mirror of https://github.com/mpv-player/mpv.git
88 lines
3.5 KiB
C
88 lines
3.5 KiB
C
#pragma once
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#include "options/m_option.h"
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#include "video/mp_image.h"
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#include "filter.h"
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enum mp_output_chain_type {
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MP_OUTPUT_CHAIN_VIDEO = 1, // --vf
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MP_OUTPUT_CHAIN_AUDIO, // --af
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};
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// A classic single-media filter chain, which reflects --vf and --af.
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// It manages the user-specified filter chain, and VO/AO output conversions.
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// Also handles some automatic filtering (auto rotation and such).
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struct mp_output_chain {
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// This filter will have 1 input (from decoder) and 1 output (to VO/AO).
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struct mp_filter *f;
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bool got_output_eof;
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// The filter chain output could not be converted to any format the output
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// supports.
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bool failed_output_conversion;
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// Set if any formats in the chain changed. The user can reset the flag.
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// For implementing change notifications out input/output_params.
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bool reconfig_happened;
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// --- for type==MP_OUTPUT_CHAIN_VIDEO
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struct mp_image_params input_params;
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struct mp_image_params output_params;
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double container_fps;
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void (*update_subtitles)(void *ctx, double pts);
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void *update_subtitles_ctx;
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// --- for type==MP_OUTPUT_CHAIN_AUDIO
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struct mp_aframe *input_aformat;
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struct mp_aframe *output_aformat;
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// If true, there was a format change. output_aformat might have changed,
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// and the implementation drained the filter chain and unset the internal ao
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// reference. The API user needs to call mp_output_chain_set_ao() again.
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// Until this is done, the filter chain will not output new data.
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bool ao_needs_update;
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};
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// (free by freeing mp_output_chain.f)
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struct mp_output_chain *mp_output_chain_create(struct mp_filter *parent,
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enum mp_output_chain_type type);
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// Set the VO, which will be used to determine basic capabilities like format
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// and rotation support, and to init hardware filtering things.
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// For type==MP_OUTPUT_CHAIN_VIDEO only.
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struct vo;
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void mp_output_chain_set_vo(struct mp_output_chain *p, struct vo *vo);
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// Set the AO. The AO format will be used to determine the filter chain output.
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// The API user may be asked to update the AO midstream if ao_needs_update is
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// set.
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// For type==MP_OUTPUT_CHAIN_AUDIO only.
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struct ao;
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void mp_output_chain_set_ao(struct mp_output_chain *p, struct ao *ao);
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// Send a command to the filter with the target label.
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bool mp_output_chain_command(struct mp_output_chain *p, const char *target,
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struct mp_filter_command *cmd);
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// Perform a seek reset _and_ reset all filter failure states, so that future
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// filtering continues normally.
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void mp_output_chain_reset_harder(struct mp_output_chain *p);
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// Try to exchange the filter list. If creation of any filter fails, roll
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// back the changes, and return false.
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struct m_obj_settings;
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bool mp_output_chain_update_filters(struct mp_output_chain *p,
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struct m_obj_settings *list);
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// Desired audio speed, with resample being strict resampling.
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void mp_output_chain_set_audio_speed(struct mp_output_chain *p,
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double speed, double resample, double drop);
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// Total delay incurred by the filter chain, as measured by the recent filtered
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// frames. The intention is that this sums the measured delays for each filter,
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// so if a filter is removed, the caller can estimate how much audio is missing
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// due to the change.
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// Makes sense for audio only.
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double mp_output_get_measured_total_delay(struct mp_output_chain *p);
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