FFmpeg: libavcodec/h264_mb_template.c Source File

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h264_mb_template.c

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1 /*

2 * H.26L/H.264/AVC/JVT/14496-10/... decoder

4 *

5 * This file is part of FFmpeg.

6 *

7 * FFmpeg is free software; you can redistribute it and/or

8 * modify it under the terms of the GNU Lesser General Public

9 * License as published by the Free Software Foundation; either

10 * version 2.1 of the License, or (at your option) any later version.

11 *

12 * FFmpeg is distributed in the hope that it will be useful,

13 * but WITHOUT ANY WARRANTY; without even the implied warranty of

14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU

15 * Lesser General Public License for more details.

16 *

17 * You should have received a copy of the GNU Lesser General Public

18 * License along with FFmpeg; if not, write to the Free Software

19 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA

20 */

22 #undef FUNC

23 #undef PIXEL_SHIFT

25 #if SIMPLE

26 # define FUNC(n) AV_JOIN(n ## _simple_, BITS)

27 # define PIXEL_SHIFT (BITS >> 4)

28 #else

29 # define FUNC(n) n ## _complex

30 # define PIXEL_SHIFT h->pixel_shift

31 #endif

33 #undef CHROMA_IDC

34 #define CHROMA_IDC 1

35 #include "h264_mc_template.c"

37 #undef CHROMA_IDC

38 #define CHROMA_IDC 2

39 #include "h264_mc_template.c"

41 static av_noinline void FUNC(hl_decode_mb)(H264Context *h)

42 {

43 const int mb_x = h->mb_x;

44 const int mb_y = h->mb_y;

45 const int mb_xy = h->mb_xy;

46 const int mb_type = h->cur_pic.mb_type[mb_xy];

47 uint8_t *dest_y, *dest_cb, *dest_cr;

48 int linesize, uvlinesize /*dct_offset*/;

49 int i, j;

50 int *block_offset = &h->block_offset[0];

51 const int transform_bypass = !SIMPLE && (h->qscale == 0 && h->sps.transform_bypass);

52 /* is_h264 should always be true if SVQ3 is disabled. */

53 const int is_h264 = !CONFIG_SVQ3_DECODER || SIMPLE || h->avctx->codec_id == AV_CODEC_ID_H264;

54 void (*idct_add)(uint8_t *dst, int16_t *block, int stride);

55 const int block_h = 16 >> h->chroma_y_shift;

56 const int chroma422 = CHROMA422(h);

58 dest_y = h->cur_pic.f.data[0] + ((mb_x << PIXEL_SHIFT) + mb_y * h->linesize) * 16;

59 dest_cb = h->cur_pic.f.data[1] + (mb_x << PIXEL_SHIFT) * 8 + mb_y * h->uvlinesize * block_h;

60 dest_cr = h->cur_pic.f.data[2] + (mb_x << PIXEL_SHIFT) * 8 + mb_y * h->uvlinesize * block_h;

62 h->vdsp.prefetch(dest_y + (h->mb_x & 3) * 4 * h->linesize + (64 << PIXEL_SHIFT), h->linesize, 4);

63 h->vdsp.prefetch(dest_cb + (h->mb_x & 7) * h->uvlinesize + (64 << PIXEL_SHIFT), dest_cr - dest_cb, 2);

65 h->list_counts[mb_xy] = h->list_count;

67 if (!SIMPLE && MB_FIELD(h)) {

68 linesize = h->mb_linesize = h->linesize * 2;

69 uvlinesize = h->mb_uvlinesize = h->uvlinesize * 2;

70 block_offset = &h->block_offset[48];

71 if (mb_y & 1) { // FIXME move out of this function?

72 dest_y -= h->linesize * 15;

73 dest_cb -= h->uvlinesize * (block_h - 1);

74 dest_cr -= h->uvlinesize * (block_h - 1);

75 }

76 if (FRAME_MBAFF(h)) {

77 int list;

78 for (list = 0; list < h->list_count; list++) {

79 if (!USES_LIST(mb_type, list))

80 continue;

81 if (IS_16X16(mb_type)) {

82 int8_t *ref = &h->ref_cache[list][scan8[0]];

83 fill_rectangle(ref, 4, 4, 8, (16 + *ref) ^ (h->mb_y & 1), 1);

84 } else {

85 for (i = 0; i < 16; i += 4) {

86 int ref = h->ref_cache[list][scan8[i]];

87 if (ref >= 0)

88 fill_rectangle(&h->ref_cache[list][scan8[i]], 2, 2,

89 8, (16 + ref) ^ (h->mb_y & 1), 1);

90 }

91 }

92 }

93 }

94 } else {

95 linesize = h->mb_linesize = h->linesize;

96 uvlinesize = h->mb_uvlinesize = h->uvlinesize;

