on rawrgb",
    vf_open
};

//===========================================================================//