Revert "mpeg12: move full_pel from MpegEncContext to Mpeg1Context"

This reverts commit da22ba7d since it
broke slice threading. Slice threading just duplicates MpegEncContext
so every value used during mpeg_decode_slice has to be in it.
A second patch will fix the illusion that Mpeg1Context is available
in mpeg_decode_slice.

libavcodec/mpeg12.c

@@ -734,9 +734,8 @@ static void exchange_uv(MpegEncContext *s)
 #define MT_16X8  2
 #define MT_DMV   3
 
-static int mpeg_decode_mb(Mpeg1Context *s1, DCTELEM block[12][64])
+static int mpeg_decode_mb(MpegEncContext *s, DCTELEM block[12][64])
 {
-    MpegEncContext *s = &s1->mpeg_enc_ctx;
     int i, j, k, cbp, val, mb_type, motion_type;
     const int mb_block_count = 4 + (1 << s->chroma_format);
 
@@ -910,7 +909,7 @@ static int mpeg_decode_mb(Mpeg1Context *s1, DCTELEM block[12][64])
                             s->mv[i][0][1]= s->last_mv[i][0][1]= s->last_mv[i][1][1] =
                                 mpeg_decode_motion(s, s->mpeg_f_code[i][1], s->last_mv[i][0][1]);
                             /* full_pel: only for MPEG-1 */
-                            if (s1->full_pel[i]) {
+                            if (s->full_pel[i]) {
                                 s->mv[i][0][0] <<= 1;
                                 s->mv[i][0][1] <<= 1;
                             }
@@ -1328,7 +1327,7 @@ static int mpeg1_decode_picture(AVCodecContext *avctx,
 
     vbv_delay = get_bits(&s->gb, 16);
     if (s->pict_type == AV_PICTURE_TYPE_P || s->pict_type == AV_PICTURE_TYPE_B) {
-        s1->full_pel[0] = get_bits1(&s->gb);
+        s->full_pel[0] = get_bits1(&s->gb);
         f_code = get_bits(&s->gb, 3);
         if (f_code == 0 && (avctx->err_recognition & AV_EF_BITSTREAM))
             return -1;
@@ -1336,7 +1335,7 @@ static int mpeg1_decode_picture(AVCodecContext *avctx,
         s->mpeg_f_code[0][1] = f_code;
     }
     if (s->pict_type == AV_PICTURE_TYPE_B) {
-        s1->full_pel[1] = get_bits1(&s->gb);
+        s->full_pel[1] = get_bits1(&s->gb);
         f_code = get_bits(&s->gb, 3);
         if (f_code == 0 && (avctx->err_recognition & AV_EF_BITSTREAM))
             return -1;
@@ -1484,7 +1483,7 @@ static void mpeg_decode_picture_coding_extension(Mpeg1Context *s1)
 {
     MpegEncContext *s = &s1->mpeg_enc_ctx;
 
-    s1->full_pel[0] = s1->full_pel[1] = 0;
+    s->full_pel[0] = s->full_pel[1] = 0;
     s->mpeg_f_code[0][0] = get_bits(&s->gb, 4);
     s->mpeg_f_code[0][1] = get_bits(&s->gb, 4);
     s->mpeg_f_code[1][0] = get_bits(&s->gb, 4);
@@ -1716,7 +1715,7 @@ static int mpeg_decode_slice(Mpeg1Context *s1, int mb_y,
         if (CONFIG_MPEG_XVMC_DECODER && s->avctx->xvmc_acceleration > 1)
             ff_xvmc_init_block(s); // set s->block
 