97 // dct_offset = s->linesize * 16;

98 }

100 if (!SIMPLE && IS_INTRA_PCM(mb_type)) {

101 const int bit_depth = h->sps.bit_depth_luma;

102 if (PIXEL_SHIFT) {

103 int j;

104 GetBitContext gb;

105 init_get_bits(&gb, h->intra_pcm_ptr,

106 ff_h264_mb_sizes[h->sps.chroma_format_idc] * bit_depth);

107

108 for (i = 0; i < 16; i++) {

109 uint16_t *tmp_y = (uint16_t *)(dest_y + i * linesize);

110 for (j = 0; j < 16; j++)

111 tmp_y[j] = get_bits(&gb, bit_depth);

112 }

113 if (SIMPLE || !CONFIG_GRAY || !(h->flags & CODEC_FLAG_GRAY)) {

114 if (!h->sps.chroma_format_idc) {

115 for (i = 0; i < block_h; i++) {

116 uint16_t *tmp_cb = (uint16_t *)(dest_cb + i * uvlinesize);

117 uint16_t *tmp_cr = (uint16_t *)(dest_cr + i * uvlinesize);

118 for (j = 0; j < 8; j++) {

119 tmp_cb[j] = tmp_cr[j] = 1 << (bit_depth - 1);

120 }

121 }

122 } else {

123 for (i = 0; i < block_h; i++) {

124 uint16_t *tmp_cb = (uint16_t *)(dest_cb + i * uvlinesize);

125 for (j = 0; j < 8; j++)

126 tmp_cb[j] = get_bits(&gb, bit_depth);

127 }

128 for (i = 0; i < block_h; i++) {

129 uint16_t *tmp_cr = (uint16_t *)(dest_cr + i * uvlinesize);

130 for (j = 0; j < 8; j++)

131 tmp_cr[j] = get_bits(&gb, bit_depth);

132 }

133 }

134 }

135 } else {

136 for (i = 0; i < 16; i++)

137 memcpy(dest_y + i * linesize, h->intra_pcm_ptr + i * 16, 16);

138 if (SIMPLE || !CONFIG_GRAY || !(h->flags & CODEC_FLAG_GRAY)) {

139 if (!h->sps.chroma_format_idc) {

140 for (i = 0; i < 8; i++) {

141 memset(dest_cb + i*uvlinesize, 1 << (bit_depth - 1), 8);

142 memset(dest_cr + i*uvlinesize, 1 << (bit_depth - 1), 8);

143 }

144 } else {

145 const uint8_t *src_cb = h->intra_pcm_ptr + 256;

146 const uint8_t *src_cr = h->intra_pcm_ptr + 256 + block_h * 8;

147 for (i = 0; i < block_h; i++) {

148 memcpy(dest_cb + i * uvlinesize, src_cb + i * 8, 8);

149 memcpy(dest_cr + i * uvlinesize, src_cr + i * 8, 8);

150 }

151 }

152 }

153 }

154 } else {

155 if (IS_INTRA(mb_type)) {

156 if (h->deblocking_filter)

157 xchg_mb_border(h, dest_y, dest_cb, dest_cr, linesize,

158 uvlinesize, 1, 0, SIMPLE, PIXEL_SHIFT);

159

160 if (SIMPLE || !CONFIG_GRAY || !(h->flags & CODEC_FLAG_GRAY)) {

161 h->hpc.pred8x8[h->chroma_pred_mode](dest_cb, uvlinesize);

162 h->hpc.pred8x8[h->chroma_pred_mode](dest_cr, uvlinesize);

163 }

164

165 hl_decode_mb_predict_luma(h, mb_type, is_h264, SIMPLE,

166 transform_bypass, PIXEL_SHIFT,

167 block_offset, linesize, dest_y, 0);

168

169 if (h->deblocking_filter)

170 xchg_mb_border(h, dest_y, dest_cb, dest_cr, linesize,

171 uvlinesize, 0, 0, SIMPLE, PIXEL_SHIFT);

172 } else if (is_h264) {

173 if (chroma422) {

174 FUNC(hl_motion_422)(h, dest_y, dest_cb, dest_cr,

175 h->me.qpel_put, h->h264chroma.put_h264_chroma_pixels_tab,

176 h->me.qpel_avg, h->h264chroma.avg_h264_chroma_pixels_tab,

177 h->h264dsp.weight_h264_pixels_tab,

178 h->h264dsp.biweight_h264_pixels_tab);

179 } else {

180 FUNC(hl_motion_420)(h, dest_y, dest_cb, dest_cr,

181 h->me.qpel_put, h->h264chroma.put_h264_chroma_pixels_tab,

182 h->me.qpel_avg, h->h264chroma.avg_h264_chroma_pixels_tab,

183 h->h264dsp.weight_h264_pixels_tab,

184 h->h264dsp.biweight_h264_pixels_tab);

