Re: [FFmpeg-devel] [PATCH] avcodec/dvdec: correctly decode bottom mb row in 1080i field mode
> On Nov 2, 2019, at 11:07 PM, Carl Eugen Hoyos wrote:
>
> Am Sa., 2. Nov. 2019 um 20:02 Uhr schrieb Baptiste Coudurier
> :
>>
>> On Wed, Sep 11, 2019 at 12:29 PM Baptiste Coudurier <
>> baptiste.coudur...@gmail.com> wrote:
>>
>>> ---
>>> libavcodec/dv.h| 2 ++
>>> libavcodec/dvdec.c | 90 +++---
>>> 2 files changed, 72 insertions(+), 20 deletions(-)
>>>
>>> diff --git a/libavcodec/dv.h b/libavcodec/dv.h
>>> index 0e97bb200e..7ef5b7c552 100644
>>> --- a/libavcodec/dv.h
>>> +++ b/libavcodec/dv.h
>>> @@ -31,6 +31,7 @@
>>> #include "dv_profile.h"
>>> #include "me_cmp.h"
>>> #include "vlc.h"
>>> +#include "idctdsp.h"
>>>
>>> typedef struct DVwork_chunk {
>>> uint16_t buf_offset;
>>> @@ -52,6 +53,7 @@ typedef struct DVVideoContext {
>>> me_cmp_func ildct_cmp;
>>> DVwork_chunk work_chunks[4 * 12 * 27];
>>> uint32_t idct_factor[2 * 4 * 16 * 64];
>>> +IDCTDSPContext idsp;
>>>
>>> int quant_deadzone;
>>> } DVVideoContext;
>>> diff --git a/libavcodec/dvdec.c b/libavcodec/dvdec.c
>>> index 89864f2edc..4345cd9e29 100644
>>> --- a/libavcodec/dvdec.c
>>> +++ b/libavcodec/dvdec.c
>>> @@ -45,7 +45,6 @@
>>> #include "dv_profile_internal.h"
>>> #include "dvdata.h"
>>> #include "get_bits.h"
>>> -#include "idctdsp.h"
>>> #include "internal.h"
>>> #include "put_bits.h"
>>> #include "simple_idct.h"
>>> @@ -177,24 +176,22 @@ static void dv_init_weight_tables(DVVideoContext
>>> *ctx, const AVDVProfile *d)
>>> static av_cold int dvvideo_decode_init(AVCodecContext *avctx)
>>> {
>>> DVVideoContext *s = avctx->priv_data;
>>> -IDCTDSPContext idsp;
>>> int i;
>>>
>>> -memset(&idsp,0, sizeof(idsp));
>>> -ff_idctdsp_init(&idsp, avctx);
>>> +ff_idctdsp_init(&s->idsp, avctx);
>>>
>>> for (i = 0; i < 64; i++)
>>> -s->dv_zigzag[0][i] = idsp.idct_permutation[ff_zigzag_direct[i]];
>>> +s->dv_zigzag[0][i] =
>>> s->idsp.idct_permutation[ff_zigzag_direct[i]];
>>>
>>> if (avctx->lowres){
>>> for (i = 0; i < 64; i++){
>>> int j = ff_dv_zigzag248_direct[i];
>>> -s->dv_zigzag[1][i] = idsp.idct_permutation[(j & 7) + (j & 8)
>>> * 4 + (j & 48) / 2];
>>> +s->dv_zigzag[1][i] = s->idsp.idct_permutation[(j & 7) + (j &
>>> 8) * 4 + (j & 48) / 2];
>>> }
>>> }else
>>> memcpy(s->dv_zigzag[1], ff_dv_zigzag248_direct,
>>> sizeof(s->dv_zigzag[1]));
>>>
>>> -s->idct_put[0] = idsp.idct_put;
>>> +s->idct_put[0] = s->idsp.idct_put;
>>> s->idct_put[1] = ff_simple_idct248_put;
>>>
>>> return ff_dvvideo_init(avctx);
>>> @@ -272,6 +269,49 @@ static inline void bit_copy(PutBitContext *pb,
>>> GetBitContext *gb)
>>> put_bits(pb, bits_left, get_bits(gb, bits_left));
>>> }
>>>
>>> +static av_always_inline void put_block_8x4(int16_t *block, uint8_t
>>> *restrict p, int stride)
>>> +{
>>> +int i, j;
>>> +const uint8_t *cm = ff_crop_tab + MAX_NEG_CROP;
>>> +
>>> +for (i = 0; i < 4; i++) {
>>> +for (j = 0; j < 8; j++)
>>> +p[j] = cm[block[j]];
>>> +block += 8;
>>> +p += stride;
