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      1 /*
      2  * Copyright 2011 Maarten Lankhorst
      3  *
      4  * Permission is hereby granted, free of charge, to any person obtaining a
      5  * copy of this software and associated documentation files (the "Software"),
      6  * to deal in the Software without restriction, including without limitation
      7  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
      8  * and/or sell copies of the Software, and to permit persons to whom the
      9  * Software is furnished to do so, subject to the following conditions:
     10  *
     11  * The above copyright notice and this permission notice shall be included in
     12  * all copies or substantial portions of the Software.
     13  *
     14  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
     15  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
     16  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
     17  * THE AUTHORS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
     18  * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF
     19  * OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
     20  * SOFTWARE.
     21  */
     22 
     23 #include "vl/vl_decoder.h"
     24 #include "vl/vl_video_buffer.h"
     25 
     26 #include "nouveau_screen.h"
     27 #include "nouveau_context.h"
     28 #include "nouveau_video.h"
     29 
     30 #include "nouveau/nouveau_buffer.h"
     31 #include "util/u_video.h"
     32 #include "util/u_format.h"
     33 #include "util/u_sampler.h"
     34 
     35 static int
     36 nouveau_vpe_init(struct nouveau_decoder *dec) {
     37    int ret;
     38    if (dec->cmds)
     39       return 0;
     40    ret = nouveau_bo_map(dec->cmd_bo, NOUVEAU_BO_RDWR, dec->client);
     41    if (ret) {
     42       debug_printf("Mapping cmd bo: %s\n", strerror(-ret));
     43       return ret;
     44    }
     45    ret = nouveau_bo_map(dec->data_bo, NOUVEAU_BO_RDWR, dec->client);
     46    if (ret) {
     47       debug_printf("Mapping data bo: %s\n", strerror(-ret));
     48       return ret;
     49    }
     50    dec->cmds = dec->cmd_bo->map;
     51    dec->data = dec->data_bo->map;
     52    return ret;
     53 }
     54 
     55 static void
     56 nouveau_vpe_synch(struct nouveau_decoder *dec) {
     57    struct nouveau_pushbuf *push = dec->push;
     58 #if 0
     59    if (dec->fence_map) {
     60       BEGIN_NV04(push, NV84_MPEG(QUERY_COUNTER), 1);
     61       PUSH_DATA (push, ++dec->fence_seq);
     62       PUSH_KICK (push);
     63       while (dec->fence_map[0] != dec->fence_seq)
     64          usleep(1000);
     65    } else
     66 #endif
     67       PUSH_KICK(push);
     68 }
     69 
     70 static void
     71 nouveau_vpe_fini(struct nouveau_decoder *dec) {
     72    struct nouveau_pushbuf *push = dec->push;
     73    if (!dec->cmds)
     74       return;
     75 
     76    nouveau_pushbuf_space(push, 8, 2, 0);
     77    nouveau_bufctx_reset(dec->bufctx, NV31_VIDEO_BIND_CMD);
     78 
     79 #define BCTX_ARGS dec->bufctx, NV31_VIDEO_BIND_CMD, NOUVEAU_BO_RD
     80 
     81    BEGIN_NV04(push, NV31_MPEG(CMD_OFFSET), 2);
     82    PUSH_MTHDl(push, NV31_MPEG(CMD_OFFSET), dec->cmd_bo, 0, BCTX_ARGS);
     83    PUSH_DATA (push, dec->ofs * 4);
     84 
     85    BEGIN_NV04(push, NV31_MPEG(DATA_OFFSET), 2);
     86    PUSH_MTHDl(push, NV31_MPEG(DATA_OFFSET), dec->data_bo, 0, BCTX_ARGS);
     87    PUSH_DATA (push, dec->data_pos * 4);
     88 
     89 #undef BCTX_ARGS
     90 
     91    if (unlikely(nouveau_pushbuf_validate(dec->push)))
     92       return;
     93 
     94    BEGIN_NV04(push, NV31_MPEG(EXEC), 1);
     95    PUSH_DATA (push, 1);
     96 
     97    nouveau_vpe_synch(dec);
     98    dec->ofs = dec->data_pos = dec->num_surfaces = 0;
     99    dec->cmds = dec->data = NULL;
    100    dec->current = dec->future = dec->past = 8;
    101 }
    102 
    103 static INLINE void
    104 nouveau_vpe_mb_dct_blocks(struct nouveau_decoder *dec, const struct pipe_mpeg12_macroblock *mb)
    105 {
    106    int cbb;
    107    unsigned cbp = mb->coded_block_pattern;
    108    short *db = mb->blocks;
    109    for (cbb = 0x20; cbb > 0; cbb >>= 1) {
    110       if (cbb & cbp) {
    111          static const int lookup[64] = {
    112              0, 1, 8,16, 9, 2, 3,10,
    113             17,24,32,25,18,11, 4, 5,
    114             12,19,26,33,40,48,41,34,
    115             27,20,13, 6, 7,14,21,28,
    116             35,42,49,56,57,50,43,36,
    117             29,22,15,23,30,37,44,51,
    118             58,59,52,45,38,31,39,46,
    119             53,60,61,54,47,55,62,63
    120          };
