1 files changed, 104 insertions, 0 deletions
diff --git a/filters/f_decoder_wrapper.h b/filters/f_decoder_wrapper.h
new file mode 100644
index 0000000000..4d970bd79a
--- /dev/null
+++ b/filters/f_decoder_wrapper.h
@@ -0,0 +1,104 @@
+/*
+ * This file is part of mpv.
+ *
+ * mpv is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * mpv 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 Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with mpv.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#pragma once
+
+#include <stdbool.h>
+
+#include "filter.h"
+
+struct sh_stream;
+struct mp_codec_params;
+struct mp_image_params;
+struct mp_decoder_list;
+struct demux_packet;
+
+// (free with talloc_free(mp_decoder_wrapper.f)
+struct mp_decoder_wrapper {
+    // Filter with no input and 1 output, which returns the decoded data.
+    struct mp_filter *f;
+
+    // For informational purposes.
+    char *decoder_desc;
+
+    // Can be set by user.
+    struct mp_recorder_sink *recorder_sink;
+
+    // --- for STREAM_VIDEO
+
+    // FPS from demuxer or from user override
+    float fps;
+
+    // Framedrop control for playback (not used for hr seek etc.)
+    int attempt_framedrops; // try dropping this many frames
+    int dropped_frames; // total frames _probably_ dropped
+};
+
+// Create the decoder wrapper for the given stream, plus underlying decoder.
+// The src stream must be selected, and remain valid and selected until the
+// wrapper is destroyed.
+struct mp_decoder_wrapper *mp_decoder_wrapper_create(struct mp_filter *parent,
+                                                     struct sh_stream *src);
+
+struct mp_decoder_list *video_decoder_list(void);
+
+// For precise seeking: if possible, try to drop frames up until the given PTS.
+// This is automatically unset if the target is reached, or on reset.
+void mp_decoder_wrapper_set_start_pts(struct mp_decoder_wrapper *d, double pts);
+
+enum dec_ctrl {
+    VDCTRL_FORCE_HWDEC_FALLBACK, // force software decoding fallback
+    VDCTRL_GET_HWDEC,
+    VDCTRL_REINIT,
+    VDCTRL_GET_BFRAMES,
+    // framedrop mode: 0=none, 1=standard, 2=hrseek
+    VDCTRL_SET_FRAMEDROP,
+};
+
+int mp_decoder_wrapper_control(struct mp_decoder_wrapper *d,
+                               enum dec_ctrl cmd, void *arg);
+
+// Force it to reevaluate output parameters (for overrides like aspect).
+void mp_decoder_wrapper_reset_params(struct mp_decoder_wrapper *d);
+
+void mp_decoder_wrapper_get_video_dec_params(struct mp_decoder_wrapper *d,
+                                             struct mp_image_params *p);
+
+bool mp_decoder_wrapper_reinit(struct mp_decoder_wrapper *d);
+
+struct mp_decoder {
+    // Bidirectional filter; takes MP_FRAME_PACKET for input.
+    struct mp_filter *f;
+
+    // Can be set by decoder impl. on init for "special" functionality.
+    int (*control)(struct mp_filter *f, enum dec_ctrl cmd, void *arg);
+};
+
+struct mp_decoder_fns {
+    struct mp_decoder *(*create)(struct mp_filter *parent,
+                                 struct mp_codec_params *codec,
+                                 const char *decoder);
+    void (*add_decoders)(struct mp_decoder_list *list);
+};
+
+extern const struct mp_decoder_fns vd_lavc;
+
+// Convenience wrapper for lavc based decoders. eof_flag must be set to false
+// on init and resets.
+void lavc_process(struct mp_filter *f, bool *eof_flag,
+                  bool (*send)(struct mp_filter *f, struct demux_packet *pkt),
+                  bool (*receive)(struct mp_filter *f, struct mp_frame *res));