~ubuntu-branches/ubuntu/saucy/gst-libav1.0/saucy-proposed : revision 19

gst-libs/ext/libav/libavcodec/asv1.c

* ASUS V1/V2 codec

* This file is part of Libav.

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

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

* License as published by the Free Software Foundation; either

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

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

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

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

* Lesser General Public License for more details.

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

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

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

/**

* @file

* ASUS V1/V2 codec.

#include "avcodec.h"

#include "libavutil/common.h"

#include "put_bits.h"

#include "dsputil.h"

#include "mpeg12data.h"

//#undef NDEBUG

//#include <assert.h>

#define VLC_BITS 6

#define ASV2_LEVEL_VLC_BITS 10

typedef struct ASV1Context{

AVCodecContext *avctx;

DSPContext dsp;

AVFrame picture;

PutBitContext pb;

GetBitContext gb;

ScanTable scantable;

int inv_qscale;

int mb_width;

int mb_height;

int mb_width2;

int mb_height2;

DECLARE_ALIGNED(16, DCTELEM, block)[6][64];

uint16_t intra_matrix[64];

int q_intra_matrix[64];

uint8_t *bitstream_buffer;

unsigned int bitstream_buffer_size;

} ASV1Context;

static const uint8_t scantab[64]={

0x00,0x08,0x01,0x09,0x10,0x18,0x11,0x19,

0x02,0x0A,0x03,0x0B,0x12,0x1A,0x13,0x1B,

0x04,0x0C,0x05,0x0D,0x20,0x28,0x21,0x29,

0x06,0x0E,0x07,0x0F,0x14,0x1C,0x15,0x1D,

0x22,0x2A,0x23,0x2B,0x30,0x38,0x31,0x39,

0x16,0x1E,0x17,0x1F,0x24,0x2C,0x25,0x2D,

0x32,0x3A,0x33,0x3B,0x26,0x2E,0x27,0x2F,

0x34,0x3C,0x35,0x3D,0x36,0x3E,0x37,0x3F,

};

static const uint8_t ccp_tab[17][2]={

{0x2,2}, {0x7,5}, {0xB,5}, {0x3,5},

{0xD,5}, {0x5,5}, {0x9,5}, {0x1,5},

{0xE,5}, {0x6,5}, {0xA,5}, {0x2,5},

{0xC,5}, {0x4,5}, {0x8,5}, {0x3,2},

{0xF,5}, //EOB

};

static const uint8_t level_tab[7][2]={

{3,4}, {3,3}, {3,2}, {0,3}, {2,2}, {2,3}, {2,4}

};

static const uint8_t dc_ccp_tab[8][2]={

{0x1,2}, {0xD,4}, {0xF,4}, {0xC,4},

{0x5,3}, {0xE,4}, {0x4,3}, {0x0,2},

};

static const uint8_t ac_ccp_tab[16][2]={

{0x00,2}, {0x3B,6}, {0x0A,4}, {0x3A,6},

{0x02,3}, {0x39,6}, {0x3C,6}, {0x38,6},

{0x03,3}, {0x3D,6}, {0x08,4}, {0x1F,5},

{0x09,4}, {0x0B,4}, {0x0D,4}, {0x0C,4},

};

