mirror of
https://github.com/mpv-player/mpv
synced 2024-12-22 23:02:37 +00:00
406241005e
Followup commit. Fixes all the files references.
274 lines
8.5 KiB
C
274 lines
8.5 KiB
C
/*
|
|
* This file is part of mplayer2.
|
|
*
|
|
* mplayer2 is free software; you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License as published by
|
|
* the Free Software Foundation; either version 2 of the License, or
|
|
* (at your option) any later version.
|
|
*
|
|
* mplayer2 is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
* GNU General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License along
|
|
* with mplayer2. If not, see <http://www.gnu.org/licenses/>.
|
|
*/
|
|
|
|
#include <stdlib.h>
|
|
#include <assert.h>
|
|
|
|
#include <libavcodec/avcodec.h>
|
|
#include <libavutil/common.h>
|
|
|
|
#include "talloc.h"
|
|
#include "mpvcore/mp_msg.h"
|
|
#include "mpvcore/av_common.h"
|
|
#include "mpvcore/options.h"
|
|
#include "demux/stheader.h"
|
|
#include "sd.h"
|
|
#include "dec_sub.h"
|
|
#include "sub.h"
|
|
|
|
struct sd_lavc_priv {
|
|
AVCodecContext *avctx;
|
|
AVSubtitle sub;
|
|
bool have_sub;
|
|
int count;
|
|
struct sub_bitmap *inbitmaps;
|
|
struct sub_bitmap *outbitmaps;
|
|
struct osd_bmp_indexed *imgs;
|
|
bool bitmaps_changed;
|
|
double pts;
|
|
double endpts;
|
|
};
|
|
|
|
static bool supports_format(const char *format)
|
|
{
|
|
enum AVCodecID cid = mp_codec_to_av_codec_id(format);
|
|
// Supported codecs must be known to decode to paletted bitmaps
|
|
switch (cid) {
|
|
case AV_CODEC_ID_DVB_SUBTITLE:
|
|
case AV_CODEC_ID_HDMV_PGS_SUBTITLE:
|
|
case AV_CODEC_ID_XSUB:
|
|
// lavc dvdsubdec doesn't read color/resolution on Libav 9.1 and below,
|
|
// so fall back to sd_spu in this case. Never use sd_spu with new ffmpeg;
|
|
// spudec can't handle ffmpeg .idx demuxing (added to lavc in 54.79.100).
|
|
#if LIBAVCODEC_VERSION_INT >= AV_VERSION_INT(54, 40, 0)
|
|
case AV_CODEC_ID_DVD_SUBTITLE:
|
|
#endif
|
|
return true;
|
|
default:
|
|
return false;
|
|
}
|
|
}
|
|
|
|
static void guess_resolution(enum AVCodecID type, int *w, int *h)
|
|
{
|
|
if (type == AV_CODEC_ID_DVD_SUBTITLE) {
|
|
/* XXX Although the video frame is some size, the SPU frame is
|
|
always maximum size i.e. 720 wide and 576 or 480 high */
|
|
// For HD files in MKV the VobSub resolution can be higher though,
|
|
// see largeres_vobsub.mkv
|
|
if (*w <= 720 && *h <= 576) {
|
|
*w = 720;
|
|
*h = (*h == 480 || *h == 240) ? 480 : 576;
|
|
}
|
|
} else {
|
|
// Hope that PGS subs set these and 720/576 works for dvb subs
|
|
if (!*w)
|
|
*w = 720;
|
|
if (!*h)
|
|
*h = 576;
|
|
}
|
|
}
|
|
|
|
static int init(struct sd *sd)
|
|
{
|
|
struct sd_lavc_priv *priv = talloc_zero(NULL, struct sd_lavc_priv);
|
|