    121          int i, j = 0, found = 0;
    122          for (i = 0; i < 64; ++i) {
    123             if (!db[lookup[i]]) { j += 2; continue; }
    124             dec->data[dec->data_pos++] = (db[lookup[i]] << 16) | j;
    125             j = 0;
    126             found = 1;
    127          }
    128          if (found)
    129             dec->data[dec->data_pos - 1] |= 1;
    130          else
    131             dec->data[dec->data_pos++] = 1;
    132          db += 64;
    133       } else if (mb->macroblock_type & PIPE_MPEG12_MB_TYPE_INTRA) {
    134          dec->data[dec->data_pos++] = 1;
    135       }
    136    }
    137 }
    138 
    139 static INLINE void
    140 nouveau_vpe_mb_data_blocks(struct nouveau_decoder *dec, const struct pipe_mpeg12_macroblock *mb)
    141 {
    142    int cbb;
    143    unsigned cbp = mb->coded_block_pattern;
    144    short *db = mb->blocks;
    145    for (cbb = 0x20; cbb > 0; cbb >>= 1) {
    146       if (cbb & cbp) {
    147          memcpy(&dec->data[dec->data_pos], db, 128);
    148          dec->data_pos += 32;
    149          db += 64;
    150       } else if (mb->macroblock_type & PIPE_MPEG12_MB_TYPE_INTRA) {
    151          memset(&dec->data[dec->data_pos], 0, 128);
    152          dec->data_pos += 32;
    153       }
    154    }
    155 }
    156 
    157 static INLINE void
    158 nouveau_vpe_mb_dct_header(struct nouveau_decoder *dec,
    159                           const struct pipe_mpeg12_macroblock *mb,
    160                           bool luma)
    161 {
    162    unsigned base_dct, cbp;
    163    bool intra = mb->macroblock_type & PIPE_MPEG12_MB_TYPE_INTRA;
    164    unsigned x = mb->x * 16;
    165    unsigned y = luma ? mb->y * 16 : mb->y * 8;
    166 
    167    /* Setup the base dct header */
    168    base_dct = dec->current << NV17_MPEG_CMD_CHROMA_MB_HEADER_SURFACE__SHIFT;
    169    base_dct |= NV17_MPEG_CMD_CHROMA_MB_HEADER_RUN_SINGLE;
    170 
    171    if (!(mb->x & 1))
    172       base_dct |= NV17_MPEG_CMD_CHROMA_MB_HEADER_X_COORD_EVEN;
    173    if (intra)
    174       cbp = 0x3f;
    175    else
    176       cbp = mb->coded_block_pattern;
    177 
    178    if (dec->picture_structure == PIPE_MPEG12_PICTURE_STRUCTURE_FRAME) {
    179       base_dct |= NV17_MPEG_CMD_CHROMA_MB_HEADER_TYPE_FRAME;
    180       if (luma && mb->macroblock_modes.bits.dct_type == PIPE_MPEG12_DCT_TYPE_FIELD)
    181          base_dct |= NV17_MPEG_CMD_CHROMA_MB_HEADER_FRAME_DCT_TYPE_FIELD;
    182    } else {
    183       if (dec->picture_structure == PIPE_MPEG12_PICTURE_STRUCTURE_FIELD_BOTTOM)
    184          base_dct |= NV17_MPEG_CMD_CHROMA_MB_HEADER_FIELD_BOTTOM;
    185       if (!intra)
    186          y *= 2;
    187    }
    188 
    189    if (luma) {
    190       base_dct |= NV17_MPEG_CMD_LUMA_MB_HEADER_OP_LUMA_MB_HEADER;
    191       base_dct |= (cbp >> 2) << NV17_MPEG_CMD_LUMA_MB_HEADER_CBP__SHIFT;
    192    } else {
    193       base_dct |= NV17_MPEG_CMD_CHROMA_MB_HEADER_OP_CHROMA_MB_HEADER;
    194       base_dct |= (cbp & 3) << NV17_MPEG_CMD_CHROMA_MB_HEADER_CBP__SHIFT;
    195    }
    196    nouveau_vpe_write(dec, base_dct);
    197    nouveau_vpe_write(dec, NV17_MPEG_CMD_MB_COORDS_OP_MB_COORDS |
    198                      x | (y << NV17_MPEG_CMD_MB_COORDS_Y__SHIFT));
    199 }
    200 
    201 static INLINE unsigned int
    202 nouveau_vpe_mb_mv_flags(bool luma, int mv_h, int mv_v, bool forward, bool first, bool vert)
    203 {
    204    unsigned mc_header = 0;
    205    if (luma)
    206       mc_header |= NV17_MPEG_CMD_LUMA_MV_HEADER_OP_LUMA_MV_HEADER;
    207    else
    208       mc_header |= NV17_MPEG_CMD_CHROMA_MV_HEADER_OP_CHROMA_MV_HEADER;
    209    if (mv_h & 1)
    210       mc_header |= NV17_MPEG_CMD_CHROMA_MV_HEADER_X_HALF;
    211    if (mv_v & 1)
    212       mc_header |= NV17_MPEG_CMD_CHROMA_MV_HEADER_Y_HALF;
    213    if (!forward)
    214       mc_header |= NV17_MPEG_CMD_CHROMA_MV_HEADER_DIRECTION_BACKWARD;
    215    if (!first)
    216       mc_header |= NV17_MPEG_CMD_CHROMA_MV_HEADER_IDX;
    217    if (vert)
    218       mc_header |= NV17_MPEG_CMD_LUMA_MV_HEADER_FIELD_BOTTOM;
    219    return mc_header;
    220 }
    221 
    222 static unsigned pos(int pos, int mov, int max) {
    223    int ret = pos + mov;
    224    if (pos < 0)
    225       return 0;
    226    if (pos >= max)
    227       return max-1;
    228    return ret;
    229 }
    230 
    231 /* because we want -1 / 2 = -1 */
    232 static int div_down(int val, int mult) {
    233    val &= ~(mult - 1);
    234    return val / mult;
    235 }
    236 
    237 static int div_up(int val, int mult) {
    238    val += mult - 1;
    239    return val / mult;
