#define MB_PTYPE_VLC_BITS 6
#define MB_BTYPE_VLC_BITS 6
-static inline int mpeg1_decode_block_intra(MpegEncContext *s, DCTELEM *block, int n);
-static inline int mpeg1_decode_block_inter(MpegEncContext *s, DCTELEM *block, int n);
-static inline int mpeg1_fast_decode_block_inter(MpegEncContext *s, DCTELEM *block, int n);
-static inline int mpeg2_decode_block_non_intra(MpegEncContext *s, DCTELEM *block, int n);
-static inline int mpeg2_decode_block_intra(MpegEncContext *s, DCTELEM *block, int n);
-static inline int mpeg2_fast_decode_block_non_intra(MpegEncContext *s, DCTELEM *block, int n);
-static inline int mpeg2_fast_decode_block_intra(MpegEncContext *s, DCTELEM *block, int n);
-static int mpeg_decode_motion(MpegEncContext *s, int fcode, int pred);
-static void exchange_uv(MpegEncContext *s);
+static VLC mv_vlc;
-uint8_t ff_mpeg12_static_rl_table_store[2][2][2*MAX_RUN + MAX_LEVEL + 3];
+/* as H.263, but only 17 codes */
+static int mpeg_decode_motion(MpegEncContext *s, int fcode, int pred)
+{
+ int code, sign, val, shift;
+ code = get_vlc2(&s->gb, mv_vlc.table, MV_VLC_BITS, 2);
+ if (code == 0) {
+ return pred;
+ }
+ if (code < 0) {
+ return 0xffff;
+ }
-#define INIT_2D_VLC_RL(rl, static_size)\
-{\
- static RL_VLC_ELEM rl_vlc_table[static_size];\
- INIT_VLC_STATIC(&rl.vlc, TEX_VLC_BITS, rl.n + 2,\
- &rl.table_vlc[0][1], 4, 2,\
- &rl.table_vlc[0][0], 4, 2, static_size);\
-\
- rl.rl_vlc[0] = rl_vlc_table;\
- init_2d_vlc_rl(&rl);\
+ sign = get_bits1(&s->gb);
+ shift = fcode - 1;
+ val = code;
+ if (shift) {
+ val = (val - 1) << shift;
+ val |= get_bits(&s->gb, shift);
+ val++;
+ }
+ if (sign)
+ val = -val;
+ val += pred;
+
+ /* modulo decoding */
+ return sign_extend(val, 5 + shift);
}
-static void init_2d_vlc_rl(RLTable *rl)
+static inline int mpeg1_decode_block_intra(MpegEncContext *s, DCTELEM *block, int n)
{
- int i;
+ int level, dc, diff, i, j, run;
+ int component;
+ RLTable *rl = &ff_rl_mpeg1;
+ uint8_t * const scantable = s->intra_scantable.permutated;
+ const uint16_t *quant_matrix = s->intra_matrix;
+ const int qscale = s->qscale;
- 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;
+ /* DC coefficient */
+ component = (n <= 3 ? 0 : n - 4 + 1);
+ diff = decode_dc(&s->gb, component);
+ if (diff >= 0xffff)
+ return -1;
+ dc = s->last_dc[component];
+ dc += diff;
+ s->last_dc[component] = dc;
+ block[0] = dc * quant_matrix[0];
+ av_dlog(s->avctx, "dc=%d diff=%d\n", dc, diff);
+ i = 0;
+ {
+ OPEN_READER(re, &s->gb);
+ /* now quantify & encode AC coefficients */
+ for (;;) {
+ UPDATE_CACHE(re, &s->gb);
+ GET_RL_VLC(level, run, re, &s->gb, rl->rl_vlc[0], TEX_VLC_BITS, 2, 0);
- if (len == 0) { // illegal code
- run = 65;
- level = MAX_LEVEL;
- } else if (len<0) { //more bits needed
- run = 0;
- level = code;
- } else {
- if (code == rl->n) { //esc
- run = 65;
- level = 0;
- } else if (code == rl->n+1) { //eob
- run = 0;
- level = 127;
+ if (level == 127) {
+ break;
+ } else if (level != 0) {
+ i += run;
+ j = scantable[i];
+ level = (level * qscale * quant_matrix[j]) >> 4;
+ level = (level - 1) | 1;
+ level = (level ^ SHOW_SBITS(re, &s->gb, 1)) - SHOW_SBITS(re, &s->gb, 1);
+ LAST_SKIP_BITS(re, &s->gb, 1);
} else {
- run = rl->table_run [code] + 1;
- level = rl->table_level[code];
+ /* escape */
+ run = SHOW_UBITS(re, &s->gb, 6) + 1; LAST_SKIP_BITS(re, &s->gb, 6);
+ UPDATE_CACHE(re, &s->gb);
+ level = SHOW_SBITS(re, &s->gb, 8); SKIP_BITS(re, &s->gb, 8);
+ if (level == -128) {
+ level = SHOW_UBITS(re, &s->gb, 8) - 256; LAST_SKIP_BITS(re, &s->gb, 8);
+ } else if (level == 0) {
+ level = SHOW_UBITS(re, &s->gb, 8) ; LAST_SKIP_BITS(re, &s->gb, 8);
+ }
+ i += run;
+ j = scantable[i];
+ if (level < 0) {
+ level = -level;
+ level = (level * qscale * quant_matrix[j]) >> 4;
+ level = (level - 1) | 1;
+ level = -level;
+ } else {
+ level = (level * qscale * quant_matrix[j]) >> 4;
+ level = (level - 1) | 1;
+ }
+ }
+ if (i > 63) {
+ av_log(s->avctx, AV_LOG_ERROR, "ac-tex damaged at %d %d\n", s->mb_x, s->mb_y);
+ return -1;
}
+
+ block[j] = level;
}
- rl->rl_vlc[0][i].len = len;
- rl->rl_vlc[0][i].level = level;
- rl->rl_vlc[0][i].run = run;
+ CLOSE_READER(re, &s->gb);
}
+ s->block_last_index[n] = i;
+ return 0;
}
-void ff_mpeg12_common_init(MpegEncContext *s)
+int ff_mpeg1_decode_block_intra(MpegEncContext *s, DCTELEM *block, int n)
{
-
- s->y_dc_scale_table =
- s->c_dc_scale_table = ff_mpeg2_dc_scale_table[s->intra_dc_precision];
-
+ return mpeg1_decode_block_intra(s, block, n);
}
-void ff_mpeg1_clean_buffers(MpegEncContext *s)
+static inline int mpeg1_decode_block_inter(MpegEncContext *s, DCTELEM *block, int n)
{
- s->last_dc[0] = 1 << (7 + s->intra_dc_precision);
- s->last_dc[1] = s->last_dc[0];
- s->last_dc[2] = s->last_dc[0];
- memset(s->last_mv, 0, sizeof(s->last_mv));
-}
-
+ int level, i, j, run;
+ RLTable *rl = &ff_rl_mpeg1;
+ uint8_t * const scantable = s->intra_scantable.permutated;
+ const uint16_t *quant_matrix = s->inter_matrix;
+ const int qscale = s->qscale;
-/******************************************/
-/* decoding */
+ {
+ OPEN_READER(re, &s->gb);
+ i = -1;
+ // special case for first coefficient, no need to add second VLC table
+ UPDATE_CACHE(re, &s->gb);
+ if (((int32_t)GET_CACHE(re, &s->gb)) < 0) {
+ level = (3 * qscale * quant_matrix[0]) >> 5;
+ level = (level - 1) | 1;
+ if (GET_CACHE(re, &s->gb) & 0x40000000)
+ level = -level;
+ block[0] = level;
+ i++;
+ SKIP_BITS(re, &s->gb, 2);
+ if (((int32_t)GET_CACHE(re, &s->gb)) <= (int32_t)0xBFFFFFFF)
+ goto end;
+ }
+ /* now quantify & encode AC coefficients */
+ for (;;) {
+ GET_RL_VLC(level, run, re, &s->gb, rl->rl_vlc[0], TEX_VLC_BITS, 2, 0);
-VLC ff_dc_lum_vlc;
-VLC ff_dc_chroma_vlc;
+ if (level != 0) {
+ i += run;
+ j = scantable[i];
+ level = ((level * 2 + 1) * qscale * quant_matrix[j]) >> 5;
+ level = (level - 1) | 1;
+ level = (level ^ SHOW_SBITS(re, &s->gb, 1)) - SHOW_SBITS(re, &s->gb, 1);
+ SKIP_BITS(re, &s->gb, 1);
+ } else {
+ /* escape */
+ run = SHOW_UBITS(re, &s->gb, 6) + 1; LAST_SKIP_BITS(re, &s->gb, 6);
+ UPDATE_CACHE(re, &s->gb);
+ level = SHOW_SBITS(re, &s->gb, 8); SKIP_BITS(re, &s->gb, 8);
+ if (level == -128) {
+ level = SHOW_UBITS(re, &s->gb, 8) - 256; SKIP_BITS(re, &s->gb, 8);
+ } else if (level == 0) {
+ level = SHOW_UBITS(re, &s->gb, 8) ; SKIP_BITS(re, &s->gb, 8);
+ }
+ i += run;
+ j = scantable[i];
+ if (level < 0) {
+ level = -level;
+ level = ((level * 2 + 1) * qscale * quant_matrix[j]) >> 5;
+ level = (level - 1) | 1;
+ level = -level;
+ } else {
+ level = ((level * 2 + 1) * qscale * quant_matrix[j]) >> 5;
+ level = (level - 1) | 1;
+ }
+ }
+ if (i > 63) {
+ av_log(s->avctx, AV_LOG_ERROR, "ac-tex damaged at %d %d\n", s->mb_x, s->mb_y);
+ return -1;
+ }
-static VLC mv_vlc;
-static VLC mbincr_vlc;
-static VLC mb_ptype_vlc;
-static VLC mb_btype_vlc;
-static VLC mb_pat_vlc;
+ block[j] = level;
+ if (((int32_t)GET_CACHE(re, &s->gb)) <= (int32_t)0xBFFFFFFF)
+ break;
+ UPDATE_CACHE(re, &s->gb);
+ }
+end:
+ LAST_SKIP_BITS(re, &s->gb, 2);
+ CLOSE_READER(re, &s->gb);
+ }
+ s->block_last_index[n] = i;
+ return 0;
+}
-av_cold void ff_mpeg12_init_vlcs(void)
+static inline int mpeg1_fast_decode_block_inter(MpegEncContext *s, DCTELEM *block, int n)
{
- static int done = 0;
+ int level, i, j, run;
+ RLTable *rl = &ff_rl_mpeg1;
+ uint8_t * const scantable = s->intra_scantable.permutated;
+ const int qscale = s->qscale;
- if (!done) {
- done = 1;
+ {
+ OPEN_READER(re, &s->gb);
+ i = -1;
+ // special case for first coefficient, no need to add second VLC table
+ UPDATE_CACHE(re, &s->gb);
+ if (((int32_t)GET_CACHE(re, &s->gb)) < 0) {
+ level = (3 * qscale) >> 1;
