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Each file that contains copied code names its copyright holder and license and points at THIRD_PARTY_NOTICES.md; zlib code keeps its full notice and the mark that it was altered. Comments and probe text only. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
38 lines
2.5 KiB
C
38 lines
2.5 KiB
C
// Contains code Copyright (c) 2026 MacNativeGames contributors (MIT; see THIRD_PARTY_NOTICES.md).
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// What ov_movie.c (the host movie::Decoder) and movie_probe.c share. The game reaches the decoder through the
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// HOST_OVERRIDE entries named in movie_symbols; the probe calls the same entries with a Cpu of its own and stand-ins for
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// the guest functions the decoder calls.
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#pragma once
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#include <stdint.h>
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#include "host.h"
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// Entries in the order of movie_symbols[]: the imported constructor, then the 19 slots of the vtable for movie::Decoder
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// (subsdk0+0x560700..0x560790, each an ABS64 relocation by name).
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enum { MOVIE_CTOR, MOVIE_D2, MOVIE_D0, MOVIE_CONFIGURE, MOVIE_REGISTER_EVENTS, MOVIE_GET_OUTPUT_FORMAT, MOVIE_START,
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MOVIE_STOP, MOVIE_RESET, MOVIE_FLUSH, MOVIE_ACQUIRE_INPUT, MOVIE_GET_INPUT, MOVIE_SEND_INPUT, MOVIE_ACQUIRE_OUTPUT,
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MOVIE_GET_OUTPUT, MOVIE_GET_OUTPUT_SIZE, MOVIE_RELEASE_OUTPUT, MOVIE_GET_LAST_ERROR, MOVIE_GET_OUTPUT_MD,
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MOVIE_GET_OUTPUT_BUFFER_FORMAT, MOVIE_ENTRIES };
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extern const char *const movie_symbols[MOVIE_ENTRIES];
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// Guest addresses of the functions the decoder calls with rt_call: nn::os::SignalEvent, movie::Buffer and
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// movie::MediaData methods, the vtable address the constructor stores (vtable + 0x10), and the original code of every
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// entry for decoders left to the library. Filled from the loaded modules at the first entry call, or by the probe.
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typedef struct {
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uint64_t signal_event, buf_set_range, buf_set_data, buf_base, buf_capacity;
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uint64_t md_find_int32, md_find_string, md_set_int32, md_set_rect, md_set_string;
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uint64_t vptr;
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uint64_t orig[MOVIE_ENTRIES];
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} MovieGuest;
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enum { MOVIE_EV_INPUT, MOVIE_EV_OUTPUT, MOVIE_EV_FORMAT, MOVIE_EV_ERROR }; // DecoderEvents: EventType * per event
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enum { MOVIE_TYPE_VP9 = 3, MOVIE_MODE_BUFFER = 1, MOVIE_FORMAT_NV12 = 4, MOVIE_FLAG_EOS = 4 };
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typedef struct { uint64_t frames, decode_ns, max_ns, errors, dropped, handed; } MovieStats;
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void movie_set_guest(const MovieGuest *g); // probe: stand-ins instead of the modules
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void movie_set_clock(uint64_t (*clock)(void)); // probe: a fake clock (ns) for the pacing; NULL = real
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void movie_set_pace(int on); // probe: 0 hands every decoded frame over at the next tick
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int movie_stats(uint64_t obj, MovieStats *out); // counters of the decoder at guest object obj; 0 if none
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int movie_quiet(uint64_t obj); // 1 when its worker is idle and cannot take more input now
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