    240 }
    241 
    242 static INLINE void
    243 nouveau_vpe_mb_mv(struct nouveau_decoder *dec, unsigned mc_header,
    244                    bool luma, bool frame, bool forward, bool vert,
    245                    int x, int y, const short motions[2],
    246                    unsigned surface, bool first)
    247 {
    248    unsigned mc_vector;
    249    int mv_horizontal = motions[0];
    250    int mv_vertical = motions[1];
    251    int mv2 = mc_header & NV17_MPEG_CMD_CHROMA_MV_HEADER_COUNT_2;
    252    unsigned width = dec->base.width;
    253    unsigned height = dec->base.height;
    254    if (mv2)
    255       mv_vertical = div_down(mv_vertical, 2);
    256    assert(frame); // Untested for non-frames
    257    if (!frame)
    258       height *= 2;
    259 
    260    mc_header |= surface << NV17_MPEG_CMD_CHROMA_MV_HEADER_SURFACE__SHIFT;
    261    if (!luma) {
    262       mv_vertical = div_up(mv_vertical, 2);
    263       mv_horizontal = div_up(mv_horizontal, 2);
    264       height /= 2;
    265    }
    266    mc_header |= nouveau_vpe_mb_mv_flags(luma, mv_horizontal, mv_vertical, forward, first, vert);
    267    nouveau_vpe_write(dec, mc_header);
    268 
    269    mc_vector = NV17_MPEG_CMD_MV_COORDS_OP_MV_COORDS;
    270    if (luma)
    271       mc_vector |= pos(x, div_down(mv_horizontal, 2), width);
    272    else
    273       mc_vector |= pos(x, mv_horizontal & ~1, width);
    274    if (!mv2)
    275       mc_vector |= pos(y, div_down(mv_vertical, 2), height) << NV17_MPEG_CMD_MV_COORDS_Y__SHIFT;
    276    else
    277       mc_vector |= pos(y, mv_vertical & ~1, height) << NV17_MPEG_CMD_MV_COORDS_Y__SHIFT;
    278    nouveau_vpe_write(dec, mc_vector);
    279 }
    280 
    281 static void
    282 nouveau_vpe_mb_mv_header(struct nouveau_decoder *dec,
    283                          const struct pipe_mpeg12_macroblock *mb,
    284                          bool luma)
    285 {
    286    bool frame = dec->picture_structure == PIPE_MPEG12_PICTURE_STRUCTURE_FRAME;
    287    unsigned base;
    288    bool forward, backward;
    289    int y, y2, x = mb->x * 16;
    290    if (luma)
    291       y = mb->y * (frame ? 16 : 32);
    292    else
    293       y = mb->y * (frame ? 8 : 16);
    294    if (frame)
    295       y2 = y;
    296    else
    297       y2 = y + (luma ? 16 : 8);
    298 
    299    forward = mb->macroblock_type & PIPE_MPEG12_MB_TYPE_MOTION_FORWARD;
    300    backward = mb->macroblock_type & PIPE_MPEG12_MB_TYPE_MOTION_BACKWARD;
    301    assert(!forward || dec->past < 8);
    302    assert(!backward || dec->future < 8);
    303    if (frame) {
    304       switch (mb->macroblock_modes.bits.frame_motion_type) {
    305       case PIPE_MPEG12_MO_TYPE_FRAME: goto mv1;
    306       case PIPE_MPEG12_MO_TYPE_FIELD: goto mv2;
    307       case PIPE_MPEG12_MO_TYPE_DUAL_PRIME: {
    308          base = NV17_MPEG_CMD_CHROMA_MV_HEADER_COUNT_2;
    309          if (forward) {
    310             nouveau_vpe_mb_mv(dec, base, luma, frame, TRUE, FALSE,
    311                               x, y, mb->PMV[0][0], dec->past, TRUE);
    312             nouveau_vpe_mb_mv(dec, base, luma, frame, TRUE, TRUE,
    313                               x, y2, mb->PMV[0][0], dec->past, FALSE);
    314          }
    315          if (backward && forward) {
    316             nouveau_vpe_mb_mv(dec, base, luma, frame, !forward, TRUE,
    317                               x, y, mb->PMV[1][0], dec->future, TRUE);
    318             nouveau_vpe_mb_mv(dec, base, luma, frame, !forward, FALSE,
    319                               x, y2, mb->PMV[1][1], dec->future, FALSE);
    320          } else assert(!backward);
    321          break;
    322       }
    323       default: assert(0);
    324       }
    325    } else {
    326       switch (mb->macroblock_modes.bits.field_motion_type) {
    327       case PIPE_MPEG12_MO_TYPE_FIELD: goto mv1;
    328       case PIPE_MPEG12_MO_TYPE_16x8: goto mv2;
    329       case PIPE_MPEG12_MO_TYPE_DUAL_PRIME: {
    330       base = NV17_MPEG_CMD_CHROMA_MV_HEADER_MV_SPLIT_HALF_MB;
    331          if (frame)
    332             base |= NV17_MPEG_CMD_CHROMA_MV_HEADER_TYPE_FRAME;
    333          if (forward)
    334             nouveau_vpe_mb_mv(dec, base, luma, frame, TRUE,
    335                               dec->picture_structure != PIPE_MPEG12_PICTURE_STRUCTURE_FIELD_TOP,
    336                               x, y, mb->PMV[0][0], dec->past, TRUE);
    337          if (backward && forward)
    338             nouveau_vpe_mb_mv(dec, base, luma, frame, FALSE,
    339                               dec->picture_structure == PIPE_MPEG12_PICTURE_STRUCTURE_FIELD_TOP,