+ level = (level - 1) | 1;
+ if (GET_CACHE(re, &s->gb) & 0x40000000)
+ level = -level;
+ block[0] = level;
+ i++;
+ SKIP_BITS(re, &s->gb, 2);
+ if (((int32_t)GET_CACHE(re, &s->gb)) <= (int32_t)0xBFFFFFFF)
+ goto end;
+ }
- INIT_VLC_STATIC(&ff_dc_lum_vlc, DC_VLC_BITS, 12,
- ff_mpeg12_vlc_dc_lum_bits, 1, 1,
- ff_mpeg12_vlc_dc_lum_code, 2, 2, 512);
- INIT_VLC_STATIC(&ff_dc_chroma_vlc, DC_VLC_BITS, 12,
- ff_mpeg12_vlc_dc_chroma_bits, 1, 1,
- ff_mpeg12_vlc_dc_chroma_code, 2, 2, 514);
- INIT_VLC_STATIC(&mv_vlc, MV_VLC_BITS, 17,
- &ff_mpeg12_mbMotionVectorTable[0][1], 2, 1,
- &ff_mpeg12_mbMotionVectorTable[0][0], 2, 1, 518);
- INIT_VLC_STATIC(&mbincr_vlc, MBINCR_VLC_BITS, 36,
- &ff_mpeg12_mbAddrIncrTable[0][1], 2, 1,
- &ff_mpeg12_mbAddrIncrTable[0][0], 2, 1, 538);
- INIT_VLC_STATIC(&mb_pat_vlc, MB_PAT_VLC_BITS, 64,
- &ff_mpeg12_mbPatTable[0][1], 2, 1,
- &ff_mpeg12_mbPatTable[0][0], 2, 1, 512);
+ /* now quantify & encode AC coefficients */
+ for (;;) {
+ GET_RL_VLC(level, run, re, &s->gb, rl->rl_vlc[0], TEX_VLC_BITS, 2, 0);
- INIT_VLC_STATIC(&mb_ptype_vlc, MB_PTYPE_VLC_BITS, 7,
- &table_mb_ptype[0][1], 2, 1,
- &table_mb_ptype[0][0], 2, 1, 64);
- INIT_VLC_STATIC(&mb_btype_vlc, MB_BTYPE_VLC_BITS, 11,
- &table_mb_btype[0][1], 2, 1,
- &table_mb_btype[0][0], 2, 1, 64);
- init_rl(&ff_rl_mpeg1, ff_mpeg12_static_rl_table_store[0]);
- init_rl(&ff_rl_mpeg2, ff_mpeg12_static_rl_table_store[1]);
+ if (level != 0) {
+ i += run;
+ j = scantable[i];
+ level = ((level * 2 + 1) * qscale) >> 1;
+ level = (level - 1) | 1;
+ level = (level ^ SHOW_SBITS(re, &s->gb, 1)) - SHOW_SBITS(re, &s->gb, 1);
+ SKIP_BITS(re, &s->gb, 1);
+ } else {
+ /* escape */
+ run = SHOW_UBITS(re, &s->gb, 6)+1; LAST_SKIP_BITS(re, &s->gb, 6);
+ UPDATE_CACHE(re, &s->gb);
+ level = SHOW_SBITS(re, &s->gb, 8); SKIP_BITS(re, &s->gb, 8);
+ if (level == -128) {
+ level = SHOW_UBITS(re, &s->gb, 8) - 256; SKIP_BITS(re, &s->gb, 8);
+ } else if (level == 0) {
+ level = SHOW_UBITS(re, &s->gb, 8) ; SKIP_BITS(re, &s->gb, 8);
+ }
+ i += run;
+ j = scantable[i];
+ if (level < 0) {
+ level = -level;
+ level = ((level * 2 + 1) * qscale) >> 1;
+ level = (level - 1) | 1;
+ level = -level;
+ } else {
+ level = ((level * 2 + 1) * qscale) >> 1;
+ level = (level - 1) | 1;
+ }
+ }
- INIT_2D_VLC_RL(ff_rl_mpeg1, 680);
- INIT_2D_VLC_RL(ff_rl_mpeg2, 674);
+ block[j] = level;
+ if (((int32_t)GET_CACHE(re, &s->gb)) <= (int32_t)0xBFFFFFFF)
+ break;
+ UPDATE_CACHE(re, &s->gb);
+ }
+end:
+ LAST_SKIP_BITS(re, &s->gb, 2);
+ CLOSE_READER(re, &s->gb);
}
+ s->block_last_index[n] = i;
+ return 0;
}
-static inline int get_dmv(MpegEncContext *s)
-{
- if (get_bits1(&s->gb))
- return 1 - (get_bits1(&s->gb) << 1);
- else
- return 0;
-}
-static inline int get_qscale(MpegEncContext *s)
+static inline int mpeg2_decode_block_non_intra(MpegEncContext *s, DCTELEM *block, int n)
{
- int qscale = get_bits(&s->gb, 5);
- if (s->q_scale_type) {
- return non_linear_qscale[qscale];
- } else {
- return qscale << 1;
- }
-}
+ int level, i, j, run;
+ RLTable *rl = &ff_rl_mpeg1;
+ uint8_t * const scantable = s->intra_scantable.permutated;
+ const uint16_t *quant_matrix;
+ const int qscale = s->qscale;
+ int mismatch;
-/* motion type (for MPEG-2) */
-#define MT_FIELD 1
-#define MT_FRAME 2
-#define MT_16X8 2
-#define MT_DMV 3
+ mismatch = 1;
-static int mpeg_decode_mb(MpegEncContext *s, DCTELEM block[12][64])
-{
- int i, j, k, cbp, val, mb_type, motion_type;
- const int mb_block_count = 4 + (1 << s->chroma_format);
+ {
+ OPEN_READER(re, &s->gb);
+ i = -1;
+ if (n < 4)
+ quant_matrix = s->inter_matrix;
+ else
+ quant_matrix = s->chroma_inter_matrix;
- av_dlog(s->avctx, "decode_mb: x=%d y=%d\n", s->mb_x, s->mb_y);
+ // special case for first coefficient, no need to add second VLC table
+ UPDATE_CACHE(re, &s->gb);
+ if (((int32_t)GET_CACHE(re, &s->gb)) < 0) {
+ level= (3 * qscale * quant_matrix[0]) >> 5;
+ if (GET_CACHE(re, &s->gb) & 0x40000000)
+ level = -level;
+ block[0] = level;
+ mismatch ^= level;
+ i++;
+ SKIP_BITS(re, &s->gb, 2);
+ if (((int32_t)GET_CACHE(re, &s->gb)) <= (int32_t)0xBFFFFFFF)
+ goto end;
+ }
- assert(s->mb_skipped == 0);
+ /* now quantify & encode AC coefficients */
+ for (;;) {
+ GET_RL_VLC(level, run, re, &s->gb, rl->rl_vlc[0], TEX_VLC_BITS, 2, 0);
- if (s->mb_skip_run-- != 0) {
- if (s->pict_type == AV_PICTURE_TYPE_P) {
- s->mb_skipped = 1;
- s->current_picture.f.mb_type[s->mb_x + s->mb_y * s->mb_stride] = MB_TYPE_SKIP | MB_TYPE_L0 | MB_TYPE_16x16;
- } else {
- int mb_type;
+ if (level != 0) {
+ i += run;
+ j = scantable[i];
+ level = ((level * 2 + 1) * qscale * quant_matrix[j]) >> 5;
+ level = (level ^ SHOW_SBITS(re, &s->gb, 1)) - SHOW_SBITS(re, &s->gb, 1);
+ SKIP_BITS(re, &s->gb, 1);
+ } else {
+ /* escape */
+ run = SHOW_UBITS(re, &s->gb, 6) + 1; LAST_SKIP_BITS(re, &s->gb, 6);
+ UPDATE_CACHE(re, &s->gb);
+ level = SHOW_SBITS(re, &s->gb, 12); SKIP_BITS(re, &s->gb, 12);
- if (s->mb_x)
- mb_type = s->current_picture.f.mb_type[s->mb_x + s->mb_y * s->mb_stride - 1];
- else
- mb_type = s->current_picture.f.mb_type[s->mb_width + (s->mb_y - 1) * s->mb_stride - 1]; // FIXME not sure if this is allowed in MPEG at all
- if (IS_INTRA(mb_type))
+ i += run;
+ j = scantable[i];
+ if (level < 0) {
+ level = ((-level * 2 + 1) * qscale * quant_matrix[j]) >> 5;
+ level = -level;
+ } else {
+ level = ((level * 2 + 1) * qscale * quant_matrix[j]) >> 5;
+ }
+ }
+ if (i > 63) {
+ av_log(s->avctx, AV_LOG_ERROR, "ac-tex damaged at %d %d\n", s->mb_x, s->mb_y);
return -1;
+ }
- s->current_picture.f.mb_type[s->mb_x + s->mb_y*s->mb_stride] =
- mb_type | MB_TYPE_SKIP;
-// assert(s->current_picture.f.mb_type[s->mb_x + s->mb_y * s->mb_stride - 1] & (MB_TYPE_16x16 | MB_TYPE_16x8));
-
- if ((s->mv[0][0][0] | s->mv[0][0][1] | s->mv[1][0][0] | s->mv[1][0][1]) == 0)
- s->mb_skipped = 1;
+ mismatch ^= level;
+ block[j] = level;
+ if (((int32_t)GET_CACHE(re, &s->gb)) <= (int32_t)0xBFFFFFFF)
+ break;
+ UPDATE_CACHE(re, &s->gb);
}
-
- return 0;
+end:
+ LAST_SKIP_BITS(re, &s->gb, 2);
+ CLOSE_READER(re, &s->gb);
}
+ block[63] ^= (mismatch & 1);
- switch (s->pict_type) {
- default:
- case AV_PICTURE_TYPE_I:
- if (get_bits1(&s->gb) == 0) {
- if (get_bits1(&s->gb) == 0) {
- av_log(s->avctx, AV_LOG_ERROR, "invalid mb type in I Frame at %d %d\n", s->mb_x, s->mb_y);
- return -1;
- }
- mb_type = MB_TYPE_QUANT | MB_TYPE_INTRA;
- } else {
- mb_type = MB_TYPE_INTRA;
- }
- break;
- case AV_PICTURE_TYPE_P:
- mb_type = get_vlc2(&s->gb, mb_ptype_vlc.table, MB_PTYPE_VLC_BITS, 1);
- if (mb_type < 0) {
- av_log(s->avctx, AV_LOG_ERROR, "invalid mb type in P Frame at %d %d\n", s->mb_x, s->mb_y);
- return -1;
- }
- mb_type = ptype2mb_type[mb_type];
- break;
- case AV_PICTURE_TYPE_B:
- mb_type = get_vlc2(&s->gb, mb_btype_vlc.table, MB_BTYPE_VLC_BITS, 1);
- if (mb_type < 0) {
- av_log(s->avctx, AV_LOG_ERROR, "invalid mb type in B Frame at %d %d\n", s->mb_x, s->mb_y);
- return -1;
- }
- mb_type = btype2mb_type[mb_type];
- break;
- }
- av_dlog(s->avctx, "mb_type=%x\n", mb_type);
-// motion_type = 0; /* avoid warning */
- if (IS_INTRA(mb_type)) {
- s->dsp.clear_blocks(s->block[0]);
+ s->block_last_index[n] = i;
+ return 0;
+}
- if (!s->chroma_y_shift) {
- s->dsp.clear_blocks(s->block[6]);
- }
+static inline int mpeg2_fast_decode_block_non_intra(MpegEncContext *s,
+ DCTELEM *block, int n)
+{
+ int level, i, j, run;
+ RLTable *rl = &ff_rl_mpeg1;
+ uint8_t * const scantable = s->intra_scantable.permutated;
+ const int qscale = s->qscale;
+ OPEN_READER(re, &s->gb);
+ i = -1;
- /* compute DCT type */
- if (s->picture_structure == PICT_FRAME && // FIXME add an interlaced_dct coded var?
