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109 lines
2.4 KiB
109 lines
2.4 KiB
// |
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// ffmpeg/avconv-based video export functions |
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// (experimental) |
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// |
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fn ffmpeg_video_export_thread( $thread_id, $ff ) |
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{ |
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if $ff < 0 { ret( 0 ) } |
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$ts = "" |
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$audio = "" |
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$audio2 = "" |
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if $ff.audio_file_name > 0 |
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{ |
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sprintf( $audio, "-i \"%s\"", $ff.audio_file_name ) |
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$audio2 = "-acodec pcm_s16le" |
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} |
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$vcodec = "" |
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if $ff.kbits == 0 |
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{ |
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sprintf( $vcodec, "-vcodec libx264 -b:v 2000k -preset fast" ) |
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} |
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else |
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{ |
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sprintf( $vcodec, "-vcodec libx264 -b:v %uk -preset slow", $ff.kbits ) |
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} |
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sprintf( |
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$ts, |
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"%s %s -y -pix_fmt bgr32 -s %dx%d -f rawvideo -r %d -i \"%s\" %s %s \"%s\"", |
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g_avconv, |
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$audio, |
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$ff.xsize, |
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$ff.ysize, |
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$ff.fps, |
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$ff.pipe_name, |
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$vcodec, |
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$audio2, |
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$ff.name ) |
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printf( "FFmpeg (output) command: %s\n", $ts ) |
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system( $ts ) |
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} |
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fn ffmpeg_video_export_open( $filename, $xsize, $ysize, $fps, $kbits, $max_frames, $audio_file_name ) |
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{ |
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g_avconv = -1 |
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while 1 |
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{ |
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if system( "ffmpeg -version" ) == 0 { g_avconv = "ffmpeg" break } |
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if system( "avconv -version" ) == 0 { g_avconv = "avconv" break } |
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break |
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} |
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if g_avconv == -1 |
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{ |
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logf( "No AV converters detected. Please install ffmpeg or avconv!\n" ) |
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logf( "Please also note that this library is designed for *nix systems (Linux, macOS, BSD, etc.) only.\n" ) |
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ret( -1 ) |
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} |
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$ff = new( 1, 1, INT ) |
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$ff.xsize = $xsize |
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$ff.ysize = $ysize |
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$ff.fps = $fps |
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$ff.kbits = $kbits |
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$ff.name = $filename |
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$ff.pipe_name = new( 1, 1, INT8 ) |
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sprintf( $ff.pipe_name, "/tmp/avconv_vpipe_%d", $ff ) |
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$ff.frame = 0 |
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$ff.max_frames = $max_frames |
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if $0 >= 7 |
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{ |
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$ff.audio_file_name = $audio_file_name |
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} |
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$ts = "" |
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sprintf( $ts, "mkfifo %s", $ff.pipe_name ) |
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system( $ts ) |
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$ff.th = thread_create( ffmpeg_video_export_thread, $ff ) |
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ret( $ff ) |
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} |
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fn ffmpeg_video_export_close( $ff ) |
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{ |
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if $ff < 0 { ret( 0 ) } |
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if $ff.pipe_f |
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{ |
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fclose( $ff.pipe_f ) |
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} |
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thread_destroy( $ff.th, INT_MAX ) |
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remove_file( $ff.pipe_name ) |
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remove( $ff.pipe_name ) |
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remove( $ff ) |
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} |
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fn ffmpeg_video_export_write( $ff, $buf ) |
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{ |
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if $ff < 0 { ret( 0 ) } |
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if $ff.pipe_f == 0 { $ff.pipe_f = fopen( $ff.pipe_name, "wb" ) } |
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if $ff.pipe_f |
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{ |
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fwrite( $buf, get_size( $buf ) * get_esize( $buf ), $ff.pipe_f ) |
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$ff.frame + 1 |
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if $ff.max_frames && $ff.frame >= $ff.max_frames |
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{ |
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fputs( "FFmpeg export stop\n" ) |
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ret( 1 ) |
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} |
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} |
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ret( 0 ) |
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}
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