>>> +}
>>> +}
>>> +
>>> +static void dv100_idct_put_last_row_field_chroma(DVVideoContext *s,
>>> uint8_t *data,
>>> + int stride, int16_t
>>> *blocks)
>>> +{
>>> +s->idsp.idct(blocks + 0*64);
>>> +s->idsp.idct(blocks + 1*64);
>>> +
>>> +put_block_8x4(blocks+0*64, data, stride<<1);
>>> +put_block_8x4(blocks+0*64 + 4*8, data + 8, stride<<1);
>>> +put_block_8x4(blocks+1*64, data + stride, stride<<1);
>>> +put_block_8x4(blocks+1*64 + 4*8, data + 8 + stride, stride<<1);
>>> +}
>>> +
>>> +static void dv100_idct_put_last_row_field_luma(DVVideoContext *s, uint8_t
>>> *data,
>>> + int stride, int16_t
>>> *blocks)
>>> +{
>>> +s->idsp.idct(blocks + 0*64);
>>> +s->idsp.idct(blocks + 1*64);
>>> +s->idsp.idct(blocks + 2*64);
>>> +s->idsp.idct(blocks + 3*64);
>>> +
>>> +put_block_8x4(blocks+0*64, data, stride<<1);
>>> +put_block_8x4(blocks+0*64 + 4*8, data + 16, stride<<1);
>>> +put_block_8x4(blocks+1*64, data + 8, stride<<1);
>>> +put_block_8x4(blocks+1*64 + 4*8, data + 24, stride<<1);
>>> +put_block_8x4(blocks+2*64, data + stride, stride<<1);
>>> +put_block_8x4(blocks+2*64 + 4*8, data + 16 + stride, stride<<1);
>>> +put_block_8x4(blocks+3*64, data + 8 + stride, stride<<1);
>>> +put_block_8x4(blocks+3*64 + 4*8, data + 24 + stride, stride<<1);
>>> +}
>>> +
>>> /* mb_x and mb_y are in units of 8 pixels */
>>> static int dv_decode_video_segment(AVCodecContext *avctx, void *arg)
>>> {
>>> @@ -443,14 +483,18 @@ retry:
>>> }
>>> y_ptr= s->frame->data[0] +
>>>((mb_y * s->frame->linesize[0] + mb_x) <<
>>> log2_blocksize);
>>> -linesize = s->fram
Re: [FFmpeg-devel] [PATCH] avcodec/dvdec: correctly decode bottom mb row in 1080i field mode
Am Sa., 2. Nov. 2019 um 20:02 Uhr schrieb Baptiste Coudurier
:
>
> On Wed, Sep 11, 2019 at 12:29 PM Baptiste Coudurier <
> baptiste.coudur...@gmail.com> wrote:
>
> > ---
> > libavcodec/dv.h| 2 ++
> > libavcodec/dvdec.c | 90 +++---
> > 2 files changed, 72 insertions(+), 20 deletions(-)
> >
> > diff --git a/libavcodec/dv.h b/libavcodec/dv.h
> > index 0e97bb200e..7ef5b7c552 100644
> > --- a/libavcodec/dv.h
> > +++ b/libavcodec/dv.h
> > @@ -31,6 +31,7 @@
> > #include "dv_profile.h"
> > #include "me_cmp.h"
> > #include "vlc.h"
> > +#include "idctdsp.h"
> >
> > typedef struct DVwork_chunk {
> > uint16_t buf_offset;
> > @@ -52,6 +53,7 @@ typedef struct DVVideoContext {
> > me_cmp_func ildct_cmp;
> > DVwork_chunk work_chunks[4 * 12 * 27];
> > uint32_t idct_factor[2 * 4 * 16 * 64];
> > +IDCTDSPContext idsp;
> >
> > int quant_deadzone;
> > } DVVideoContext;
> > diff --git a/libavcodec/dvdec.c b/libavcodec/dvdec.c
> > index 89864f2edc..4345cd9e29 100644
> > --- a/libavcodec/dvdec.c
> > +++ b/libavcodec/dvdec.c
> > @@ -45,7 +45,6 @@
> > #include "dv_profile_internal.h"
> > #include "dvdata.h"
> > #include "get_bits.h"
> > -#include "idctdsp.h"
> > #include "internal.h"
> > #include "put_bits.h"
> > #include "simple_idct.h"
> > @@ -177,24 +176,22 @@ static void dv_init_weight_tables(DVVideoContext
