mirror of https://github.com/mpv-player/mpv
129 lines
3.3 KiB
C
129 lines
3.3 KiB
C
/*
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* This file is part of mpv.
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*
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* mpv is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* mpv is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with mpv. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <math.h>
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#include <inttypes.h>
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#include <stdarg.h>
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#include <assert.h>
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#include <libswscale/swscale.h>
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#include "common/av_common.h"
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#include "common/msg.h"
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#include "options/options.h"
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#include "video/img_format.h"
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#include "video/mp_image.h"
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#include "video/sws_utils.h"
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#include "video/fmt-conversion.h"
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#include "vf.h"
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struct vf_priv_s {
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struct mp_sws_context *sws;
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};
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static int find_best_out(vf_instance_t *vf, int in_format)
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{
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int best = 0;
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for (int out_format = IMGFMT_START; out_format < IMGFMT_END; out_format++) {
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if (!vf_next_query_format(vf, out_format))
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continue;
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if (sws_isSupportedOutput(imgfmt2pixfmt(out_format)) < 1)
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continue;
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if (best) {
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int candidate = mp_imgfmt_select_best(best, out_format, in_format);
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if (candidate)
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best = candidate;
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} else {
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best = out_format;
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}
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}
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return best;
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}
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static int reconfig(struct vf_instance *vf, struct mp_image_params *in,
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struct mp_image_params *out)
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{
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unsigned int best = find_best_out(vf, in->imgfmt);
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if (!best) {
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MP_WARN(vf, "no supported output format found\n");
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return -1;
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}
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*out = *in;
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out->imgfmt = best;
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mp_image_params_guess_csp(out);
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mp_sws_set_from_cmdline(vf->priv->sws, vf->chain->opts->vo->sws_opts);
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vf->priv->sws->src = *in;
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vf->priv->sws->dst = *out;
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if (mp_sws_reinit(vf->priv->sws) < 0) {
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// error...
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MP_WARN(vf, "Couldn't init libswscale for this setup\n");
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return -1;
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}
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return 0;
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}
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static struct mp_image *filter(struct vf_instance *vf, struct mp_image *mpi)
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{
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struct mp_image *dmpi = vf_alloc_out_image(vf);
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if (!dmpi)
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return NULL;
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mp_image_copy_attributes(dmpi, mpi);
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mp_sws_scale(vf->priv->sws, dmpi, mpi);
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talloc_free(mpi);
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return dmpi;
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}
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static int query_format(struct vf_instance *vf, unsigned int fmt)
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{
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if (IMGFMT_IS_HWACCEL(fmt) || sws_isSupportedInput(imgfmt2pixfmt(fmt)) < 1)
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return 0;
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return !!find_best_out(vf, fmt);
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}
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static void uninit(struct vf_instance *vf)
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{
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}
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static int vf_open(vf_instance_t *vf)
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{
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vf->reconfig = reconfig;
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vf->filter = filter;
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vf->query_format = query_format;
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vf->uninit = uninit;
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vf->priv->sws = mp_sws_alloc(vf);
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vf->priv->sws->log = vf->log;
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return 1;
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}
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const vf_info_t vf_info_convert = {
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.description = "image format conversion with libswscale",
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.name = "convert",
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.open = vf_open,
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.priv_size = sizeof(struct vf_priv_s),
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};
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