C++ (Cpp) MAKE_AVIUTL_PITCH Examples

Example #1

File: dummy_input.c Project: myrsloik/L-SMASH-Works

static int get_first_video_track( lsmash_handler_t *h, video_option_t *opt )
{
    if( h->audio_pcm_sample_count == 0 || h->audio_format.Format.nSamplesPerSec == 0 )
        return -1;  /* Only available if audio stream is present. */
    if( opt->dummy.framerate_den == 0 )
        return -1;
    h->framerate_num = opt->dummy.framerate_num;
    h->framerate_den = opt->dummy.framerate_den;
    h->video_sample_count = ((uint64_t)h->framerate_num * h->audio_pcm_sample_count - 1)
                            / ((uint64_t)h->framerate_den * h->audio_format.Format.nSamplesPerSec) + 1;
    static const struct
    {
        int                   pixel_size;
        output_colorspace_tag compression;
    } colorspace_table[3] =
    {
        { YUY2_SIZE,  OUTPUT_TAG_YUY2 },
        { RGB24_SIZE, OUTPUT_TAG_RGB  },
        { YC48_SIZE,  OUTPUT_TAG_YC48 }
    };
    int linesize = MAKE_AVIUTL_PITCH( opt->dummy.width * (colorspace_table[ opt->dummy.colorspace ].pixel_size << 3) );
    dummy_handler_t *hp = (dummy_handler_t *)h->video_private;
    hp->dummy_size = linesize * opt->dummy.height;
    if( hp->dummy_size <= 0 )
        return -1;
    hp->dummy_data = lw_malloc_zero( hp->dummy_size );
    if( !hp->dummy_data )
        return -1;
    uint8_t *pic = hp->dummy_data;
    switch( colorspace_table[ opt->dummy.colorspace ].compression )
    {
    case OUTPUT_TAG_YC48 :
    case OUTPUT_TAG_RGB :
        break;
    case OUTPUT_TAG_YUY2 :
        for( int i = 0; i < opt->dummy.height; i++ )
        {
            for( int j = 0; j < linesize; j += 2 )
            {
                pic[j    ] = 0;
                pic[j + 1] = 128;
            }
            pic += linesize;
        }
        break;
    default :
        lw_freep( &hp->dummy_data );
        return -1;
    }
    /* BITMAPINFOHEADER */
    h->video_format.biSize        = sizeof( BITMAPINFOHEADER );
    h->video_format.biWidth       = opt->dummy.width;
    h->video_format.biHeight      = opt->dummy.height;
    h->video_format.biBitCount    = colorspace_table[ opt->dummy.colorspace ].pixel_size << 3;
    h->video_format.biCompression = colorspace_table[ opt->dummy.colorspace ].compression;
    return 0;
}

Example #2

File: avs_input.c Project: eric888a/L-SMASH-Works

static int read_video( lsmash_handler_t *h, int sample_number, void *buf )
{
    avs_handler_t *hp = (avs_handler_t *)h->video_private;
    int buf_linesize = MAKE_AVIUTL_PITCH( hp->vi->width * avs_bits_per_pixel( hp->vi ) );
    AVS_VideoFrame *frame = hp->func.avs_get_frame( hp->clip, sample_number );
    if( hp->func.avs_clip_get_error( hp->clip ) )
        return 0;
    hp->func.avs_bit_blt( hp->env, buf, buf_linesize, avs_get_read_ptr( frame ),
                          avs_get_pitch( frame ), avs_get_row_size( frame ), hp->vi->height );
    hp->func.avs_release_video_frame( frame );
    return avs_bmp_size( hp->vi );
}