> > *ctx, const AVDVProfile *d)
> > static av_cold int dvvideo_decode_init(AVCodecContext *avctx)
> > {
> > DVVideoContext *s = avctx->priv_data;
> > -IDCTDSPContext idsp;
> > int i;
> >
> > -memset(&idsp,0, sizeof(idsp));
> > -ff_idctdsp_init(&idsp, avctx);
> > +ff_idctdsp_init(&s->idsp, avctx);
> >
> > for (i = 0; i < 64; i++)
> > -s->dv_zigzag[0][i] = idsp.idct_permutation[ff_zigzag_direct[i]];
> > +s->dv_zigzag[0][i] =
> > s->idsp.idct_permutation[ff_zigzag_direct[i]];
> >
> > if (avctx->lowres){
> > for (i = 0; i < 64; i++){
> > int j = ff_dv_zigzag248_direct[i];
> > -s->dv_zigzag[1][i] = idsp.idct_permutation[(j & 7) + (j & 8)
> > * 4 + (j & 48) / 2];
> > +s->dv_zigzag[1][i] = s->idsp.idct_permutation[(j & 7) + (j &
> > 8) * 4 + (j & 48) / 2];
> > }
> > }else
> > memcpy(s->dv_zigzag[1], ff_dv_zigzag248_direct,
> > sizeof(s->dv_zigzag[1]));
> >
> > -s->idct_put[0] = idsp.idct_put;
> > +s->idct_put[0] = s->idsp.idct_put;
> > s->idct_put[1] = ff_simple_idct248_put;
> >
> > return ff_dvvideo_init(avctx);
> > @@ -272,6 +269,49 @@ static inline void bit_copy(PutBitContext *pb,
> > GetBitContext *gb)
> > put_bits(pb, bits_left, get_bits(gb, bits_left));
> > }
> >
> > +static av_always_inline void put_block_8x4(int16_t *block, uint8_t
> > *restrict p, int stride)
> > +{
> > +int i, j;
> > +const uint8_t *cm = ff_crop_tab + MAX_NEG_CROP;
> > +
> > +for (i = 0; i < 4; i++) {
> > +for (j = 0; j < 8; j++)
> > +p[j] = cm[block[j]];
> > +block += 8;
> > +p += stride;
> > +}
> > +}
> > +
> > +static void dv100_idct_put_last_row_field_chroma(DVVideoContext *s,
> > uint8_t *data,
> > + int stride, int16_t
> > *blocks)
> > +{
> > +s->idsp.idct(blocks + 0*64);
> > +s->idsp.idct(blocks + 1*64);
> > +
> > +put_block_8x4(blocks+0*64, data, stride<<1);
> > +put_block_8x4(blocks+0*64 + 4*8, data + 8, stride<<1);
> > +put_block_8x4(blocks+1*64, data + stride, stride<<1);
> > +put_block_8x4(blocks+1*64 + 4*8, data + 8 + stride, stride<<1);
> > +}
> > +
> > +static void dv100_idct_put_last_row_field_luma(DVVideoContext *s, uint8_t
> > *data,
> > + int stride, int16_t
> > *blocks)
> > +{
> > +s->idsp.idct(blocks + 0*64);
> > +s->idsp.idct(blocks + 1*64);
> > +s->idsp.idct(blocks + 2*64);
> > +s->idsp.idct(blocks + 3*64);
> > +
> > +put_block_8x4(blocks+0*64, data, stride<<1);
> > +put_block_8x4(blocks+0*64 + 4*8, data + 16, stride<<1);
> > +put_block_8x4(blocks+1*64, data + 8, stride<<1);
> > +put_block_8x4(blocks+1*64 + 4*8, data + 24, stride<<1);
> > +put_block_8x4(blocks+2*64, data + stride, stride<<1);
> > +put_block_8x4(blocks+2*64 + 4*8, data + 16 + stride, stride<<1);
> > +put_block_8x4(blocks+3*64, data + 8 + stride, stride<<1);
> > +put_block_8x4(blocks+3*64 + 4*8, data + 24 + stride, stride<<1);
> > +}
> > +
> > /* mb_x and mb_y are in units of 8 pixels */
> > static int dv_decode_video_segment(AVCodecContext *avctx, void *arg)
> > {
> > @@ -443,14 +483,18 @@ retry:
> > }
> > y_ptr= s->frame->data[0] +