static const uint8_t asv2_level_tab[63][2]={

{0x3F,10},{0x2F,10},{0x37,10},{0x27,10},{0x3B,10},{0x2B,10},{0x33,10},{0x23,10},

{0x3D,10},{0x2D,10},{0x35,10},{0x25,10},{0x39,10},{0x29,10},{0x31,10},{0x21,10},

{0x1F, 8},{0x17, 8},{0x1B, 8},{0x13, 8},{0x1D, 8},{0x15, 8},{0x19, 8},{0x11, 8},

{0x0F, 6},{0x0B, 6},{0x0D, 6},{0x09, 6},

{0x07, 4},{0x05, 4},

100

{0x03, 2},

101

{0x00, 5},

102

{0x02, 2},

103

{0x04, 4},{0x06, 4},

104

{0x08, 6},{0x0C, 6},{0x0A, 6},{0x0E, 6},

105

{0x10, 8},{0x18, 8},{0x14, 8},{0x1C, 8},{0x12, 8},{0x1A, 8},{0x16, 8},{0x1E, 8},

106

{0x20,10},{0x30,10},{0x28,10},{0x38,10},{0x24,10},{0x34,10},{0x2C,10},{0x3C,10},

107

{0x22,10},{0x32,10},{0x2A,10},{0x3A,10},{0x26,10},{0x36,10},{0x2E,10},{0x3E,10},

108

};

109

110

111

static VLC ccp_vlc;

112

static VLC level_vlc;

113

static VLC dc_ccp_vlc;

114

static VLC ac_ccp_vlc;

115

static VLC asv2_level_vlc;

116

117

static av_cold void init_vlcs(ASV1Context *a){

118

static int done = 0;

119

120

if (!done) {

121

done = 1;

122

123

INIT_VLC_STATIC(&ccp_vlc, VLC_BITS, 17,

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&ccp_tab[0][1], 2, 1,

125

&ccp_tab[0][0], 2, 1, 64);

126

INIT_VLC_STATIC(&dc_ccp_vlc, VLC_BITS, 8,

127

&dc_ccp_tab[0][1], 2, 1,

128

&dc_ccp_tab[0][0], 2, 1, 64);

129

INIT_VLC_STATIC(&ac_ccp_vlc, VLC_BITS, 16,

130

&ac_ccp_tab[0][1], 2, 1,

131

&ac_ccp_tab[0][0], 2, 1, 64);

132

INIT_VLC_STATIC(&level_vlc, VLC_BITS, 7,

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&level_tab[0][1], 2, 1,

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&level_tab[0][0], 2, 1, 64);

135

INIT_VLC_STATIC(&asv2_level_vlc, ASV2_LEVEL_VLC_BITS, 63,

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&asv2_level_tab[0][1], 2, 1,

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&asv2_level_tab[0][0], 2, 1, 1024);

138

}

139

}

140

141

//FIXME write a reversed bitstream reader to avoid the double reverse

142

static inline int asv2_get_bits(GetBitContext *gb, int n){

143

return av_reverse[ get_bits(gb, n) << (8-n) ];

144

}

145

146

static inline void asv2_put_bits(PutBitContext *pb, int n, int v){

147

put_bits(pb, n, av_reverse[ v << (8-n) ]);

148

}

149

150

static inline int asv1_get_level(GetBitContext *gb){

151

int code= get_vlc2(gb, level_vlc.table, VLC_BITS, 1);

152

153

if(code==3) return get_sbits(gb, 8);

154

else return code - 3;

155

}

156

157

static inline int asv2_get_level(GetBitContext *gb){

158

int code= get_vlc2(gb, asv2_level_vlc.table, ASV2_LEVEL_VLC_BITS, 1);

159

160

if(code==31) return (int8_t)asv2_get_bits(gb, 8);

161

else return code - 31;

162

}

163

164

static inline void asv1_put_level(PutBitContext *pb, int level){

165

unsigned int index= level + 3;

166

167

if(index <= 6) put_bits(pb, level_tab[index][1], level_tab[index][0]);

168

else{

169

put_bits(pb, level_tab[3][1], level_tab[3][0]);

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put_sbits(pb, 8, level);

171

}

172

}

173

174

static inline void asv2_put_level(PutBitContext *pb, int level){

175

unsigned int index= level + 31;

176

177

if(index <= 62) put_bits(pb, asv2_level_tab[index][1], asv2_level_tab[index][0]);

178

else{

179

put_bits(pb, asv2_level_tab[31][1], asv2_level_tab[31][0]);

180

asv2_put_bits(pb, 8, level&0xFF);

