2 * Copyright (c) 2004 The Unichrome project. All rights reserved.
4 * This program is free software; you can redistribute it and/or modify it under
5 * the terms of the GNU General Public License as published by the Free Software
6 * Foundation; either version 2, or (at your option) any later version.
8 * This program is distributed in the hope that it will be useful, but WITHOUT
9 * ANY WARRANTIES OR REPRESENTATIONS; without even the implied warranty of
10 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
11 * See the GNU General Public License for more details.
13 * You should have received a copy of the GNU General Public License along with
14 * this program; if not, write to the Free Software Foundation, Inc.,
15 * 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
22 #include <vlc_codec.h>
25 #include "mpeg2_internal.h"
28 static uint8_t zig_zag_scan[64] ATTR_ALIGN(16) =
30 /* Zig-Zag scan pattern */
31 0, 1, 8,16, 9, 2, 3,10,
32 17,24,32,25,18,11, 4, 5,
33 12,19,26,33,40,48,41,34,
34 27,20,13, 6, 7,14,21,28,
35 35,42,49,56,57,50,43,36,
36 29,22,15,23,30,37,44,51,
37 58,59,52,45,38,31,39,46,
38 53,60,61,54,47,55,62,63
41 static uint8_t alternate_scan [64] ATTR_ALIGN(16) =
43 /* Alternate scan pattern */
44 0,8,16,24,1,9,2,10,17,25,32,40,48,56,57,49,
45 41,33,26,18,3,11,4,12,19,27,34,42,50,58,35,43,
46 51,59,20,28,5,13,6,14,21,29,36,44,52,60,37,45,
47 53,61,22,30,7,15,23,31,38,46,54,62,39,47,55,63
50 void mpeg2_xxmc_choose_coding(decoder_t *p_dec,
51 mpeg2_decoder_t * const decoder, picture_t *picture,
52 double aspect_ratio, int flags)
56 //vlc_fourcc_t decoder_format = picture->format.i_chroma;
57 //if (decoder_format == VLC_FOURCC('X','x','M','C')) {
58 vlc_xxmc_t *xxmc = (vlc_xxmc_t *) picture->p_data;
61 * Make a request for acceleration type and mpeg coding from
65 xxmc->fallback_format = VLC_FOURCC('Y','V','1','2');
66 xxmc->acceleration = VLC_XVMC_ACCEL_VLD;//| VLC_XVMC_ACCEL_IDCT| VLC_XVMC_ACCEL_MOCOMP ;
68 //msg_Dbg(p_dec, "mpeg2_xxmc_choose_coding 2");
70 * Standard MOCOMP / IDCT XvMC implementation for interlaced streams
71 * is buggy. The bug is inherited from the old XvMC driver. Don't use it until
72 * it has been fixed. (A volunteer ?)
75 //if ( decoder->picture_structure != 3 ) {
76 //xxmc->acceleration &= ~( VLC_XVMC_ACCEL_IDCT | VLC_XVMC_ACCEL_MOCOMP );
79 xxmc->mpeg = (decoder->mpeg1) ? VLC_XVMC_MPEG_1:VLC_XVMC_MPEG_2;
80 xxmc->proc_xxmc_update_frame( picture,
84 VLC_IMGFMT_XXMC, flags );
89 void mpeg2_xxmc_slice( mpeg2dec_t *mpeg2dec, picture_t *picture,
90 int code, uint8_t *buffer, int size)
92 mpeg2_decoder_t * const decoder = &(mpeg2dec->decoder);
93 picture = (picture_t *)mpeg2dec->fbuf[0]->id;
94 vlc_xxmc_t *xxmc = (vlc_xxmc_t *) picture->p_data;
95 vlc_vld_frame_t *vft = &xxmc->vld_frame;
96 unsigned mb_frame_height;
98 const uint8_t *scan_pattern;
102 //mpeg2_skip(mpeg2dec, 1);
103 //frame->bad_frame = 1;
106 * Check that first field went through OK. Otherwise,
107 * indicate bad frame.
109 if (decoder->second_field)
111 mpeg2dec->xvmc_last_slice_code = (xxmc->decoded) ? 0 : -1;
116 mpeg2dec->xvmc_last_slice_code = 0;
120 //(!(decoder->mpeg1) && (decoder->progressive_sequence)) ?
121 //2*((decoder->height+31) >> 5) :
122 (decoder->height+15) >> 4;
123 mpeg2dec->xxmc_mb_pic_height = (decoder->picture_structure == FRAME_PICTURE ) ?
124 mb_frame_height : mb_frame_height >> 1;
128 vft->mv_ranges[0][0] = decoder->b_motion.f_code[0];
129 vft->mv_ranges[0][1] = decoder->b_motion.f_code[0];
130 vft->mv_ranges[1][0] = decoder->f_motion.f_code[0];
131 vft->mv_ranges[1][1] = decoder->f_motion.f_code[0];
135 vft->mv_ranges[0][0] = decoder->b_motion.f_code[0];
136 vft->mv_ranges[0][1] = decoder->b_motion.f_code[1];
137 vft->mv_ranges[1][0] = decoder->f_motion.f_code[0];
138 vft->mv_ranges[1][1] = decoder->f_motion.f_code[1];
141 vft->picture_structure = decoder->picture_structure;
142 vft->picture_coding_type = decoder->coding_type;
143 vft->mpeg_coding = (decoder->mpeg1) ? 0 : 1;
144 vft->progressive_sequence = decoder->progressive_sequence;
145 vft->scan = (decoder->scan == mpeg2_scan_alt);
146 vft->pred_dct_frame = decoder->frame_pred_frame_dct;
147 vft->concealment_motion_vectors =
148 decoder->concealment_motion_vectors;
149 vft->q_scale_type = decoder->q_scale_type;
150 vft->intra_vlc_format = decoder->intra_vlc_format;
151 vft->intra_dc_precision = 7 - decoder->intra_dc_precision;
152 vft->second_field = decoder->second_field;
155 * Translation of libmpeg2's Q-matrix layout to VLD XvMC's.