> > ((mb_y * s->frame->linesize[0] + mb_x) <<
> > log2_blocksize);
> > -linesize = s->frame->linesize[0] << is_field_mode[mb_inde
Re: [FFmpeg-devel] [PATCH] avcodec/dvdec: correctly decode bottom mb row in 1080i field mode
On Wed, Sep 11, 2019 at 12:29 PM Baptiste Coudurier <
baptiste.coudur...@gmail.com> wrote:
> ---
> libavcodec/dv.h| 2 ++
> libavcodec/dvdec.c | 90 +++---
> 2 files changed, 72 insertions(+), 20 deletions(-)
>
> diff --git a/libavcodec/dv.h b/libavcodec/dv.h
> index 0e97bb200e..7ef5b7c552 100644
> --- a/libavcodec/dv.h
> +++ b/libavcodec/dv.h
> @@ -31,6 +31,7 @@
> #include "dv_profile.h"
> #include "me_cmp.h"
> #include "vlc.h"
> +#include "idctdsp.h"
>
> typedef struct DVwork_chunk {
> uint16_t buf_offset;
> @@ -52,6 +53,7 @@ typedef struct DVVideoContext {
> me_cmp_func ildct_cmp;
> DVwork_chunk work_chunks[4 * 12 * 27];
> uint32_t idct_factor[2 * 4 * 16 * 64];
> +IDCTDSPContext idsp;
>
> int quant_deadzone;
> } DVVideoContext;
> diff --git a/libavcodec/dvdec.c b/libavcodec/dvdec.c
> index 89864f2edc..4345cd9e29 100644
> --- a/libavcodec/dvdec.c
> +++ b/libavcodec/dvdec.c
> @@ -45,7 +45,6 @@
> #include "dv_profile_internal.h"
> #include "dvdata.h"
> #include "get_bits.h"
> -#include "idctdsp.h"
> #include "internal.h"
> #include "put_bits.h"
> #include "simple_idct.h"
> @@ -177,24 +176,22 @@ static void dv_init_weight_tables(DVVideoContext
> *ctx, const AVDVProfile *d)
> static av_cold int dvvideo_decode_init(AVCodecContext *avctx)
> {
> DVVideoContext *s = avctx->priv_data;
> -IDCTDSPContext idsp;
> int i;
>
> -memset(&idsp,0, sizeof(idsp));
> -ff_idctdsp_init(&idsp, avctx);
> +ff_idctdsp_init(&s->idsp, avctx);
>
> for (i = 0; i < 64; i++)
> -s->dv_zigzag[0][i] = idsp.idct_permutation[ff_zigzag_direct[i]];
> +s->dv_zigzag[0][i] =
> s->idsp.idct_permutation[ff_zigzag_direct[i]];
>
> if (avctx->lowres){
> for (i = 0; i < 64; i++){
> int j = ff_dv_zigzag248_direct[i];
> -s->dv_zigzag[1][i] = idsp.idct_permutation[(j & 7) + (j & 8)
> * 4 + (j & 48) / 2];
> +s->dv_zigzag[1][i] = s->idsp.idct_permutation[(j & 7) + (j &
> 8) * 4 + (j & 48) / 2];
> }
> }else
> memcpy(s->dv_zigzag[1], ff_dv_zigzag248_direct,
> sizeof(s->dv_zigzag[1]));
>
> -s->idct_put[0] = idsp.idct_put;
> +s->idct_put[0] = s->idsp.idct_put;
> s->idct_put[1] = ff_simple_idct248_put;
>
> return ff_dvvideo_init(avctx);
> @@ -272,6 +269,49 @@ static inline void bit_copy(PutBitContext *pb,
> GetBitContext *gb)
> put_bits(pb, bits_left, get_bits(gb, bits_left));
> }
>
> +static av_always_inline void put_block_8x4(int16_t *block, uint8_t
> *restrict p, int stride)
> +{
> +int i, j;
> +const uint8_t *cm = ff_crop_tab + MAX_NEG_CROP;
> +
> +for (i = 0; i < 4; i++) {
> +for (j = 0; j < 8; j++)
> +p[j] = cm[block[j]];
> +block += 8;
> +p += stride;
> +}
> +}
> +
> +static void dv100_idct_put_last_row_field_chroma(DVVideoContext *s,
> uint8_t *data,
> + int stride, int16_t
> *blocks)
> +{
> +s->idsp.idct(blocks + 0*64);