185 }

186 }

187

188 hl_decode_mb_idct_luma(h, mb_type, is_h264, SIMPLE, transform_bypass,

189 PIXEL_SHIFT, block_offset, linesize, dest_y, 0);

190

191 if ((SIMPLE || !CONFIG_GRAY || !(h->flags & CODEC_FLAG_GRAY)) &&

192 (h->cbp & 0x30)) {

193 uint8_t *dest[2] = { dest_cb, dest_cr };

194 if (transform_bypass) {

195 if (IS_INTRA(mb_type) && h->sps.profile_idc == 244 &&

196 (h->chroma_pred_mode == VERT_PRED8x8 ||

197 h->chroma_pred_mode == HOR_PRED8x8)) {

198 h->hpc.pred8x8_add[h->chroma_pred_mode](dest[0],

199 block_offset + 16,

200 h->mb + (16 * 16 * 1 << PIXEL_SHIFT),

201 uvlinesize);

202 h->hpc.pred8x8_add[h->chroma_pred_mode](dest[1],

203 block_offset + 32,

204 h->mb + (16 * 16 * 2 << PIXEL_SHIFT),

205 uvlinesize);

206 } else {

207 idct_add = h->h264dsp.h264_add_pixels4_clear;

208 for (j = 1; j < 3; j++) {

209 for (i = j * 16; i < j * 16 + 4; i++)

210 if (h->non_zero_count_cache[scan8[i]] ||

211 dctcoef_get(h->mb, PIXEL_SHIFT, i * 16))

212 idct_add(dest[j - 1] + block_offset[i],

213 h->mb + (i * 16 << PIXEL_SHIFT),

214 uvlinesize);

215 if (chroma422) {

216 for (i = j * 16 + 4; i < j * 16 + 8; i++)

217 if (h->non_zero_count_cache[scan8[i + 4]] ||

218 dctcoef_get(h->mb, PIXEL_SHIFT, i * 16))

219 idct_add(dest[j - 1] + block_offset[i + 4],

220 h->mb + (i * 16 << PIXEL_SHIFT),

221 uvlinesize);

222 }

223 }

224 }

225 } else {

226 if (is_h264) {

227 int qp[2];

228 if (chroma422) {

229 qp[0] = h->chroma_qp[0] + 3;

230 qp[1] = h->chroma_qp[1] + 3;

231 } else {

232 qp[0] = h->chroma_qp[0];

233 qp[1] = h->chroma_qp[1];

234 }

235 if (h->non_zero_count_cache[scan8[CHROMA_DC_BLOCK_INDEX + 0]])

236 h->h264dsp.h264_chroma_dc_dequant_idct(h->mb + (16 * 16 * 1 << PIXEL_SHIFT),

237 h->dequant4_coeff[IS_INTRA(mb_type) ? 1 : 4][qp[0]][0]);

238 if (h->non_zero_count_cache[scan8[CHROMA_DC_BLOCK_INDEX + 1]])

239 h->h264dsp.h264_chroma_dc_dequant_idct(h->mb + (16 * 16 * 2 << PIXEL_SHIFT),

240 h->dequant4_coeff[IS_INTRA(mb_type) ? 2 : 5][qp[1]][0]);

241 h->h264dsp.h264_idct_add8(dest, block_offset,

242 h->mb, uvlinesize,

243 h->non_zero_count_cache);

244 } else if (CONFIG_SVQ3_DECODER) {

245 h->h264dsp.h264_chroma_dc_dequant_idct(h->mb + 16 * 16 * 1,

246 h->dequant4_coeff[IS_INTRA(mb_type) ? 1 : 4][h->chroma_qp[0]][0]);

247 h->h264dsp.h264_chroma_dc_dequant_idct(h->mb + 16 * 16 * 2,

248 h->dequant4_coeff[IS_INTRA(mb_type) ? 2 : 5][h->chroma_qp[1]][0]);

249 for (j = 1; j < 3; j++) {

250 for (i = j * 16; i < j * 16 + 4; i++)

251 if (h->non_zero_count_cache[scan8[i]] || h->mb[i * 16]) {

252 uint8_t *const ptr = dest[j - 1] + block_offset[i];

253 ff_svq3_add_idct_c(ptr, h->mb + i * 16,

254 uvlinesize,

255 ff_h264_chroma_qp[0][h->qscale + 12] - 12, 2);

256 }

257 }

258 }

259 }

260 }

261 }

262 }

263

264 #if !SIMPLE || BITS == 8

265

266 #undef CHROMA_IDC

267 #define CHROMA_IDC 3

268 #include "h264_mc_template.c"

