]> git.sesse.net Git - ffmpeg/blobdiff - libavcodec/mpegvideo.c
vaapi_h264: Add support for VUI parameters
[ffmpeg] / libavcodec / mpegvideo.c
index 46754ddc2bced001903f7b9392e3491d5b0b22d8..230154f02cf880886df8d5dda55394ace46c60b8 100644 (file)
 #include "libavutil/internal.h"
 #include "libavutil/timer.h"
 #include "avcodec.h"
-#include "dsputil.h"
+#include "blockdsp.h"
+#include "idctdsp.h"
 #include "internal.h"
 #include "mathops.h"
+#include "mpeg_er.h"
+#include "mpegutils.h"
 #include "mpegvideo.h"
+#include "mpegvideodata.h"
 #include "mjpegenc.h"
 #include "msmpeg4.h"
+#include "qpeldsp.h"
 #include "xvmc_internal.h"
 #include "thread.h"
+#include "wmv2.h"
 #include <limits.h>
 
-static const uint8_t ff_default_chroma_qscale_table[32] = {
-//   0   1   2   3   4   5   6   7   8   9  10  11  12  13  14  15
-     0,  1,  2,  3,  4,  5,  6,  7,  8,  9, 10, 11, 12, 13, 14, 15,
-    16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31
-};
-
-const uint8_t ff_mpeg1_dc_scale_table[128] = {
-//  0  1  2  3  4  5  6  7  8  9 10 11 12 13 14 15
-    8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8,
-    8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8,
-    8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8,
-    8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8,
-    8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8,
-    8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8,
-    8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8,
-    8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8,
-};
-
-static const uint8_t mpeg2_dc_scale_table1[128] = {
-//  0  1  2  3  4  5  6  7  8  9 10 11 12 13 14 15
-    4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4,
-    4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4,
-    4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4,
-    4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4,
-    4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4,
-    4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4,
-    4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4,
-    4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4,
-};
-
-static const uint8_t mpeg2_dc_scale_table2[128] = {
-//  0  1  2  3  4  5  6  7  8  9 10 11 12 13 14 15
-    2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
-    2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
-    2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
-    2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
-    2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
-    2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
-    2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
-    2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
-};
-
-static const uint8_t mpeg2_dc_scale_table3[128] = {
-//  0  1  2  3  4  5  6  7  8  9 10 11 12 13 14 15
-    1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
-    1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
-    1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
-    1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
-    1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
-    1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
-    1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
-    1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
-};
-
-const uint8_t *const ff_mpeg2_dc_scale_table[4] = {
-    ff_mpeg1_dc_scale_table,
-    mpeg2_dc_scale_table1,
-    mpeg2_dc_scale_table2,
-    mpeg2_dc_scale_table3,
-};
-
-const enum AVPixelFormat ff_pixfmt_list_420[] = {
-    AV_PIX_FMT_YUV420P,
-    AV_PIX_FMT_NONE
-};
-
 static void dct_unquantize_mpeg1_intra_c(MpegEncContext *s,
                                    int16_t *block, int n, int qscale)
 {
@@ -121,7 +61,7 @@ static void dct_unquantize_mpeg1_intra_c(MpegEncContext *s,
         block[0] = block[0] * s->y_dc_scale;
     else
         block[0] = block[0] * s->c_dc_scale;
-    /* XXX: only mpeg1 */
+    /* XXX: only MPEG-1 */
     quant_matrix = s->intra_matrix;
     for(i=1;i<=nCoeffs;i++) {
         int j= s->intra_scantable.permutated[i];
@@ -327,38 +267,12 @@ static void dct_unquantize_h263_inter_c(MpegEncContext *s,
     }
 }
 
-static void mpeg_er_decode_mb(void *opaque, int ref, int mv_dir, int mv_type,
-                              int (*mv)[2][4][2],
-                              int mb_x, int mb_y, int mb_intra, int mb_skipped)
-{
-    MpegEncContext *s = opaque;
-
-    s->mv_dir     = mv_dir;
-    s->mv_type    = mv_type;
-    s->mb_intra   = mb_intra;
-    s->mb_skipped = mb_skipped;
-    s->mb_x       = mb_x;
-    s->mb_y       = mb_y;
-    memcpy(s->mv, mv, sizeof(*mv));
-
-    ff_init_block_index(s);
-    ff_update_block_index(s);
-
-    s->dsp.clear_blocks(s->block[0]);
-
-    s->dest[0] = s->current_picture.f.data[0] + (s->mb_y *  16                       * s->linesize)   + s->mb_x *  16;
-    s->dest[1] = s->current_picture.f.data[1] + (s->mb_y * (16 >> s->chroma_y_shift) * s->uvlinesize) + s->mb_x * (16 >> s->chroma_x_shift);
-    s->dest[2] = s->current_picture.f.data[2] + (s->mb_y * (16 >> s->chroma_y_shift) * s->uvlinesize) + s->mb_x * (16 >> s->chroma_x_shift);
-
-    assert(ref == 0);
-    ff_MPV_decode_mb(s, s->block);
-}
-
 /* init common dct for both encoder and decoder */
-av_cold int ff_dct_common_init(MpegEncContext *s)
+static av_cold int dct_init(MpegEncContext *s)
 {
-    ff_dsputil_init(&s->dsp, s->avctx);
+    ff_blockdsp_init(&s->bdsp, s->avctx);
     ff_hpeldsp_init(&s->hdsp, s->avctx->flags);
+    ff_mpegvideodsp_init(&s->mdsp);
     ff_videodsp_init(&s->vdsp, s->avctx->bits_per_raw_sample);
 
     s->dct_unquantize_h263_intra = dct_unquantize_h263_intra_c;
@@ -366,385 +280,47 @@ av_cold int ff_dct_common_init(MpegEncContext *s)
     s->dct_unquantize_mpeg1_intra = dct_unquantize_mpeg1_intra_c;
     s->dct_unquantize_mpeg1_inter = dct_unquantize_mpeg1_inter_c;
     s->dct_unquantize_mpeg2_intra = dct_unquantize_mpeg2_intra_c;
-    if (s->flags & CODEC_FLAG_BITEXACT)
+    if (s->avctx->flags & AV_CODEC_FLAG_BITEXACT)
         s->dct_unquantize_mpeg2_intra = dct_unquantize_mpeg2_intra_bitexact;
     s->dct_unquantize_mpeg2_inter = dct_unquantize_mpeg2_inter_c;
 