> +s->idsp.idct(blocks + 1*64);
> +
> +put_block_8x4(blocks+0*64, data, stride<<1);
> +put_block_8x4(blocks+0*64 + 4*8, data + 8, stride<<1);
> +put_block_8x4(blocks+1*64, data + stride, stride<<1);
> +put_block_8x4(blocks+1*64 + 4*8, data + 8 + stride, stride<<1);
> +}
> +
> +static void dv100_idct_put_last_row_field_luma(DVVideoContext *s, uint8_t
> *data,
> + int stride, int16_t
> *blocks)
> +{
> +s->idsp.idct(blocks + 0*64);
> +s->idsp.idct(blocks + 1*64);
> +s->idsp.idct(blocks + 2*64);
> +s->idsp.idct(blocks + 3*64);
> +
> +put_block_8x4(blocks+0*64, data, stride<<1);
> +put_block_8x4(blocks+0*64 + 4*8, data + 16, stride<<1);
> +put_block_8x4(blocks+1*64, data + 8, stride<<1);
> +put_block_8x4(blocks+1*64 + 4*8, data + 24, stride<<1);
> +put_block_8x4(blocks+2*64, data + stride, stride<<1);
> +put_block_8x4(blocks+2*64 + 4*8, data + 16 + stride, stride<<1);
> +put_block_8x4(blocks+3*64, data + 8 + stride, stride<<1);
> +put_block_8x4(blocks+3*64 + 4*8, data + 24 + stride, stride<<1);
> +}
> +
> /* mb_x and mb_y are in units of 8 pixels */
> static int dv_decode_video_segment(AVCodecContext *avctx, void *arg)
> {
> @@ -443,14 +483,18 @@ retry:
> }
> y_ptr= s->frame->data[0] +
> ((mb_y * s->frame->linesize[0] + mb_x) <<
> log2_blocksize);
> -linesize = s->frame->linesize[0] << is_field_mode[mb_index];
> -mb[0].idct_put(y_ptr, linesize, block + 0 * 64);
> -if (s->sys->video_stype == 4) { /* SD 422 */
> -mb[2].idct_put(y_ptr + (1 << log2_blocksize),
> linesize, block + 2 * 64);
> +if (mb_y == 134 && is_field_mode[mb_index]) {
> +dv100_idct_put_last_row_field_luma(s, y_ptr,
> s->fram
[FFmpeg-devel] [PATCH] avcodec/dvdec: correctly decode bottom mb row in 1080i field mode
---
libavcodec/dv.h| 2 ++
libavcodec/dvdec.c | 90 +++---
2 files changed, 72 insertions(+), 20 deletions(-)
diff --git a/libavcodec/dv.h b/libavcodec/dv.h
index 0e97bb200e..7ef5b7c552 100644
--- a/libavcodec/dv.h
+++ b/libavcodec/dv.h
@@ -31,6 +31,7 @@
#include "dv_profile.h"
#include "me_cmp.h"
#include "vlc.h"
+#include "idctdsp.h"
typedef struct DVwork_chunk {
uint16_t buf_offset;
@@ -52,6 +53,7 @@ typedef struct DVVideoContext {
me_cmp_func ildct_cmp;
DVwork_chunk work_chunks[4 * 12 * 27];
uint32_t idct_factor[2 * 4 * 16 * 64];
+IDCTDSPContext idsp;
int quant_deadzone;
} DVVideoContext;
diff --git a/libavcodec/dvdec.c b/libavcodec/dvdec.c
index 89864f2edc..4345cd9e29 100644
--- a/libavcodec/dvdec.c
+++ b/libavcodec/dvdec.c
@@ -45,7 +45,6 @@
#include "dv_profile_internal.h"
#include "dvdata.h"
#include "get_bits.h"
-#include "idctdsp.h"
#include "internal.h"
#include "put_bits.h"
#include "simple_idct.h"
@@ -177,24 +176,22 @@ static void dv_init_weight_tables(DVVideoContext *ctx,
const AVDVProfile *d)
static av_cold int dvvideo_decode_init(AVCodecContext *avctx)
{
DVVideoContext *s = avctx->priv_data;
-IDCTDSPContext idsp;
int i;
-memset(&idsp,0, sizeof(idsp));
-ff_idctdsp_init(&idsp, avctx);
+ff_idctdsp_init(&s->idsp, avctx);