    340                               x, y, mb->PMV[0][1], dec->future, TRUE);
    341          else assert(!backward);
    342          break;
    343       }
    344       default: assert(0);
    345       }
    346    }
    347    return;
    348 
    349 mv1:
    350    base = NV17_MPEG_CMD_CHROMA_MV_HEADER_MV_SPLIT_HALF_MB;
    351    if (frame)
    352        base |= NV17_MPEG_CMD_CHROMA_MV_HEADER_TYPE_FRAME;
    353     /* frame 16x16 */
    354    if (forward)
    355        nouveau_vpe_mb_mv(dec, base, luma, frame, TRUE, FALSE,
    356                          x, y, mb->PMV[0][0], dec->past, TRUE);
    357    if (backward)
    358        nouveau_vpe_mb_mv(dec, base, luma, frame, !forward, FALSE,
    359                          x, y, mb->PMV[0][1], dec->future, TRUE);
    360     return;
    361 
    362 mv2:
    363    base = NV17_MPEG_CMD_CHROMA_MV_HEADER_COUNT_2;
    364    if (!frame)
    365       base |= NV17_MPEG_CMD_CHROMA_MV_HEADER_MV_SPLIT_HALF_MB;
    366    if (forward) {
    367       nouveau_vpe_mb_mv(dec, base, luma, frame, TRUE,
    368                         mb->motion_vertical_field_select & PIPE_MPEG12_FS_FIRST_FORWARD,
    369                         x, y, mb->PMV[0][0], dec->past, TRUE);
    370       nouveau_vpe_mb_mv(dec, base, luma, frame, TRUE,
    371                         mb->motion_vertical_field_select & PIPE_MPEG12_FS_SECOND_FORWARD,
    372                         x, y2, mb->PMV[1][0], dec->past, FALSE);
    373    }
    374    if (backward) {
    375       nouveau_vpe_mb_mv(dec, base, luma, frame, !forward,
    376                         mb->motion_vertical_field_select & PIPE_MPEG12_FS_FIRST_BACKWARD,
    377                         x, y, mb->PMV[0][1], dec->future, TRUE);
    378       nouveau_vpe_mb_mv(dec, base, luma, frame, !forward,
    379                         mb->motion_vertical_field_select & PIPE_MPEG12_FS_SECOND_BACKWARD,
    380                         x, y2, mb->PMV[1][1], dec->future, FALSE);
    381    }
    382 }
    383 
    384 static unsigned
    385 nouveau_decoder_surface_index(struct nouveau_decoder *dec,
    386                               struct pipe_video_buffer *buffer)
    387 {
    388    struct nouveau_video_buffer *buf = (struct nouveau_video_buffer *)buffer;
    389    struct nouveau_pushbuf *push = dec->push;
    390    struct nouveau_bo *bo_y = nv04_resource(buf->resources[0])->bo;
    391    struct nouveau_bo *bo_c = nv04_resource(buf->resources[1])->bo;
    392 
    393    unsigned i;
    394 
    395    if (!buf)
    396       return 8;
    397    for (i = 0; i < dec->num_surfaces; ++i) {
    398       if (dec->surfaces[i] == buf)
    399          return i;
    400    }
    401    assert(i < 8);
    402    dec->surfaces[i] = buf;
    403    dec->num_surfaces++;
    404 
    405    nouveau_bufctx_reset(dec->bufctx, NV31_VIDEO_BIND_IMG(i));
    406 
    407 #define BCTX_ARGS dec->bufctx, NV31_VIDEO_BIND_IMG(i), NOUVEAU_BO_RDWR
    408    BEGIN_NV04(push, NV31_MPEG(IMAGE_Y_OFFSET(i)), 2);
    409    PUSH_MTHDl(push, NV31_MPEG(IMAGE_Y_OFFSET(i)), bo_y, 0, BCTX_ARGS);
    410    PUSH_MTHDl(push, NV31_MPEG(IMAGE_C_OFFSET(i)), bo_c, 0, BCTX_ARGS);
    411 #undef BCTX_ARGS
    412 
    413    return i;
    414 }
    415 
    416 static void
    417 nouveau_decoder_begin_frame(struct pipe_video_decoder *decoder,
    418                             struct pipe_video_buffer *target,
    419                             struct pipe_picture_desc *picture)
    420 {
    421 }
    422 
    423 static void
    424 nouveau_decoder_decode_macroblock(struct pipe_video_decoder *decoder,
    425                                   struct pipe_video_buffer *target,
    426                                   struct pipe_picture_desc *picture,
    427                                   const struct pipe_macroblock *pipe_mb,
    428                                   unsigned num_macroblocks)
    429 {
    430    struct nouveau_decoder *dec = (struct nouveau_decoder *)decoder;
    431    struct pipe_mpeg12_picture_desc *desc = (struct pipe_mpeg12_picture_desc*)picture;
    432    const struct pipe_mpeg12_macroblock *mb;
    433    unsigned i;
    434    assert(target->width == decoder->width);
    435    assert(target->height == decoder->height);
    436 
    437    dec->current = nouveau_decoder_surface_index(dec, target);
    438    assert(dec->current < 8);
    439    dec->picture_structure = desc->picture_structure;
    440    if (desc->ref[1])
    441       dec->future = nouveau_decoder_surface_index(dec, desc->ref[1]);
    442    if (desc->ref[0])
    443       dec->past = nouveau_decoder_surface_index(dec, desc->ref[0]);
    444 
    445    if (nouveau_vpe_init(dec)) return;