156 * Errors here will give
157 * blocky artifacts and sometimes wrong colors.
160 scan_pattern = (vft->scan) ? alternate_scan : zig_zag_scan;
161 if( (vft->load_intra_quantizer_matrix = decoder->load_intra_quantizer_matrix) )
165 vft->intra_quantizer_matrix[scan_pattern[i]] =
166 mpeg2dec->quantizer_matrix[0][decoder->scan[i]];
170 if( (vft->load_non_intra_quantizer_matrix = decoder->load_non_intra_quantizer_matrix) )
174 vft->non_intra_quantizer_matrix[scan_pattern[i]] =
175 mpeg2dec->quantizer_matrix[1][decoder->scan[i]];
178 decoder->load_intra_quantizer_matrix = 0;
179 decoder->load_non_intra_quantizer_matrix = 0;
181 vft->forward_reference_picture = (picture_t *)mpeg2dec->ptr_forward_ref_picture;
182 vft->backward_reference_picture = (picture_t *)mpeg2dec->ptr_backward_ref_picture;
185 printf("\nSLICE DATA !!!! size=%d", size-4);
187 if ( vft->forward_reference_picture != NULL && ((vlc_xxmc_t *)
188 vft->forward_reference_picture->p_data)->slice_data_size > 10)
190 printf("\nFORWARD SLICE DATA !!!! size=%d\n", ((vlc_xxmc_t *)
191 vft->forward_reference_picture->p_data)->slice_data_size);
194 printf("%d ", *(((vlc_xxmc_t *) vft->forward_reference_picture->p_data)->slice_data+i));
196 printf("\nFORWARD SLICE DATA END!!!!\n");
198 if ( vft->backward_reference_picture != NULL && ((vlc_xxmc_t *)
199 vft->backward_reference_picture->p_data)->slice_data_size > 10)
201 printf("\nBACKWARD SLICE DATA !!!! size=%d\n", ((vlc_xxmc_t *)
202 vft->backward_reference_picture->p_data)->slice_data_size);
205 printf("%d ", *(((vlc_xxmc_t *) vft->backward_reference_picture->p_data)->slice_data+i));
207 printf("\nBACKWARD SLICE DATA END!!!!\n");
211 xxmc->proc_xxmc_begin( picture );
212 if (xxmc->result != 0)
214 /* "mpeg2_xxmc_slice begin failed" */
215 /* xmc->proc_xxmc_flushsync( picture ); */
216 xxmc->proc_xxmc_flush( picture );
217 mpeg2dec->xvmc_last_slice_code=-1;
221 if( ((code == mpeg2dec->xvmc_last_slice_code + 1 ||
222 code == mpeg2dec->xvmc_last_slice_code)) &&
223 code <= mpeg2dec->xxmc_mb_pic_height )
226 * Send this slice to the output plugin. May stall for a long
227 * time in proc_slice;
229 //mpeg2_skip(mpeg2dec, 1);
231 //frame->bad_frame = 1;
232 //size = mpeg2dec->chunk_ptr-mpeg2dec->chunk_start;
233 xxmc->slice_data_size = size;//mpeg2dec->buf_end - mpeg2dec->buf_start;
234 xxmc->slice_data = mpeg2dec->chunk_start;//buffer;
235 xxmc->slice_code = code;
236 xxmc->proc_xxmc_slice( picture );
238 if (xxmc->result != 0)
240 //xxmc->proc_xxmc_flushsync( picture );
241 xxmc->proc_xxmc_flush( picture );
242 mpeg2dec->xvmc_last_slice_code=-1;
245 if (code == mpeg2dec->xxmc_mb_pic_height)
248 * We've encountered the last slice of this frame.
249 * Release the decoder for a new frame and, if all
250 * went well, tell libmpeg2 that we are ready.
253 mpeg2_xxmc_vld_frame_complete(mpeg2dec,picture,code);
256 else if (code == mpeg2dec->xvmc_last_slice_code + 1)
258 //xxmc->proc_xxmc_flush( picture );
261 * Keep track of slices.
263 mpeg2dec->xvmc_last_slice_code++;
269 * An error has occured.
272 //printf("VLD XvMC: Slice error: code=%d\tlast slice code=%d\tmb_pic_height=%d\n", code, mpeg2dec->xvmc_last_slice_code,mpeg2dec->xxmc_mb_pic_height);
273 mpeg2dec->xvmc_last_slice_code = -1;
274 xxmc->proc_xxmc_flush( picture );
279 void mpeg2_xxmc_vld_frame_complete(mpeg2dec_t *mpeg2dec, picture_t *picture, int code)
281 vlc_xxmc_t *xxmc = (vlc_xxmc_t *) picture->p_data;
282 vlc_vld_frame_t *vft = &xxmc->vld_frame;
287 if (mpeg2dec->xvmc_last_slice_code >= 1)
289 xxmc->proc_xxmc_flush( picture );
292 mpeg2dec->xvmc_last_slice_code=-1;
296 mpeg2dec->xvmc_last_slice_code++;
297 if (vft->picture_structure == 3 || vft->second_field)
299 if (xxmc->result == 0)
300 mpeg2_skip(mpeg2dec, 0);
301 //frame->bad_frame = 0;