mirror of https://github.com/mpv-player/mpv
389 lines
12 KiB
C
389 lines
12 KiB
C
/*
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* This file is part of mplayer.
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*
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* mplayer is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* mplayer 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 General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with mplayer. 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 <inttypes.h>
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#include <assert.h>
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#include "config.h"
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#include "core/mp_msg.h"
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#include "video/img_format.h"
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#include "video/mp_image.h"
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#include "vf.h"
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#include "core/m_option.h"
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#include "vf_dlopen.h"
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#ifdef _WIN32
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# include <windows.h>
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# define DLLOpen(name) LoadLibrary(name)
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# define DLLClose(handle) FreeLibrary(handle)
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# define DLLSymbol(handle, name) ((void *)GetProcAddress(handle, name))
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#else
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# include <dlfcn.h>
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# define DLLOpen(name) dlopen(name, RTLD_NOW)
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# define DLLClose(handle) dlclose(handle)
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# define DLLSymbol(handle, name) dlsym(handle, name)
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#endif
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static struct vf_priv_s {
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char *cfg_dllname;
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int cfg_argc;
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char *cfg_argv[16];
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void *dll;
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struct vf_dlopen_context filter;
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// output mp_image_t stuff
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mp_image_t *outpic[FILTER_MAX_OUTCNT];
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// generic
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unsigned int out_cnt, out_width, out_height;
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// multi frame output
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unsigned int outbufferpos;
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unsigned int outbufferlen;
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mp_image_t *outbuffermpi;
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// qscale buffer
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unsigned char *qbuffer;
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size_t qbuffersize;
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unsigned int outfmt;
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int argc;
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} const vf_priv_dflt = {};
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struct fmtname {
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const char *name;
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enum mp_imgfmt fmt;
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};
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// This table defines the pixel format names that are guaranteed to work.
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static const struct fmtname format_names[] = {
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{"yv12", IMGFMT_420P},
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{0}
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};
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//===========================================================================//
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static const char *imgfmt_to_name(int fmt)
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{
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for (int n = 0; format_names[n].name; n++) {
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if (format_names[n].fmt == fmt)
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return format_names[n].name;
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}
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return mp_imgfmt_to_name(fmt);
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}
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static int name_to_imgfmt(const char *name)
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{
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for (int n = 0; format_names[n].name; n++) {
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if (strcasecmp(format_names[n].name, name) == 0)
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return format_names[n].fmt;
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}
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return mp_imgfmt_from_name(bstr0(name), false);
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}
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static void set_imgprop(struct vf_dlopen_picdata *out, const mp_image_t *mpi)
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{
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int i;
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out->planes = mpi->num_planes;
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for (i = 0; i < mpi->num_planes; ++i) {
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out->plane[i] = mpi->planes[i];
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out->planestride[i] = mpi->stride[i];
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out->planewidth[i] =
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i ? (/*mpi->chroma_width*/ mpi->w >> mpi->chroma_x_shift) : mpi->w;
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out->planeheight[i] =
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i ? (/*mpi->chroma_height*/ mpi->h >> mpi->chroma_y_shift) : mpi->h;
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out->planexshift[i] = i ? mpi->chroma_x_shift : 0;
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out->planeyshift[i] = i ? mpi->chroma_y_shift : 0;
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}
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}
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static int config(struct vf_instance *vf,
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int width, int height, int d_width, int d_height,
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unsigned int flags, unsigned int fmt)
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{
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vf->priv->filter.in_width = width;
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vf->priv->filter.in_height = height;
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vf->priv->filter.in_d_width = d_width;
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vf->priv->filter.in_d_height = d_height;
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vf->priv->filter.in_fmt = imgfmt_to_name(fmt);
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vf->priv->filter.out_width = width;
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vf->priv->filter.out_height = height;
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vf->priv->filter.out_d_width = d_width;
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vf->priv->filter.out_d_height = d_height;
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vf->priv->filter.out_fmt = NULL;
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vf->priv->filter.out_cnt = 1;
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if (!vf->priv->filter.in_fmt) {
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mp_msg(MSGT_VFILTER, MSGL_ERR, "invalid input/output format\n");
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return 0;
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}
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if (vf->priv->filter.config && vf->priv->filter.config(&vf->priv->filter) < 0) {