    446    mb = (const struct pipe_mpeg12_macroblock *)pipe_mb;
    447    for (i = 0; i < num_macroblocks; ++i, mb++) {
    448       if (mb->macroblock_type & PIPE_MPEG12_MB_TYPE_INTRA) {
    449          nouveau_vpe_mb_dct_header(dec, mb, TRUE);
    450          nouveau_vpe_mb_dct_header(dec, mb, FALSE);
    451       } else {
    452          nouveau_vpe_mb_mv_header(dec, mb, TRUE);
    453          nouveau_vpe_mb_dct_header(dec, mb, TRUE);
    454 
    455          nouveau_vpe_mb_mv_header(dec, mb, FALSE);
    456          nouveau_vpe_mb_dct_header(dec, mb, FALSE);
    457       }
    458       if (dec->base.entrypoint <= PIPE_VIDEO_ENTRYPOINT_IDCT)
    459          nouveau_vpe_mb_dct_blocks(dec, mb);
    460       else
    461          nouveau_vpe_mb_data_blocks(dec, mb);
    462    }
    463 }
    464 
    465 static void
    466 nouveau_decoder_end_frame(struct pipe_video_decoder *decoder,
    467                           struct pipe_video_buffer *target,
    468                           struct pipe_picture_desc *picture)
    469 {
    470 }
    471 
    472 static void
    473 nouveau_decoder_flush(struct pipe_video_decoder *decoder)
    474 {
    475    struct nouveau_decoder *dec = (struct nouveau_decoder *)decoder;
    476    if (dec->ofs)
    477       nouveau_vpe_fini(dec);
    478 }
    479 
    480 static void
    481 nouveau_decoder_destroy(struct pipe_video_decoder *decoder)
    482 {
    483    struct nouveau_decoder *dec = (struct nouveau_decoder*)decoder;
    484 
    485    if (dec->data_bo)
    486       nouveau_bo_ref(NULL, &dec->data_bo);
    487    if (dec->cmd_bo)
    488       nouveau_bo_ref(NULL, &dec->cmd_bo);
    489    if (dec->fence_bo)
    490       nouveau_bo_ref(NULL, &dec->fence_bo);
    491 
    492    nouveau_object_del(&dec->mpeg);
    493 
    494    if (dec->bufctx)
    495       nouveau_bufctx_del(&dec->bufctx);
    496    if (dec->push)
    497       nouveau_pushbuf_del(&dec->push);
    498    if (dec->client)
    499       nouveau_client_del(&dec->client);
    500    if (dec->chan)
    501       nouveau_object_del(&dec->chan);
    502 
    503    FREE(dec);
    504 }
    505 
    506 static struct pipe_video_decoder *
    507 nouveau_create_decoder(struct pipe_context *context,
    508                        struct nouveau_screen *screen,
    509                        enum pipe_video_profile profile,
    510                        enum pipe_video_entrypoint entrypoint,
    511                        enum pipe_video_chroma_format chroma_format,
    512                        unsigned width, unsigned height,
    513                        unsigned max_references, bool expect_chunked_decode)
    514 {
    515    struct nv04_fifo nv04_data = { .vram = 0xbeef0201, .gart = 0xbeef0202 };
    516    struct nouveau_object *mpeg = NULL;
    517    struct nouveau_decoder *dec;
    518    struct nouveau_pushbuf *push;
    519    int ret;
    520    bool is8274 = screen->device->chipset > 0x80;
    521 
    522    debug_printf("Acceleration level: %s\n", entrypoint <= PIPE_VIDEO_ENTRYPOINT_BITSTREAM ? "bit":
    523                                             entrypoint == PIPE_VIDEO_ENTRYPOINT_IDCT ? "IDCT" : "MC");
    524 
    525    if (getenv("XVMC_VL"))
    526       goto vl;
    527    if (u_reduce_video_profile(profile) != PIPE_VIDEO_CODEC_MPEG12)
    528       goto vl;
    529    if (screen->device->chipset >= 0x98 && screen->device->chipset != 0xa0)
    530       goto vl;
    531 
    532    dec = CALLOC_STRUCT(nouveau_decoder);
    533    if (!dec)
    534       return NULL;
    535 
    536    ret = nouveau_object_new(&screen->device->object, 0,
    537                             NOUVEAU_FIFO_CHANNEL_CLASS,
    538                             &nv04_data, sizeof(nv04_data), &dec->chan);
    539    if (ret)
    540       goto fail;
    541    ret = nouveau_client_new(screen->device, &dec->client);
    542    if (ret)
    543       goto fail;
    544    ret = nouveau_pushbuf_new(dec->client, dec->chan, 2, 4096, 1, &dec->push);
    545    if (ret)
    546       goto fail;
    547    ret = nouveau_bufctx_new(dec->client, NV31_VIDEO_BIND_COUNT, &dec->bufctx);
    548    if (ret)
    549       goto fail;
    550    push = dec->push;
    551 
    552    width = align(width, 64);
    553    height = align(height, 64);
    554 
    555    if (is8274)
    556       ret = nouveau_object_new(dec->chan, 0xbeef8274, NV84_MPEG_CLASS, NULL, 0,
    557                                &mpeg);
    558    else
    559       ret = nouveau_object_new(dec->chan, 0xbeef3174, NV31_MPEG_CLASS, NULL, 0,
    560                                &mpeg);
    561    if (ret < 0) {