enum AVCodecID cid = mp_codec_to_av_codec_id(sd->codec);
|
|
AVCodecContext *ctx = NULL;
|
|
AVCodec *sub_codec = avcodec_find_decoder(cid);
|
|
if (!sub_codec)
|
|
goto error;
|
|
ctx = avcodec_alloc_context3(sub_codec);
|
|
if (!ctx)
|
|
goto error;
|
|
ctx->extradata_size = sd->extradata_len;
|
|
ctx->extradata = sd->extradata;
|
|
if (avcodec_open2(ctx, sub_codec, NULL) < 0)
|
|
goto error;
|
|
priv->avctx = ctx;
|
|
sd->priv = priv;
|
|
return 0;
|
|
|
|
error:
|
|
mp_msg(MSGT_SUBREADER, MSGL_ERR,
|
|
"Could not open libavcodec subtitle decoder\n");
|
|
av_free(ctx);
|
|
talloc_free(priv);
|
|
return -1;
|
|
}
|
|
|
|
static void clear(struct sd_lavc_priv *priv)
|
|
{
|
|
priv->count = 0;
|
|
talloc_free(priv->inbitmaps);
|
|
talloc_free(priv->outbitmaps);
|
|
priv->inbitmaps = priv->outbitmaps = NULL;
|
|
talloc_free(priv->imgs);
|
|
priv->imgs = NULL;
|
|
priv->bitmaps_changed = true;
|
|
priv->pts = MP_NOPTS_VALUE;
|
|
priv->endpts = MP_NOPTS_VALUE;
|
|
if (priv->have_sub)
|
|
avsubtitle_free(&priv->sub);
|
|
priv->have_sub = false;
|
|
}
|
|
|
|
static void decode(struct sd *sd, struct demux_packet *packet)
|
|
{
|
|
struct MPOpts *opts = sd->opts;
|
|
struct sd_lavc_priv *priv = sd->priv;
|
|
AVCodecContext *ctx = priv->avctx;
|
|
double pts = packet->pts;
|
|
double duration = packet->duration;
|
|
AVSubtitle sub;
|
|
AVPacket pkt;
|
|
|
|
clear(priv);
|
|
av_init_packet(&pkt);
|
|
pkt.data = packet->buffer;
|
|
pkt.size = packet->len;
|
|
pkt.pts = pts * 1000;
|
|
if (duration >= 0)
|
|
pkt.convergence_duration = duration * 1000;
|
|
int got_sub;
|
|
int res = avcodec_decode_subtitle2(ctx, &sub, &got_sub, &pkt);
|
|
if (res < 0 || !got_sub)
|
|
return;
|
|
priv->sub = sub;
|
|
priv->have_sub = true;
|
|
if (pts != MP_NOPTS_VALUE) {
|
|
if (sub.end_display_time > sub.start_display_time)
|
|
duration = (sub.end_display_time - sub.start_display_time) / 1000.0;
|
|
pts += sub.start_display_time / 1000.0;
|
|
}
|
|
double endpts = MP_NOPTS_VALUE;
|
|
if (pts != MP_NOPTS_VALUE && duration >= 0)
|
|
endpts = pts + duration;
|
|
if (sub.num_rects > 0) {
|
|
switch (sub.rects[0]->type) {
|
|
case SUBTITLE_BITMAP:
|
|
priv->count = 0;
|
|
priv->pts = pts;
|
|
priv->endpts = endpts;
|
|
priv->inbitmaps = talloc_array(priv, struct sub_bitmap,
|
|
sub.num_rects);
|
|
priv->imgs = talloc_array(priv, struct osd_bmp_indexed,
|
|
sub.num_rects);
|
|
for (int i = 0; i < sub.num_rects; i++) {
|
|
struct AVSubtitleRect *r = sub.rects[i];
|
|
struct sub_bitmap *b = &priv->inbitmaps[i];
|
|
struct osd_bmp_indexed *img = &priv->imgs[i];
|
|
if (!(r->flags & AV_SUBTITLE_FLAG_FORCED) &&
|
|
opts->forced_subs_only)
|
|
continue;
|
|
img->bitmap = r->pict.data[0];
|
|
assert(r->nb_colors > 0);
|
|
assert(r->nb_colors * 4 <= sizeof(img->palette));