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mp_msg(MSGT_VFILTER, MSGL_ERR, "filter config failed\n");
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return 0;
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}
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// copy away stuff to sanity island
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vf->priv->out_cnt = vf->priv->filter.out_cnt;
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vf->priv->out_width = vf->priv->filter.out_width;
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vf->priv->out_height = vf->priv->filter.out_height;
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if (vf->priv->filter.out_fmt)
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vf->priv->outfmt = name_to_imgfmt(vf->priv->filter.out_fmt);
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else {
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struct vf_dlopen_formatpair *p = vf->priv->filter.format_mapping;
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vf->priv->outfmt = 0;
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if (p) {
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for (; p->from; ++p) {
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// TODO support pixel format classes in matching
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if (!strcmp(p->from, vf->priv->filter.in_fmt)) {
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vf->priv->outfmt = name_to_imgfmt(p->to);
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break;
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}
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}
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} else
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vf->priv->outfmt = fmt;
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vf->priv->filter.out_fmt = imgfmt_to_name(vf->priv->outfmt);
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}
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if (!vf->priv->outfmt) {
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mp_msg(MSGT_VFILTER, MSGL_ERR,
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"filter config wants an unsupported output format\n");
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return 0;
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}
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if (!vf->priv->out_cnt || vf->priv->out_cnt > FILTER_MAX_OUTCNT) {
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mp_msg(MSGT_VFILTER, MSGL_ERR,
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"filter config wants to yield zero or too many output frames\n");
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return 0;
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}
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for (int i = 0; i < vf->priv->out_cnt; ++i) {
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talloc_free(vf->priv->outpic[i]);
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vf->priv->outpic[i] =
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mp_image_alloc(vf->priv->out_width, vf->priv->out_height,
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vf->priv->outfmt);
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set_imgprop(&vf->priv->filter.outpic[i], vf->priv->outpic[i]);
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talloc_steal(vf, vf->priv->outpic[i]);
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}
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return vf_next_config(vf, vf->priv->out_width,
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vf->priv->out_height,
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vf->priv->filter.out_d_width,
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vf->priv->filter.out_d_height,
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flags, vf->priv->outfmt);
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}
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static void uninit(struct vf_instance *vf)
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{
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if (vf->priv->filter.uninit)
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vf->priv->filter.uninit(&vf->priv->filter);
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memset(&vf->priv->filter, 0, sizeof(vf->priv->filter));
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if (vf->priv->dll) {
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DLLClose(vf->priv->dll);
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vf->priv->dll = NULL;
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}
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if (vf->priv->qbuffer) {
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free(vf->priv->qbuffer);
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vf->priv->qbuffer = NULL;
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}
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}
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static int filter(struct vf_instance *vf, struct mp_image *mpi)
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{
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int i, k;
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set_imgprop(&vf->priv->filter.inpic, mpi);
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if (mpi->qscale) {
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if (mpi->qscale_type != 0) {
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k = mpi->qstride * ((mpi->h + 15) >> 4);
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if (vf->priv->qbuffersize != k) {
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vf->priv->qbuffer = realloc(vf->priv->qbuffer, k);
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vf->priv->qbuffersize = k;
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}
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for (i = 0; i < k; ++i)
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vf->priv->qbuffer[i] = norm_qscale(mpi->qscale[i],
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mpi->qscale_type);
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vf->priv->filter.inpic_qscale = vf->priv->qbuffer;
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} else
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vf->priv->filter.inpic_qscale = mpi->qscale;
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vf->priv->filter.inpic_qscalestride = mpi->qstride;
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vf->priv->filter.inpic_qscaleshift = 4;
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} else {
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vf->priv->filter.inpic_qscale = NULL;
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vf->priv->filter.inpic_qscalestride = 0;
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vf->priv->filter.inpic_qscaleshift = 0;
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}
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vf->priv->filter.inpic.pts = mpi->pts;
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struct mp_image *out[FILTER_MAX_OUTCNT] = {0};
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for (int n = 0; n < vf->priv->out_cnt; n++) {
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out[n] = vf_alloc_out_image(vf);
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mp_image_copy_attributes(out[n], mpi);
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set_imgprop(&vf->priv->filter.outpic[n], out[n]);
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}
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// more than one out pic
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int ret = vf->priv->filter.put_image(&vf->priv->filter);
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if (ret < 0)
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ret = 0;
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assert(ret <= vf->priv->out_cnt);
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for (int n = 0; n < ret; n++) {
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out[n]->pts = vf->priv->filter.outpic[n].pts;
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vf_add_output_frame(vf, out[n]);
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}
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for (int n = ret; n < FILTER_MAX_OUTCNT; n++) {
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talloc_free(out[n]);
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}
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talloc_free(mpi);
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return 0;
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}