    562       debug_printf("Creation failed: %s (%i)\n", strerror(-ret), ret);
    563       return NULL;
    564    }
    565 
    566    dec->mpeg = mpeg;
    567    dec->base.context = context;
    568    dec->base.profile = profile;
    569    dec->base.entrypoint = entrypoint;
    570    dec->base.chroma_format = chroma_format;
    571    dec->base.width = width;
    572    dec->base.height = height;
    573    dec->base.max_references = max_references;
    574    dec->base.destroy = nouveau_decoder_destroy;
    575    dec->base.begin_frame = nouveau_decoder_begin_frame;
    576    dec->base.decode_macroblock = nouveau_decoder_decode_macroblock;
    577    dec->base.end_frame = nouveau_decoder_end_frame;
    578    dec->base.flush = nouveau_decoder_flush;
    579    dec->screen = screen;
    580 
    581    ret = nouveau_bo_new(dec->screen->device, NOUVEAU_BO_GART | NOUVEAU_BO_MAP,
    582                         0, 1024 * 1024, NULL, &dec->cmd_bo);
    583    if (ret)
    584       goto fail;
    585 
    586    ret = nouveau_bo_new(dec->screen->device, NOUVEAU_BO_GART | NOUVEAU_BO_MAP,
    587                         0, width * height * 6, NULL, &dec->data_bo);
    588    if (ret)
    589       goto fail;
    590 
    591    /* we don't need the fence, the kernel sync's for us */
    592 #if 0
    593    ret = nouveau_bo_new(dec->screen->device, NOUVEAU_BO_GART | NOUVEAU_BO_MAP,
    594                         0, 4096, NULL, &dec->fence_bo);
    595    if (ret)
    596       goto fail;
    597    nouveau_bo_map(dec->fence_bo, NOUVEAU_BO_RDWR, NULL);
    598    dec->fence_map = dec->fence_bo->map;
    599    dec->fence_map[0] = 0;
    600 #endif
    601 
    602    nouveau_pushbuf_bufctx(dec->push, dec->bufctx);
    603    nouveau_pushbuf_space(push, 32, 4, 0);
    604 
    605    BEGIN_NV04(push, SUBC_MPEG(NV01_SUBCHAN_OBJECT), 1);
    606    PUSH_DATA (push, dec->mpeg->handle);
    607 
    608    BEGIN_NV04(push, NV31_MPEG(DMA_CMD), 1);
    609    PUSH_DATA (push, nv04_data.gart);
    610 
    611    BEGIN_NV04(push, NV31_MPEG(DMA_DATA), 1);
    612    PUSH_DATA (push, nv04_data.gart);
    613 
    614    BEGIN_NV04(push, NV31_MPEG(DMA_IMAGE), 1);
    615    PUSH_DATA (push, nv04_data.vram);
    616 
    617    BEGIN_NV04(push, NV31_MPEG(PITCH), 2);
    618    PUSH_DATA (push, width | NV31_MPEG_PITCH_UNK);
    619    PUSH_DATA (push, (height << NV31_MPEG_SIZE_H__SHIFT) | width);
    620 
    621    BEGIN_NV04(push, NV31_MPEG(FORMAT), 2);
    622    PUSH_DATA (push, 0);
    623    switch (entrypoint) {
    624       case PIPE_VIDEO_ENTRYPOINT_BITSTREAM: PUSH_DATA (push, 0x100); break;
    625       case PIPE_VIDEO_ENTRYPOINT_IDCT: PUSH_DATA (push, 1); break;
    626       case PIPE_VIDEO_ENTRYPOINT_MC: PUSH_DATA (push, 0); break;
    627       default: assert(0);
    628    }
    629 
    630    if (is8274) {
    631       BEGIN_NV04(push, NV84_MPEG(DMA_QUERY), 1);
    632       PUSH_DATA (push, nv04_data.vram);
    633 #if 0
    634       BEGIN_NV04(push, NV84_MPEG(QUERY_OFFSET), 2);
    635       PUSH_DATA (push, dec->fence_bo->offset);
    636       PUSH_DATA (push, dec->fence_seq);
    637 #endif
    638    }
    639 
    640    ret = nouveau_vpe_init(dec);
    641    if (ret)
    642       goto fail;
    643    nouveau_vpe_fini(dec);
    644    return &dec->base;
    645 
    646 fail:
    647    nouveau_decoder_destroy(&dec->base);
    648    return NULL;
    649 
    650 vl:
    651    debug_printf("Using g3dvl renderer\n");
    652    return vl_create_decoder(context, profile, entrypoint,
    653                             chroma_format, width, height,
    654                             max_references, expect_chunked_decode);
    655 }
    656 
    657 static struct pipe_sampler_view **
    658 nouveau_video_buffer_sampler_view_planes(struct pipe_video_buffer *buffer)
    659 {
    660    struct nouveau_video_buffer *buf = (struct nouveau_video_buffer *)buffer;
    661    struct pipe_sampler_view sv_templ;
    662    struct pipe_context *pipe;
    663    unsigned i;
    664 
    665    assert(buf);
    666 
    667    pipe = buf->base.context;
    668 
    669    for (i = 0; i < buf->num_planes; ++i ) {
    670       if (!buf->sampler_view_planes[i]) {
    671          memset(&sv_templ, 0, sizeof(sv_templ));
    672          u_sampler_view_default_template(&sv_templ, buf->resources[i], buf->resources[i]->format);
    673 
    674          if (util_format_get_nr_components(buf->resources[i]->format) == 1)
    675             sv_templ.swizzle_r = sv_templ.swizzle_g = sv_templ.swizzle_b = sv_templ.swizzle_a = PIPE_SWIZZLE_RED;
    676 
    677          buf->sampler_view_planes[i] = pipe->create_sampler_view(pipe, buf->resources[i], &sv_templ);