-        if (mpeg_decode_mb(s1, s->block) < 0)
+        if (mpeg_decode_mb(s, s->block) < 0)
             return -1;
 
         if (s->current_picture.f.motion_val[0] && !s->encoding) { // note motion_val is normally NULL unless we want to extract the MVs
@@ -2259,7 +2258,7 @@ static int decode_chunks(AVCodecContext *avctx,
                 }
 
                 if (CONFIG_MPEG_VDPAU_DECODER && avctx->codec->capabilities & CODEC_CAP_HWACCEL_VDPAU)
-                    ff_vdpau_mpeg_picture_complete(s, buf, buf_size, s->slice_count);
+                    ff_vdpau_mpeg_picture_complete(s2, buf, buf_size, s->slice_count);
 
                 if (slice_end(avctx, picture)) {
                     if (s2->last_picture_ptr || s2->low_delay) //FIXME merge with the stuff in mpeg_decode_slice

libavcodec/mpeg12.h

@@ -41,7 +41,6 @@ typedef struct Mpeg1Context {
     int save_width, save_height, save_progressive_seq;
     AVRational frame_rate_ext;       ///< MPEG-2 specific framerate modificator
     int sync;                        ///< Did we reach a sync point like a GOP/SEQ/KEYFrame?
-    int full_pel[2];
     int closed_gop;                  ///< GOP is closed
 } Mpeg1Context;
 

libavcodec/mpegvideo.h

@@ -633,6 +633,7 @@ typedef struct MpegEncContext {
     int chroma_y_shift;
 
     int progressive_frame;
+    int full_pel[2];
     int interlaced_dct;
     int first_slice;
     int first_field;         ///< is 1 for the first field of a field picture 0 otherwise

libavcodec/vdpau.c

@@ -190,10 +190,9 @@ void ff_vdpau_h264_picture_complete(MpegEncContext *s)
     render->bitstream_buffers_used = 0;
 }
 
-void ff_vdpau_mpeg_picture_complete(Mpeg1Context *s1, const uint8_t *buf,
+void ff_vdpau_mpeg_picture_complete(MpegEncContext *s, const uint8_t *buf,
                                     int buf_size, int slice_count)
 {
-    MpegEncContext *s = &s1->mpeg_enc_ctx;
     struct vdpau_render_state *render, *last, *next;
     int i;
 
@@ -212,8 +211,8 @@ void ff_vdpau_mpeg_picture_complete(Mpeg1Context *s1, const uint8_t *buf,
     render->info.mpeg.alternate_scan             = s->alternate_scan;
     render->info.mpeg.q_scale_type               = s->q_scale_type;
     render->info.mpeg.top_field_first            = s->top_field_first;
-    render->info.mpeg.full_pel_forward_vector    = s1->full_pel[0]; // MPEG-1 only.  Set 0 for MPEG-2
-    render->info.mpeg.full_pel_backward_vector   = s1->full_pel[1]; // MPEG-1 only.  Set 0 for MPEG-2
+    render->info.mpeg.full_pel_forward_vector    = s->full_pel[0]; // MPEG-1 only.  Set 0 for MPEG-2
+    render->info.mpeg.full_pel_backward_vector   = s->full_pel[1]; // MPEG-1 only.  Set 0 for MPEG-2
     render->info.mpeg.f_code[0][0]               = s->mpeg_f_code[0][0]; // For MPEG-1 fill both horiz. & vert.
     render->info.mpeg.f_code[0][1]               = s->mpeg_f_code[0][1];
     render->info.mpeg.f_code[1][0]               = s->mpeg_f_code[1][0];

libavcodec/vdpau_internal.h

@@ -26,12 +26,11 @@
 
 #include <stdint.h>
 #include "mpegvideo.h"
-#include "mpeg12.h"
 
 void ff_vdpau_add_data_chunk(MpegEncContext *s, const uint8_t *buf,
                              int buf_size);
 
-void ff_vdpau_mpeg_picture_complete(Mpeg1Context *s1, const uint8_t *buf,
+void ff_vdpau_mpeg_picture_complete(MpegEncContext *s, const uint8_t *buf,
                                     int buf_size, int slice_count);
 
 void ff_vdpau_h264_picture_start(MpegEncContext *s);