Split mplayer.c

mplayer.c was a bit too big. Split it into multiple files. I hope the
way it's split makes sense. Maybe some things don't make too much sense,
or go against intuition. These will fixed as soon as I notice them.

Some files are a bit questionable (misc.c, osd.c, configfiles.c), and
suggestions how to organize this better are welcome.

Regressions are possible due to reorganized include statements.
Obviously I didn't just copy mplayer.c's orgy of include statements, but
recreated them for each file. It's easily possible that there are
oversights and mistakes, which will show up on other platforms.

There is one actual change: the public avutil.h include is removed from
encode.h, and I tried to replace most FFMIN/FFMAX/av_clip uses. I
consider using libavutil too much as dangerous, because the set of
include files they recursively pull in is rather arbitrary and is
different between FFmpeg and Libav.

1 files changed, 225 insertions, 0 deletions

diff --git a/mpvcore/player/sub.c b/mpvcore/player/sub.c
new file mode 100644
index 0000000000..42724486c9
--- /dev/null
+++ b/mpvcore/player/sub.c
@@ -0,0 +1,225 @@
+/*
+ * This file is part of MPlayer.
+ *
+ * MPlayer 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.
+ *
+ * MPlayer 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 MPlayer; if not, write to the Free Software Foundation, Inc.,
+ * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+ */
+
+#include <stddef.h>
+#include <stdbool.h>
+#include <inttypes.h>
+#include <math.h>
+#include <assert.h>
+
+#include "config.h"
+#include "talloc.h"
+
+#include "mpvcore/mp_msg.h"
+#include "mpvcore/options.h"
+#include "mpvcore/mp_common.h"
+
+#include "stream/stream.h"
+#include "sub/dec_sub.h"
+#include "demux/demux.h"
+#include "video/mp_image.h"
+
+#include "mp_core.h"
+#include "mp_osd.h"
+
+void uninit_subs(struct demuxer *demuxer)
+{
+    for (int i = 0; i < demuxer->num_streams; i++) {
+        struct sh_stream *sh = demuxer->streams[i];
+        if (sh->sub) {
+            sub_destroy(sh->sub->dec_sub);
+            sh->sub->dec_sub = NULL;
+        }
+    }
+}
+
+// When reading subtitles from a demuxer, and we read video or audio from the
+// demuxer, we should not explicitly read subtitle packets. (With external
+// subs, we have to.)
+static bool is_interleaved(struct MPContext *mpctx, struct track *track)
+{
+    if (track->is_external || !track->demuxer)
+        return false;
+
+    struct demuxer *demuxer = track->demuxer;
+    for (int type = 0; type < STREAM_TYPE_COUNT; type++) {
+        struct track *other = mpctx->current_track[type];
+        if (other && other != track && other->demuxer && other->demuxer == demuxer)
+            return true;
+    }
+    return false;
+}
+
+void reset_subtitles(struct MPContext *mpctx)
+{
+    if (mpctx->sh_sub)
+        sub_reset(mpctx->sh_sub->dec_sub);
+    set_osd_subtitle(mpctx, NULL);
+    osd_changed(mpctx->osd, OSDTYPE_SUB);
+}
+
+void update_subtitles(struct MPContext *mpctx)
+{
+    struct MPOpts *opts = mpctx->opts;
+    if (!(mpctx->initialized_flags & INITIALIZED_SUB))
+        return;
+
+    struct track *track = mpctx->current_track[STREAM_SUB];
+    struct sh_sub *sh_sub = mpctx->sh_sub;
+    assert(track && sh_sub);
+    struct dec_sub *dec_sub = sh_sub->dec_sub;
+
+    if (mpctx->sh_video && mpctx->sh_video->vf_input) {
+        struct mp_image_params params = *mpctx->sh_video->vf_input;
+        sub_control(dec_sub, SD_CTRL_SET_VIDEO_PARAMS, &params);
+    }
+
+    mpctx->osd->video_offset = track->under_timeline ? mpctx->video_offset : 0;
+
+    double refpts_s = mpctx->playback_pts - mpctx->osd->video_offset;
+    double curpts_s = refpts_s + opts->sub_delay;
+
+    if (!track->preloaded) {
+        bool interleaved = is_interleaved(mpctx, track);
+
+        while (1) {
+            if (interleaved && !demux_has_packet(sh_sub->gsh))
+                break;
+            double subpts_s = demux_get_next_pts(sh_sub->gsh);
+            if (!demux_has_packet(sh_sub->gsh))
+                break;
+            if (subpts_s > curpts_s) {
