feat: video player

2026-03-28 17:26:25 +01:00
parent 1bc957ec43
commit 5049d6529d
9 changed files with 2289 additions and 4 deletions
@@ -0,0 +1,73 @@
+#pragma once
+
+#include <cstdint>
+
+namespace avi {
+
+enum class VideoCodec {
+    None,
+    RGB24,
+    RGB32,
+    MJPG,
+};
+
+struct ChunkRef {
+    uint32_t offset;
+    uint32_t size;
+};
+
+struct File {
+    int fd;
+    uint64_t size;
+
+    int width;
+    int height;
+    bool top_down;
+    int bits_per_pixel;
+    VideoCodec codec;
+
+    uint32_t stream_scale;
+    uint32_t stream_rate;
+    uint32_t microsec_per_frame;
+    uint32_t declared_frame_count;
+
+    uint16_t audio_format;
+    uint16_t audio_channels;
+    uint16_t audio_bits;
+    uint16_t audio_block_align;
+    uint32_t audio_rate;
+    uint32_t audio_avg_bytes_per_sec;
+    bool audio_supported;
+
+    ChunkRef* video_chunks;
+    int video_chunk_count;
+    int video_chunk_cap;
+
+    ChunkRef* audio_chunks;
+    int audio_chunk_count;
+    int audio_chunk_cap;
+
+    uint64_t total_audio_bytes;
+    uint64_t total_audio_frames;
+
+    uint8_t* decode_buffer;
+    uint32_t decode_buffer_cap;
+
+    bool valid;
+    char error[128];
+};
+
+void reset(File& file);
+bool parse(File& file, int fd, uint64_t size);
+bool read_bytes(const File& file, uint64_t offset, uint8_t* out, uint32_t size);
+bool decode_frame(File& file, int frame_index, uint32_t* out_argb);
+
+uint64_t video_duration_us(const File& file);
+uint64_t audio_duration_us(const File& file);
+uint64_t duration_us(const File& file);
+
+int frame_index_for_time(const File& file, uint64_t time_us);
+const char* codec_name(const File& file);
+bool has_supported_audio(const File& file);
+
+} // namespace avi