- !s->frame_pred_frame_dct) {
- s->interlaced_dct = get_bits1(&s->gb);
- }
+ // special case for first coefficient, no need to add second VLC table
+ UPDATE_CACHE(re, &s->gb);
+ if (((int32_t)GET_CACHE(re, &s->gb)) < 0) {
+ level = (3 * qscale) >> 1;
+ if (GET_CACHE(re, &s->gb) & 0x40000000)
+ level = -level;
+ block[0] = level;
+ i++;
+ SKIP_BITS(re, &s->gb, 2);
+ if (((int32_t)GET_CACHE(re, &s->gb)) <= (int32_t)0xBFFFFFFF)
+ goto end;
+ }
- if (IS_QUANT(mb_type))
- s->qscale = get_qscale(s);
+ /* now quantify & encode AC coefficients */
+ for (;;) {
+ GET_RL_VLC(level, run, re, &s->gb, rl->rl_vlc[0], TEX_VLC_BITS, 2, 0);
- if (s->concealment_motion_vectors) {
- /* just parse them */
- if (s->picture_structure != PICT_FRAME)
- skip_bits1(&s->gb); /* field select */
+ if (level != 0) {
+ i += run;
+ j = scantable[i];
+ level = ((level * 2 + 1) * qscale) >> 1;
+ level = (level ^ SHOW_SBITS(re, &s->gb, 1)) - SHOW_SBITS(re, &s->gb, 1);
+ SKIP_BITS(re, &s->gb, 1);
+ } else {
+ /* escape */
+ run = SHOW_UBITS(re, &s->gb, 6) + 1; LAST_SKIP_BITS(re, &s->gb, 6);
+ UPDATE_CACHE(re, &s->gb);
+ level = SHOW_SBITS(re, &s->gb, 12); SKIP_BITS(re, &s->gb, 12);
- s->mv[0][0][0]= s->last_mv[0][0][0]= s->last_mv[0][1][0] =
- mpeg_decode_motion(s, s->mpeg_f_code[0][0], s->last_mv[0][0][0]);
- s->mv[0][0][1]= s->last_mv[0][0][1]= s->last_mv[0][1][1] =
- mpeg_decode_motion(s, s->mpeg_f_code[0][1], s->last_mv[0][0][1]);
+ i += run;
+ j = scantable[i];
+ if (level < 0) {
+ level = ((-level * 2 + 1) * qscale) >> 1;
+ level = -level;
+ } else {
+ level = ((level * 2 + 1) * qscale) >> 1;
+ }
+ }
- skip_bits1(&s->gb); /* marker */
- } else
- memset(s->last_mv, 0, sizeof(s->last_mv)); /* reset mv prediction */
- s->mb_intra = 1;
- // if 1, we memcpy blocks in xvmcvideo
- if (CONFIG_MPEG_XVMC_DECODER && s->avctx->xvmc_acceleration > 1) {
- ff_xvmc_pack_pblocks(s, -1); // inter are always full blocks
- if (s->swap_uv) {
- exchange_uv(s);
- }
- }
+ block[j] = level;
+ if (((int32_t)GET_CACHE(re, &s->gb)) <= (int32_t)0xBFFFFFFF)
+ break;
+ UPDATE_CACHE(re, &s->gb);
+ }
+end:
+ LAST_SKIP_BITS(re, &s->gb, 2);
+ CLOSE_READER(re, &s->gb);
+ s->block_last_index[n] = i;
+ return 0;
+}
- if (s->codec_id == CODEC_ID_MPEG2VIDEO) {
- if (s->flags2 & CODEC_FLAG2_FAST) {
- for (i = 0; i < 6; i++) {
- mpeg2_fast_decode_block_intra(s, *s->pblocks[i], i);
- }
+
+static inline int mpeg2_decode_block_intra(MpegEncContext *s, DCTELEM *block, int n)
+{
+ int level, dc, diff, i, j, run;
+ int component;
+ RLTable *rl;
+ uint8_t * const scantable = s->intra_scantable.permutated;
+ const uint16_t *quant_matrix;
+ const int qscale = s->qscale;
+ int mismatch;
+
+ /* DC coefficient */
+ if (n < 4) {
+ quant_matrix = s->intra_matrix;
+ component = 0;
+ } else {
+ quant_matrix = s->chroma_intra_matrix;
+ component = (n & 1) + 1;
+ }
+ diff = decode_dc(&s->gb, component);
+ if (diff >= 0xffff)
+ return -1;
+ dc = s->last_dc[component];
+ dc += diff;
+ s->last_dc[component] = dc;
+ block[0] = dc << (3 - s->intra_dc_precision);
+ av_dlog(s->avctx, "dc=%d\n", block[0]);
+ mismatch = block[0] ^ 1;
+ i = 0;
+ if (s->intra_vlc_format)
+ rl = &ff_rl_mpeg2;
+ else
+ rl = &ff_rl_mpeg1;
+
+ {
+ OPEN_READER(re, &s->gb);
+ /* now quantify & encode AC coefficients */
+ for (;;) {
+ UPDATE_CACHE(re, &s->gb);
+ GET_RL_VLC(level, run, re, &s->gb, rl->rl_vlc[0], TEX_VLC_BITS, 2, 0);
+
+ if (level == 127) {
+ break;
+ } else if (level != 0) {
+ i += run;
+ j = scantable[i];
+ level = (level * qscale * quant_matrix[j]) >> 4;
+ level = (level ^ SHOW_SBITS(re, &s->gb, 1)) - SHOW_SBITS(re, &s->gb, 1);
+ LAST_SKIP_BITS(re, &s->gb, 1);
} else {
- for (i = 0; i < mb_block_count; i++) {
- if (mpeg2_decode_block_intra(s, *s->pblocks[i], i) < 0)
- return -1;
+ /* escape */
+ run = SHOW_UBITS(re, &s->gb, 6) + 1; LAST_SKIP_BITS(re, &s->gb, 6);
+ UPDATE_CACHE(re, &s->gb);
+ level = SHOW_SBITS(re, &s->gb, 12); SKIP_BITS(re, &s->gb, 12);
+ i += run;
+ j = scantable[i];
+ if (level < 0) {
+ level = (-level * qscale * quant_matrix[j]) >> 4;
+ level = -level;
+ } else {
+ level = (level * qscale * quant_matrix[j]) >> 4;
}
}
- } else {
- for (i = 0; i < 6; i++) {
- if (mpeg1_decode_block_intra(s, *s->pblocks[i], i) < 0)
- return -1;
+ if (i > 63) {
+ av_log(s->avctx, AV_LOG_ERROR, "ac-tex damaged at %d %d\n", s->mb_x, s->mb_y);
+ return -1;
}
+
+ mismatch ^= level;
+ block[j] = level;
}
+ CLOSE_READER(re, &s->gb);
+ }
+ block[63] ^= mismatch & 1;
+
+ s->block_last_index[n] = i;
+ return 0;
+}
+
+static inline int mpeg2_fast_decode_block_intra(MpegEncContext *s, DCTELEM *block, int n)
+{
+ int level, dc, diff, j, run;
+ int component;
+ RLTable *rl;
+ uint8_t * scantable = s->intra_scantable.permutated;
+ const uint16_t *quant_matrix;
+ const int qscale = s->qscale;
+
+ /* DC coefficient */
+ if (n < 4) {
+ quant_matrix = s->intra_matrix;
+ component = 0;
} else {
- if (mb_type & MB_TYPE_ZERO_MV) {
- assert(mb_type & MB_TYPE_CBP);
+ quant_matrix = s->chroma_intra_matrix;
+ component = (n & 1) + 1;
+ }
+ diff = decode_dc(&s->gb, component);
+ if (diff >= 0xffff)
+ return -1;
+ dc = s->last_dc[component];
+ dc += diff;
+ s->last_dc[component] = dc;
+ block[0] = dc << (3 - s->intra_dc_precision);
+ if (s->intra_vlc_format)
+ rl = &ff_rl_mpeg2;
+ else
+ rl = &ff_rl_mpeg1;
- s->mv_dir = MV_DIR_FORWARD;
- if (s->picture_structure == PICT_FRAME) {
- if (!s->frame_pred_frame_dct)
- s->interlaced_dct = get_bits1(&s->gb);
- s->mv_type = MV_TYPE_16X16;
+ {
+ OPEN_READER(re, &s->gb);
+ /* now quantify & encode AC coefficients */
+ for (;;) {
+ UPDATE_CACHE(re, &s->gb);
+ GET_RL_VLC(level, run, re, &s->gb, rl->rl_vlc[0], TEX_VLC_BITS, 2, 0);
+
+ if (level == 127) {
+ break;
+ } else if (level != 0) {
+ scantable += run;
+ j = *scantable;
+ level = (level * qscale * quant_matrix[j]) >> 4;
+ level = (level ^ SHOW_SBITS(re, &s->gb, 1)) - SHOW_SBITS(re, &s->gb, 1);
+ LAST_SKIP_BITS(re, &s->gb, 1);
} else {
- s->mv_type = MV_TYPE_FIELD;
- mb_type |= MB_TYPE_INTERLACED;
- s->field_select[0][0] = s->picture_structure - 1;
+ /* escape */
+ run = SHOW_UBITS(re, &s->gb, 6) + 1; LAST_SKIP_BITS(re, &s->gb, 6);
+ UPDATE_CACHE(re, &s->gb);
+ level = SHOW_SBITS(re, &s->gb, 12); SKIP_BITS(re, &s->gb, 12);
+ scantable += run;
+ j = *scantable;
+ if (level < 0) {
+ level = (-level * qscale * quant_matrix[j]) >> 4;
+ level = -level;
+ } else {
+ level = (level * qscale * quant_matrix[j]) >> 4;
+ }
}
- if (IS_QUANT(mb_type))
- s->qscale = get_qscale(s);
+ block[j] = level;
+ }
+ CLOSE_READER(re, &s->gb);
+ }
- s->last_mv[0][0][0] = 0;
- s->last_mv[0][0][1] = 0;
- s->last_mv[0][1][0] = 0;
- s->last_mv[0][1][1] = 0;
- s->mv[0][0][0] = 0;
- s->mv[0][0][1] = 0;
+ s->block_last_index[n] = scantable - s->intra_scantable.permutated;
+ return 0;
+}
+
+uint8_t ff_mpeg12_static_rl_table_store[2][2][2*MAX_RUN + MAX_LEVEL + 3];
+
+#define INIT_2D_VLC_RL(rl, static_size)\
+{\
+ static RL_VLC_ELEM rl_vlc_table[static_size];\
+ INIT_VLC_STATIC(&rl.vlc, TEX_VLC_BITS, rl.n + 2,\
+ &rl.table_vlc[0][1], 4, 2,\
+ &rl.table_vlc[0][0], 4, 2, static_size);\
+\
+ rl.rl_vlc[0] = rl_vlc_table;\
+ init_2d_vlc_rl(&rl);\
+}
+
+static void init_2d_vlc_rl(RLTable *rl)
+{
+ int i;
+
+ 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 = 65;
+ level = MAX_LEVEL;
+ } else if (len<0) { //more bits needed
+ run = 0;
+ level = code;
} else {
- assert(mb_type & MB_TYPE_L0L1);
- // FIXME decide if MBs in field pictures are MB_TYPE_INTERLACED
- /* get additional motion vector type */
- if (s->frame_pred_frame_dct)
- motion_type = MT_FRAME;
- else {
- motion_type = get_bits(&s->gb, 2);
- if (s->picture_structure == PICT_FRAME && HAS_CBP(mb_type))
- s->interlaced_dct = get_bits1(&s->gb);
+ if (code == rl->n) { //esc
+ run = 65;
+ level = 0;
+ } else if (code == rl->n+1) { //eob
+ run = 0;
+ level = 127;
+ } else {
+ run = rl->table_run [code] + 1;