+                mp_dbg(MSGT_CPLAYER, MSGL_DBG2,
+                       "Sub early: c_pts=%5.3f s_pts=%5.3f\n",
+                       curpts_s, subpts_s);
+                // Libass handled subs can be fed to it in advance
+                if (!sub_accept_packets_in_advance(dec_sub))
+                    break;
+                // Try to avoid demuxing whole file at once
+                if (subpts_s > curpts_s + 1 && !interleaved)
+                    break;
+            }
+            struct demux_packet *pkt = demux_read_packet(sh_sub->gsh);
+            mp_dbg(MSGT_CPLAYER, MSGL_V, "Sub: c_pts=%5.3f s_pts=%5.3f "
+                   "duration=%5.3f len=%d\n", curpts_s, pkt->pts, pkt->duration,
+                   pkt->len);
+            sub_decode(dec_sub, pkt);
+            talloc_free(pkt);
+        }
+    }
+
+    if (!mpctx->osd->render_bitmap_subs || !mpctx->video_out)
+        set_osd_subtitle(mpctx, sub_get_text(dec_sub, curpts_s));
+}
+
+static void set_dvdsub_fake_extradata(struct dec_sub *dec_sub, struct stream *st,
+                                      int width, int height)
+{
+#ifdef CONFIG_DVDREAD
+    if (!st)
+        return;
+
+    struct stream_dvd_info_req info;
+    if (stream_control(st, STREAM_CTRL_GET_DVD_INFO, &info) < 0)
+        return;
+
+    struct mp_csp_params csp = MP_CSP_PARAMS_DEFAULTS;
+    csp.int_bits_in = 8;
+    csp.int_bits_out = 8;
+    float cmatrix[3][4];
+    mp_get_yuv2rgb_coeffs(&csp, cmatrix);
+
+    if (width == 0 || height == 0) {
+        width = 720;
+        height = 480;
+    }
+
+    char *s = NULL;
+    s = talloc_asprintf_append(s, "size: %dx%d\n", width, height);
+    s = talloc_asprintf_append(s, "palette: ");
+    for (int i = 0; i < 16; i++) {
+        int color = info.palette[i];
+        int c[3] = {(color >> 16) & 0xff, (color >> 8) & 0xff, color & 0xff};
+        mp_map_int_color(cmatrix, 8, c);
+        color = (c[2] << 16) | (c[1] << 8) | c[0];
+
+        if (i != 0)
+            talloc_asprintf_append(s, ", ");
+        s = talloc_asprintf_append(s, "%06x", color);
+    }
+    s = talloc_asprintf_append(s, "\n");
+
+    sub_set_extradata(dec_sub, s, strlen(s));
+    talloc_free(s);
+#endif
+}
+
+void reinit_subs(struct MPContext *mpctx)
+{
+    struct MPOpts *opts = mpctx->opts;
+    struct track *track = mpctx->current_track[STREAM_SUB];
+
+    assert(!(mpctx->initialized_flags & INITIALIZED_SUB));
+
+    init_demux_stream(mpctx, STREAM_SUB);
+    if (!mpctx->sh_sub)
+        return;
+
+    if (!mpctx->sh_sub->dec_sub)
+        mpctx->sh_sub->dec_sub = sub_create(opts);
+
+    assert(track->demuxer);
+    // Lazily added DVD track - will be created on first sub packet
+    if (!track->stream)
+        return;
+
+    mpctx->initialized_flags |= INITIALIZED_SUB;
+
+    struct sh_sub *sh_sub = mpctx->sh_sub;
+    struct dec_sub *dec_sub = sh_sub->dec_sub;
+    assert(dec_sub);
+
+    if (!sub_is_initialized(dec_sub)) {
+        int w = mpctx->sh_video ? mpctx->sh_video->disp_w : 0;
+        int h = mpctx->sh_video ? mpctx->sh_video->disp_h : 0;
+        float fps = mpctx->sh_video ? mpctx->sh_video->fps : 25;
+
+        set_dvdsub_fake_extradata(dec_sub, track->demuxer->stream, w, h);
+        sub_set_video_res(dec_sub, w, h);
+        sub_set_video_fps(dec_sub, fps);
+        sub_set_ass_renderer(dec_sub, mpctx->osd->ass_library,
+                             mpctx->osd->ass_renderer);
+        sub_init_from_sh(dec_sub, sh_sub);
+
+        // Don't do this if the file has video/audio streams. Don't do it even
+        // if it has only sub streams, because reading packets will change the
+        // demuxer position.
+        if (!track->preloaded && track->is_external) {
+            demux_seek(track->demuxer, 0, SEEK_ABSOLUTE);
+            track->preloaded = sub_read_all_packets(dec_sub, sh_sub);
+        }
+    }
+
+    mpctx->osd->dec_sub = dec_sub;
+
+    // Decides whether to use OSD path or normal subtitle rendering path.
+    mpctx->osd->render_bitmap_subs =
+        opts->ass_enabled || !sub_has_get_text(dec_sub);
+
+    reset_subtitles(mpctx);
+}