[FFmpeg-devel] [PATCH] Implement avfilter_colorspaces()
Michael Niedermayer
michaelni
Tue Dec 29 14:58:49 CET 2009
On Sat, Nov 07, 2009 at 02:28:38AM +0100, Stefano Sabatini wrote:
> Hi all,
>
> this patch has a long story:
> http://thread.gmane.org/gmane.comp.video.ffmpeg.devel/83733
>
> Now that pixdescs are finally completed then this function can finally
> be implemented.
>
> In attachment an example of how this function can be used to simplify
> filters code.
[...]
> @@ -35,38 +36,18 @@
> int hsub, vsub; ///< chroma subsampling
> } CropContext;
>
> +static int select_colorspace(AVFilterContext *ctx, enum PixelFormat pix_fmt)
> +{
> + int ret = !(av_pix_fmt_descriptors[pix_fmt].flags & (PIX_FMT_BITSTREAM|PIX_FMT_HWACCEL));
> + if (ret)
> + av_log(ctx, AV_LOG_INFO, "%s: Selected format: %s\n", __func__, av_pix_fmt_descriptors[pix_fmt].name);
> + return ret;
> +}
> +
> static int query_formats(AVFilterContext *ctx)
> {
> - static const enum PixelFormat pix_fmts[] = {
> - PIX_FMT_RGB48BE, PIX_FMT_RGB48LE,
> - PIX_FMT_ARGB, PIX_FMT_RGBA,
> - PIX_FMT_ABGR, PIX_FMT_BGRA,
> - PIX_FMT_RGB24, PIX_FMT_BGR24,
> - PIX_FMT_RGB565BE, PIX_FMT_RGB565LE,
> - PIX_FMT_RGB555BE, PIX_FMT_RGB555LE,
> - PIX_FMT_BGR565BE, PIX_FMT_BGR565LE,
> - PIX_FMT_BGR555BE, PIX_FMT_BGR555LE,
> - PIX_FMT_GRAY16BE, PIX_FMT_GRAY16LE,
> - PIX_FMT_YUV420P16LE, PIX_FMT_YUV420P16BE,
> - PIX_FMT_YUV422P16LE, PIX_FMT_YUV422P16BE,
> - PIX_FMT_YUV444P16LE, PIX_FMT_YUV444P16BE,
> - PIX_FMT_YUV444P, PIX_FMT_YUV422P,
> - PIX_FMT_YUV420P, PIX_FMT_YUV411P,
> - PIX_FMT_YUV410P, PIX_FMT_YUV440P,
> - PIX_FMT_YUVJ444P, PIX_FMT_YUVJ422P,
> - PIX_FMT_YUVJ420P, PIX_FMT_YUVJ440P,
> - PIX_FMT_YUVA420P,
> - PIX_FMT_NV12, PIX_FMT_NV21,
> - PIX_FMT_YUYV422, PIX_FMT_UYVY422,
> - PIX_FMT_UYYVYY411,
> - PIX_FMT_RGB8, PIX_FMT_BGR8,
> - PIX_FMT_RGB4_BYTE, PIX_FMT_BGR4_BYTE,
> - PIX_FMT_PAL8, PIX_FMT_GRAY8,
> - PIX_FMT_NONE
> - };
> + avfilter_set_common_formats(ctx, avfilter_colorspaces(ctx, select_colorspace));
for (pix_fmt = 0; pix_fmt < PIX_FMT_NB; pix_fmt++)
if (!(av_pix_fmt_descriptors[pix_fmt].flags & (PIX_FMT_BITSTREAM|PIX_FMT_HWACCEL)))
avfilter_add_colorspace(formats, pix_fmt);
no function pointers, fewer lines of code
[...]
--
Michael GnuPG fingerprint: 9FF2128B147EF6730BADF133611EC787040B0FAB
I have often repented speaking, but never of holding my tongue.
-- Xenocrates
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