|
|
memcpy(img->palette, r->pict.data[1], r->nb_colors * 4);
|
|
b->bitmap = img;
|
|
b->stride = r->pict.linesize[0];
|
|
b->w = r->w;
|
|
b->h = r->h;
|
|
b->x = r->x;
|
|
b->y = r->y;
|
|
priv->count++;
|
|
}
|
|
break;
|
|
default:
|
|
mp_msg(MSGT_SUBREADER, MSGL_ERR, "sd_lavc: unsupported subtitle "
|
|
"type from libavcodec\n");
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
static void get_bitmaps(struct sd *sd, struct mp_osd_res d, double pts,
|
|
struct sub_bitmaps *res)
|
|
{
|
|
struct sd_lavc_priv *priv = sd->priv;
|
|
|
|
if (priv->pts != MP_NOPTS_VALUE && pts < priv->pts)
|
|
return;
|
|
if (priv->endpts != MP_NOPTS_VALUE && (pts >= priv->endpts ||
|
|
pts < priv->endpts - 300))
|
|
clear(priv);
|
|
if (priv->bitmaps_changed && priv->count > 0)
|
|
priv->outbitmaps = talloc_memdup(priv, priv->inbitmaps,
|
|
talloc_get_size(priv->inbitmaps));
|
|
int inw = priv->avctx->width;
|
|
int inh = priv->avctx->height;
|
|
guess_resolution(priv->avctx->codec_id, &inw, &inh);
|
|
int vidw = d.w - d.ml - d.mr;
|
|
int vidh = d.h - d.mt - d.mb;
|
|
double xscale = (double)vidw / inw;
|
|
double yscale = (double)vidh / inh;
|
|
if (priv->avctx->codec_id == AV_CODEC_ID_DVD_SUBTITLE) {
|
|
// For DVD subs, try to keep the subtitle PAR at display PAR.
|
|
if (d.video_par > 1.0) {
|
|
xscale /= d.video_par;
|
|
} else {
|
|
yscale *= d.video_par;
|
|
}
|
|
}
|
|
int cx = vidw / 2 - (int)(inw * xscale) / 2;
|
|
int cy = vidh / 2 - (int)(inh * yscale) / 2;
|
|
for (int i = 0; i < priv->count; i++) {
|
|
struct sub_bitmap *bi = &priv->inbitmaps[i];
|
|
struct sub_bitmap *bo = &priv->outbitmaps[i];
|
|
bo->x = bi->x * xscale + cx + d.ml;
|
|
bo->y = bi->y * yscale + cy + d.mt;
|
|
bo->dw = bi->w * xscale;
|
|
bo->dh = bi->h * yscale;
|
|
}
|
|
res->parts = priv->outbitmaps;
|
|
res->num_parts = priv->count;
|
|
if (priv->bitmaps_changed)
|
|
res->bitmap_id = ++res->bitmap_pos_id;
|
|
priv->bitmaps_changed = false;
|
|
res->format = SUBBITMAP_INDEXED;
|
|
res->scaled = xscale != 1 || yscale != 1;
|
|
}
|
|
|
|
static void reset(struct sd *sd)
|
|
{
|
|
struct sd_lavc_priv *priv = sd->priv;
|
|
|
|
if (priv->pts == MP_NOPTS_VALUE)
|
|
clear(priv);
|
|
// lavc might not do this right for all codecs; may need close+reopen
|
|
avcodec_flush_buffers(priv->avctx);
|
|
}
|
|
|
|
static void uninit(struct sd *sd)
|
|
{
|
|
struct sd_lavc_priv *priv = sd->priv;
|
|
|
|
clear(priv);
|
|
avcodec_close(priv->avctx);
|
|
av_free(priv->avctx);
|
|
talloc_free(priv);
|
|
}
|
|
|
|
const struct sd_functions sd_lavc = {
|
|
.name = "lavc",
|
|
.supports_format = supports_format,
|
|
.init = init,
|
|
.decode = decode,
|
|
.get_bitmaps = get_bitmaps,
|
|
.reset = reset,
|
|
.uninit = uninit,
|
|
};
|