+    if (HAVE_INTRINSICS_NEON)
+        ff_mpv_common_init_neon(s);
+
     if (ARCH_ARM)
-        ff_MPV_common_init_arm(s);
+        ff_mpv_common_init_arm(s);
     if (ARCH_PPC)
-        ff_MPV_common_init_ppc(s);
+        ff_mpv_common_init_ppc(s);
     if (ARCH_X86)
-        ff_MPV_common_init_x86(s);
-
-    /* load & permutate scantables
-     * note: only wmv uses different ones
-     */
-    if (s->alternate_scan) {
-        ff_init_scantable(s->dsp.idct_permutation, &s->inter_scantable  , ff_alternate_vertical_scan);
-        ff_init_scantable(s->dsp.idct_permutation, &s->intra_scantable  , ff_alternate_vertical_scan);
-    } else {
-        ff_init_scantable(s->dsp.idct_permutation, &s->inter_scantable  , ff_zigzag_direct);
-        ff_init_scantable(s->dsp.idct_permutation, &s->intra_scantable  , ff_zigzag_direct);
-    }
-    ff_init_scantable(s->dsp.idct_permutation, &s->intra_h_scantable, ff_alternate_horizontal_scan);
-    ff_init_scantable(s->dsp.idct_permutation, &s->intra_v_scantable, ff_alternate_vertical_scan);
-
-    return 0;
-}
-
-static int frame_size_alloc(MpegEncContext *s, int linesize)
-{
-    int alloc_size = FFALIGN(FFABS(linesize) + 32, 32);
-
-    // edge emu needs blocksize + filter length - 1
-    // (= 17x17 for  halfpel / 21x21 for  h264)
-    // VC1 computes luma and chroma simultaneously and needs 19X19 + 9x9
-    // at uvlinesize. It supports only YUV420 so 24x24 is enough
-    // linesize * interlaced * MBsize
-    FF_ALLOCZ_OR_GOTO(s->avctx, s->edge_emu_buffer, alloc_size * 2 * 24,
-                      fail);
-
-    FF_ALLOCZ_OR_GOTO(s->avctx, s->me.scratchpad, alloc_size * 2 * 16 * 3,
-                      fail)
-    s->me.temp         = s->me.scratchpad;
-    s->rd_scratchpad   = s->me.scratchpad;
-    s->b_scratchpad    = s->me.scratchpad;
-    s->obmc_scratchpad = s->me.scratchpad + 16;
-
-    return 0;
-fail:
-    av_freep(&s->edge_emu_buffer);
-    return AVERROR(ENOMEM);
-}
-
-/**
- * Allocate a frame buffer
- */
-static int alloc_frame_buffer(MpegEncContext *s, Picture *pic)
-{
-    int edges_needed = av_codec_is_encoder(s->avctx->codec);
-    int r, ret;
-
-    pic->tf.f = &pic->f;
-    if (s->codec_id != AV_CODEC_ID_WMV3IMAGE &&
-        s->codec_id != AV_CODEC_ID_VC1IMAGE  &&
-        s->codec_id != AV_CODEC_ID_MSS2) {
-        if (edges_needed) {
-            pic->f.width  = s->avctx->width  + 2 * EDGE_WIDTH;
-            pic->f.height = s->avctx->height + 2 * EDGE_WIDTH;
-        }
-
-        r = ff_thread_get_buffer(s->avctx, &pic->tf,
-                                 pic->reference ? AV_GET_BUFFER_FLAG_REF : 0);
-    } else {
-        pic->f.width  = s->avctx->width;
-        pic->f.height = s->avctx->height;
-        pic->f.format = s->avctx->pix_fmt;
-        r = avcodec_default_get_buffer2(s->avctx, &pic->f, 0);
-    }
-
-    if (r < 0 || !pic->f.buf[0]) {
-        av_log(s->avctx, AV_LOG_ERROR, "get_buffer() failed (%d %p)\n",
-               r, pic->f.data[0]);
-        return -1;
-    }
-
-    if (edges_needed) {
-        int i;
-        for (i = 0; pic->f.data[i]; i++) {
-            int offset = (EDGE_WIDTH >> (i ? s->chroma_y_shift : 0)) *
-                         pic->f.linesize[i] +
-                         (EDGE_WIDTH >> (i ? s->chroma_x_shift : 0));
-            pic->f.data[i] += offset;
-        }
-        pic->f.width  = s->avctx->width;
-        pic->f.height = s->avctx->height;
-    }
-
-    if (s->avctx->hwaccel) {
-        assert(!pic->hwaccel_picture_private);
-        if (s->avctx->hwaccel->priv_data_size) {
-            pic->hwaccel_priv_buf = av_buffer_allocz(s->avctx->hwaccel->priv_data_size);
-            if (!pic->hwaccel_priv_buf) {
-                av_log(s->avctx, AV_LOG_ERROR, "alloc_frame_buffer() failed (hwaccel private data allocation)\n");
-                return -1;
-            }
-            pic->hwaccel_picture_private = pic->hwaccel_priv_buf->data;
-        }
-    }
-
-    if (s->linesize && (s->linesize   != pic->f.linesize[0] ||
-                        s->uvlinesize != pic->f.linesize[1])) {
-        av_log(s->avctx, AV_LOG_ERROR,
-               "get_buffer() failed (stride changed)\n");
-        ff_mpeg_unref_picture(s, pic);
-        return -1;
-    }
-
-    if (pic->f.linesize[1] != pic->f.linesize[2]) {
-        av_log(s->avctx, AV_LOG_ERROR,
-               "get_buffer() failed (uv stride mismatch)\n");
-        ff_mpeg_unref_picture(s, pic);
-        return -1;
-    }
-
-    if (!s->edge_emu_buffer &&
-        (ret = frame_size_alloc(s, pic->f.linesize[0])) < 0) {
-        av_log(s->avctx, AV_LOG_ERROR,
-               "get_buffer() failed to allocate context scratch buffers.\n");
-        ff_mpeg_unref_picture(s, pic);
-        return ret;
-    }
-
-    return 0;
-}
-
-void ff_free_picture_tables(Picture *pic)
-{
-    int i;
-
-    av_buffer_unref(&pic->mb_var_buf);
-    av_buffer_unref(&pic->mc_mb_var_buf);
-    av_buffer_unref(&pic->mb_mean_buf);
-    av_buffer_unref(&pic->mbskip_table_buf);
-    av_buffer_unref(&pic->qscale_table_buf);
-    av_buffer_unref(&pic->mb_type_buf);
-
-    for (i = 0; i < 2; i++) {
-        av_buffer_unref(&pic->motion_val_buf[i]);
-        av_buffer_unref(&pic->ref_index_buf[i]);
-    }
-}
-
-static int alloc_picture_tables(MpegEncContext *s, Picture *pic)
-{
-    const int big_mb_num    = s->mb_stride * (s->mb_height + 1) + 1;
-    const int mb_array_size = s->mb_stride * s->mb_height;
-    const int b8_array_size = s->b8_stride * s->mb_height * 2;
-    int i;
-
-
-    pic->mbskip_table_buf = av_buffer_allocz(mb_array_size + 2);
-    pic->qscale_table_buf = av_buffer_allocz(big_mb_num + s->mb_stride);
-    pic->mb_type_buf      = av_buffer_allocz((big_mb_num + s->mb_stride) *
-                                             sizeof(uint32_t));
-    if (!pic->mbskip_table_buf || !pic->qscale_table_buf || !pic->mb_type_buf)
-        return AVERROR(ENOMEM);
-
-    if (s->encoding) {
-        pic->mb_var_buf    = av_buffer_allocz(mb_array_size * sizeof(int16_t));
-        pic->mc_mb_var_buf = av_buffer_allocz(mb_array_size * sizeof(int16_t));
-        pic->mb_mean_buf   = av_buffer_allocz(mb_array_size);
-        if (!pic->mb_var_buf || !pic->mc_mb_var_buf || !pic->mb_mean_buf)
-            return AVERROR(ENOMEM);
-    }
-
-    if (s->out_format == FMT_H263 || s->encoding) {
-        int mv_size        = 2 * (b8_array_size + 4) * sizeof(int16_t);
-        int ref_index_size = 4 * mb_array_size;
-
-        for (i = 0; mv_size && i < 2; i++) {
-            pic->motion_val_buf[i] = av_buffer_allocz(mv_size);
-            pic->ref_index_buf[i]  = av_buffer_allocz(ref_index_size);
-            if (!pic->motion_val_buf[i] || !pic->ref_index_buf[i])
-                return AVERROR(ENOMEM);
-        }
-    }
+        ff_mpv_common_init_x86(s);
 
     return 0;
 }
 
-static int make_tables_writable(Picture *pic)
-{
-    int ret, i;
-#define MAKE_WRITABLE(table) \
-do {\
-    if (pic->table &&\
-       (ret = av_buffer_make_writable(&pic->table)) < 0)\
-    return ret;\
-} while (0)
-
-    MAKE_WRITABLE(mb_var_buf);
-    MAKE_WRITABLE(mc_mb_var_buf);
-    MAKE_WRITABLE(mb_mean_buf);
-    MAKE_WRITABLE(mbskip_table_buf);
-    MAKE_WRITABLE(qscale_table_buf);
-    MAKE_WRITABLE(mb_type_buf);
-
-    for (i = 0; i < 2; i++) {
-        MAKE_WRITABLE(motion_val_buf[i]);
-        MAKE_WRITABLE(ref_index_buf[i]);
-    }
-
-    return 0;
-}
-
-/**
- * Allocate a Picture.
- * The pixels are allocated/set by calling get_buffer() if shared = 0
- */
-int ff_alloc_picture(MpegEncContext *s, Picture *pic, int shared)
+av_cold void ff_mpv_idct_init(MpegEncContext *s)
 {
-    int i, ret;
+    ff_idctdsp_init(&s->idsp, s->avctx);
 
-    if (shared) {
-        assert(pic->f.data[0]);
-        pic->shared = 1;
+    /* load & permutate scantables
+     * note: only wmv uses different ones
+     */
+    if (s->alternate_scan) {
+        ff_init_scantable(s->idsp.idct_permutation, &s->inter_scantable, ff_alternate_vertical_scan);
+        ff_init_scantable(s->idsp.idct_permutation, &s->intra_scantable, ff_alternate_vertical_scan);
     } else {
-        assert(!pic->f.buf[0]);
-
-        if (alloc_frame_buffer(s, pic) < 0)
-            return -1;
-
-        s->linesize   = pic->f.linesize[0];
-        s->uvlinesize = pic->f.linesize[1];
+        ff_init_scantable(s->idsp.idct_permutation, &s->inter_scantable, ff_zigzag_direct);
+        ff_init_scantable(s->idsp.idct_permutation, &s->intra_scantable, ff_zigzag_direct);
     }
-
-    if (!pic->qscale_table_buf)
-        ret = alloc_picture_tables(s, pic);
-    else
-        ret = make_tables_writable(pic);
-    if (ret < 0)
-        goto fail;
-
-    if (s->encoding) {
-        pic->mb_var    = (uint16_t*)pic->mb_var_buf->data;
-        pic->mc_mb_var = (uint16_t*)pic->mc_mb_var_buf->data;
-        pic->mb_mean   = pic->mb_mean_buf->data;
-    }
-
-    pic->mbskip_table = pic->mbskip_table_buf->data;
-    pic->qscale_table = pic->qscale_table_buf->data + 2 * s->mb_stride + 1;
-    pic->mb_type      = (uint32_t*)pic->mb_type_buf->data + 2 * s->mb_stride + 1;
-
-    if (pic->motion_val_buf[0]) {
-        for (i = 0; i < 2; i++) {
-            pic->motion_val[i] = (int16_t (*)[2])pic->motion_val_buf[i]->data + 4;
-            pic->ref_index[i]  = pic->ref_index_buf[i]->data;
-        }
-    }
-
-    return 0;
-fail:
-    av_log(s->avctx, AV_LOG_ERROR, "Error allocating a picture.\n");
-    ff_mpeg_unref_picture(s, pic);
-    ff_free_picture_tables(pic);
-    return AVERROR(ENOMEM);
+    ff_init_scantable(s->idsp.idct_permutation, &s->intra_h_scantable, ff_alternate_horizontal_scan);
+    ff_init_scantable(s->idsp.idct_permutation, &s->intra_v_scantable, ff_alternate_vertical_scan);
 }
 
-/**
- * Deallocate a picture.
- */
-void ff_mpeg_unref_picture(MpegEncContext *s, Picture *pic)
+static int alloc_picture(MpegEncContext *s, Picture *pic, int shared)
 {
-    int off = offsetof(Picture, mb_mean) + sizeof(pic->mb_mean);
-
-    pic->tf.f = &pic->f;
-    /* WM Image / Screen codecs allocate internal buffers with different
-     * dimensions / colorspaces; ignore user-defined callbacks for these. */
-    if (s->codec_id != AV_CODEC_ID_WMV3IMAGE &&
-        s->codec_id != AV_CODEC_ID_VC1IMAGE  &&
-        s->codec_id != AV_CODEC_ID_MSS2)
-        ff_thread_release_buffer(s->avctx, &pic->tf);
-    else
-        av_frame_unref(&pic->f);
-
-    av_buffer_unref(&pic->hwaccel_priv_buf);
-
-    if (pic->needs_realloc)
-        ff_free_picture_tables(pic);
-
-    memset((uint8_t*)pic + off, 0, sizeof(*pic) - off);
-}
-
-static int update_picture_tables(Picture *dst, Picture *src)
-{
-     int i;
-
-#define UPDATE_TABLE(table)\
-do {\
-    if (src->table &&\
-        (!dst->table || dst->table->buffer != src->table->buffer)) {\
-        av_buffer_unref(&dst->table);\
-        dst->table = av_buffer_ref(src->table);\
-        if (!dst->table) {\
-            ff_free_picture_tables(dst);\
-            return AVERROR(ENOMEM);\
-        }\
-    }\
-} while (0)
-
-    UPDATE_TABLE(mb_var_buf);
-    UPDATE_TABLE(mc_mb_var_buf);
-    UPDATE_TABLE(mb_mean_buf);
-    UPDATE_TABLE(mbskip_table_buf);
-    UPDATE_TABLE(qscale_table_buf);
-    UPDATE_TABLE(mb_type_buf);
-    for (i = 0; i < 2; i++) {
-        UPDATE_TABLE(motion_val_buf[i]);
-        UPDATE_TABLE(ref_index_buf[i]);
-    }
-
-    dst->mb_var        = src->mb_var;
-    dst->mc_mb_var     = src->mc_mb_var;
-    dst->mb_mean       = src->mb_mean;
-    dst->mbskip_table  = src->mbskip_table;
-    dst->qscale_table  = src->qscale_table;
-    dst->mb_type       = src->mb_type;
-    for (i = 0; i < 2; i++) {
-        dst->motion_val[i] = src->motion_val[i];
-        dst->ref_index[i]  = src->ref_index[i];
-    }
-
-    return 0;
-}
-
-int ff_mpeg_ref_picture(MpegEncContext *s, Picture *dst, Picture *src)
-{
-    int ret;
-
-    av_assert0(!dst->f.buf[0]);
-    av_assert0(src->f.buf[0]);
-
-    src->tf.f = &src->f;
-    dst->tf.f = &dst->f;
-    ret = ff_thread_ref_frame(&dst->tf, &src->tf);
-    if (ret < 0)
-        goto fail;
-
-    ret = update_picture_tables(dst, src);
-    if (ret < 0)
-        goto fail;
-
-    if (src->hwaccel_picture_private) {
-        dst->hwaccel_priv_buf = av_buffer_ref(src->hwaccel_priv_buf);
-        if (!dst->hwaccel_priv_buf)
-            goto fail;
-        dst->hwaccel_picture_private = dst->hwaccel_priv_buf->data;
-    }
-
-    dst->field_picture           = src->field_picture;
-    dst->mb_var_sum              = src->mb_var_sum;
-    dst->mc_mb_var_sum           = src->mc_mb_var_sum;
-    dst->b_frame_score           = src->b_frame_score;
-    dst->needs_realloc           = src->needs_realloc;
-    dst->reference               = src->reference;
-    dst->shared                  = src->shared;
-
-    return 0;
-fail:
-    ff_mpeg_unref_picture(s, dst);
-    return ret;
-}
-
-static void exchange_uv(MpegEncContext *s)
-{
-    int16_t (*tmp)[64];
-
-    tmp           = s->pblocks[4];
-    s->pblocks[4] = s->pblocks[5];
-    s->pblocks[5] = tmp;
+    return ff_alloc_picture(s->avctx, pic, &s->me, &s->sc, shared, 0,
+                            s->chroma_x_shift, s->chroma_y_shift, s->out_format,
+                            s->mb_stride, s->mb_height, s->b8_stride,
+                            &s->linesize, &s->uvlinesize);
 }
 
