Add YV12 support, patch by Steve Lhomme % steve P lhomme A free P fr %

Original thread:
Date: Aug 17, 2006 5:45 PM
Subject: Re: [Ffmpeg-devel] [PATCH] AVISynth support

Originally committed as revision 6018 to svn://svn.ffmpeg.org/ffmpeg/trunk

libavcodec/raw.c

@@ -38,6 +38,7 @@ typedef struct PixelFormatTag {
 const PixelFormatTag pixelFormatTags[] = {
     { PIX_FMT_YUV420P, MKTAG('I', '4', '2', '0') }, /* Planar formats */
     { PIX_FMT_YUV420P, MKTAG('I', 'Y', 'U', 'V') },
+    { PIX_FMT_YUV420P, MKTAG('Y', 'V', '1', '2') },
     { PIX_FMT_YUV410P, MKTAG('Y', 'U', 'V', '9') },
     { PIX_FMT_YUV411P, MKTAG('Y', '4', '1', 'B') },
     { PIX_FMT_YUV422P, MKTAG('Y', '4', '2', 'B') },
@@ -141,6 +142,15 @@ static int raw_decode(AVCodecContext *avctx,
     }
 
     flip(avctx, picture);
+
+    if (avctx->codec_tag == MKTAG('Y', 'V', '1', '2'))
+    {
+        // swap fields
+        unsigned char *tmp = picture->data[1];
+        picture->data[1] = picture->data[2];
+        picture->data[2] = tmp;
+    }
+
     *data_size = sizeof(AVPicture);
     return buf_size;
 }

libavformat/riff.c

@@ -106,6 +106,7 @@ const CodecTag codec_bmp_tags[] = {
     { CODEC_ID_RAWVIDEO, MKTAG('I', '4', '2', '0') },
     { CODEC_ID_RAWVIDEO, MKTAG('Y', 'U', 'Y', '2') },
     { CODEC_ID_RAWVIDEO, MKTAG('Y', '4', '2', '2') },
+    { CODEC_ID_RAWVIDEO, MKTAG('Y', 'V', '1', '2') },
     { CODEC_ID_RAWVIDEO, MKTAG('U', 'Y', 'V', 'Y') },
     { CODEC_ID_RAWVIDEO, MKTAG('I', 'Y', 'U', 'V') },
     { CODEC_ID_INDEO3, MKTAG('I', 'V', '3', '1') },