269

270 static av_noinline void FUNC(hl_decode_mb_444)(H264Context *h)

271 {

272 const int mb_x = h->mb_x;

273 const int mb_y = h->mb_y;

274 const int mb_xy = h->mb_xy;

275 const int mb_type = h->cur_pic.mb_type[mb_xy];

276 uint8_t *dest[3];

277 int linesize;

278 int i, j, p;

279 int *block_offset = &h->block_offset[0];

280 const int transform_bypass = !SIMPLE && (h->qscale == 0 && h->sps.transform_bypass);

281 const int plane_count = (SIMPLE || !CONFIG_GRAY || !(h->flags & CODEC_FLAG_GRAY)) ? 3 : 1;

282

283 for (p = 0; p < plane_count; p++) {

284 dest[p] = h->cur_pic.f.data[p] +

285 ((mb_x << PIXEL_SHIFT) + mb_y * h->linesize) * 16;

286 h->vdsp.prefetch(dest[p] + (h->mb_x & 3) * 4 * h->linesize + (64 << PIXEL_SHIFT),

287 h->linesize, 4);

288 }

289

290 h->list_counts[mb_xy] = h->list_count;

291

292 if (!SIMPLE && MB_FIELD(h)) {

293 linesize = h->mb_linesize = h->mb_uvlinesize = h->linesize * 2;

294 block_offset = &h->block_offset[48];

295 if (mb_y & 1) // FIXME move out of this function?

296 for (p = 0; p < 3; p++)

297 dest[p] -= h->linesize * 15;

298 if (FRAME_MBAFF(h)) {

299 int list;

300 for (list = 0; list < h->list_count; list++) {

301 if (!USES_LIST(mb_type, list))

302 continue;

303 if (IS_16X16(mb_type)) {

304 int8_t *ref = &h->ref_cache[list][scan8[0]];

305 fill_rectangle(ref, 4, 4, 8, (16 + *ref) ^ (h->mb_y & 1), 1);

306 } else {

307 for (i = 0; i < 16; i += 4) {

308 int ref = h->ref_cache[list][scan8[i]];

309 if (ref >= 0)

310 fill_rectangle(&h->ref_cache[list][scan8[i]], 2, 2,

311 8, (16 + ref) ^ (h->mb_y & 1), 1);

312 }

313 }

314 }

315 }

316 } else {

317 linesize = h->mb_linesize = h->mb_uvlinesize = h->linesize;

318 }

319

320 if (!SIMPLE && IS_INTRA_PCM(mb_type)) {

321 if (PIXEL_SHIFT) {

322 const int bit_depth = h->sps.bit_depth_luma;

323 GetBitContext gb;

324 init_get_bits(&gb, h->intra_pcm_ptr, 768 * bit_depth);

325

326 for (p = 0; p < plane_count; p++)

327 for (i = 0; i < 16; i++) {

328 uint16_t *tmp = (uint16_t *)(dest[p] + i * linesize);

329 for (j = 0; j < 16; j++)

330 tmp[j] = get_bits(&gb, bit_depth);

331 }

332 } else {

333 for (p = 0; p < plane_count; p++)

334 for (i = 0; i < 16; i++)

335 memcpy(dest[p] + i * linesize,

336 h->intra_pcm_ptr + p * 256 + i * 16, 16);

337 }

338 } else {

339 if (IS_INTRA(mb_type)) {

340 if (h->deblocking_filter)

341 xchg_mb_border(h, dest[0], dest[1], dest[2], linesize,

342 linesize, 1, 1, SIMPLE, PIXEL_SHIFT);

343

344 for (p = 0; p < plane_count; p++)

345 hl_decode_mb_predict_luma(h, mb_type, 1, SIMPLE,

346 transform_bypass, PIXEL_SHIFT,

347 block_offset, linesize, dest[p], p);

348

349 if (h->deblocking_filter)

350 xchg_mb_border(h, dest[0], dest[1], dest[2], linesize,

351 linesize, 0, 1, SIMPLE, PIXEL_SHIFT);

352 } else {

353 FUNC(hl_motion_444)(h, dest[0], dest[1], dest[2],

354 h->me.qpel_put, h->h264chroma.put_h264_chroma_pixels_tab,

355 h->me.qpel_avg, h->h264chroma.avg_h264_chroma_pixels_tab,

356 h->h264dsp.weight_h264_pixels_tab,

357 h->h264dsp.biweight_h264_pixels_tab);

358 }

359

360 for (p = 0; p < plane_count; p++)

361 hl_decode_mb_idct_luma(h, mb_type, 1, SIMPLE, transform_bypass,

362 PIXEL_SHIFT, block_offset, linesize,

363 dest[p], p);

364 }

365 }

366

367 #endif

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