 static int init_duplicate_context(MpegEncContext *s)
@@ -754,19 +330,19 @@ static int init_duplicate_context(MpegEncContext *s)
     int yc_size = y_size + 2 * c_size;
     int i;
 
-    s->edge_emu_buffer =
+    s->sc.edge_emu_buffer =
     s->me.scratchpad   =
     s->me.temp         =
-    s->rd_scratchpad   =
-    s->b_scratchpad    =
-    s->obmc_scratchpad = NULL;
+    s->sc.rd_scratchpad   =
+    s->sc.b_scratchpad    =
+    s->sc.obmc_scratchpad = NULL;
 
     if (s->encoding) {
         FF_ALLOCZ_OR_GOTO(s->avctx, s->me.map,
                           ME_MAP_SIZE * sizeof(uint32_t), fail)
         FF_ALLOCZ_OR_GOTO(s->avctx, s->me.score_map,
                           ME_MAP_SIZE * sizeof(uint32_t), fail)
-        if (s->avctx->noise_reduction) {
+        if (s->noise_reduction) {
             FF_ALLOCZ_OR_GOTO(s->avctx, s->dct_error_sum,
                               2 * 64 * sizeof(int), fail)
         }
@@ -777,8 +353,13 @@ static int init_duplicate_context(MpegEncContext *s)
     for (i = 0; i < 12; i++) {
         s->pblocks[i] = &s->block[i];
     }
-    if (s->avctx->codec_tag == AV_RL32("VCR2"))
-        exchange_uv(s);
+    if (s->avctx->codec_tag == AV_RL32("VCR2")) {
+        // exchange uv
+        int16_t (*tmp)[64];
+        tmp           = s->pblocks[4];
+        s->pblocks[4] = s->pblocks[5];
+        s->pblocks[5] = tmp;
+    }
 
     if (s->out_format == FMT_H263) {
         /* ac values */
@@ -791,20 +372,20 @@ static int init_duplicate_context(MpegEncContext *s)
 
     return 0;
 fail:
-    return -1; // free() through ff_MPV_common_end()
+    return -1; // free() through ff_mpv_common_end()
 }
 
 static void free_duplicate_context(MpegEncContext *s)
 {
-    if (s == NULL)
+    if (!s)
         return;
 
-    av_freep(&s->edge_emu_buffer);
+    av_freep(&s->sc.edge_emu_buffer);
     av_freep(&s->me.scratchpad);
     s->me.temp =
-    s->rd_scratchpad =
-    s->b_scratchpad =
-    s->obmc_scratchpad = NULL;
+    s->sc.rd_scratchpad =
+    s->sc.b_scratchpad =
+    s->sc.obmc_scratchpad = NULL;
 
     av_freep(&s->dct_error_sum);
     av_freep(&s->me.map);
@@ -817,12 +398,12 @@ static void free_duplicate_context(MpegEncContext *s)
 static void backup_duplicate_context(MpegEncContext *bak, MpegEncContext *src)
 {
 #define COPY(a) bak->a = src->a
-    COPY(edge_emu_buffer);
+    COPY(sc.edge_emu_buffer);
     COPY(me.scratchpad);
     COPY(me.temp);
-    COPY(rd_scratchpad);
-    COPY(b_scratchpad);
-    COPY(obmc_scratchpad);
+    COPY(sc.rd_scratchpad);
+    COPY(sc.b_scratchpad);
+    COPY(sc.obmc_scratchpad);
     COPY(me.map);
     COPY(me.score_map);
     COPY(blocks);
@@ -853,10 +434,16 @@ int ff_update_duplicate_context(MpegEncContext *dst, MpegEncContext *src)
     for (i = 0; i < 12; i++) {
         dst->pblocks[i] = &dst->block[i];
     }
-    if (dst->avctx->codec_tag == AV_RL32("VCR2"))
-        exchange_uv(dst);
-    if (!dst->edge_emu_buffer &&
-        (ret = frame_size_alloc(dst, dst->linesize)) < 0) {
+    if (dst->avctx->codec_tag == AV_RL32("VCR2")) {
+        // exchange uv
+        int16_t (*tmp)[64];
+        tmp             = dst->pblocks[4];
+        dst->pblocks[4] = dst->pblocks[5];
+        dst->pblocks[5] = tmp;
+    }
+    if (!dst->sc.edge_emu_buffer &&
+        (ret = ff_mpeg_framesize_alloc(dst->avctx, &dst->me,
+                                       &dst->sc, dst->linesize)) < 0) {
         av_log(dst->avctx, AV_LOG_ERROR, "failed to allocate context "
                "scratch buffers.\n");
         return ret;
@@ -878,13 +465,16 @@ int ff_mpeg_update_thread_context(AVCodecContext *dst,
     // FIXME can parameters change on I-frames?
     // in that case dst may need a reinit
     if (!s->context_initialized) {
+        int err;
         memcpy(s, s1, sizeof(MpegEncContext));
 
         s->avctx                 = dst;
         s->bitstream_buffer      = NULL;
         s->bitstream_buffer_size = s->allocated_bitstream_buffer_size = 0;
 
-        ff_MPV_common_init(s);
+        ff_mpv_idct_init(s);
+        if ((err = ff_mpv_common_init(s)) < 0)
+            return err;
     }
 
     if (s->height != s1->height || s->width != s1->width || s->context_reinit) {
@@ -892,7 +482,7 @@ int ff_mpeg_update_thread_context(AVCodecContext *dst,
         s->context_reinit = 0;
         s->height = s1->height;
         s->width  = s1->width;
-        if ((err = ff_MPV_common_frame_size_change(s)) < 0)
+        if ((err = ff_mpv_common_frame_size_change(s)) < 0)
             return err;
     }
 
@@ -905,19 +495,19 @@ int ff_mpeg_update_thread_context(AVCodecContext *dst,
     s->picture_number       = s1->picture_number;
 
     for (i = 0; i < MAX_PICTURE_COUNT; i++) {
-        ff_mpeg_unref_picture(s, &s->picture[i]);
-        if (s1->picture[i].f.buf[0] &&
-            (ret = ff_mpeg_ref_picture(s, &s->picture[i], &s1->picture[i])) < 0)
+        ff_mpeg_unref_picture(s->avctx, &s->picture[i]);
+        if (s1->picture[i].f->buf[0] &&
+            (ret = ff_mpeg_ref_picture(s->avctx, &s->picture[i], &s1->picture[i])) < 0)
             return ret;
     }
 
 #define UPDATE_PICTURE(pic)\
 do {\
-    ff_mpeg_unref_picture(s, &s->pic);\
-    if (s1->pic.f.buf[0])\
-        ret = ff_mpeg_ref_picture(s, &s->pic, &s1->pic);\
+    ff_mpeg_unref_picture(s->avctx, &s->pic);\
+    if (s1->pic.f->buf[0])\
+        ret = ff_mpeg_ref_picture(s->avctx, &s->pic, &s1->pic);\
     else\
-        ret = update_picture_tables(&s->pic, &s1->pic);\
+        ret = ff_update_picture_tables(&s->pic, &s1->pic);\
     if (ret < 0)\
         return ret;\
 } while (0)
@@ -926,6 +516,11 @@ do {\
     UPDATE_PICTURE(last_picture);
     UPDATE_PICTURE(next_picture);
 
+#define REBASE_PICTURE(pic, new_ctx, old_ctx)                                 \
+    ((pic && pic >= old_ctx->picture &&                                       \
+      pic < old_ctx->picture + MAX_PICTURE_COUNT) ?                           \
+        &new_ctx->picture[pic - old_ctx->picture] : NULL)
+
     s->last_picture_ptr    = REBASE_PICTURE(s1->last_picture_ptr,    s, s1);
     s->current_picture_ptr = REBASE_PICTURE(s1->current_picture_ptr, s, s1);
     s->next_picture_ptr    = REBASE_PICTURE(s1->next_picture_ptr,    s, s1);
@@ -934,7 +529,7 @@ do {\
     s->next_p_frame_damaged = s1->next_p_frame_damaged;
     s->workaround_bugs      = s1->workaround_bugs;
 