    678          if (!buf->sampler_view_planes[i])
    679             goto error;
    680       }
    681    }
    682 
    683    return buf->sampler_view_planes;
    684 
    685 error:
    686    for (i = 0; i < buf->num_planes; ++i )
    687       pipe_sampler_view_reference(&buf->sampler_view_planes[i], NULL);
    688 
    689    return NULL;
    690 }
    691 
    692 static struct pipe_sampler_view **
    693 nouveau_video_buffer_sampler_view_components(struct pipe_video_buffer *buffer)
    694 {
    695    struct nouveau_video_buffer *buf = (struct nouveau_video_buffer *)buffer;
    696    struct pipe_sampler_view sv_templ;
    697    struct pipe_context *pipe;
    698    unsigned i, j, component;
    699 
    700    assert(buf);
    701 
    702    pipe = buf->base.context;
    703 
    704    for (component = 0, i = 0; i < buf->num_planes; ++i ) {
    705       unsigned nr_components = util_format_get_nr_components(buf->resources[i]->format);
    706 
    707       for (j = 0; j < nr_components; ++j, ++component) {
    708          assert(component < VL_NUM_COMPONENTS);
    709 
    710          if (!buf->sampler_view_components[component]) {
    711             memset(&sv_templ, 0, sizeof(sv_templ));
    712             u_sampler_view_default_template(&sv_templ, buf->resources[i], buf->resources[i]->format);
    713             sv_templ.swizzle_r = sv_templ.swizzle_g = sv_templ.swizzle_b = PIPE_SWIZZLE_RED + j;
    714             sv_templ.swizzle_a = PIPE_SWIZZLE_ONE;
    715             buf->sampler_view_components[component] = pipe->create_sampler_view(pipe, buf->resources[i], &sv_templ);
    716             if (!buf->sampler_view_components[component])
    717                goto error;
    718          }
    719       }
    720    }
    721 
    722    return buf->sampler_view_components;
    723 
    724 error:
    725    for (i = 0; i < 3; ++i )
    726       pipe_sampler_view_reference(&buf->sampler_view_components[i], NULL);
    727 
    728    return NULL;
    729 }
    730 
    731 static struct pipe_surface **
    732 nouveau_video_buffer_surfaces(struct pipe_video_buffer *buffer)
    733 {
    734    struct nouveau_video_buffer *buf = (struct nouveau_video_buffer *)buffer;
    735    struct pipe_surface surf_templ;
    736    struct pipe_context *pipe;
    737    unsigned i;
    738 
    739    assert(buf);
    740 
    741    pipe = buf->base.context;
    742 
    743    for (i = 0; i < buf->num_planes; ++i ) {
    744       if (!buf->surfaces[i]) {
    745          memset(&surf_templ, 0, sizeof(surf_templ));
    746          surf_templ.format = buf->resources[i]->format;
    747          surf_templ.usage = PIPE_BIND_SAMPLER_VIEW | PIPE_BIND_RENDER_TARGET;
    748          buf->surfaces[i] = pipe->create_surface(pipe, buf->resources[i], &surf_templ);
    749          if (!buf->surfaces[i])
    750             goto error;
    751       }
    752    }
    753 
    754    return buf->surfaces;
    755 
    756 error:
    757    for (i = 0; i < buf->num_planes; ++i )
    758       pipe_surface_reference(&buf->surfaces[i], NULL);
    759 
    760    return NULL;
    761 }
    762 
    763 static void
    764 nouveau_video_buffer_destroy(struct pipe_video_buffer *buffer)
    765 {
    766    struct nouveau_video_buffer *buf = (struct nouveau_video_buffer *)buffer;
    767    unsigned i;
    768 
    769    assert(buf);
    770 
    771    for (i = 0; i < buf->num_planes; ++i) {
    772       pipe_surface_reference(&buf->surfaces[i], NULL);
    773       pipe_sampler_view_reference(&buf->sampler_view_planes[i], NULL);
    774       pipe_sampler_view_reference(&buf->sampler_view_components[i], NULL);
    775       pipe_resource_reference(&buf->resources[i], NULL);
    776    }
    777    for (;i < 3;++i)
    778       pipe_sampler_view_reference(&buf->sampler_view_components[i], NULL);
    779 
    780    FREE(buffer);
    781 }
    782 
    783 static struct pipe_video_buffer *
    784 nouveau_video_buffer_create(struct pipe_context *pipe,
    785                             struct nouveau_screen *screen,
    786                             const struct pipe_video_buffer *templat)
    787 {
    788    struct nouveau_video_buffer *buffer;
    789    struct pipe_resource templ;
    790    unsigned width, height;
    791 
    792    /* Only do a linear surface when a hardware decoder is used
    793     * hardware decoder is only supported on some chipsets
    794     * and it only supports the NV12 format
    795     */
    796    if (templat->buffer_format != PIPE_FORMAT_NV12 || getenv("XVMC_VL") ||
    797        (screen->device->chipset >= 0x98 && screen->device->chipset != 0xa0))
