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🎥 Command line media player
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C
1234567891011121314151617181920212223242526272829303132333435363738394041424344454647484950515253545556575859606162636465666768697071727374757677787980818283848586#pragma once
#include "filter.h"#include "video/sws_utils.h"
struct mp_image;struct mp_image_params;
// A filter which automatically creates and uses a conversion filter based on// the filter settings, or passes through data unchanged if no conversion is// required.struct mp_autoconvert { // f->pins[0] is input, f->pins[1] is output struct mp_filter *f;
enum mp_sws_scaler force_scaler;
// If this is set, the callback is invoked (from the process function), and // further data flow is blocked until mp_autoconvert_format_change_continue() // is called. The idea is that you can reselect the output parameters on // format changes and continue filtering when ready. void (*on_audio_format_change)(void *opaque); void *on_audio_format_change_opaque;};
// (to free this, free the filter itself, mp_autoconvert.f)struct mp_autoconvert *mp_autoconvert_create(struct mp_filter *parent);
// Require that output frames have the following params set.// This implicitly clears the image format list, and calls// mp_autoconvert_add_imgfmt() with the values in *p.// Idempotent on subsequent calls (no reinit forced if parameters don't change).// Mixing this with other format-altering calls has undefined effects.void mp_autoconvert_set_target_image_params(struct mp_autoconvert *c, struct mp_image_params *p);
// Add the imgfmt as allowed video image format, and error on non-video frames.// Each call adds to the list of allowed formats. Before the first call, all// formats are allowed (even non-video).// subfmt can be used to specify underlying surface formats for hardware formats,// otherwise must be 0. (Mismatches lead to conversion errors.)void mp_autoconvert_add_imgfmt(struct mp_autoconvert *c, int imgfmt, int subfmt);
// Add all sw image formats. The effect is that hardware video image formats are// disallowed. The semantics are the same as calling mp_autoconvert_add_imgfmt()// for each sw format that exists.// No need to do this if you add sw formats with mp_autoconvert_add_imgfmt(),// as the normal semantics will exclude other formats (including hw ones).void mp_autoconvert_add_all_sw_imgfmts(struct mp_autoconvert *c);
// Approximate test for whether the input would be accepted for conversion// according to the current settings. If false is returned, conversion will// definitely fail; if true is returned, it might succeed, but with no hard// guarantee. This is mainly intended for better error reporting to the user.// The result is "approximate" because it could still fail at runtime.// The mp_image is not mutated.// This function is relatively slow.// Accepting mp_image instead of any mp_frame is the result of laziness.bool mp_autoconvert_probe_input_video(struct mp_autoconvert *c, struct mp_image *img);
// This is pointless.struct mp_hwdec_devices;void mp_autoconvert_add_vo_hwdec_subfmts(struct mp_autoconvert *c, struct mp_hwdec_devices *devs);
// Add afmt (an AF_FORMAT_* value) as allowed audio format.// See mp_autoconvert_add_imgfmt() for other remarks.void mp_autoconvert_add_afmt(struct mp_autoconvert *c, int afmt);
// Add allowed audio channel configuration.struct mp_chmap;void mp_autoconvert_add_chmap(struct mp_autoconvert *c, struct mp_chmap *chmap);
// Add allowed audio sample rate.void mp_autoconvert_add_srate(struct mp_autoconvert *c, int rate);
// Reset set of allowed formats back to initial state. (This does not flush// any frames or remove currently active filters, although to get reasonable// behavior, you need to re-add all previously allowed formats, or reset the// filter.)void mp_autoconvert_clear(struct mp_autoconvert *c);
// See mp_autoconvert.on_audio_format_change.void mp_autoconvert_format_change_continue(struct mp_autoconvert *c);