-    // MPEG4 timing info
+    // MPEG-4 timing info
     memcpy(&s->last_time_base, &s1->last_time_base,
            (char *) &s1->pb_field_time + sizeof(s1->pb_field_time) -
            (char *) &s1->last_time_base);
@@ -949,7 +544,7 @@ do {\
 
     if (s1->bitstream_buffer) {
         if (s1->bitstream_buffer_size +
-            FF_INPUT_BUFFER_PADDING_SIZE > s->allocated_bitstream_buffer_size)
+            AV_INPUT_BUFFER_PADDING_SIZE > s->allocated_bitstream_buffer_size)
             av_fast_malloc(&s->bitstream_buffer,
                            &s->allocated_bitstream_buffer_size,
                            s1->allocated_bitstream_buffer_size);
@@ -957,13 +552,14 @@ do {\
         memcpy(s->bitstream_buffer, s1->bitstream_buffer,
                s1->bitstream_buffer_size);
         memset(s->bitstream_buffer + s->bitstream_buffer_size, 0,
-               FF_INPUT_BUFFER_PADDING_SIZE);
+               AV_INPUT_BUFFER_PADDING_SIZE);
     }
 
-    // linesize dependend scratch buffer allocation
-    if (!s->edge_emu_buffer)
+    // linesize-dependent scratch buffer allocation
+    if (!s->sc.edge_emu_buffer)
         if (s1->linesize) {
-            if (frame_size_alloc(s, s1->linesize) < 0) {
+            if (ff_mpeg_framesize_alloc(s->avctx, &s->me,
+                                        &s->sc, s1->linesize) < 0) {
                 av_log(s->avctx, AV_LOG_ERROR, "Failed to allocate context "
                        "scratch buffers.\n");
                 return AVERROR(ENOMEM);
@@ -974,14 +570,14 @@ do {\
             return AVERROR_BUG;
         }
 
-    // MPEG2/interlacing info
+    // MPEG-2/interlacing info
     memcpy(&s->progressive_sequence, &s1->progressive_sequence,
            (char *) &s1->rtp_mode - (char *) &s1->progressive_sequence);
 
     if (!s1->first_field) {
         s->last_pict_type = s1->pict_type;
         if (s1->current_picture_ptr)
-            s->last_lambda_for[s1->pict_type] = s1->current_picture_ptr->f.quality;
+            s->last_lambda_for[s1->pict_type] = s1->current_picture_ptr->f->quality;
     }
 
     return 0;
@@ -993,7 +589,7 @@ do {\
  * The changed fields will not depend upon the
  * prior state of the MpegEncContext.
  */
-void ff_MPV_common_defaults(MpegEncContext *s)
+void ff_mpv_common_defaults(MpegEncContext *s)
 {
     s->y_dc_scale_table      =
     s->c_dc_scale_table      = ff_mpeg1_dc_scale_table;
@@ -1016,46 +612,9 @@ void ff_MPV_common_defaults(MpegEncContext *s)
  * the changed fields will not depend upon
  * the prior state of the MpegEncContext.
  */
-void ff_MPV_decode_defaults(MpegEncContext *s)
-{
-    ff_MPV_common_defaults(s);
-}
-
-static int init_er(MpegEncContext *s)
+void ff_mpv_decode_defaults(MpegEncContext *s)
 {
-    ERContext *er = &s->er;
-    int mb_array_size = s->mb_height * s->mb_stride;
-    int i;
-
-    er->avctx       = s->avctx;
-    er->dsp         = &s->dsp;
-
-    er->mb_index2xy = s->mb_index2xy;
-    er->mb_num      = s->mb_num;
-    er->mb_width    = s->mb_width;
-    er->mb_height   = s->mb_height;
-    er->mb_stride   = s->mb_stride;
-    er->b8_stride   = s->b8_stride;
-
-    er->er_temp_buffer     = av_malloc(s->mb_height * s->mb_stride);
-    er->error_status_table = av_mallocz(mb_array_size);
-    if (!er->er_temp_buffer || !er->error_status_table)
-        goto fail;
-
-    er->mbskip_table  = s->mbskip_table;
-    er->mbintra_table = s->mbintra_table;
-
-    for (i = 0; i < FF_ARRAY_ELEMS(s->dc_val); i++)
-        er->dc_val[i] = s->dc_val[i];
-
-    er->decode_mb = mpeg_er_decode_mb;
-    er->opaque    = s;
-
-    return 0;
-fail:
-    av_freep(&er->er_temp_buffer);
-    av_freep(&er->error_status_table);
-    return AVERROR(ENOMEM);
+    ff_mpv_common_defaults(s);
 }
 
 /**
@@ -1068,11 +627,10 @@ static int init_context_frame(MpegEncContext *s)
     s->mb_width   = (s->width + 15) / 16;
     s->mb_stride  = s->mb_width + 1;
     s->b8_stride  = s->mb_width * 2 + 1;
-    s->b4_stride  = s->mb_width * 4 + 1;
     mb_array_size = s->mb_height * s->mb_stride;
     mv_table_size = (s->mb_height + 2) * s->mb_stride + 1;
 
-    /* set default edge pos, will be overriden
+    /* set default edge pos, will be overridden
      * in decode_header if needed */
     s->h_edge_pos = s->mb_width * 16;
     s->v_edge_pos = s->mb_height * 16;
@@ -1091,7 +649,7 @@ static int init_context_frame(MpegEncContext *s)
     yc_size = y_size + 2   * c_size;
 
     FF_ALLOCZ_OR_GOTO(s->avctx, s->mb_index2xy, (s->mb_num + 1) * sizeof(int),
-                      fail); // error ressilience code looks cleaner with this
+                      fail); // error resilience code looks cleaner with this
     for (y = 0; y < s->mb_height; y++)
         for (x = 0; x < s->mb_width; x++)
             s->mb_index2xy[x + y * s->mb_width] = x + y * s->mb_stride;
@@ -1137,7 +695,7 @@ static int init_context_frame(MpegEncContext *s)
     }
 
     if (s->codec_id == AV_CODEC_ID_MPEG4 ||
-        (s->flags & CODEC_FLAG_INTERLACED_ME)) {
+        (s->avctx->flags & AV_CODEC_FLAG_INTERLACED_ME)) {
         /* interlaced direct mode decoding tables */
         for (i = 0; i < 2; i++) {
             int j, k;
@@ -1191,9 +749,9 @@ static int init_context_frame(MpegEncContext *s)
 
     /* init macroblock skip table */
     FF_ALLOCZ_OR_GOTO(s->avctx, s->mbskip_table, mb_array_size + 2, fail);
-    // Note the + 1 is for  a quicker mpeg4 slice_end detection
+    // Note the + 1 is for  a quicker MPEG-4 slice_end detection
 
-    return init_er(s);
+    return ff_mpeg_er_init(s);
 fail:
     return AVERROR(ENOMEM);
 }
@@ -1202,7 +760,7 @@ fail:
  * init common structure for both encoder and decoder.
  * this assumes that some variables like width/height are already set
  */
-av_cold int ff_MPV_common_init(MpegEncContext *s)
+av_cold int ff_mpv_common_init(MpegEncContext *s)
 {
     int i;
     int nb_slices = (HAVE_THREADS &&
@@ -1238,10 +796,7 @@ av_cold int ff_MPV_common_init(MpegEncContext *s)
         av_image_check_size(s->width, s->height, 0, s->avctx))
         return -1;
 
-    ff_dct_common_init(s);
-
-    s->flags  = s->avctx->flags;
-    s->flags2 = s->avctx->flags2;
+    dct_init(s);
 
     /* set chroma shifts */
     av_pix_fmt_get_chroma_sub_sample(s->avctx->pix_fmt,
@@ -1251,19 +806,29 @@ av_cold int ff_MPV_common_init(MpegEncContext *s)
     /* convert fourcc to upper case */
     s->codec_tag          = avpriv_toupper4(s->avctx->codec_tag);
 
-    s->stream_codec_tag   = avpriv_toupper4(s->avctx->stream_codec_tag);
-
     FF_ALLOCZ_OR_GOTO(s->avctx, s->picture,
                       MAX_PICTURE_COUNT * sizeof(Picture), fail);
     for (i = 0; i < MAX_PICTURE_COUNT; i++) {
-        av_frame_unref(&s->picture[i].f);
+        s->picture[i].f = av_frame_alloc();
+        if (!s->picture[i].f)
+            goto fail;
     }
     memset(&s->next_picture, 0, sizeof(s->next_picture));
     memset(&s->last_picture, 0, sizeof(s->last_picture));
     memset(&s->current_picture, 0, sizeof(s->current_picture));
-    av_frame_unref(&s->next_picture.f);
-    av_frame_unref(&s->last_picture.f);
-    av_frame_unref(&s->current_picture.f);
+    memset(&s->new_picture, 0, sizeof(s->new_picture));
+    s->next_picture.f = av_frame_alloc();
+    if (!s->next_picture.f)
+        goto fail;
+    s->last_picture.f = av_frame_alloc();
+    if (!s->last_picture.f)
+        goto fail;
+    s->current_picture.f = av_frame_alloc();
+    if (!s->current_picture.f)
+        goto fail;
+    s->new_picture.f = av_frame_alloc();
+    if (!s->new_picture.f)
+        goto fail;
 
     if (s->width && s->height) {
         if (init_context_frame(s))
@@ -1301,7 +866,7 @@ av_cold int ff_MPV_common_init(MpegEncContext *s)
 
     return 0;
  fail:
-    ff_MPV_common_end(s);
+    ff_mpv_common_end(s);
     return -1;
 }
 
@@ -1310,7 +875,7 @@ av_cold int ff_MPV_common_init(MpegEncContext *s)
  * Is used during resolution changes to avoid a full reinitialization of the
  * codec.
  */
-static int free_context_frame(MpegEncContext *s)
+static void free_context_frame(MpegEncContext *s)
 {
     int i, j, k;
 
@@ -1356,11 +921,9 @@ static int free_context_frame(MpegEncContext *s)
     av_freep(&s->bits_tab);
 
     s->linesize = s->uvlinesize = 0;
-
-    return 0;
 }
 
-int ff_MPV_common_frame_size_change(MpegEncContext *s)
+int ff_mpv_common_frame_size_change(MpegEncContext *s)
 {
     int i, err = 0;
 
@@ -1374,8 +937,7 @@ int ff_MPV_common_frame_size_change(MpegEncContext *s)
     } else
         free_duplicate_context(s);
 
