static VSFrameRef *new_output_video_frame
(
vs_video_output_handler_t *vs_vohp,
const AVFrame *av_frame,
enum AVPixelFormat *output_pixel_format,
int *enable_scaler,
int input_pix_fmt_change,
VSFrameContext *frame_ctx,
VSCore *core,
const VSAPI *vsapi
)
{
if( vs_vohp->variable_info )
{
if( !av_frame->opaque
&& determine_colorspace_conversion( vs_vohp, av_frame->format, output_pixel_format, enable_scaler ) < 0 )
goto fail;
const VSFormat *vs_format = vsapi->getFormatPreset( vs_vohp->vs_output_pixel_format, core );
return vsapi->newVideoFrame( vs_format, av_frame->width, av_frame->height, NULL, core );
}
else
{
if( !av_frame->opaque
&& input_pix_fmt_change
&& determine_colorspace_conversion( vs_vohp, av_frame->format, output_pixel_format, enable_scaler ) < 0 )
goto fail;
return vsapi->copyFrame( vs_vohp->background_frame, core );
}
fail:
if( frame_ctx )
vsapi->setFilterError( "lsmas: failed to determine colorspace conversion.", frame_ctx );
return NULL;
}
VSFrameRef *new_output_video_frame
(
lw_video_output_handler_t *vohp,
int width,
int height,
enum AVPixelFormat pixel_format,
VSFrameContext *frame_ctx,
VSCore *core,
const VSAPI *vsapi
)
{
vs_video_output_handler_t *vs_vohp = (vs_video_output_handler_t *)vohp->private_handler;
VSFrameRef *vs_frame;
if( vs_vohp->variable_info )
{
if( determine_colorspace_conversion( vohp, pixel_format ) )
{
if( frame_ctx )
vsapi->setFilterError( "lsmas: failed to determin colorspace conversion.", frame_ctx );
return NULL;
}
const VSFormat *vs_format = vsapi->getFormatPreset( vs_vohp->vs_output_pixel_format, core );
vs_frame = vsapi->newVideoFrame( vs_format, width, height, NULL, core );
}
else
{
if( pixel_format != vohp->scaler.input_pixel_format
&& determine_colorspace_conversion( vohp, pixel_format ) )
{
if( frame_ctx )
vsapi->setFilterError( "lsmas: failed to determin colorspace conversion.", frame_ctx );
return NULL;
}
vs_frame = vsapi->copyFrame( vs_vohp->background_frame, core );
}
return vs_frame;
}
int vs_setup_video_rendering
(
lw_video_output_handler_t *lw_vohp,
AVCodecContext *ctx,
VSVideoInfo *vi,
VSMap *out,
int width,
int height
)
{
vs_video_output_handler_t *vs_vohp = (vs_video_output_handler_t *)lw_vohp->private_handler;
const VSAPI *vsapi = vs_vohp->vsapi;
enum AVPixelFormat output_pixel_format;
int enable_scaler;
if( determine_colorspace_conversion( vs_vohp, ctx->pix_fmt, &output_pixel_format, &enable_scaler ) )
{
set_error_on_init( out, vsapi, "lsmas: %s is not supported", av_get_pix_fmt_name( ctx->pix_fmt ) );
return -1;
}
vs_vohp->direct_rendering &= vs_check_dr_available( ctx, ctx->pix_fmt );
int (*dr_get_buffer)( struct AVCodecContext *, AVFrame *, int ) = vs_vohp->direct_rendering ? vs_video_get_buffer : NULL;
setup_video_rendering( lw_vohp, enable_scaler, SWS_FAST_BILINEAR,
width, height, output_pixel_format,
ctx, dr_get_buffer );
if( vs_vohp->variable_info )
{
vi->format = NULL;
vi->width = 0;
vi->height = 0;
/* Unused */
//lw_vohp->output_width = 0;
//lw_vohp->output_height = 0;
}
else
{
vi->format = vsapi->getFormatPreset( vs_vohp->vs_output_pixel_format, vs_vohp->core );
vi->width = lw_vohp->output_width;
vi->height = lw_vohp->output_height;
vs_vohp->background_frame = vsapi->newVideoFrame( vi->format, vi->width, vi->height, NULL, vs_vohp->core );
if( !vs_vohp->background_frame )
{
set_error_on_init( out, vsapi, "lsmas: failed to allocate memory for the background black frame data." );
return -1;
}
vs_vohp->make_black_background( vs_vohp->background_frame, vsapi );
}
return 0;
}