+ level = rl->table_level[code];
}
+ }
+ rl->rl_vlc[0][i].len = len;
+ rl->rl_vlc[0][i].level = level;
+ rl->rl_vlc[0][i].run = run;
+ }
+}
- if (IS_QUANT(mb_type))
- s->qscale = get_qscale(s);
-
- /* motion vectors */
- s->mv_dir = (mb_type >> 13) & 3;
- av_dlog(s->avctx, "motion_type=%d\n", motion_type);
- switch (motion_type) {
- case MT_FRAME: /* or MT_16X8 */
- if (s->picture_structure == PICT_FRAME) {
- mb_type |= MB_TYPE_16x16;
- s->mv_type = MV_TYPE_16X16;
- for (i = 0; i < 2; i++) {
- if (USES_LIST(mb_type, i)) {
- /* MT_FRAME */
- s->mv[i][0][0]= s->last_mv[i][0][0]= s->last_mv[i][1][0] =
- mpeg_decode_motion(s, s->mpeg_f_code[i][0], s->last_mv[i][0][0]);
- 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 (s->full_pel[i]) {
- s->mv[i][0][0] <<= 1;
- s->mv[i][0][1] <<= 1;
- }
- }
- }
- } else {
- mb_type |= MB_TYPE_16x8 | MB_TYPE_INTERLACED;
- s->mv_type = MV_TYPE_16X8;
- for (i = 0; i < 2; i++) {
- if (USES_LIST(mb_type, i)) {
- /* MT_16X8 */
- for (j = 0; j < 2; j++) {
- s->field_select[i][j] = get_bits1(&s->gb);
- for (k = 0; k < 2; k++) {
- val = mpeg_decode_motion(s, s->mpeg_f_code[i][k],
- s->last_mv[i][j][k]);
- s->last_mv[i][j][k] = val;
- s->mv[i][j][k] = val;
- }
- }
- }
- }
- }
- break;
- case MT_FIELD:
- if(s->progressive_sequence){
- av_log(s->avctx, AV_LOG_ERROR, "MT_FIELD in progressive_sequence\n");
- return -1;
- }
- s->mv_type = MV_TYPE_FIELD;
- if (s->picture_structure == PICT_FRAME) {
- mb_type |= MB_TYPE_16x8 | MB_TYPE_INTERLACED;
- for (i = 0; i < 2; i++) {
- if (USES_LIST(mb_type, i)) {
- for (j = 0; j < 2; j++) {
- s->field_select[i][j] = get_bits1(&s->gb);
- val = mpeg_decode_motion(s, s->mpeg_f_code[i][0],
- s->last_mv[i][j][0]);
- s->last_mv[i][j][0] = val;
- s->mv[i][j][0] = val;
- av_dlog(s->avctx, "fmx=%d\n", val);
- val = mpeg_decode_motion(s, s->mpeg_f_code[i][1],
- s->last_mv[i][j][1] >> 1);
- s->last_mv[i][j][1] = val << 1;
- s->mv[i][j][1] = val;
- av_dlog(s->avctx, "fmy=%d\n", val);
- }
- }
- }
- } else {
- mb_type |= MB_TYPE_16x16 | MB_TYPE_INTERLACED;
- for (i = 0; i < 2; i++) {
- if (USES_LIST(mb_type, i)) {
- s->field_select[i][0] = get_bits1(&s->gb);
- for (k = 0; k < 2; k++) {
- val = mpeg_decode_motion(s, s->mpeg_f_code[i][k],
- s->last_mv[i][0][k]);
- s->last_mv[i][0][k] = val;
- s->last_mv[i][1][k] = val;
- s->mv[i][0][k] = val;
- }
- }
- }
- }
- break;
- case MT_DMV:
- if(s->progressive_sequence){
- av_log(s->avctx, AV_LOG_ERROR, "MT_DMV in progressive_sequence\n");
- return -1;
- }
- s->mv_type = MV_TYPE_DMV;
- for (i = 0; i < 2; i++) {
- if (USES_LIST(mb_type, i)) {
- int dmx, dmy, mx, my, m;
- const int my_shift = s->picture_structure == PICT_FRAME;
-
- mx = mpeg_decode_motion(s, s->mpeg_f_code[i][0],
- s->last_mv[i][0][0]);
- s->last_mv[i][0][0] = mx;
- s->last_mv[i][1][0] = mx;
- dmx = get_dmv(s);
- my = mpeg_decode_motion(s, s->mpeg_f_code[i][1],
- s->last_mv[i][0][1] >> my_shift);
- dmy = get_dmv(s);
+void ff_mpeg12_common_init(MpegEncContext *s)
+{
+ s->y_dc_scale_table =
+ s->c_dc_scale_table = ff_mpeg2_dc_scale_table[s->intra_dc_precision];
- s->last_mv[i][0][1] = my << my_shift;
- s->last_mv[i][1][1] = my << my_shift;
+}
- s->mv[i][0][0] = mx;
- s->mv[i][0][1] = my;
- s->mv[i][1][0] = mx; // not used
- s->mv[i][1][1] = my; // not used
+void ff_mpeg1_clean_buffers(MpegEncContext *s)
+{
+ s->last_dc[0] = 1 << (7 + s->intra_dc_precision);
+ s->last_dc[1] = s->last_dc[0];
+ s->last_dc[2] = s->last_dc[0];
+ memset(s->last_mv, 0, sizeof(s->last_mv));
+}
- if (s->picture_structure == PICT_FRAME) {
- mb_type |= MB_TYPE_16x16 | MB_TYPE_INTERLACED;
- // m = 1 + 2 * s->top_field_first;
- m = s->top_field_first ? 1 : 3;
+/******************************************/
+/* decoding */
- /* top -> top pred */
- s->mv[i][2][0] = ((mx * m + (mx > 0)) >> 1) + dmx;
- s->mv[i][2][1] = ((my * m + (my > 0)) >> 1) + dmy - 1;
- m = 4 - m;
- s->mv[i][3][0] = ((mx * m + (mx > 0)) >> 1) + dmx;
- s->mv[i][3][1] = ((my * m + (my > 0)) >> 1) + dmy + 1;
- } else {
- mb_type |= MB_TYPE_16x16;
+VLC ff_dc_lum_vlc;
+VLC ff_dc_chroma_vlc;
- s->mv[i][2][0] = ((mx + (mx > 0)) >> 1) + dmx;
- s->mv[i][2][1] = ((my + (my > 0)) >> 1) + dmy;
- if (s->picture_structure == PICT_TOP_FIELD)
- s->mv[i][2][1]--;
- else
- s->mv[i][2][1]++;
- }
- }
- }
- break;
- default:
- av_log(s->avctx, AV_LOG_ERROR, "00 motion_type at %d %d\n", s->mb_x, s->mb_y);
- return -1;
- }
- }
+static VLC mbincr_vlc;
+static VLC mb_ptype_vlc;
+static VLC mb_btype_vlc;
+static VLC mb_pat_vlc;
- s->mb_intra = 0;
- if (HAS_CBP(mb_type)) {
- s->dsp.clear_blocks(s->block[0]);
+av_cold void ff_mpeg12_init_vlcs(void)
+{
+ static int done = 0;
- cbp = get_vlc2(&s->gb, mb_pat_vlc.table, MB_PAT_VLC_BITS, 1);
- if (mb_block_count > 6) {
- cbp <<= mb_block_count - 6;
- cbp |= get_bits(&s->gb, mb_block_count - 6);
- s->dsp.clear_blocks(s->block[6]);
- }
- if (cbp <= 0) {
- av_log(s->avctx, AV_LOG_ERROR, "invalid cbp at %d %d\n", s->mb_x, s->mb_y);
- return -1;
- }
+ if (!done) {
+ done = 1;
- //if 1, we memcpy blocks in xvmcvideo
- if (CONFIG_MPEG_XVMC_DECODER && s->avctx->xvmc_acceleration > 1) {
- ff_xvmc_pack_pblocks(s, cbp);
- if (s->swap_uv) {
- exchange_uv(s);
- }
- }
+ INIT_VLC_STATIC(&ff_dc_lum_vlc, DC_VLC_BITS, 12,
+ ff_mpeg12_vlc_dc_lum_bits, 1, 1,
+ ff_mpeg12_vlc_dc_lum_code, 2, 2, 512);
+ INIT_VLC_STATIC(&ff_dc_chroma_vlc, DC_VLC_BITS, 12,
+ ff_mpeg12_vlc_dc_chroma_bits, 1, 1,
+ ff_mpeg12_vlc_dc_chroma_code, 2, 2, 514);
+ INIT_VLC_STATIC(&mv_vlc, MV_VLC_BITS, 17,
+ &ff_mpeg12_mbMotionVectorTable[0][1], 2, 1,
+ &ff_mpeg12_mbMotionVectorTable[0][0], 2, 1, 518);
+ INIT_VLC_STATIC(&mbincr_vlc, MBINCR_VLC_BITS, 36,
+ &ff_mpeg12_mbAddrIncrTable[0][1], 2, 1,
+ &ff_mpeg12_mbAddrIncrTable[0][0], 2, 1, 538);
+ INIT_VLC_STATIC(&mb_pat_vlc, MB_PAT_VLC_BITS, 64,
+ &ff_mpeg12_mbPatTable[0][1], 2, 1,
+ &ff_mpeg12_mbPatTable[0][0], 2, 1, 512);
- if (s->codec_id == CODEC_ID_MPEG2VIDEO) {
- if (s->flags2 & CODEC_FLAG2_FAST) {
- for (i = 0; i < 6; i++) {
- if (cbp & 32) {
- mpeg2_fast_decode_block_non_intra(s, *s->pblocks[i], i);
- } else {
- s->block_last_index[i] = -1;
- }
- cbp += cbp;
- }
- } else {
- cbp <<= 12-mb_block_count;
+ INIT_VLC_STATIC(&mb_ptype_vlc, MB_PTYPE_VLC_BITS, 7,
+ &table_mb_ptype[0][1], 2, 1,
+ &table_mb_ptype[0][0], 2, 1, 64);
+ INIT_VLC_STATIC(&mb_btype_vlc, MB_BTYPE_VLC_BITS, 11,
+ &table_mb_btype[0][1], 2, 1,
+ &table_mb_btype[0][0], 2, 1, 64);
+ init_rl(&ff_rl_mpeg1, ff_mpeg12_static_rl_table_store[0]);
+ init_rl(&ff_rl_mpeg2, ff_mpeg12_static_rl_table_store[1]);
- for (i = 0; i < mb_block_count; i++) {
- if (cbp & (1 << 11)) {
- if (mpeg2_decode_block_non_intra(s, *s->pblocks[i], i) < 0)
- return -1;
- } else {
- s->block_last_index[i] = -1;
- }
- cbp += cbp;
- }
- }
- } else {
- if (s->flags2 & CODEC_FLAG2_FAST) {
- for (i = 0; i < 6; i++) {
- if (cbp & 32) {
- mpeg1_fast_decode_block_inter(s, *s->pblocks[i], i);
- } else {
- s->block_last_index[i] = -1;
- }
- cbp += cbp;
- }
- } else {
- for (i = 0; i < 6; i++) {
- if (cbp & 32) {
- if (mpeg1_decode_block_inter(s, *s->pblocks[i], i) < 0)
- return -1;
- } else {
- s->block_last_index[i] = -1;
- }
- cbp += cbp;
- }
- }
- }
- } else {
- for (i = 0; i < 12; i++)
- s->block_last_index[i] = -1;
- }
+ INIT_2D_VLC_RL(ff_rl_mpeg1, 680);
+ INIT_2D_VLC_RL(ff_rl_mpeg2, 674);
}
-
- s->current_picture.f.mb_type[s->mb_x + s->mb_y * s->mb_stride] = mb_type;
-
- return 0;
}
-/* as H.263, but only 17 codes */
-static int mpeg_decode_motion(MpegEncContext *s, int fcode, int pred)
+static inline int get_dmv(MpegEncContext *s)
{
- int code, sign, val, l, shift;
+ if (get_bits1(&s->gb))
+ return 1 - (get_bits1(&s->gb) << 1);
+ else
+ return 0;
+}
- code = get_vlc2(&s->gb, mv_vlc.table, MV_VLC_BITS, 2);
- if (code == 0) {
- return pred;
- }
- if (code < 0) {
- return 0xffff;
+static inline int get_qscale(MpegEncContext *s)
+{