-    if ((err = free_context_frame(s)) < 0)
-        return err;
+    free_context_frame(s);
 
     if (s->picture)
         for (i = 0; i < MAX_PICTURE_COUNT; i++) {
@@ -1393,8 +955,8 @@ int ff_MPV_common_frame_size_change(MpegEncContext *s)
         s->mb_height = (s->height + 15) / 16;
 
     if ((s->width || s->height) &&
-        av_image_check_size(s->width, s->height, 0, s->avctx))
-        return AVERROR_INVALIDDATA;
+        (err = av_image_check_size(s->width, s->height, 0, s->avctx)) < 0)
+        goto fail;
 
     if ((err = init_context_frame(s)))
         goto fail;
@@ -1410,7 +972,7 @@ int ff_MPV_common_frame_size_change(MpegEncContext *s)
             }
 
             for (i = 0; i < nb_slices; i++) {
-                if (init_duplicate_context(s->thread_context[i]) < 0)
+                if ((err = init_duplicate_context(s->thread_context[i])) < 0)
                     goto fail;
                     s->thread_context[i]->start_mb_y =
                         (s->mb_height * (i) + nb_slices / 2) / nb_slices;
@@ -1428,12 +990,12 @@ int ff_MPV_common_frame_size_change(MpegEncContext *s)
 
     return 0;
  fail:
-    ff_MPV_common_end(s);
+    ff_mpv_common_end(s);
     return err;
 }
 
 /* init common structure for both encoder and decoder */
-void ff_MPV_common_end(MpegEncContext *s)
+void ff_mpv_common_end(MpegEncContext *s)
 {
     int i;
 
@@ -1456,16 +1018,23 @@ void ff_MPV_common_end(MpegEncContext *s)
     if (s->picture) {
         for (i = 0; i < MAX_PICTURE_COUNT; i++) {
             ff_free_picture_tables(&s->picture[i]);
-            ff_mpeg_unref_picture(s, &s->picture[i]);
+            ff_mpeg_unref_picture(s->avctx, &s->picture[i]);
+            av_frame_free(&s->picture[i].f);
         }
     }
     av_freep(&s->picture);
     ff_free_picture_tables(&s->last_picture);
-    ff_mpeg_unref_picture(s, &s->last_picture);
+    ff_mpeg_unref_picture(s->avctx, &s->last_picture);
+    av_frame_free(&s->last_picture.f);
     ff_free_picture_tables(&s->current_picture);
-    ff_mpeg_unref_picture(s, &s->current_picture);
+    ff_mpeg_unref_picture(s->avctx, &s->current_picture);
+    av_frame_free(&s->current_picture.f);
     ff_free_picture_tables(&s->next_picture);
-    ff_mpeg_unref_picture(s, &s->next_picture);
+    ff_mpeg_unref_picture(s->avctx, &s->next_picture);
+    av_frame_free(&s->next_picture.f);
+    ff_free_picture_tables(&s->new_picture);
+    ff_mpeg_unref_picture(s->avctx, &s->new_picture);
+    av_frame_free(&s->new_picture.f);
 
     free_context_frame(s);
 
@@ -1476,156 +1045,11 @@ void ff_MPV_common_end(MpegEncContext *s)
     s->linesize = s->uvlinesize = 0;
 }
 
-av_cold void ff_init_rl(RLTable *rl,
-                        uint8_t static_store[2][2 * MAX_RUN + MAX_LEVEL + 3])
-{
-    int8_t  max_level[MAX_RUN + 1], max_run[MAX_LEVEL + 1];
-    uint8_t index_run[MAX_RUN + 1];
-    int last, run, level, start, end, i;
-
-    /* If table is static, we can quit if rl->max_level[0] is not NULL */
-    if (static_store && rl->max_level[0])
-        return;
-
-    /* compute max_level[], max_run[] and index_run[] */
-    for (last = 0; last < 2; last++) {
-        if (last == 0) {
-            start = 0;
-            end = rl->last;
-        } else {
-            start = rl->last;
-            end = rl->n;
-        }
-
-        memset(max_level, 0, MAX_RUN + 1);
-        memset(max_run, 0, MAX_LEVEL + 1);
-        memset(index_run, rl->n, MAX_RUN + 1);
-        for (i = start; i < end; i++) {
-            run   = rl->table_run[i];
-            level = rl->table_level[i];
-            if (index_run[run] == rl->n)
-                index_run[run] = i;
-            if (level > max_level[run])
-                max_level[run] = level;
-            if (run > max_run[level])
-                max_run[level] = run;
-        }
-        if (static_store)
-            rl->max_level[last] = static_store[last];
-        else
-            rl->max_level[last] = av_malloc(MAX_RUN + 1);
-        memcpy(rl->max_level[last], max_level, MAX_RUN + 1);
-        if (static_store)
-            rl->max_run[last]   = static_store[last] + MAX_RUN + 1;
-        else
-            rl->max_run[last]   = av_malloc(MAX_LEVEL + 1);
-        memcpy(rl->max_run[last], max_run, MAX_LEVEL + 1);
-        if (static_store)
-            rl->index_run[last] = static_store[last] + MAX_RUN + MAX_LEVEL + 2;
-        else
-            rl->index_run[last] = av_malloc(MAX_RUN + 1);
-        memcpy(rl->index_run[last], index_run, MAX_RUN + 1);
-    }
-}
-
-av_cold void ff_init_vlc_rl(RLTable *rl)
-{
-    int i, q;
-
-    for (q = 0; q < 32; q++) {
-        int qmul = q * 2;
-        int qadd = (q - 1) | 1;
-
-        if (q == 0) {
-            qmul = 1;
-            qadd = 0;
-        }
-        for (i = 0; i < rl->vlc.table_size; i++) {
-            int code = rl->vlc.table[i][0];
-            int len  = rl->vlc.table[i][1];
-            int level, run;
-
-            if (len == 0) { // illegal code
-                run   = 66;
-                level = MAX_LEVEL;
-            } else if (len < 0) { // more bits needed
-                run   = 0;
-                level = code;
-            } else {
-                if (code == rl->n) { // esc
-                    run   = 66;
-                    level =  0;
-                } else {
-                    run   = rl->table_run[code] + 1;
-                    level = rl->table_level[code] * qmul + qadd;
-                    if (code >= rl->last) run += 192;
-                }
-            }
-            rl->rl_vlc[q][i].len   = len;
-            rl->rl_vlc[q][i].level = level;
-            rl->rl_vlc[q][i].run   = run;
-        }
-    }
-}
-
-static void release_unused_pictures(MpegEncContext *s)
-{
-    int i;
-
-    /* release non reference frames */
-    for (i = 0; i < MAX_PICTURE_COUNT; i++) {
-        if (!s->picture[i].reference)
-            ff_mpeg_unref_picture(s, &s->picture[i]);
-    }
-}
-
-static inline int pic_is_unused(MpegEncContext *s, Picture *pic)
-{
-    if (pic->f.buf[0] == NULL)
-        return 1;
-    if (pic->needs_realloc && !(pic->reference & DELAYED_PIC_REF))
-        return 1;
-    return 0;
-}
-
-static int find_unused_picture(MpegEncContext *s, int shared)
-{
-    int i;
-
-    if (shared) {
-        for (i = 0; i < MAX_PICTURE_COUNT; i++) {
-            if (s->picture[i].f.buf[0] == NULL)
-                return i;
-        }
-    } else {
-        for (i = 0; i < MAX_PICTURE_COUNT; i++) {
-            if (pic_is_unused(s, &s->picture[i]))
-                return i;
-        }
-    }
-
-    return AVERROR_INVALIDDATA;
-}
-
-int ff_find_unused_picture(MpegEncContext *s, int shared)
-{
-    int ret = find_unused_picture(s, shared);
-
-    if (ret >= 0 && ret < MAX_PICTURE_COUNT) {
-        if (s->picture[ret].needs_realloc) {
-            s->picture[ret].needs_realloc = 0;
-            ff_free_picture_tables(&s->picture[ret]);
-            ff_mpeg_unref_picture(s, &s->picture[ret]);
-        }
-    }
-    return ret;
-}
-
 /**
  * generic function called after decoding
  * the header and before a frame is decoded.
  */
-int ff_MPV_frame_start(MpegEncContext *s, AVCodecContext *avctx)
+int ff_mpv_frame_start(MpegEncContext *s, AVCodecContext *avctx)
 {
     int i, ret;
     Picture *pic;
@@ -1634,34 +1058,34 @@ int ff_MPV_frame_start(MpegEncContext *s, AVCodecContext *avctx)
     /* mark & release old frames */
     if (s->pict_type != AV_PICTURE_TYPE_B && s->last_picture_ptr &&
         s->last_picture_ptr != s->next_picture_ptr &&
-        s->last_picture_ptr->f.buf[0]) {
-        ff_mpeg_unref_picture(s, s->last_picture_ptr);
+        s->last_picture_ptr->f->buf[0]) {
+        ff_mpeg_unref_picture(s->avctx, s->last_picture_ptr);
     }
 
     /* release forgotten pictures */
-    /* if (mpeg124/h263) */
+    /* if (MPEG-124 / H.263) */
     for (i = 0; i < MAX_PICTURE_COUNT; i++) {
         if (&s->picture[i] != s->last_picture_ptr &&
             &s->picture[i] != s->next_picture_ptr &&
             s->picture[i].reference && !s->picture[i].needs_realloc) {
-            if (!(avctx->active_thread_type & FF_THREAD_FRAME))
-                av_log(avctx, AV_LOG_ERROR,
-                       "releasing zombie picture\n");
-            ff_mpeg_unref_picture(s, &s->picture[i]);
+            ff_mpeg_unref_picture(s->avctx, &s->picture[i]);
         }
     }
 
-    ff_mpeg_unref_picture(s, &s->current_picture);
+    ff_mpeg_unref_picture(s->avctx, &s->current_picture);
 
-    release_unused_pictures(s);
+    /* release non reference frames */
+    for (i = 0; i < MAX_PICTURE_COUNT; i++) {
+        if (!s->picture[i].reference)
+            ff_mpeg_unref_picture(s->avctx, &s->picture[i]);
+    }
 
-    if (s->current_picture_ptr &&
-        s->current_picture_ptr->f.buf[0] == NULL) {
+    if (s->current_picture_ptr && !s->current_picture_ptr->f->buf[0]) {
         // we already have a unused image
         // (maybe it was set before reading the header)
         pic = s->current_picture_ptr;
     } else {
-        i   = ff_find_unused_picture(s, 0);
+        i   = ff_find_unused_picture(s->avctx, s->picture, 0);
         if (i < 0) {
             av_log(s->avctx, AV_LOG_ERROR, "no frame buffer available\n");
             return i;
@@ -1675,30 +1099,30 @@ int ff_MPV_frame_start(MpegEncContext *s, AVCodecContext *avctx)
             pic->reference = 3;
     }
 
-    pic->f.coded_picture_number = s->coded_picture_number++;
+    pic->f->coded_picture_number = s->coded_picture_number++;
 
