[FFmpeg-devel] [PATCH 2/2] avcodec/libutvideodec: Support YUV422P10
Michael Niedermayer
michaelni at gmx.at
Sun Oct 19 14:52:17 CEST 2014
Based on ConvertToPlanar() from libutvideo
libutvideo sadly does not seem to support exporting its internal planar buffers
Signed-off-by: Michael Niedermayer <michaelni at gmx.at>
---
libavcodec/libutvideodec.cpp | 55 +++++++++++++++++++++++++++++++++++++++++-
1 file changed, 54 insertions(+), 1 deletion(-)
diff --git a/libavcodec/libutvideodec.cpp b/libavcodec/libutvideodec.cpp
index 36dc952..f76a53a 100644
--- a/libavcodec/libutvideodec.cpp
+++ b/libavcodec/libutvideodec.cpp
@@ -39,7 +39,7 @@ static av_cold int utvideo_decode_init(AVCodecContext *avctx)
int format;
int begin_ret;
- if (avctx->extradata_size != 4*4) {
+ if (avctx->extradata_size != 16 && avctx->extradata_size != 8 ) {
av_log(avctx, AV_LOG_ERROR, "Extradata size (%d) mismatch.\n", avctx->extradata_size);
return -1;
}
@@ -80,6 +80,12 @@ static av_cold int utvideo_decode_init(AVCodecContext *avctx)
avctx->pix_fmt = AV_PIX_FMT_RGB32;
format = UTVF_NFCC_BGRA_BU;
break;
+#ifdef UTVF_UQY2
+ case MKTAG('U', 'Q', 'Y', '2'):
+ avctx->pix_fmt = AV_PIX_FMT_YUV422P10;
+ format = UTVF_v210;
+ break;
+#endif
default:
av_log(avctx, AV_LOG_ERROR,
"Not a Ut Video FOURCC: %X\n", avctx->codec_tag);
@@ -88,6 +94,8 @@ static av_cold int utvideo_decode_init(AVCodecContext *avctx)
/* Only allocate the buffer once */
utv->buf_size = avpicture_get_size(avctx->pix_fmt, avctx->width, avctx->height);
+ if (format == UTVF_v210)
+ utv->buf_size += avctx->height * ((avctx->width + 47) / 48) * 128;
utv->buffer = (uint8_t *)av_malloc(utv->buf_size * sizeof(uint8_t));
if (utv->buffer == NULL) {
@@ -155,6 +163,51 @@ static int utvideo_decode_frame(AVCodecContext *avctx, void *data,
pic->linesize[0] = w * 2;
pic->data[0] = utv->buffer;
break;
+ case AV_PIX_FMT_YUV422P10: {
+ uint16_t *y, *u, *v;
+ int i,j;
+ int linesize = ((w + 47) / 48) * 128;
+
+ pic->linesize[0] = w * 2;
+ pic->linesize[1] =
+ pic->linesize[2] = w;
+ pic->data[0] = utv->buffer + linesize * h;
+ pic->data[1] = pic->data[0] + h*pic->linesize[0];
+ pic->data[2] = pic->data[1] + h*pic->linesize[1];
+ y = (uint16_t*)pic->data[0];
+ u = (uint16_t*)pic->data[1];
+ v = (uint16_t*)pic->data[2];
+ for (j = 0; j < h; j++) {
+ const uint8_t *in = utv->buffer + j * linesize;
+
+ for (i = 0; i + 1 < w; i += 6, in += 4) {
+ *u++ = (AV_RL32(in+0) ) & 0x3FF;
+ *y++ = (AV_RL32(in+0)>>10) & 0x3FF;
+ *v++ = (AV_RL32(in+0)>>20) & 0x3FF;
+ *y++ = (AV_RL32(in+4) ) & 0x3FF;
+ in += 4;
+
+ if (i + 3 >= w)
+ break;
+
+ *u++ = (AV_RL32(in+0)>>10) & 0x3FF;
+ *y++ = (AV_RL32(in+0)>>20) & 0x3FF;
+ *v++ = (AV_RL32(in+4) ) & 0x3FF;
+ *y++ = (AV_RL32(in+4)>>10) & 0x3FF;
+ in += 4;
+
+ if (i + 5 >= w)
+ break;
+
+ *u++ = (AV_RL32(in+0)>>20) & 0x3FF;
+ *y++ = (AV_RL32(in+4) ) & 0x3FF;
+ *v++ = (AV_RL32(in+4)>>10) & 0x3FF;
+ *y++ = (AV_RL32(in+4)>>20) & 0x3FF;
+ in += 4;
+ }
+ }
+ break;
+ }
case AV_PIX_FMT_BGR24:
case AV_PIX_FMT_RGB32:
/* Make the linesize negative, since Ut Video uses bottom-up BGR */
--
1.7.9.5
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