+ int qscale = get_bits(&s->gb, 5);
+ if (s->q_scale_type) {
+ return non_linear_qscale[qscale];
+ } else {
+ return qscale << 1;
}
+}
- sign = get_bits1(&s->gb);
- shift = fcode - 1;
- val = code;
- if (shift) {
- val = (val - 1) << shift;
- val |= get_bits(&s->gb, shift);
- val++;
- }
- if (sign)
- val = -val;
- val += pred;
+static void exchange_uv(MpegEncContext *s)
+{
+ DCTELEM (*tmp)[64];
- /* modulo decoding */
- l = INT_BIT - 5 - shift;
- val = (val << l) >> l;
- return val;
+ tmp = s->pblocks[4];
+ s->pblocks[4] = s->pblocks[5];
+ s->pblocks[5] = tmp;
}
-static inline int mpeg1_decode_block_intra(MpegEncContext *s, DCTELEM *block, int n)
-{
- int level, dc, diff, i, j, run;
- int component;
- RLTable *rl = &ff_rl_mpeg1;
- uint8_t * const scantable = s->intra_scantable.permutated;
- const uint16_t *quant_matrix = s->intra_matrix;
- const int qscale = s->qscale;
+/* motion type (for MPEG-2) */
+#define MT_FIELD 1
+#define MT_FRAME 2
+#define MT_16X8 2
+#define MT_DMV 3
- /* DC coefficient */
- component = (n <= 3 ? 0 : n - 4 + 1);
- diff = decode_dc(&s->gb, component);
- if (diff >= 0xffff)
- return -1;
- dc = s->last_dc[component];
- dc += diff;
- s->last_dc[component] = dc;
- block[0] = dc * quant_matrix[0];
- av_dlog(s->avctx, "dc=%d diff=%d\n", dc, diff);
- i = 0;
- {
- OPEN_READER(re, &s->gb);
- /* now quantify & encode AC coefficients */
- for (;;) {
- UPDATE_CACHE(re, &s->gb);
- GET_RL_VLC(level, run, re, &s->gb, rl->rl_vlc[0], TEX_VLC_BITS, 2, 0);
+static int mpeg_decode_mb(MpegEncContext *s, DCTELEM block[12][64])
+{
+ int i, j, k, cbp, val, mb_type, motion_type;
+ const int mb_block_count = 4 + (1 << s->chroma_format);
- if (level == 127) {
- break;
- } else if (level != 0) {
- i += run;
- j = scantable[i];
- level = (level * qscale * quant_matrix[j]) >> 4;
- level = (level - 1) | 1;
- level = (level ^ SHOW_SBITS(re, &s->gb, 1)) - SHOW_SBITS(re, &s->gb, 1);
- LAST_SKIP_BITS(re, &s->gb, 1);
- } else {
- /* escape */
- run = SHOW_UBITS(re, &s->gb, 6) + 1; LAST_SKIP_BITS(re, &s->gb, 6);
- UPDATE_CACHE(re, &s->gb);
- level = SHOW_SBITS(re, &s->gb, 8); SKIP_BITS(re, &s->gb, 8);
- if (level == -128) {
- level = SHOW_UBITS(re, &s->gb, 8) - 256; LAST_SKIP_BITS(re, &s->gb, 8);
- } else if (level == 0) {
- level = SHOW_UBITS(re, &s->gb, 8) ; LAST_SKIP_BITS(re, &s->gb, 8);
- }
- i += run;
- j = scantable[i];
- if (level < 0) {
- level = -level;
- level = (level * qscale * quant_matrix[j]) >> 4;
- level = (level - 1) | 1;
- level = -level;
- } else {
- level = (level * qscale * quant_matrix[j]) >> 4;
- level = (level - 1) | 1;
- }
- }
- if (i > 63) {
- av_log(s->avctx, AV_LOG_ERROR, "ac-tex damaged at %d %d\n", s->mb_x, s->mb_y);
- return -1;
- }
+ av_dlog(s->avctx, "decode_mb: x=%d y=%d\n", s->mb_x, s->mb_y);
- block[j] = level;
- }
- CLOSE_READER(re, &s->gb);
- }
- s->block_last_index[n] = i;
- return 0;
-}
+ assert(s->mb_skipped == 0);
-int ff_mpeg1_decode_block_intra(MpegEncContext *s, DCTELEM *block, int n)
-{
- return mpeg1_decode_block_intra(s, block, n);
-}
+ if (s->mb_skip_run-- != 0) {
+ if (s->pict_type == AV_PICTURE_TYPE_P) {
+ s->mb_skipped = 1;
+ s->current_picture.f.mb_type[s->mb_x + s->mb_y * s->mb_stride] = MB_TYPE_SKIP | MB_TYPE_L0 | MB_TYPE_16x16;
+ } else {
+ int mb_type;
-static inline int mpeg1_decode_block_inter(MpegEncContext *s, DCTELEM *block, int n)
-{
- int level, i, j, run;
- RLTable *rl = &ff_rl_mpeg1;
- uint8_t * const scantable = s->intra_scantable.permutated;
- const uint16_t *quant_matrix = s->inter_matrix;
- const int qscale = s->qscale;
+ if (s->mb_x)
+ mb_type = s->current_picture.f.mb_type[s->mb_x + s->mb_y * s->mb_stride - 1];
+ else
+ mb_type = s->current_picture.f.mb_type[s->mb_width + (s->mb_y - 1) * s->mb_stride - 1]; // FIXME not sure if this is allowed in MPEG at all
+ if (IS_INTRA(mb_type))
+ return -1;
+ s->current_picture.f.mb_type[s->mb_x + s->mb_y*s->mb_stride] =
+ mb_type | MB_TYPE_SKIP;
+// assert(s->current_picture.f.mb_type[s->mb_x + s->mb_y * s->mb_stride - 1] & (MB_TYPE_16x16 | MB_TYPE_16x8));
- {
- OPEN_READER(re, &s->gb);
- i = -1;
- // special case for first coefficient, no need to add second VLC table
- UPDATE_CACHE(re, &s->gb);
- if (((int32_t)GET_CACHE(re, &s->gb)) < 0) {
- level = (3 * qscale * quant_matrix[0]) >> 5;
- level = (level - 1) | 1;
- if (GET_CACHE(re, &s->gb) & 0x40000000)
- level = -level;
- block[0] = level;
- i++;
- SKIP_BITS(re, &s->gb, 2);
- if (((int32_t)GET_CACHE(re, &s->gb)) <= (int32_t)0xBFFFFFFF)
- goto end;
+ if ((s->mv[0][0][0] | s->mv[0][0][1] | s->mv[1][0][0] | s->mv[1][0][1]) == 0)
+ s->mb_skipped = 1;
}
- /* now quantify & encode AC coefficients */
- for (;;) {
- GET_RL_VLC(level, run, re, &s->gb, rl->rl_vlc[0], TEX_VLC_BITS, 2, 0);
- if (level != 0) {
- i += run;
- j = scantable[i];
- level = ((level * 2 + 1) * qscale * quant_matrix[j]) >> 5;
- level = (level - 1) | 1;
- level = (level ^ SHOW_SBITS(re, &s->gb, 1)) - SHOW_SBITS(re, &s->gb, 1);
- SKIP_BITS(re, &s->gb, 1);
- } else {
- /* escape */
- run = SHOW_UBITS(re, &s->gb, 6) + 1; LAST_SKIP_BITS(re, &s->gb, 6);
- UPDATE_CACHE(re, &s->gb);
- level = SHOW_SBITS(re, &s->gb, 8); SKIP_BITS(re, &s->gb, 8);
- if (level == -128) {
- level = SHOW_UBITS(re, &s->gb, 8) - 256; SKIP_BITS(re, &s->gb, 8);
- } else if (level == 0) {
- level = SHOW_UBITS(re, &s->gb, 8) ; SKIP_BITS(re, &s->gb, 8);
- }
- i += run;
- j = scantable[i];
- if (level < 0) {
- level = -level;
- level = ((level * 2 + 1) * qscale * quant_matrix[j]) >> 5;
- level = (level - 1) | 1;
- level = -level;
- } else {
- level = ((level * 2 + 1) * qscale * quant_matrix[j]) >> 5;
- level = (level - 1) | 1;
- }
- }
- if (i > 63) {
- av_log(s->avctx, AV_LOG_ERROR, "ac-tex damaged at %d %d\n", s->mb_x, s->mb_y);
+ return 0;
+ }
+
+ switch (s->pict_type) {
+ default:
+ case AV_PICTURE_TYPE_I:
+ if (get_bits1(&s->gb) == 0) {
+ if (get_bits1(&s->gb) == 0) {
+ av_log(s->avctx, AV_LOG_ERROR, "invalid mb type in I Frame at %d %d\n", s->mb_x, s->mb_y);
return -1;
}
-
- block[j] = level;
- if (((int32_t)GET_CACHE(re, &s->gb)) <= (int32_t)0xBFFFFFFF)
- break;
- UPDATE_CACHE(re, &s->gb);
+ mb_type = MB_TYPE_QUANT | MB_TYPE_INTRA;
+ } else {
+ mb_type = MB_TYPE_INTRA;
}
-end:
- LAST_SKIP_BITS(re, &s->gb, 2);
- CLOSE_READER(re, &s->gb);
+ break;
+ case AV_PICTURE_TYPE_P:
+ mb_type = get_vlc2(&s->gb, mb_ptype_vlc.table, MB_PTYPE_VLC_BITS, 1);
+ if (mb_type < 0) {
+ av_log(s->avctx, AV_LOG_ERROR, "invalid mb type in P Frame at %d %d\n", s->mb_x, s->mb_y);
+ return -1;
+ }
+ mb_type = ptype2mb_type[mb_type];
+ break;
+ case AV_PICTURE_TYPE_B:
+ mb_type = get_vlc2(&s->gb, mb_btype_vlc.table, MB_BTYPE_VLC_BITS, 1);
+ if (mb_type < 0) {
+ av_log(s->avctx, AV_LOG_ERROR, "invalid mb type in B Frame at %d %d\n", s->mb_x, s->mb_y);
+ return -1;
+ }
+ mb_type = btype2mb_type[mb_type];
+ break;
}
- s->block_last_index[n] = i;
- return 0;
-}
+ av_dlog(s->avctx, "mb_type=%x\n", mb_type);
+// motion_type = 0; /* avoid warning */
+ if (IS_INTRA(mb_type)) {
+ s->dsp.clear_blocks(s->block[0]);
-static inline int mpeg1_fast_decode_block_inter(MpegEncContext *s, DCTELEM *block, int n)
-{
- int level, i, j, run;
- RLTable *rl = &ff_rl_mpeg1;
- uint8_t * const scantable = s->intra_scantable.permutated;
- const int qscale = s->qscale;
+ if (!s->chroma_y_shift) {
+ s->dsp.clear_blocks(s->block[6]);
+ }
- {
- OPEN_READER(re, &s->gb);
- i = -1;
- // special case for first coefficient, no need to add second VLC table
- UPDATE_CACHE(re, &s->gb);
- if (((int32_t)GET_CACHE(re, &s->gb)) < 0) {
- level = (3 * qscale) >> 1;
- level = (level - 1) | 1;
- if (GET_CACHE(re, &s->gb) & 0x40000000)
- level = -level;
- block[0] = level;
- i++;
- SKIP_BITS(re, &s->gb, 2);
- if (((int32_t)GET_CACHE(re, &s->gb)) <= (int32_t)0xBFFFFFFF)
- goto end;
+ /* compute DCT type */
+ if (s->picture_structure == PICT_FRAME && // FIXME add an interlaced_dct coded var?