-    if (ff_alloc_picture(s, pic, 0) < 0)
+    if (alloc_picture(s, pic, 0) < 0)
         return -1;
 
     s->current_picture_ptr = pic;
     // FIXME use only the vars from current_pic
-    s->current_picture_ptr->f.top_field_first = s->top_field_first;
+    s->current_picture_ptr->f->top_field_first = s->top_field_first;
     if (s->codec_id == AV_CODEC_ID_MPEG1VIDEO ||
         s->codec_id == AV_CODEC_ID_MPEG2VIDEO) {
         if (s->picture_structure != PICT_FRAME)
-            s->current_picture_ptr->f.top_field_first =
+            s->current_picture_ptr->f->top_field_first =
                 (s->picture_structure == PICT_TOP_FIELD) == s->first_field;
     }
-    s->current_picture_ptr->f.interlaced_frame = !s->progressive_frame &&
+    s->current_picture_ptr->f->interlaced_frame = !s->progressive_frame &&
                                                  !s->progressive_sequence;
     s->current_picture_ptr->field_picture      =  s->picture_structure != PICT_FRAME;
 
-    s->current_picture_ptr->f.pict_type = s->pict_type;
-    // if (s->flags && CODEC_FLAG_QSCALE)
+    s->current_picture_ptr->f->pict_type = s->pict_type;
+    // if (s->avctx->flags && AV_CODEC_FLAG_QSCALE)
     //     s->current_picture_ptr->quality = s->new_picture_ptr->quality;
-    s->current_picture_ptr->f.key_frame = s->pict_type == AV_PICTURE_TYPE_I;
+    s->current_picture_ptr->f->key_frame = s->pict_type == AV_PICTURE_TYPE_I;
 
-    if ((ret = ff_mpeg_ref_picture(s, &s->current_picture,
+    if ((ret = ff_mpeg_ref_picture(s->avctx, &s->current_picture,
                                    s->current_picture_ptr)) < 0)
         return ret;
 
@@ -1707,15 +1131,14 @@ int ff_MPV_frame_start(MpegEncContext *s, AVCodecContext *avctx)
         if (!s->droppable)
             s->next_picture_ptr = s->current_picture_ptr;
     }
-    av_dlog(s->avctx, "L%p N%p C%p L%p N%p C%p type:%d drop:%d\n",
+    ff_dlog(s->avctx, "L%p N%p C%p L%p N%p C%p type:%d drop:%d\n",
             s->last_picture_ptr, s->next_picture_ptr,s->current_picture_ptr,
-            s->last_picture_ptr    ? s->last_picture_ptr->f.data[0]    : NULL,
-            s->next_picture_ptr    ? s->next_picture_ptr->f.data[0]    : NULL,
-            s->current_picture_ptr ? s->current_picture_ptr->f.data[0] : NULL,
+            s->last_picture_ptr    ? s->last_picture_ptr->f->data[0]    : NULL,
+            s->next_picture_ptr    ? s->next_picture_ptr->f->data[0]    : NULL,
+            s->current_picture_ptr ? s->current_picture_ptr->f->data[0] : NULL,
             s->pict_type, s->droppable);
 
-    if ((s->last_picture_ptr == NULL ||
-         s->last_picture_ptr->f.buf[0] == NULL) &&
+    if ((!s->last_picture_ptr || !s->last_picture_ptr->f->buf[0]) &&
         (s->pict_type != AV_PICTURE_TYPE_I ||
          s->picture_structure != PICT_FRAME)) {
         int h_chroma_shift, v_chroma_shift;
@@ -1729,7 +1152,7 @@ int ff_MPV_frame_start(MpegEncContext *s, AVCodecContext *avctx)
                    "allocate dummy last picture for field based first keyframe\n");
 
         /* Allocate a dummy frame */
-        i = ff_find_unused_picture(s, 0);
+        i = ff_find_unused_picture(s->avctx, s->picture, 0);
         if (i < 0) {
             av_log(s->avctx, AV_LOG_ERROR, "no frame buffer available\n");
             return i;
@@ -1737,30 +1160,29 @@ int ff_MPV_frame_start(MpegEncContext *s, AVCodecContext *avctx)
         s->last_picture_ptr = &s->picture[i];
 
         s->last_picture_ptr->reference   = 3;
-        s->last_picture_ptr->f.pict_type = AV_PICTURE_TYPE_I;
+        s->last_picture_ptr->f->pict_type = AV_PICTURE_TYPE_I;
 
-        if (ff_alloc_picture(s, s->last_picture_ptr, 0) < 0) {
+        if (alloc_picture(s, s->last_picture_ptr, 0) < 0) {
             s->last_picture_ptr = NULL;
             return -1;
         }
 
-        memset(s->last_picture_ptr->f.data[0], 0,
-               avctx->height * s->last_picture_ptr->f.linesize[0]);
-        memset(s->last_picture_ptr->f.data[1], 0x80,
+        memset(s->last_picture_ptr->f->data[0], 0,
+               avctx->height * s->last_picture_ptr->f->linesize[0]);
+        memset(s->last_picture_ptr->f->data[1], 0x80,
                (avctx->height >> v_chroma_shift) *
-               s->last_picture_ptr->f.linesize[1]);
-        memset(s->last_picture_ptr->f.data[2], 0x80,
+               s->last_picture_ptr->f->linesize[1]);
+        memset(s->last_picture_ptr->f->data[2], 0x80,
                (avctx->height >> v_chroma_shift) *
-               s->last_picture_ptr->f.linesize[2]);
+               s->last_picture_ptr->f->linesize[2]);
 
         ff_thread_report_progress(&s->last_picture_ptr->tf, INT_MAX, 0);
         ff_thread_report_progress(&s->last_picture_ptr->tf, INT_MAX, 1);
     }
-    if ((s->next_picture_ptr == NULL ||
-         s->next_picture_ptr->f.buf[0] == NULL) &&
+    if ((!s->next_picture_ptr || !s->next_picture_ptr->f->buf[0]) &&
         s->pict_type == AV_PICTURE_TYPE_B) {
         /* Allocate a dummy frame */
-        i = ff_find_unused_picture(s, 0);
+        i = ff_find_unused_picture(s->avctx, s->picture, 0);
         if (i < 0) {
             av_log(s->avctx, AV_LOG_ERROR, "no frame buffer available\n");
             return i;
@@ -1768,9 +1190,9 @@ int ff_MPV_frame_start(MpegEncContext *s, AVCodecContext *avctx)
         s->next_picture_ptr = &s->picture[i];
 
         s->next_picture_ptr->reference   = 3;
-        s->next_picture_ptr->f.pict_type = AV_PICTURE_TYPE_I;
+        s->next_picture_ptr->f->pict_type = AV_PICTURE_TYPE_I;
 
-        if (ff_alloc_picture(s, s->next_picture_ptr, 0) < 0) {
+        if (alloc_picture(s, s->next_picture_ptr, 0) < 0) {
             s->next_picture_ptr = NULL;
             return -1;
         }
@@ -1779,22 +1201,22 @@ int ff_MPV_frame_start(MpegEncContext *s, AVCodecContext *avctx)
     }
 
     if (s->last_picture_ptr) {
-        ff_mpeg_unref_picture(s, &s->last_picture);
-        if (s->last_picture_ptr->f.buf[0] &&
-            (ret = ff_mpeg_ref_picture(s, &s->last_picture,
+        ff_mpeg_unref_picture(s->avctx, &s->last_picture);
+        if (s->last_picture_ptr->f->buf[0] &&
+            (ret = ff_mpeg_ref_picture(s->avctx, &s->last_picture,
                                        s->last_picture_ptr)) < 0)
             return ret;
     }
     if (s->next_picture_ptr) {
-        ff_mpeg_unref_picture(s, &s->next_picture);
-        if (s->next_picture_ptr->f.buf[0] &&
-            (ret = ff_mpeg_ref_picture(s, &s->next_picture,
+        ff_mpeg_unref_picture(s->avctx, &s->next_picture);
+        if (s->next_picture_ptr->f->buf[0] &&
+            (ret = ff_mpeg_ref_picture(s->avctx, &s->next_picture,
                                        s->next_picture_ptr)) < 0)
             return ret;
     }
 
     if (s->pict_type != AV_PICTURE_TYPE_I &&
-        !(s->last_picture_ptr && s->last_picture_ptr->f.buf[0])) {
+        !(s->last_picture_ptr && s->last_picture_ptr->f->buf[0])) {
         av_log(s, AV_LOG_ERROR,
                "Non-reference picture received and no reference available\n");
         return AVERROR_INVALIDDATA;
@@ -1804,20 +1226,18 @@ int ff_MPV_frame_start(MpegEncContext *s, AVCodecContext *avctx)
         int i;
         for (i = 0; i < 4; i++) {
             if (s->picture_structure == PICT_BOTTOM_FIELD) {
-                s->current_picture.f.data[i] +=
-                    s->current_picture.f.linesize[i];
+                s->current_picture.f->data[i] +=
+                    s->current_picture.f->linesize[i];
             }
-            s->current_picture.f.linesize[i] *= 2;
-            s->last_picture.f.linesize[i]    *= 2;
-            s->next_picture.f.linesize[i]    *= 2;
+            s->current_picture.f->linesize[i] *= 2;
+            s->last_picture.f->linesize[i]    *= 2;
+            s->next_picture.f->linesize[i]    *= 2;
         }
     }
 
-    s->err_recognition = avctx->err_recognition;
-
     /* set dequantizer, we can't do it during init as
-     * it might change for mpeg4 and we can't do it in the header
-     * decode as init is not called for mpeg4 there yet */
+     * it might change for MPEG-4 and we can't do it in the header
+     * decode as init is not called for MPEG-4 there yet */
     if (s->mpeg_quant || s->codec_id == AV_CODEC_ID_MPEG2VIDEO) {
         s->dct_unquantize_intra = s->dct_unquantize_mpeg2_intra;
         s->dct_unquantize_inter = s->dct_unquantize_mpeg2_inter;
@@ -1840,7 +1260,7 @@ FF_ENABLE_DEPRECATION_WARNINGS
 }
 