for (i = 0; i < 64; i++)
-s->dv_zigzag[0][i] = idsp.idct_permutation[ff_zigzag_direct[i]];
+s->dv_zigzag[0][i] = s->idsp.idct_permutation[ff_zigzag_direct[i]];
if (avctx->lowres){
for (i = 0; i < 64; i++){
int j = ff_dv_zigzag248_direct[i];
-s->dv_zigzag[1][i] = idsp.idct_permutation[(j & 7) + (j & 8) * 4 +
(j & 48) / 2];
+s->dv_zigzag[1][i] = s->idsp.idct_permutation[(j & 7) + (j & 8) *
4 + (j & 48) / 2];
}
}else
memcpy(s->dv_zigzag[1], ff_dv_zigzag248_direct,
sizeof(s->dv_zigzag[1]));
-s->idct_put[0] = idsp.idct_put;
+s->idct_put[0] = s->idsp.idct_put;
s->idct_put[1] = ff_simple_idct248_put;
return ff_dvvideo_init(avctx);
@@ -272,6 +269,49 @@ static inline void bit_copy(PutBitContext *pb,
GetBitContext *gb)
put_bits(pb, bits_left, get_bits(gb, bits_left));
}
+static av_always_inline void put_block_8x4(int16_t *block, uint8_t *restrict
p, int stride)
+{
+int i, j;
+const uint8_t *cm = ff_crop_tab + MAX_NEG_CROP;
+
+for (i = 0; i < 4; i++) {
+for (j = 0; j < 8; j++)
+p[j] = cm[block[j]];
+block += 8;
+p += stride;
+}
+}
+
+static void dv100_idct_put_last_row_field_chroma(DVVideoContext *s, uint8_t
*data,
+ int stride, int16_t *blocks)
+{
+s->idsp.idct(blocks + 0*64);
+s->idsp.idct(blocks + 1*64);
+
+put_block_8x4(blocks+0*64, data, stride<<1);
+put_block_8x4(blocks+0*64 + 4*8, data + 8, stride<<1);
+put_block_8x4(blocks+1*64, data + stride, stride<<1);
+put_block_8x4(blocks+1*64 + 4*8, data + 8 + stride, stride<<1);
+}
+
+static void dv100_idct_put_last_row_field_luma(DVVideoContext *s, uint8_t
*data,
+ int stride, int16_t *blocks)
+{
+s->idsp.idct(blocks + 0*64);
+s->idsp.idct(blocks + 1*64);
+s->idsp.idct(blocks + 2*64);
+s->idsp.idct(blocks + 3*64);
+
+put_block_8x4(blocks+0*64, data, stride<<1);
+put_block_8x4(blocks+0*64 + 4*8, data + 16, stride<<1);
+put_block_8x4(blocks+1*64, data + 8, stride<<1);
+put_block_8x4(blocks+1*64 + 4*8, data + 24, stride<<1);
+put_block_8x4(blocks+2*64, data + stride, stride<<1);
+put_block_8x4(blocks+2*64 + 4*8, data + 16 + stride, stride<<1);
+put_block_8x4(blocks+3*64, data + 8 + stride, stride<<1);
+put_block_8x4(blocks+3*64 + 4*8, data + 24 + stride, stride<<1);
+}
+
/* mb_x and mb_y are in units of 8 pixels */
static int dv_decode_video_segment(AVCodecContext *avctx, void *arg)
{
@@ -443,14 +483,18 @@ retry:
}
y_ptr= s->frame->data[0] +
((mb_y * s->frame->linesize[0] + mb_x) << log2_blocksize);
-linesize = s->frame->linesize[0] << is_field_mode[mb_index];
-mb[0].idct_put(y_ptr, linesize, block + 0 * 64);
-if (s->sys->video_stype == 4) { /* SD 422 */
-mb[2].idct_put(y_ptr + (1 << log2_blocksize),linesize,
block + 2 * 64);
+if (mb_y == 134 && is_field_mode[mb_index]) {
+dv100_idct_put_last_row_field_luma(s, y_ptr,
s->frame->linesize[0], block);
} else {
-mb[1].idct_put(y_ptr + (1 << log2_blocksize),linesize,
block + 1 * 64);
-mb[2].idct_put(y_ptr + y_stride, linesize,
block + 2 * 64);
-mb[3].idct_put(y_ptr + (1 << log2_blocksize) + y_stride, linesize,
block + 3 * 64)