+ !s->frame_pred_frame_dct) {
+ s->interlaced_dct = get_bits1(&s->gb);
}
- /* now quantify & encode AC coefficients */
- for (;;) {
- GET_RL_VLC(level, run, re, &s->gb, rl->rl_vlc[0], TEX_VLC_BITS, 2, 0);
-
- if (level != 0) {
- i += run;
- j = scantable[i];
- level = ((level * 2 + 1) * qscale) >> 1;
- level = (level - 1) | 1;
- level = (level ^ SHOW_SBITS(re, &s->gb, 1)) - SHOW_SBITS(re, &s->gb, 1);
- SKIP_BITS(re, &s->gb, 1);
- } else {
- /* escape */
- run = SHOW_UBITS(re, &s->gb, 6)+1; LAST_SKIP_BITS(re, &s->gb, 6);
- UPDATE_CACHE(re, &s->gb);
- level = SHOW_SBITS(re, &s->gb, 8); SKIP_BITS(re, &s->gb, 8);
- if (level == -128) {
- level = SHOW_UBITS(re, &s->gb, 8) - 256; SKIP_BITS(re, &s->gb, 8);
- } else if (level == 0) {
- level = SHOW_UBITS(re, &s->gb, 8) ; SKIP_BITS(re, &s->gb, 8);
- }
- i += run;
- j = scantable[i];
- if (level < 0) {
- level = -level;
- level = ((level * 2 + 1) * qscale) >> 1;
- level = (level - 1) | 1;
- level = -level;
- } else {
- level = ((level * 2 + 1) * qscale) >> 1;
- level = (level - 1) | 1;
- }
- }
-
- block[j] = level;
- if (((int32_t)GET_CACHE(re, &s->gb)) <= (int32_t)0xBFFFFFFF)
- break;
- UPDATE_CACHE(re, &s->gb);
- }
-end:
- LAST_SKIP_BITS(re, &s->gb, 2);
- CLOSE_READER(re, &s->gb);
- }
- s->block_last_index[n] = i;
- return 0;
-}
-
-
-static inline int mpeg2_decode_block_non_intra(MpegEncContext *s, DCTELEM *block, int n)
-{
- int level, i, j, run;
- RLTable *rl = &ff_rl_mpeg1;
- uint8_t * const scantable = s->intra_scantable.permutated;
- const uint16_t *quant_matrix;
- const int qscale = s->qscale;
- int mismatch;
+ if (IS_QUANT(mb_type))
+ s->qscale = get_qscale(s);
- mismatch = 1;
+ if (s->concealment_motion_vectors) {
+ /* just parse them */
+ if (s->picture_structure != PICT_FRAME)
+ skip_bits1(&s->gb); /* field select */
- {
- OPEN_READER(re, &s->gb);
- i = -1;
- if (n < 4)
- quant_matrix = s->inter_matrix;
- else
- quant_matrix = s->chroma_inter_matrix;
+ s->mv[0][0][0]= s->last_mv[0][0][0]= s->last_mv[0][1][0] =
+ mpeg_decode_motion(s, s->mpeg_f_code[0][0], s->last_mv[0][0][0]);
+ s->mv[0][0][1]= s->last_mv[0][0][1]= s->last_mv[0][1][1] =
+ mpeg_decode_motion(s, s->mpeg_f_code[0][1], s->last_mv[0][0][1]);
- // special case for first coefficient, no need to add second VLC table
- UPDATE_CACHE(re, &s->gb);
- if (((int32_t)GET_CACHE(re, &s->gb)) < 0) {
- level= (3 * qscale * quant_matrix[0]) >> 5;
- if (GET_CACHE(re, &s->gb) & 0x40000000)
- level = -level;
- block[0] = level;
- mismatch ^= level;
- i++;
- SKIP_BITS(re, &s->gb, 2);
- if (((int32_t)GET_CACHE(re, &s->gb)) <= (int32_t)0xBFFFFFFF)
- goto end;
+ skip_bits1(&s->gb); /* marker */
+ } else
+ memset(s->last_mv, 0, sizeof(s->last_mv)); /* reset mv prediction */
+ s->mb_intra = 1;
+ // if 1, we memcpy blocks in xvmcvideo
+ if (CONFIG_MPEG_XVMC_DECODER && s->avctx->xvmc_acceleration > 1) {
+ ff_xvmc_pack_pblocks(s, -1); // inter are always full blocks
+ if (s->swap_uv) {
+ exchange_uv(s);
+ }
}
- /* now quantify & encode AC coefficients */
- for (;;) {
- GET_RL_VLC(level, run, re, &s->gb, rl->rl_vlc[0], TEX_VLC_BITS, 2, 0);
-
- if (level != 0) {
- i += run;
- j = scantable[i];
- level = ((level * 2 + 1) * qscale * quant_matrix[j]) >> 5;
- level = (level ^ SHOW_SBITS(re, &s->gb, 1)) - SHOW_SBITS(re, &s->gb, 1);
- SKIP_BITS(re, &s->gb, 1);
+ if (s->codec_id == CODEC_ID_MPEG2VIDEO) {
+ if (s->flags2 & CODEC_FLAG2_FAST) {
+ for (i = 0; i < 6; i++) {
+ mpeg2_fast_decode_block_intra(s, *s->pblocks[i], i);
+ }
} else {
- /* escape */
- run = SHOW_UBITS(re, &s->gb, 6) + 1; LAST_SKIP_BITS(re, &s->gb, 6);
- UPDATE_CACHE(re, &s->gb);
- level = SHOW_SBITS(re, &s->gb, 12); SKIP_BITS(re, &s->gb, 12);
-
- i += run;
- j = scantable[i];
- if (level < 0) {
- level = ((-level * 2 + 1) * qscale * quant_matrix[j]) >> 5;
- level = -level;
- } else {
- level = ((level * 2 + 1) * qscale * quant_matrix[j]) >> 5;
+ for (i = 0; i < mb_block_count; i++) {
+ if (mpeg2_decode_block_intra(s, *s->pblocks[i], i) < 0)
+ return -1;
}
}
- if (i > 63) {
- av_log(s->avctx, AV_LOG_ERROR, "ac-tex damaged at %d %d\n", s->mb_x, s->mb_y);
- return -1;
+ } else {
+ for (i = 0; i < 6; i++) {
+ if (mpeg1_decode_block_intra(s, *s->pblocks[i], i) < 0)
+ return -1;
}
-
- mismatch ^= level;
- block[j] = level;
- if (((int32_t)GET_CACHE(re, &s->gb)) <= (int32_t)0xBFFFFFFF)
- break;
- UPDATE_CACHE(re, &s->gb);
}
-end:
- LAST_SKIP_BITS(re, &s->gb, 2);
- CLOSE_READER(re, &s->gb);
- }
- block[63] ^= (mismatch & 1);
+ } else {
+ if (mb_type & MB_TYPE_ZERO_MV) {
+ assert(mb_type & MB_TYPE_CBP);
- s->block_last_index[n] = i;
- return 0;
-}
+ s->mv_dir = MV_DIR_FORWARD;
+ if (s->picture_structure == PICT_FRAME) {
+ if (!s->frame_pred_frame_dct)
+ s->interlaced_dct = get_bits1(&s->gb);
+ s->mv_type = MV_TYPE_16X16;
+ } else {
+ s->mv_type = MV_TYPE_FIELD;
+ mb_type |= MB_TYPE_INTERLACED;
+ s->field_select[0][0] = s->picture_structure - 1;
+ }
-static inline int mpeg2_fast_decode_block_non_intra(MpegEncContext *s,
- DCTELEM *block, int n)
-{
- int level, i, j, run;
- RLTable *rl = &ff_rl_mpeg1;
- uint8_t * const scantable = s->intra_scantable.permutated;
- const int qscale = s->qscale;
- OPEN_READER(re, &s->gb);
- i = -1;
+ if (IS_QUANT(mb_type))
+ s->qscale = get_qscale(s);
- // special case for first coefficient, no need to add second VLC table
- UPDATE_CACHE(re, &s->gb);
- if (((int32_t)GET_CACHE(re, &s->gb)) < 0) {
- level = (3 * qscale) >> 1;
- if (GET_CACHE(re, &s->gb) & 0x40000000)
- level = -level;
- block[0] = level;
- i++;
- SKIP_BITS(re, &s->gb, 2);
- if (((int32_t)GET_CACHE(re, &s->gb)) <= (int32_t)0xBFFFFFFF)
- goto end;
- }
+ s->last_mv[0][0][0] = 0;
+ s->last_mv[0][0][1] = 0;
+ s->last_mv[0][1][0] = 0;
+ s->last_mv[0][1][1] = 0;
+ s->mv[0][0][0] = 0;
+ s->mv[0][0][1] = 0;
+ } else {
+ assert(mb_type & MB_TYPE_L0L1);
+ // FIXME decide if MBs in field pictures are MB_TYPE_INTERLACED
+ /* get additional motion vector type */
+ if (s->frame_pred_frame_dct)
+ motion_type = MT_FRAME;
+ else {
+ motion_type = get_bits(&s->gb, 2);
+ if (s->picture_structure == PICT_FRAME && HAS_CBP(mb_type))
+ s->interlaced_dct = get_bits1(&s->gb);
+ }
- /* now quantify & encode AC coefficients */
- for (;;) {
- GET_RL_VLC(level, run, re, &s->gb, rl->rl_vlc[0], TEX_VLC_BITS, 2, 0);
+ if (IS_QUANT(mb_type))
+ s->qscale = get_qscale(s);
- if (level != 0) {
- i += run;
- j = scantable[i];
- level = ((level * 2 + 1) * qscale) >> 1;
- level = (level ^ SHOW_SBITS(re, &s->gb, 1)) - SHOW_SBITS(re, &s->gb, 1);
- SKIP_BITS(re, &s->gb, 1);
- } else {
- /* escape */
- run = SHOW_UBITS(re, &s->gb, 6) + 1; LAST_SKIP_BITS(re, &s->gb, 6);
- UPDATE_CACHE(re, &s->gb);
- level = SHOW_SBITS(re, &s->gb, 12); SKIP_BITS(re, &s->gb, 12);
+ /* motion vectors */
+ s->mv_dir = (mb_type >> 13) & 3;
+ av_dlog(s->avctx, "motion_type=%d\n", motion_type);
+ switch (motion_type) {
+ case MT_FRAME: /* or MT_16X8 */
+ if (s->picture_structure == PICT_FRAME) {
+ mb_type |= MB_TYPE_16x16;
+ s->mv_type = MV_TYPE_16X16;
+ for (i = 0; i < 2; i++) {
+ if (USES_LIST(mb_type, i)) {
+ /* MT_FRAME */
+ s->mv[i][0][0]= s->last_mv[i][0][0]= s->last_mv[i][1][0] =
+ mpeg_decode_motion(s, s->mpeg_f_code[i][0], s->last_mv[i][0][0]);
+ 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 (s->full_pel[i]) {
+ s->mv[i][0][0] <<= 1;
+ s->mv[i][0][1] <<= 1;
+ }
+ }
+ }
+ } else {
+ mb_type |= MB_TYPE_16x8 | MB_TYPE_INTERLACED;
+ s->mv_type = MV_TYPE_16X8;
+ for (i = 0; i < 2; i++) {
+ if (USES_LIST(mb_type, i)) {
+ /* MT_16X8 */
+ for (j = 0; j < 2; j++) {
+ s->field_select[i][j] = get_bits1(&s->gb);
+ for (k = 0; k < 2; k++) {
+ val = mpeg_decode_motion(s, s->mpeg_f_code[i][k],
+ s->last_mv[i][j][k]);
+ s->last_mv[i][j][k] = val;
+ s->mv[i][j][k] = val;
+ }
+ }
+ }
+ }
+ }
+ break;
+ case MT_FIELD:
+ s->mv_type = MV_TYPE_FIELD;
+ if (s->picture_structure == PICT_FRAME) {
+ mb_type |= MB_TYPE_16x8 | MB_TYPE_INTERLACED;
+ for (i = 0; i < 2; i++) {
+ if (USES_LIST(mb_type, i)) {
+ for (j = 0; j < 2; j++) {
+ s->field_select[i][j] = get_bits1(&s->gb);
+ val = mpeg_decode_motion(s, s->mpeg_f_code[i][0],
+ s->last_mv[i][j][0]);
+ s->last_mv[i][j][0] = val;
+ s->mv[i][j][0] = val;
+ av_dlog(s->avctx, "fmx=%d\n", val);
