- int16_t *block, int n, int qscale);
-static void dct_unquantize_mpeg1_inter_c(MpegEncContext *s,
- int16_t *block, int n, int qscale);
-static void dct_unquantize_mpeg2_intra_c(MpegEncContext *s,
- int16_t *block, int n, int qscale);
-static void dct_unquantize_mpeg2_intra_bitexact(MpegEncContext *s,
- int16_t *block, int n, int qscale);
-static void dct_unquantize_mpeg2_inter_c(MpegEncContext *s,
- int16_t *block, int n, int qscale);
-static void dct_unquantize_h263_intra_c(MpegEncContext *s,
- int16_t *block, int n, int qscale);
-static void dct_unquantize_h263_inter_c(MpegEncContext *s,
- int16_t *block, int n, int qscale);
-
-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 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)