 /* called after a frame has been decoded. */
-void ff_MPV_frame_end(MpegEncContext *s)
+void ff_mpv_frame_end(MpegEncContext *s)
 {
 #if FF_API_XVMC
 FF_DISABLE_DEPRECATION_WARNINGS
@@ -1866,7 +1286,7 @@ void ff_print_debug_info(MpegEncContext *s, Picture *p)
     AVFrame *pict;
     if (s->avctx->hwaccel || !p || !p->mb_type)
         return;
-    pict = &p->f;
+    pict = p->f;
 
     if (s->avctx->debug & (FF_DEBUG_SKIP | FF_DEBUG_QP | FF_DEBUG_MB_TYPE)) {
         int x,y;
@@ -1961,7 +1381,7 @@ void ff_print_debug_info(MpegEncContext *s, Picture *p)
 /**
  * find the lowest MB row referenced in the MVs
  */
-int ff_MPV_lowest_referenced_row(MpegEncContext *s, int dir)
+static int lowest_referenced_row(MpegEncContext *s, int dir)
 {
     int my_max = INT_MIN, my_min = INT_MAX, qpel_shift = !s->quarter_sample;
     int my, off, i, mvs;
@@ -2001,7 +1421,7 @@ static inline void put_dct(MpegEncContext *s,
                            int16_t *block, int i, uint8_t *dest, int line_size, int qscale)
 {
     s->dct_unquantize_intra(s, block, i, qscale);
-    s->dsp.idct_put (dest, line_size, block);
+    s->idsp.idct_put(dest, line_size, block);
 }
 
 /* add block[] to dest[] */
@@ -2009,7 +1429,7 @@ static inline void add_dct(MpegEncContext *s,
                            int16_t *block, int i, uint8_t *dest, int line_size)
 {
     if (s->block_last_index[i] >= 0) {
-        s->dsp.idct_add (dest, line_size, block);
+        s->idsp.idct_add(dest, line_size, block);
     }
 }
 
@@ -2019,7 +1439,7 @@ static inline void add_dequant_dct(MpegEncContext *s,
     if (s->block_last_index[i] >= 0) {
         s->dct_unquantize_inter(s, block, i, qscale);
 
-        s->dsp.idct_add (dest, line_size, block);
+        s->idsp.idct_add(dest, line_size, block);
     }
 }
 
@@ -2067,7 +1487,7 @@ void ff_clean_intra_table_entries(MpegEncContext *s)
    s->interlaced_dct : true if interlaced dct used (mpeg2)
  */
 static av_always_inline
-void MPV_decode_mb_internal(MpegEncContext *s, int16_t block[12][64],
+void mpv_decode_mb_internal(MpegEncContext *s, int16_t block[12][64],
                             int is_mpeg12)
 {
     const int mb_xy = s->mb_y * s->mb_stride + s->mb_x;
@@ -2087,7 +1507,8 @@ FF_ENABLE_DEPRECATION_WARNINGS
        av_log(s->avctx, AV_LOG_DEBUG, "DCT coeffs of MB at %dx%d:\n", s->mb_x, s->mb_y);
        for(i=0; i<6; i++){
            for(j=0; j<64; j++){
-               av_log(s->avctx, AV_LOG_DEBUG, "%5d", block[i][s->dsp.idct_permutation[j]]);
+               av_log(s->avctx, AV_LOG_DEBUG, "%5d",
+                      block[i][s->idsp.idct_permutation[j]]);
            }
            av_log(s->avctx, AV_LOG_DEBUG, "\n");
        }
@@ -2109,13 +1530,15 @@ FF_ENABLE_DEPRECATION_WARNINGS
     else if (!is_mpeg12 && (s->h263_pred || s->h263_aic))
         s->mbintra_table[mb_xy]=1;
 
-    if ((s->flags&CODEC_FLAG_PSNR) || !(s->encoding && (s->intra_only || s->pict_type==AV_PICTURE_TYPE_B) && s->avctx->mb_decision != FF_MB_DECISION_RD)) { //FIXME precalc
+    if ((s->avctx->flags & AV_CODEC_FLAG_PSNR) ||
+        !(s->encoding && (s->intra_only || s->pict_type == AV_PICTURE_TYPE_B) &&
+          s->avctx->mb_decision != FF_MB_DECISION_RD)) { // FIXME precalc
         uint8_t *dest_y, *dest_cb, *dest_cr;
         int dct_linesize, dct_offset;
         op_pixels_func (*op_pix)[4];
         qpel_mc_func (*op_qpix)[16];
-        const int linesize   = s->current_picture.f.linesize[0]; //not s->linesize as this would be wrong for field pics
-        const int uvlinesize = s->current_picture.f.linesize[1];
+        const int linesize   = s->current_picture.f->linesize[0]; //not s->linesize as this would be wrong for field pics
+        const int uvlinesize = s->current_picture.f->linesize[1];
         const int readable= s->pict_type != AV_PICTURE_TYPE_B || s->encoding || s->avctx->draw_horiz_band;
         const int block_size = 8;
 
@@ -2143,9 +1566,9 @@ FF_ENABLE_DEPRECATION_WARNINGS
             dest_cb= s->dest[1];
             dest_cr= s->dest[2];
         }else{
-            dest_y = s->b_scratchpad;
-            dest_cb= s->b_scratchpad+16*linesize;
-            dest_cr= s->b_scratchpad+32*linesize;
+            dest_y = s->sc.b_scratchpad;
+            dest_cb= s->sc.b_scratchpad+16*linesize;
+            dest_cr= s->sc.b_scratchpad+32*linesize;
         }
 
         if (!s->mb_intra) {
@@ -2156,12 +1579,12 @@ FF_ENABLE_DEPRECATION_WARNINGS
                 if(HAVE_THREADS && s->avctx->active_thread_type&FF_THREAD_FRAME) {
                     if (s->mv_dir & MV_DIR_FORWARD) {
                         ff_thread_await_progress(&s->last_picture_ptr->tf,
-                                                 ff_MPV_lowest_referenced_row(s, 0),
+                                                 lowest_referenced_row(s, 0),
                                                  0);
                     }
                     if (s->mv_dir & MV_DIR_BACKWARD) {
                         ff_thread_await_progress(&s->next_picture_ptr->tf,
-                                                 ff_MPV_lowest_referenced_row(s, 1),
+                                                 lowest_referenced_row(s, 1),
                                                  0);
                     }
                 }
@@ -2173,12 +1596,12 @@ FF_ENABLE_DEPRECATION_WARNINGS
                     op_pix = s->hdsp.put_no_rnd_pixels_tab;
                 }
                 if (s->mv_dir & MV_DIR_FORWARD) {
-                    ff_MPV_motion(s, dest_y, dest_cb, dest_cr, 0, s->last_picture.f.data, op_pix, op_qpix);
+                    ff_mpv_motion(s, dest_y, dest_cb, dest_cr, 0, s->last_picture.f->data, op_pix, op_qpix);
                     op_pix = s->hdsp.avg_pixels_tab;
                     op_qpix= s->me.qpel_avg;
                 }
                 if (s->mv_dir & MV_DIR_BACKWARD) {
-                    ff_MPV_motion(s, dest_y, dest_cb, dest_cr, 1, s->next_picture.f.data, op_pix, op_qpix);
+                    ff_mpv_motion(s, dest_y, dest_cb, dest_cr, 1, s->next_picture.f->data, op_pix, op_qpix);
                 }
             }
 
@@ -2198,7 +1621,7 @@ FF_ENABLE_DEPRECATION_WARNINGS
                 add_dequant_dct(s, block[2], 2, dest_y + dct_offset             , dct_linesize, s->qscale);
                 add_dequant_dct(s, block[3], 3, dest_y + dct_offset + block_size, dct_linesize, s->qscale);
 
-                if(!CONFIG_GRAY || !(s->flags&CODEC_FLAG_GRAY)){
+                if (!CONFIG_GRAY || !(s->avctx->flags & AV_CODEC_FLAG_GRAY)) {
                     if (s->chroma_y_shift){
                         add_dequant_dct(s, block[4], 4, dest_cb, uvlinesize, s->chroma_qscale);
                         add_dequant_dct(s, block[5], 5, dest_cr, uvlinesize, s->chroma_qscale);
@@ -2217,7 +1640,7 @@ FF_ENABLE_DEPRECATION_WARNINGS
                 add_dct(s, block[2], 2, dest_y + dct_offset             , dct_linesize);
                 add_dct(s, block[3], 3, dest_y + dct_offset + block_size, dct_linesize);
 
-                if(!CONFIG_GRAY || !(s->flags&CODEC_FLAG_GRAY)){
+                if (!CONFIG_GRAY || !(s->avctx->flags & AV_CODEC_FLAG_GRAY)) {
                     if(s->chroma_y_shift){//Chroma420
                         add_dct(s, block[4], 4, dest_cb, uvlinesize);
                         add_dct(s, block[5], 5, dest_cr, uvlinesize);
@@ -2250,7 +1673,7 @@ FF_ENABLE_DEPRECATION_WARNINGS
                 put_dct(s, block[2], 2, dest_y + dct_offset             , dct_linesize, s->qscale);
                 put_dct(s, block[3], 3, dest_y + dct_offset + block_size, dct_linesize, s->qscale);
 
-                if(!CONFIG_GRAY || !(s->flags&CODEC_FLAG_GRAY)){
+                if (!CONFIG_GRAY || !(s->avctx->flags & AV_CODEC_FLAG_GRAY)) {
                     if(s->chroma_y_shift){
                         put_dct(s, block[4], 4, dest_cb, uvlinesize, s->chroma_qscale);
                         put_dct(s, block[5], 5, dest_cr, uvlinesize, s->chroma_qscale);
@@ -2264,29 +1687,29 @@ FF_ENABLE_DEPRECATION_WARNINGS
                     }
                 }
             }else{
-                s->dsp.idct_put(dest_y                          , dct_linesize, block[0]);
-                s->dsp.idct_put(dest_y              + block_size, dct_linesize, block[1]);
-                s->dsp.idct_put(dest_y + dct_offset             , dct_linesize, block[2]);
-                s->dsp.idct_put(dest_y + dct_offset + block_size, dct_linesize, block[3]);
+                s->idsp.idct_put(dest_y,                           dct_linesize, block[0]);
+                s->idsp.idct_put(dest_y              + block_size, dct_linesize, block[1]);
+                s->idsp.idct_put(dest_y + dct_offset,              dct_linesize, block[2]);
+                s->idsp.idct_put(dest_y + dct_offset + block_size, dct_linesize, block[3]);
 
-                if(!CONFIG_GRAY || !(s->flags&CODEC_FLAG_GRAY)){
+                if (!CONFIG_GRAY || !(s->avctx->flags & AV_CODEC_FLAG_GRAY)) {
                     if(s->chroma_y_shift){
-                        s->dsp.idct_put(dest_cb, uvlinesize, block[4]);
-                        s->dsp.idct_put(dest_cr, uvlinesize, block[5]);
+                        s->idsp.idct_put(dest_cb, uvlinesize, block[4]);
+                        s->idsp.idct_put(dest_cr, uvlinesize, block[5]);
                     }else{
 