+ val = mpeg_decode_motion(s, s->mpeg_f_code[i][1],
+ s->last_mv[i][j][1] >> 1);
+ s->last_mv[i][j][1] = val << 1;
+ s->mv[i][j][1] = val;
+ av_dlog(s->avctx, "fmy=%d\n", val);
+ }
+ }
+ }
+ } else {
+ av_assert0(!s->progressive_sequence);
+ mb_type |= MB_TYPE_16x16 | MB_TYPE_INTERLACED;
+ for (i = 0; i < 2; i++) {
+ if (USES_LIST(mb_type, i)) {
+ s->field_select[i][0] = get_bits1(&s->gb);
+ for (k = 0; k < 2; k++) {
+ val = mpeg_decode_motion(s, s->mpeg_f_code[i][k],
+ s->last_mv[i][0][k]);
+ s->last_mv[i][0][k] = val;
+ s->last_mv[i][1][k] = val;
+ s->mv[i][0][k] = val;
+ }
+ }
+ }
+ }
+ break;
+ case MT_DMV:
+ if(s->progressive_sequence){
+ av_log(s->avctx, AV_LOG_ERROR, "MT_DMV in progressive_sequence\n");
+ return -1;
+ }
+ s->mv_type = MV_TYPE_DMV;
+ for (i = 0; i < 2; i++) {
+ if (USES_LIST(mb_type, i)) {
+ int dmx, dmy, mx, my, m;
+ const int my_shift = s->picture_structure == PICT_FRAME;
- i += run;
- j = scantable[i];
- if (level < 0) {
- level = ((-level * 2 + 1) * qscale) >> 1;
- level = -level;
- } else {
- level = ((level * 2 + 1) * qscale) >> 1;
- }
- }
+ mx = mpeg_decode_motion(s, s->mpeg_f_code[i][0],
+ s->last_mv[i][0][0]);
+ s->last_mv[i][0][0] = mx;
+ s->last_mv[i][1][0] = mx;
+ dmx = get_dmv(s);
+ my = mpeg_decode_motion(s, s->mpeg_f_code[i][1],
+ s->last_mv[i][0][1] >> my_shift);
+ dmy = get_dmv(s);
- block[j] = level;
- if (((int32_t)GET_CACHE(re, &s->gb)) <= (int32_t)0xBFFFFFFF)
- break;
- UPDATE_CACHE(re, &s->gb);
- }
-end:
- LAST_SKIP_BITS(re, &s->gb, 2);
- CLOSE_READER(re, &s->gb);
- s->block_last_index[n] = i;
- return 0;
-}
+ s->last_mv[i][0][1] = my << my_shift;
+ s->last_mv[i][1][1] = my << my_shift;
-static inline int mpeg2_decode_block_intra(MpegEncContext *s, DCTELEM *block, int n)
-{
- int level, dc, diff, i, j, run;
- int component;
- RLTable *rl;
- uint8_t * const scantable = s->intra_scantable.permutated;
- const uint16_t *quant_matrix;
- const int qscale = s->qscale;
- int mismatch;
+ s->mv[i][0][0] = mx;
+ s->mv[i][0][1] = my;
+ s->mv[i][1][0] = mx; // not used
+ s->mv[i][1][1] = my; // not used
- /* DC coefficient */
- if (n < 4) {
- quant_matrix = s->intra_matrix;
- component = 0;
- } else {
- quant_matrix = s->chroma_intra_matrix;
- component = (n & 1) + 1;
- }
- diff = decode_dc(&s->gb, component);
- if (diff >= 0xffff)
- return -1;
- dc = s->last_dc[component];
- dc += diff;
- s->last_dc[component] = dc;
- block[0] = dc << (3 - s->intra_dc_precision);
- av_dlog(s->avctx, "dc=%d\n", block[0]);
- mismatch = block[0] ^ 1;
- i = 0;
- if (s->intra_vlc_format)
- rl = &ff_rl_mpeg2;
- else
- rl = &ff_rl_mpeg1;
+ if (s->picture_structure == PICT_FRAME) {
+ mb_type |= MB_TYPE_16x16 | MB_TYPE_INTERLACED;
- {
- OPEN_READER(re, &s->gb);
- /* now quantify & encode AC coefficients */
- for (;;) {
- UPDATE_CACHE(re, &s->gb);
- GET_RL_VLC(level, run, re, &s->gb, rl->rl_vlc[0], TEX_VLC_BITS, 2, 0);
+ // m = 1 + 2 * s->top_field_first;
+ m = s->top_field_first ? 1 : 3;
- if (level == 127) {
- break;
- } else if (level != 0) {
- i += run;
- j = scantable[i];
- level = (level * qscale * quant_matrix[j]) >> 4;
- level = (level ^ SHOW_SBITS(re, &s->gb, 1)) - SHOW_SBITS(re, &s->gb, 1);
- LAST_SKIP_BITS(re, &s->gb, 1);
- } else {
- /* escape */
- run = SHOW_UBITS(re, &s->gb, 6) + 1; LAST_SKIP_BITS(re, &s->gb, 6);
- UPDATE_CACHE(re, &s->gb);
- level = SHOW_SBITS(re, &s->gb, 12); SKIP_BITS(re, &s->gb, 12);
- i += run;
- j = scantable[i];
- if (level < 0) {
- level = (-level * qscale * quant_matrix[j]) >> 4;
- level = -level;
- } else {
- level = (level * qscale * quant_matrix[j]) >> 4;
+ /* top -> top pred */
+ s->mv[i][2][0] = ((mx * m + (mx > 0)) >> 1) + dmx;
+ s->mv[i][2][1] = ((my * m + (my > 0)) >> 1) + dmy - 1;
+ m = 4 - m;
+ s->mv[i][3][0] = ((mx * m + (mx > 0)) >> 1) + dmx;
+ s->mv[i][3][1] = ((my * m + (my > 0)) >> 1) + dmy + 1;
+ } else {
+ mb_type |= MB_TYPE_16x16;
+
+ s->mv[i][2][0] = ((mx + (mx > 0)) >> 1) + dmx;
+ s->mv[i][2][1] = ((my + (my > 0)) >> 1) + dmy;
+ if (s->picture_structure == PICT_TOP_FIELD)
+ s->mv[i][2][1]--;
+ else
+ s->mv[i][2][1]++;
+ }
+ }
}
- }
- if (i > 63) {
- av_log(s->avctx, AV_LOG_ERROR, "ac-tex damaged at %d %d\n", s->mb_x, s->mb_y);
+ break;
+ default:
+ av_log(s->avctx, AV_LOG_ERROR, "00 motion_type at %d %d\n", s->mb_x, s->mb_y);
return -1;
}
-
- mismatch ^= level;
- block[j] = level;
}
- CLOSE_READER(re, &s->gb);
- }
- block[63] ^= mismatch & 1;
- s->block_last_index[n] = i;
- return 0;
-}
+ s->mb_intra = 0;
+ if (HAS_CBP(mb_type)) {
+ s->dsp.clear_blocks(s->block[0]);
-static inline int mpeg2_fast_decode_block_intra(MpegEncContext *s, DCTELEM *block, int n)
-{
- int level, dc, diff, j, run;
- int component;
- RLTable *rl;
- uint8_t * scantable = s->intra_scantable.permutated;
- const uint16_t *quant_matrix;
- const int qscale = s->qscale;
+ cbp = get_vlc2(&s->gb, mb_pat_vlc.table, MB_PAT_VLC_BITS, 1);
+ if (mb_block_count > 6) {
+ cbp <<= mb_block_count - 6;
+ cbp |= get_bits(&s->gb, mb_block_count - 6);
+ s->dsp.clear_blocks(s->block[6]);
+ }
+ if (cbp <= 0) {
+ av_log(s->avctx, AV_LOG_ERROR, "invalid cbp at %d %d\n", s->mb_x, s->mb_y);
+ return -1;
+ }
- /* DC coefficient */
- if (n < 4) {
- quant_matrix = s->intra_matrix;
- component = 0;
- } else {
- quant_matrix = s->chroma_intra_matrix;
- component = (n & 1) + 1;
- }
- diff = decode_dc(&s->gb, component);
- if (diff >= 0xffff)
- return -1;
- dc = s->last_dc[component];
- dc += diff;
- s->last_dc[component] = dc;
- block[0] = dc << (3 - s->intra_dc_precision);
- if (s->intra_vlc_format)
- rl = &ff_rl_mpeg2;
- else
- rl = &ff_rl_mpeg1;
+ //if 1, we memcpy blocks in xvmcvideo
+ if (CONFIG_MPEG_XVMC_DECODER && s->avctx->xvmc_acceleration > 1) {
+ ff_xvmc_pack_pblocks(s, cbp);
+ if (s->swap_uv) {
+ exchange_uv(s);
+ }
+ }
- {
- OPEN_READER(re, &s->gb);
- /* now quantify & encode AC coefficients */
- for (;;) {
- UPDATE_CACHE(re, &s->gb);
- GET_RL_VLC(level, run, re, &s->gb, rl->rl_vlc[0], TEX_VLC_BITS, 2, 0);
+ if (s->codec_id == CODEC_ID_MPEG2VIDEO) {
+ if (s->flags2 & CODEC_FLAG2_FAST) {
+ for (i = 0; i < 6; i++) {
+ if (cbp & 32) {
+ mpeg2_fast_decode_block_non_intra(s, *s->pblocks[i], i);
+ } else {
+ s->block_last_index[i] = -1;
+ }
+ cbp += cbp;
+ }
+ } else {
+ cbp <<= 12-mb_block_count;
- if (level == 127) {
- break;
- } else if (level != 0) {
- scantable += run;
- j = *scantable;
- level = (level * qscale * quant_matrix[j]) >> 4;
- level = (level ^ SHOW_SBITS(re, &s->gb, 1)) - SHOW_SBITS(re, &s->gb, 1);
- LAST_SKIP_BITS(re, &s->gb, 1);
+ for (i = 0; i < mb_block_count; i++) {
+ if (cbp & (1 << 11)) {
+ if (mpeg2_decode_block_non_intra(s, *s->pblocks[i], i) < 0)
+ return -1;
+ } else {
+ s->block_last_index[i] = -1;
+ }
+ cbp += cbp;
+ }
+ }
} else {
- /* escape */
- run = SHOW_UBITS(re, &s->gb, 6) + 1; LAST_SKIP_BITS(re, &s->gb, 6);
- UPDATE_CACHE(re, &s->gb);
- level = SHOW_SBITS(re, &s->gb, 12); SKIP_BITS(re, &s->gb, 12);
- scantable += run;
- j = *scantable;
- if (level < 0) {
- level = (-level * qscale * quant_matrix[j]) >> 4;
- level = -level;
+ if (s->flags2 & CODEC_FLAG2_FAST) {
+ for (i = 0; i < 6; i++) {
+ if (cbp & 32) {
+ mpeg1_fast_decode_block_inter(s, *s->pblocks[i], i);
+ } else {
+ s->block_last_index[i] = -1;
+ }
+ cbp += cbp;
+ }
} else {
- level = (level * qscale * quant_matrix[j]) >> 4;
+ for (i = 0; i < 6; i++) {
+ if (cbp & 32) {
+ if (mpeg1_decode_block_inter(s, *s->pblocks[i], i) < 0)
+ return -1;
+ } else {
+ s->block_last_index[i] = -1;
+ }
+ cbp += cbp;
+ }
}
}
-
- block[j] = level;
+ } else {
+ for (i = 0; i < 12; i++)
+ s->block_last_index[i] = -1;
}
- CLOSE_READER(re, &s->gb);
}
- s->block_last_index[n] = scantable - s->intra_scantable.permutated;
+ s->current_picture.f.mb_type[s->mb_x + s->mb_y * s->mb_stride] = mb_type;
+
return 0;
}
-typedef struct Mpeg1Context {
- MpegEncContext mpeg_enc_ctx;
- int mpeg_enc_ctx_allocated; /* true if decoding context allocated */
- int repeat_field; /* true if we must repeat the field */
- AVPanScan pan_scan; /**< some temporary storage for the panscan */
- int slice_count;
- int swap_uv;//indicate VCR2
- int save_aspect_info;
- 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?