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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))
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return 0; // these can't really be filtered
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if (fmt == IMGFMT_PAL8)
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return 0; // we don't have palette support, sorry
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const char *fmtname = imgfmt_to_name(fmt);
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if (!fmtname)
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return 0;
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struct vf_dlopen_formatpair *p = vf->priv->filter.format_mapping;
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unsigned int outfmt = 0;
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if (p) {
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for (; p->from; ++p) {
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// TODO support pixel format classes in matching
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if (!strcmp(p->from, fmtname)) {
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outfmt = name_to_imgfmt(p->to);
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break;
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}
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}
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} else
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outfmt = fmt;
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if (!outfmt)
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return 0;
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return vf_next_query_format(vf, outfmt);
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}
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static int vf_open(vf_instance_t *vf, char *args)
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{
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int i;
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if (!vf->priv->cfg_dllname) {
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mp_msg(MSGT_VFILTER, MSGL_ERR,
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"usage: -vf dlopen=filename.so:function:args\n");
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return 0;
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}
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vf->priv->dll = DLLOpen(vf->priv->cfg_dllname);
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if (!vf->priv->dll) {
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mp_msg(MSGT_VFILTER, MSGL_ERR, "library not found: %s\n",
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vf->priv->cfg_dllname);
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return 0;
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}
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vf_dlopen_getcontext_func *func =
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(vf_dlopen_getcontext_func *) DLLSymbol(vf->priv->dll, "vf_dlopen_getcontext");
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if (!func) {
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mp_msg(MSGT_VFILTER, MSGL_ERR, "library is not a filter: %s\n",
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vf->priv->cfg_dllname);
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return 0;
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}
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memset(&vf->priv->filter, 0, sizeof(vf->priv->filter));
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vf->priv->filter.major_version = VF_DLOPEN_MAJOR_VERSION;
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vf->priv->filter.minor_version = VF_DLOPEN_MINOR_VERSION;
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// count arguments
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for (vf->priv->cfg_argc = sizeof(vf->priv->cfg_argv) / sizeof(vf->priv->cfg_argv[0]);
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vf->priv->cfg_argc > 0 && !vf->priv->cfg_argv[vf->priv->cfg_argc - 1];
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--vf->priv->cfg_argc)
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;
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// fix empty arguments
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for (i = 0; i < vf->priv->cfg_argc; ++i)
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if (vf->priv->cfg_argv[i] == NULL)
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vf->priv->cfg_argv[i] = talloc_strdup (vf->priv, "");
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if (func(&vf->priv->filter, vf->priv->cfg_argc,
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(const char **)vf->priv->cfg_argv) < 0)
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{
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mp_msg(MSGT_VFILTER, MSGL_ERR,
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"function did not create a filter: %s\n",
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vf->priv->cfg_dllname);
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return 0;
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}
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if (!vf->priv->filter.put_image) {
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mp_msg(MSGT_VFILTER, MSGL_ERR,
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"function did not create a filter that can put images: %s\n",
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vf->priv->cfg_dllname);
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return 0;
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}
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vf->filter_ext = filter;
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vf->query_format = query_format;
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vf->config = config;
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vf->uninit = uninit;
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return 1;
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}
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#define OPT_BASE_STRUCT struct vf_priv_s
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static const m_option_t vf_opts_fields[] = {
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OPT_STRING("dll", cfg_dllname, 0),
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OPT_STRING("a0", cfg_argv[0], 0),
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OPT_STRING("a1", cfg_argv[1], 0),
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OPT_STRING("a2", cfg_argv[2], 0),
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OPT_STRING("a3", cfg_argv[3], 0),
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OPT_STRING("a4", cfg_argv[4], 0),
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OPT_STRING("a5", cfg_argv[5], 0),
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OPT_STRING("a6", cfg_argv[6], 0),
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OPT_STRING("a7", cfg_argv[7], 0),
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OPT_STRING("a8", cfg_argv[8], 0),
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OPT_STRING("a9", cfg_argv[9], 0),
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OPT_STRING("a10", cfg_argv[10], 0),
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OPT_STRING("a11", cfg_argv[11], 0),
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OPT_STRING("a12", cfg_argv[12], 0),
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OPT_STRING("a13", cfg_argv[13], 0),
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OPT_STRING("a14", cfg_argv[14], 0),
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OPT_STRING("a15", cfg_argv[15], 0),
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{0}
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};
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const vf_info_t vf_info_dlopen = {
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"Dynamic library filter",
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"dlopen",
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"Rudolf Polzer",
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"",
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vf_open,
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.priv_size = sizeof(struct vf_priv_s),
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.priv_defaults = &vf_priv_dflt,
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.options = vf_opts_fields,
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};
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//===========================================================================//
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