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avcodec/libutvideodec: Support YUV422P10

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Based on ConvertToPlanar() from libutvideo
libutvideo sadly does not seem to support exporting its internal planar buffers

Reviewed-by: Benoit Fouet <benoit.fouet@free.fr>
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
This commit is contained in:
Michael Niedermayer 2014-10-19 14:34:09 +02:00
parent 4ba5420e4d
commit 59a4792830
1 changed files with 59 additions and 1 deletions
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60
libavcodec/libutvideodec.cpp
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@ -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; // the linesize used by the decoder, this does not seem to be exported
utv->buffer = (uint8_t *)av_malloc(utv->buf_size * sizeof(uint8_t));
if (utv->buffer == NULL) {
@ -155,6 +163,56 @@ 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) {
unsigned a,b;
a = AV_RL32(in);
in += 4;
b = AV_RL32(in);
*u++ = (a ) & 0x3FF;
*y++ = (a>>10) & 0x3FF;
*v++ = (a>>20) & 0x3FF;
*y++ = (b ) & 0x3FF;
if (i + 3 >= w)
break;
in += 4;
a = AV_RL32(in);
*u++ = (b>>10) & 0x3FF;
*y++ = (b>>20) & 0x3FF;
*v++ = (a ) & 0x3FF;
*y++ = (a>>10) & 0x3FF;
if (i + 5 >= w)
break;
in += 4;
b = AV_RL32(in);
*u++ = (a>>20) & 0x3FF;
*y++ = (b ) & 0x3FF;
*v++ = (b>>10) & 0x3FF;
*y++ = (b>>20) & 0x3FF;
}
}
break;
}
case AV_PIX_FMT_BGR24:
case AV_PIX_FMT_RGB32:
/* Make the linesize negative, since Ut Video uses bottom-up BGR */