                         dct_linesize = uvlinesize << s->interlaced_dct;
                         dct_offset   = s->interlaced_dct ? uvlinesize : uvlinesize * 8;
 
-                        s->dsp.idct_put(dest_cb,              dct_linesize, block[4]);
-                        s->dsp.idct_put(dest_cr,              dct_linesize, block[5]);
-                        s->dsp.idct_put(dest_cb + dct_offset, dct_linesize, block[6]);
-                        s->dsp.idct_put(dest_cr + dct_offset, dct_linesize, block[7]);
+                        s->idsp.idct_put(dest_cb,              dct_linesize, block[4]);
+                        s->idsp.idct_put(dest_cr,              dct_linesize, block[5]);
+                        s->idsp.idct_put(dest_cb + dct_offset, dct_linesize, block[6]);
+                        s->idsp.idct_put(dest_cr + dct_offset, dct_linesize, block[7]);
                         if(!s->chroma_x_shift){//Chroma444
-                            s->dsp.idct_put(dest_cb + 8,              dct_linesize, block[8]);
-                            s->dsp.idct_put(dest_cr + 8,              dct_linesize, block[9]);
-                            s->dsp.idct_put(dest_cb + 8 + dct_offset, dct_linesize, block[10]);
-                            s->dsp.idct_put(dest_cr + 8 + dct_offset, dct_linesize, block[11]);
+                            s->idsp.idct_put(dest_cb + 8,              dct_linesize, block[8]);
+                            s->idsp.idct_put(dest_cr + 8,              dct_linesize, block[9]);
+                            s->idsp.idct_put(dest_cb + 8 + dct_offset, dct_linesize, block[10]);
+                            s->idsp.idct_put(dest_cr + 8 + dct_offset, dct_linesize, block[11]);
                         }
                     }
                 }//gray
@@ -2301,78 +1724,26 @@ skip_idct:
     }
 }
 
-void ff_MPV_decode_mb(MpegEncContext *s, int16_t block[12][64]){
+void ff_mpv_decode_mb(MpegEncContext *s, int16_t block[12][64])
+{
 #if !CONFIG_SMALL
     if(s->out_format == FMT_MPEG1) {
-        MPV_decode_mb_internal(s, block, 1);
+        mpv_decode_mb_internal(s, block, 1);
     } else
 #endif
-        MPV_decode_mb_internal(s, block, 0);
-}
-
-/**
- * @param h is the normal height, this will be reduced automatically if needed for the last row
- */
-void ff_draw_horiz_band(AVCodecContext *avctx,
-                        AVFrame *cur, AVFrame *last,
-                        int y, int h, int picture_structure,
-                        int first_field, int low_delay)
-{
-    const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(avctx->pix_fmt);
-    int vshift = desc->log2_chroma_h;
-    const int field_pic = picture_structure != PICT_FRAME;
-    if(field_pic){
-        h <<= 1;
-        y <<= 1;
-    }
-
-    h = FFMIN(h, avctx->height - y);
-
-    if(field_pic && first_field && !(avctx->slice_flags&SLICE_FLAG_ALLOW_FIELD)) return;
-
-    if (avctx->draw_horiz_band) {
-        AVFrame *src;
-        int offset[AV_NUM_DATA_POINTERS];
-        int i;
-
-        if (cur->pict_type == AV_PICTURE_TYPE_B || low_delay ||
-           (avctx->slice_flags & SLICE_FLAG_CODED_ORDER))
-            src = cur;
-        else if (last)
-            src = last;
-        else
-            return;
-
-        if (cur->pict_type == AV_PICTURE_TYPE_B &&
-            picture_structure == PICT_FRAME &&
-            avctx->codec_id != AV_CODEC_ID_SVQ3) {
-            for (i = 0; i < AV_NUM_DATA_POINTERS; i++)
-                offset[i] = 0;
-        }else{
-            offset[0]= y * src->linesize[0];
-            offset[1]=
-            offset[2]= (y >> vshift) * src->linesize[1];
-            for (i = 3; i < AV_NUM_DATA_POINTERS; i++)
-                offset[i] = 0;
-        }
-
-        emms_c();
-
-        avctx->draw_horiz_band(avctx, src, offset,
-                               y, picture_structure, h);
-    }
+        mpv_decode_mb_internal(s, block, 0);
 }
 
 void ff_mpeg_draw_horiz_band(MpegEncContext *s, int y, int h)
 {
-    ff_draw_horiz_band(s->avctx, &s->current_picture.f,
-                       &s->last_picture.f, y, h, s->picture_structure,
+    ff_draw_horiz_band(s->avctx, s->current_picture.f,
+                       s->last_picture.f, y, h, s->picture_structure,
                        s->first_field, s->low_delay);
 }
 
 void ff_init_block_index(MpegEncContext *s){ //FIXME maybe rename
-    const int linesize   = s->current_picture.f.linesize[0]; //not s->linesize as this would be wrong for field pics
-    const int uvlinesize = s->current_picture.f.linesize[1];
+    const int linesize   = s->current_picture.f->linesize[0]; //not s->linesize as this would be wrong for field pics
+    const int uvlinesize = s->current_picture.f->linesize[1];
     const int mb_size= 4;
 
     s->block_index[0]= s->b8_stride*(s->mb_y*2    ) - 2 + s->mb_x*2;
@@ -2383,9 +1754,9 @@ void ff_init_block_index(MpegEncContext *s){ //FIXME maybe rename
     s->block_index[5]= s->mb_stride*(s->mb_y + s->mb_height + 2) + s->b8_stride*s->mb_height*2 + s->mb_x - 1;
     //block_index is not used by mpeg2, so it is not affected by chroma_format
 
-    s->dest[0] = s->current_picture.f.data[0] + ((s->mb_x - 1) <<  mb_size);
-    s->dest[1] = s->current_picture.f.data[1] + ((s->mb_x - 1) << (mb_size - s->chroma_x_shift));
-    s->dest[2] = s->current_picture.f.data[2] + ((s->mb_x - 1) << (mb_size - s->chroma_x_shift));
+    s->dest[0] = s->current_picture.f->data[0] + (s->mb_x - 1) * (1 << mb_size);
+    s->dest[1] = s->current_picture.f->data[1] + (s->mb_x - 1) * (1 << (mb_size - s->chroma_x_shift));
+    s->dest[2] = s->current_picture.f->data[2] + (s->mb_x - 1) * (1 << (mb_size - s->chroma_x_shift));
 
     if(!(s->pict_type==AV_PICTURE_TYPE_B && s->avctx->draw_horiz_band && s->picture_structure==PICT_FRAME))
     {
@@ -2402,49 +1773,20 @@ void ff_init_block_index(MpegEncContext *s){ //FIXME maybe rename
     }
 }
 
-/**
- * Permute an 8x8 block.
- * @param block the block which will be permuted according to the given permutation vector
- * @param permutation the permutation vector
- * @param last the last non zero coefficient in scantable order, used to speed the permutation up
- * @param scantable the used scantable, this is only used to speed the permutation up, the block is not
- *                  (inverse) permutated to scantable order!
- */
-void ff_block_permute(int16_t *block, uint8_t *permutation, const uint8_t *scantable, int last)
-{
-    int i;
-    int16_t temp[64];
-
-    if(last<=0) return;
-    //if(permutation[1]==1) return; //FIXME it is ok but not clean and might fail for some permutations
-
-    for(i=0; i<=last; i++){
-        const int j= scantable[i];
-        temp[j]= block[j];
-        block[j]=0;
-    }
-
-    for(i=0; i<=last; i++){
-        const int j= scantable[i];
-        const int perm_j= permutation[j];
-        block[perm_j]= temp[j];
-    }
-}
-
 void ff_mpeg_flush(AVCodecContext *avctx){
     int i;
     MpegEncContext *s = avctx->priv_data;
 
-    if(s==NULL || s->picture==NULL)
+    if (!s || !s->picture)
         return;
 
     for (i = 0; i < MAX_PICTURE_COUNT; i++)
-        ff_mpeg_unref_picture(s, &s->picture[i]);
+        ff_mpeg_unref_picture(s->avctx, &s->picture[i]);
     s->current_picture_ptr = s->last_picture_ptr = s->next_picture_ptr = NULL;
 
-    ff_mpeg_unref_picture(s, &s->current_picture);
-    ff_mpeg_unref_picture(s, &s->last_picture);
-    ff_mpeg_unref_picture(s, &s->next_picture);
+    ff_mpeg_unref_picture(s->avctx, &s->current_picture);
+    ff_mpeg_unref_picture(s->avctx, &s->last_picture);
+    ff_mpeg_unref_picture(s->avctx, &s->next_picture);
 
     s->mb_x= s->mb_y= 0;
 
@@ -2475,45 +1817,8 @@ void ff_set_qscale(MpegEncContext * s, int qscale)
     s->c_dc_scale= s->c_dc_scale_table[ s->chroma_qscale ];
 }
 
-void ff_MPV_report_decode_progress(MpegEncContext *s)
+void ff_mpv_report_decode_progress(MpegEncContext *s)
 {
     if (s->pict_type != AV_PICTURE_TYPE_B && !s->partitioned_frame && !s->er.error_occurred)
         ff_thread_report_progress(&s->current_picture_ptr->tf, s->mb_y, 0);
 }
-
-#if CONFIG_ERROR_RESILIENCE
-void ff_mpeg_set_erpic(ERPicture *dst, Picture *src)
-{
-    int i;
-
-    if (!src)
-        return;
-
-    dst->f = &src->f;
-    dst->tf = &src->tf;
-
-    for (i = 0; i < 2; i++) {
-        dst->motion_val[i] = src->motion_val[i];
-        dst->ref_index[i] = src->ref_index[i];
-    }
-
-    dst->mb_type = src->mb_type;
-    dst->field_picture = src->field_picture;
-}
-
-void ff_mpeg_er_frame_start(MpegEncContext *s)
-{
-    ERContext *er = &s->er;
-
-    ff_mpeg_set_erpic(&er->cur_pic, s->current_picture_ptr);
-    ff_mpeg_set_erpic(&er->next_pic, s->next_picture_ptr);
-    ff_mpeg_set_erpic(&er->last_pic, s->last_picture_ptr);
-
-    er->pp_time           = s->pp_time;
-    er->pb_time           = s->pb_time;
-    er->quarter_sample    = s->quarter_sample;
-    er->partitioned_frame = s->partitioned_frame;
-
-    ff_er_frame_start(er);
-}
-#endif /* CONFIG_ERROR_RESILIENCE */