[FFmpeg-cvslog] avcodec/mjpegdec: Support some subsampled GBR variants

[Michael Niedermayer]

ffmpeg | branch: master | Michael Niedermayer <michaelni at gmx.at> | Tue Nov 18 05:10:21 2014 +0100| [4243415741e335b92feb757d5514a2cdfbb63cc4] | committer: Michael Niedermayer

avcodec/mjpegdec: Support some subsampled  GBR variants

Fixes Ticket4045

Signed-off-by: Michael Niedermayer <michaelni at gmx.at>

> http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=4243415741e335b92feb757d5514a2cdfbb63cc4
---

 libavcodec/mjpegdec.c |   30 +++++++++++++++++++++++-------
 1 file changed, 23 insertions(+), 7 deletions(-)

diff --git a/libavcodec/mjpegdec.c b/libavcodec/mjpegdec.c
index b350f44..c4d4d8b 100644
--- a/libavcodec/mjpegdec.c
+++ b/libavcodec/mjpegdec.c
@@ -492,15 +492,29 @@ int ff_mjpeg_decode_sof(MJpegDecodeContext *s)
     case 0x14121200:
     case 0x22211100:
     case 0x22112100:
-        if (s->bits <= 8) s->avctx->pix_fmt = s->cs_itu601 ? AV_PIX_FMT_YUV440P : AV_PIX_FMT_YUVJ440P;
-        else
-            goto unk_pixfmt;
-        s->avctx->color_range = s->cs_itu601 ? AVCOL_RANGE_MPEG : AVCOL_RANGE_JPEG;
+        if (s->component_id[0] == 'Q' && s->component_id[1] == 'F' && s->component_id[2] == 'A') {
+            if (s->bits <= 8) s->avctx->pix_fmt = AV_PIX_FMT_GBRP;
+            else
+                goto unk_pixfmt;
+            s->upscale_v |= 3;
+        } else {
+            if (s->bits <= 8) s->avctx->pix_fmt = s->cs_itu601 ? AV_PIX_FMT_YUV440P : AV_PIX_FMT_YUVJ440P;
+            else
+                goto unk_pixfmt;
+            s->avctx->color_range = s->cs_itu601 ? AVCOL_RANGE_MPEG : AVCOL_RANGE_JPEG;
+        }
         break;
     case 0x21111100:
-        if (s->bits <= 8) s->avctx->pix_fmt = s->cs_itu601 ? AV_PIX_FMT_YUV422P : AV_PIX_FMT_YUVJ422P;
-        else              s->avctx->pix_fmt = AV_PIX_FMT_YUV422P16;
-        s->avctx->color_range = s->cs_itu601 ? AVCOL_RANGE_MPEG : AVCOL_RANGE_JPEG;
+        if (s->component_id[0] == 'Q' && s->component_id[1] == 'F' && s->component_id[2] == 'A') {
+            if (s->bits <= 8) s->avctx->pix_fmt = AV_PIX_FMT_GBRP;
+            else
+                goto unk_pixfmt;
+            s->upscale_h |= 3;
+        } else {
+            if (s->bits <= 8) s->avctx->pix_fmt = s->cs_itu601 ? AV_PIX_FMT_YUV422P : AV_PIX_FMT_YUVJ422P;
+            else              s->avctx->pix_fmt = AV_PIX_FMT_YUV422P16;
+            s->avctx->color_range = s->cs_itu601 ? AVCOL_RANGE_MPEG : AVCOL_RANGE_JPEG;
+        }
         break;
     case 0x22121100:
     case 0x22111200:
@@ -2094,6 +2108,7 @@ the_end:
                    avctx->pix_fmt == AV_PIX_FMT_YUVJ420P ||
                    avctx->pix_fmt == AV_PIX_FMT_YUV420P  ||
                    avctx->pix_fmt == AV_PIX_FMT_YUV420P16||
+                   avctx->pix_fmt == AV_PIX_FMT_GBRP     ||
                    avctx->pix_fmt == AV_PIX_FMT_GBRAP
                   );
         avcodec_get_chroma_sub_sample(s->avctx->pix_fmt, &hshift, &vshift);
@@ -2132,6 +2147,7 @@ the_end:
                    avctx->pix_fmt == AV_PIX_FMT_YUVJ420P ||
                    avctx->pix_fmt == AV_PIX_FMT_YUV420P  ||
                    avctx->pix_fmt == AV_PIX_FMT_YUVA444P ||
+                   avctx->pix_fmt == AV_PIX_FMT_GBRP     ||
                    avctx->pix_fmt == AV_PIX_FMT_GBRAP
                    );
         avcodec_get_chroma_sub_sample(s->avctx->pix_fmt, &hshift, &vshift);