-} Mpeg1Context;
-
static av_cold int mpeg_decode_init(AVCodecContext *avctx)
{
Mpeg1Context *s = avctx->priv_data;
if (!ctx->mpeg_enc_ctx_allocated)
memcpy(s + 1, s1 + 1, sizeof(Mpeg1Context) - sizeof(MpegEncContext));
- if (!(s->pict_type == FF_B_TYPE || s->low_delay))
+ if (!(s->pict_type == AV_PICTURE_TYPE_B || s->low_delay))
s->picture_number++;
return 0;
assert((avctx->sub_id == 1) == (avctx->codec_id == CODEC_ID_MPEG1VIDEO));
if (avctx->codec_id == CODEC_ID_MPEG1VIDEO) {
//MPEG-1 fps
- avctx->time_base.den = ff_frame_rate_tab[s->frame_rate_index].num;
- avctx->time_base.num = ff_frame_rate_tab[s->frame_rate_index].den;
+ avctx->time_base.den = avpriv_frame_rate_tab[s->frame_rate_index].num;
+ avctx->time_base.num = avpriv_frame_rate_tab[s->frame_rate_index].den;
//MPEG-1 aspect
avctx->sample_aspect_ratio = av_d2q(1.0/ff_mpeg1_aspect[s->aspect_ratio_info], 255);
avctx->ticks_per_frame=1;
//MPEG-2 fps
av_reduce(&s->avctx->time_base.den,
&s->avctx->time_base.num,
- ff_frame_rate_tab[s->frame_rate_index].num * s1->frame_rate_ext.num*2,
- ff_frame_rate_tab[s->frame_rate_index].den * s1->frame_rate_ext.den,
+ avpriv_frame_rate_tab[s->frame_rate_index].num * s1->frame_rate_ext.num*2,
+ avpriv_frame_rate_tab[s->frame_rate_index].den * s1->frame_rate_ext.den,
1 << 30);
avctx->ticks_per_frame = 2;
//MPEG-2 aspect
if (s->pict_type == AV_PICTURE_TYPE_P || s->pict_type == AV_PICTURE_TYPE_B) {
s->full_pel[0] = get_bits1(&s->gb);
f_code = get_bits(&s->gb, 3);
- if (f_code == 0 && avctx->error_recognition >= FF_ER_COMPLIANT)
+ if (f_code == 0 && (avctx->err_recognition & AV_EF_BITSTREAM))
return -1;
s->mpeg_f_code[0][0] = f_code;
s->mpeg_f_code[0][1] = f_code;
if (s->pict_type == AV_PICTURE_TYPE_B) {
s->full_pel[1] = get_bits1(&s->gb);
f_code = get_bits(&s->gb, 3);
- if (f_code == 0 && avctx->error_recognition >= FF_ER_COMPLIANT)
+ if (f_code == 0 && (avctx->err_recognition & AV_EF_BITSTREAM))
return -1;
s->mpeg_f_code[1][0] = f_code;
s->mpeg_f_code[1][1] = f_code;
av_dlog(s->avctx, "progressive_frame=%d\n", s->progressive_frame);
}
-static void exchange_uv(MpegEncContext *s)
-{
- DCTELEM (*tmp)[64];
-
- tmp = s->pblocks[4];
- s->pblocks[4] = s->pblocks[5];
- s->pblocks[5] = tmp;
-}
-
static int mpeg_field_start(MpegEncContext *s, const uint8_t *buf, int buf_size)
{
AVCodecContext *avctx = s->avctx;
*s->current_picture_ptr->f.pan_scan = s1->pan_scan;
- if (HAVE_PTHREADS && (avctx->active_thread_type & FF_THREAD_FRAME))
+ if (HAVE_THREADS && (avctx->active_thread_type & FF_THREAD_FRAME))
ff_thread_finish_setup(avctx);
} else { // second field
int i;
* @return DECODE_SLICE_ERROR if the slice is damaged<br>
* DECODE_SLICE_OK if this slice is ok<br>
*/
-static int mpeg_decode_slice(Mpeg1Context *s1, int mb_y,
+static int mpeg_decode_slice(MpegEncContext *s, int mb_y,
const uint8_t **buf, int buf_size)
{
- MpegEncContext *s = &s1->mpeg_enc_ctx;
AVCodecContext *avctx = s->avctx;
const int lowres = s->avctx->lowres;
const int field_pic = s->picture_structure != PICT_FRAME;
if (avctx->hwaccel) {
const uint8_t *buf_end, *buf_start = *buf - 4; /* include start_code */
int start_code = -1;
- buf_end = ff_find_start_code(buf_start + 2, *buf + buf_size, &start_code);
+ buf_end = avpriv_mpv_find_start_code(buf_start + 2, *buf + buf_size, &start_code);
if (buf_end < *buf + buf_size)
buf_end -= 4;
s->mb_y = mb_y;
&& s->progressive_frame == 0 /* vbv_delay == 0xBBB || 0xE10*/;
if (left < 0 || (left && show_bits(&s->gb, FFMIN(left, 23)) && !is_d10)
- || (avctx->error_recognition >= FF_ER_AGGRESSIVE && left > 8)) {
+ || ((avctx->err_recognition & AV_EF_BUFFER) && left > 8)) {
av_log(avctx, AV_LOG_ERROR, "end mismatch left=%d %0X\n", left, show_bits(&s->gb, FFMIN(left, 23)));
return -1;
} else
uint32_t start_code;
int ret;
- ret = mpeg_decode_slice((Mpeg1Context*)s, mb_y, &buf, s->gb.buffer_end - buf);
+ ret = mpeg_decode_slice(s, mb_y, &buf, s->gb.buffer_end - buf);
emms_c();
//av_log(c, AV_LOG_DEBUG, "ret:%d resync:%d/%d mb:%d/%d ts:%d/%d ec:%d\n",
//ret, s->resync_mb_x, s->resync_mb_y, s->mb_x, s->mb_y, s->start_mb_y, s->end_mb_y, s->error_count);
if (ret < 0) {
- if (c->error_recognition >= FF_ER_EXPLODE)
+ if (c->err_recognition & AV_EF_EXPLODE)
return ret;
if (s->resync_mb_x >= 0 && s->resync_mb_y >= 0)
ff_er_add_slice(s, s->resync_mb_x, s->resync_mb_y, s->mb_x, s->mb_y, AC_ERROR | DC_ERROR | MV_ERROR);
return 0;
start_code = -1;
- buf = ff_find_start_code(buf, s->gb.buffer_end, &start_code);
+ buf = avpriv_mpv_find_start_code(buf, s->gb.buffer_end, &start_code);
mb_y= (start_code - SLICE_MIN_START_CODE) << field_pic;
if (s->picture_structure == PICT_BOTTOM_FIELD)
mb_y++;
ff_xvmc_field_end(s);
/* end of slice reached */
- if (/*s->mb_y << field_pic == s->mb_height &&*/ !s->first_field) {
+ if (/*s->mb_y << field_pic == s->mb_height &&*/ !s->first_field && !s->first_slice) {
/* end of image */
s->current_picture_ptr->f.qscale_type = FF_QSCALE_TYPE_MPEG2;
s->aspect_ratio_info = get_bits(&s->gb, 4);
if (s->aspect_ratio_info == 0) {
av_log(avctx, AV_LOG_ERROR, "aspect ratio has forbidden 0 value\n");
- if (avctx->error_recognition >= FF_ER_COMPLIANT)
+ if (avctx->err_recognition & AV_EF_BITSTREAM)
return -1;
}
s->frame_rate_index = get_bits(&s->gb, 4);
static void mpeg_decode_user_data(AVCodecContext *avctx,
const uint8_t *p, int buf_size)
{
+ Mpeg1Context *s = avctx->priv_data;
const uint8_t *buf_end = p + buf_size;
+ if(buf_size > 29){
+ int i;
+ for(i=0; i<20; i++)
+ if(!memcmp(p+i, "\0TMPGEXS\0", 9)){
+ s->tmpgexs= 1;
+ }
+
+/* for(i=0; !(!p[i-2] && !p[i-1] && p[i]==1) && i<buf_size; i++){
+ av_log(0,0, "%c", p[i]);
+ }
+ av_log(0,0, "\n");*/
+ }
+
/* we parse the DTG active format information */
if (buf_end - p >= 5 &&
p[0] == 'D' && p[1] == 'T' && p[2] == 'G' && p[3] == '1') {
Mpeg1Context *s1 = avctx->priv_data;
MpegEncContext *s = &s1->mpeg_enc_ctx;
+ int drop_frame_flag;
int time_code_hours, time_code_minutes;
int time_code_seconds, time_code_pictures;
int broken_link;
init_get_bits(&s->gb, buf, buf_size*8);
- skip_bits1(&s->gb); /* drop_frame_flag */
-
+ drop_frame_flag = get_bits(&s->gb, 1);
time_code_hours = get_bits(&s->gb, 5);
time_code_minutes = get_bits(&s->gb, 6);
skip_bits1(&s->gb); // marker bit
broken_link = get_bits1(&s->gb);
if (s->avctx->debug & FF_DEBUG_PICT_INFO)
- av_log(s->avctx, AV_LOG_DEBUG, "GOP (%2d:%02d:%02d.[%02d]) closed_gop=%d broken_link=%d\n",
+ av_log(s->avctx, AV_LOG_DEBUG, "GOP (%02d:%02d:%02d%c%02d) closed_gop=%d broken_link=%d\n",
time_code_hours, time_code_minutes, time_code_seconds,
+ drop_frame_flag ? ';' : ':',
time_code_pictures, s->closed_gop, broken_link);
}
/**
}
state++;
} else {
- i = ff_find_start_code(buf + i, buf + buf_size, &state) - buf - 1;
+ i = avpriv_mpv_find_start_code(buf + i, buf + buf_size, &state) - buf - 1;
if (pc->frame_start_found == 0 && state >= SLICE_MIN_START_CODE && state <= SLICE_MAX_START_CODE) {
i++;
pc->frame_start_found = 4;
if (avctx->extradata && !avctx->frame_number) {
int ret = decode_chunks(avctx, picture, data_size, avctx->extradata, avctx->extradata_size);
- if (ret < 0 && avctx->error_recognition >= FF_ER_EXPLODE)
+ if (ret < 0 && (avctx->err_recognition & AV_EF_EXPLODE))
return ret;
}
for (;;) {
/* find next start code */
uint32_t start_code = -1;
- buf_ptr = ff_find_start_code(buf_ptr, buf_end, &start_code);
+ buf_ptr = avpriv_mpv_find_start_code(buf_ptr, buf_end, &start_code);
if (start_code > 0x1ff) {
if (s2->pict_type != AV_PICTURE_TYPE_B || avctx->skip_frame <= AVDISCARD_DEFAULT) {
if (HAVE_THREADS && (avctx->active_thread_type & FF_THREAD_SLICE)) {
if (CONFIG_VDPAU && uses_vdpau(avctx))
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
*data_size = sizeof(AVPicture);
case SEQ_START_CODE:
if (last_code == 0) {
mpeg1_decode_sequence(avctx, buf_ptr, input_size);
- s->sync=1;
+ if(buf != avctx->extradata)
+ s->sync=1;
} else {
av_log(avctx, AV_LOG_ERROR, "ignoring SEQ_START_CODE after %X\n", last_code);
- if (avctx->error_recognition >= FF_ER_EXPLODE)
+ if (avctx->err_recognition & AV_EF_EXPLODE)
return AVERROR_INVALIDDATA;
}
break;
case PICTURE_START_CODE:
+ if(s->tmpgexs){
+ s2->intra_dc_precision= 3;
+ s2->intra_matrix[0]= 1;
+ }
if (HAVE_THREADS && (avctx->active_thread_type & FF_THREAD_SLICE) && s->slice_count) {
int i;
last_code = PICTURE_START_CODE;
} else {
av_log(avctx, AV_LOG_ERROR, "ignoring pic after %X\n", last_code);
- if (avctx->error_recognition >= FF_ER_EXPLODE)
+ if (avctx->err_recognition & AV_EF_EXPLODE)
return AVERROR_INVALIDDATA;
}
break;
mpeg_decode_sequence_extension(s);
} else {
av_log(avctx, AV_LOG_ERROR, "ignoring seq ext after %X\n", last_code);
- if (avctx->error_recognition >= FF_ER_EXPLODE)
+ if (avctx->err_recognition & AV_EF_EXPLODE)
return AVERROR_INVALIDDATA;
}
break;
mpeg_decode_picture_coding_extension(s);
} else {
av_log(avctx, AV_LOG_ERROR, "ignoring pic cod ext after %X\n", last_code);
- if (avctx->error_recognition >= FF_ER_EXPLODE)
+ if (avctx->err_recognition & AV_EF_EXPLODE)
return AVERROR_INVALIDDATA;
}
break;
s->sync=1;
} else {
av_log(avctx, AV_LOG_ERROR, "ignoring GOP_START_CODE after %X\n", last_code);
- if (avctx->error_recognition >= FF_ER_EXPLODE)
+ if (avctx->err_recognition & AV_EF_EXPLODE)
return AVERROR_INVALIDDATA;
}
break;
break;
}
}
- if (s2->pict_type == AV_PICTURE_TYPE_I)
+ if (s2->pict_type == AV_PICTURE_TYPE_I || (s2->flags2 & CODEC_FLAG2_SHOW_ALL))
s->sync=1;
if (s2->next_picture_ptr == NULL) {
/* Skip P-frames if we do not have a reference frame or we have an invalid header. */
if (!s2->pict_type) {
av_log(avctx, AV_LOG_ERROR, "Missing picture start code\n");
- if (avctx->error_recognition >= FF_ER_EXPLODE)
+ if (avctx->err_recognition & AV_EF_EXPLODE)
return AVERROR_INVALIDDATA;
break;
}
}
buf_ptr += 2; // FIXME add minimum number of bytes per slice
} else {
- ret = mpeg_decode_slice(s, mb_y, &buf_ptr, input_size);
+ ret = mpeg_decode_slice(s2, mb_y, &buf_ptr, input_size);
emms_c();
if (ret < 0) {
- if (avctx->error_recognition >= FF_ER_EXPLODE)
+ if (avctx->err_recognition & AV_EF_EXPLODE)
return ret;
if (s2->resync_mb_x >= 0 && s2->resync_mb_y >= 0)
ff_er_add_slice(s2, s2->resync_mb_x, s2->resync_mb_y, s2->mb_x, s2->mb_y, AC_ERROR | DC_ERROR | MV_ERROR);
projects / ffmpeg / blobdiff