    798       return vl_video_buffer_create(pipe, templat);
    799 
    800    assert(templat->chroma_format == PIPE_VIDEO_CHROMA_FORMAT_420);
    801    width = align(templat->width, 64);
    802    height = align(templat->height, 64);
    803 
    804    buffer = CALLOC_STRUCT(nouveau_video_buffer);
    805    if (!buffer)
    806       return NULL;
    807 
    808    buffer->base.context = pipe;
    809    buffer->base.destroy = nouveau_video_buffer_destroy;
    810    buffer->base.get_sampler_view_planes = nouveau_video_buffer_sampler_view_planes;
    811    buffer->base.get_sampler_view_components = nouveau_video_buffer_sampler_view_components;
    812    buffer->base.get_surfaces = nouveau_video_buffer_surfaces;
    813    buffer->base.chroma_format = templat->chroma_format;
    814    buffer->base.width = width;
    815    buffer->base.height = height;
    816    buffer->num_planes = 2;
    817 
    818    memset(&templ, 0, sizeof(templ));
    819    templ.target = PIPE_TEXTURE_2D;
    820    templ.format = PIPE_FORMAT_R8_UNORM;
    821    templ.width0 = width;
    822    templ.height0 = height;
    823    templ.depth0 = 1;
    824    templ.array_size = 1;
    825    templ.bind = PIPE_BIND_SAMPLER_VIEW | PIPE_BIND_RENDER_TARGET;
    826    templ.usage = PIPE_USAGE_STATIC;
    827    templ.flags = NOUVEAU_RESOURCE_FLAG_LINEAR;
    828 
    829    buffer->resources[0] = pipe->screen->resource_create(pipe->screen, &templ);
    830    if (!buffer->resources[0])
    831       goto error;
    832    templ.width0 /= 2;
    833    templ.height0 /= 2;
    834    templ.format = PIPE_FORMAT_R8G8_UNORM;
    835    buffer->resources[1] = pipe->screen->resource_create(pipe->screen, &templ);
    836    if (!buffer->resources[1])
    837       goto error;
    838    return &buffer->base;
    839 
    840 error:
    841    nouveau_video_buffer_destroy(&buffer->base);
    842    return NULL;
    843 }
    844 
    845 static int
    846 nouveau_screen_get_video_param(struct pipe_screen *pscreen,
    847                                enum pipe_video_profile profile,
    848                                enum pipe_video_cap param)
    849 {
    850    switch (param) {
    851    case PIPE_VIDEO_CAP_SUPPORTED:
    852       return vl_profile_supported(pscreen, profile);
    853    case PIPE_VIDEO_CAP_NPOT_TEXTURES:
    854       return 1;
    855    case PIPE_VIDEO_CAP_MAX_WIDTH:
    856    case PIPE_VIDEO_CAP_MAX_HEIGHT:
    857       return vl_video_buffer_max_size(pscreen);
    858    case PIPE_VIDEO_CAP_PREFERED_FORMAT:
    859       return PIPE_FORMAT_NV12;
    860    case PIPE_VIDEO_CAP_PREFERS_INTERLACED:
    861       return false;
    862    case PIPE_VIDEO_CAP_SUPPORTS_INTERLACED:
    863       return false;
    864    case PIPE_VIDEO_CAP_SUPPORTS_PROGRESSIVE:
    865       return true;
    866    default:
    867       debug_printf("unknown video param: %d\n", param);
    868       return 0;
    869    }
    870 }
    871 
    872 void
    873 nouveau_screen_init_vdec(struct nouveau_screen *screen)
    874 {
    875    screen->base.get_video_param = nouveau_screen_get_video_param;
    876    screen->base.is_video_format_supported = vl_video_buffer_is_format_supported;
    877 }
    878 
    879 static struct pipe_video_decoder *
    880 nouveau_context_create_decoder(struct pipe_context *context,
    881                                enum pipe_video_profile profile,
    882                                enum pipe_video_entrypoint entrypoint,
    883                                enum pipe_video_chroma_format chroma_format,
    884                                unsigned width, unsigned height,
    885                                unsigned max_references, bool expect_chunked_decode)
    886 {
    887    struct nouveau_screen *screen = nouveau_context(context)->screen;
    888    return nouveau_create_decoder(context, screen, profile, entrypoint,
    889                                  chroma_format, width, height,
    890                                  max_references, expect_chunked_decode);
    891 }
    892 
    893 static struct pipe_video_buffer *
    894 nouveau_context_video_buffer_create(struct pipe_context *pipe,
    895                                     const struct pipe_video_buffer *templat)
    896 {
    897    struct nouveau_screen *screen = nouveau_context(pipe)->screen;
    898    return nouveau_video_buffer_create(pipe, screen, templat);
    899 }
    900 
    901 void
    902 nouveau_context_init_vdec(struct nouveau_context *nv)
    903 {
    904    nv->pipe.create_video_decoder = nouveau_context_create_decoder;
    905    nv->pipe.create_video_buffer = nouveau_context_video_buffer_create;
    906 }
    907