181

}

182

}

183

184

static inline int asv1_decode_block(ASV1Context *a, DCTELEM block[64]){

185

int i;

186

187

block[0]= 8*get_bits(&a->gb, 8);

188

189

for(i=0; i<11; i++){

190

const int ccp= get_vlc2(&a->gb, ccp_vlc.table, VLC_BITS, 1);

191

192

if(ccp){

193

if(ccp == 16) break;

194

if(ccp < 0 || i>=10){

195

av_log(a->avctx, AV_LOG_ERROR, "coded coeff pattern damaged\n");

196

return -1;

197

}

198

199

if(ccp&8) block[a->scantable.permutated[4*i+0]]= (asv1_get_level(&a->gb) * a->intra_matrix[4*i+0])>>4;

200

if(ccp&4) block[a->scantable.permutated[4*i+1]]= (asv1_get_level(&a->gb) * a->intra_matrix[4*i+1])>>4;

201

if(ccp&2) block[a->scantable.permutated[4*i+2]]= (asv1_get_level(&a->gb) * a->intra_matrix[4*i+2])>>4;

202

if(ccp&1) block[a->scantable.permutated[4*i+3]]= (asv1_get_level(&a->gb) * a->intra_matrix[4*i+3])>>4;

203

}

204

}

205

206

return 0;

207

}

208

209

static inline int asv2_decode_block(ASV1Context *a, DCTELEM block[64]){

210

int i, count, ccp;

211

212

count= asv2_get_bits(&a->gb, 4);

213

214

block[0]= 8*asv2_get_bits(&a->gb, 8);

215

216

ccp= get_vlc2(&a->gb, dc_ccp_vlc.table, VLC_BITS, 1);

217

if(ccp){

218

if(ccp&4) block[a->scantable.permutated[1]]= (asv2_get_level(&a->gb) * a->intra_matrix[1])>>4;

219

if(ccp&2) block[a->scantable.permutated[2]]= (asv2_get_level(&a->gb) * a->intra_matrix[2])>>4;

220

if(ccp&1) block[a->scantable.permutated[3]]= (asv2_get_level(&a->gb) * a->intra_matrix[3])>>4;

221

}

222

223

for(i=1; i<count+1; i++){

224

const int ccp= get_vlc2(&a->gb, ac_ccp_vlc.table, VLC_BITS, 1);

225

226

if(ccp){

227

if(ccp&8) block[a->scantable.permutated[4*i+0]]= (asv2_get_level(&a->gb) * a->intra_matrix[4*i+0])>>4;

228

if(ccp&4) block[a->scantable.permutated[4*i+1]]= (asv2_get_level(&a->gb) * a->intra_matrix[4*i+1])>>4;

229

if(ccp&2) block[a->scantable.permutated[4*i+2]]= (asv2_get_level(&a->gb) * a->intra_matrix[4*i+2])>>4;

230

if(ccp&1) block[a->scantable.permutated[4*i+3]]= (asv2_get_level(&a->gb) * a->intra_matrix[4*i+3])>>4;

231

}

232

}

233

234

return 0;

235

}

236

237

static inline void asv1_encode_block(ASV1Context *a, DCTELEM block[64]){

238

int i;

239

int nc_count=0;

240

241

put_bits(&a->pb, 8, (block[0] + 32)>>6);

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block[0]= 0;

243

244

for(i=0; i<10; i++){

245

const int index= scantab[4*i];

246

int ccp=0;

247

248

if( (block[index + 0] = (block[index + 0]*a->q_intra_matrix[index + 0] + (1<<15))>>16) ) ccp |= 8;

249

if( (block[index + 8] = (block[index + 8]*a->q_intra_matrix[index + 8] + (1<<15))>>16) ) ccp |= 4;

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if( (block[index + 1] = (block[index + 1]*a->q_intra_matrix[index + 1] + (1<<15))>>16) ) ccp |= 2;

251

if( (block[index + 9] = (block[index + 9]*a->q_intra_matrix[index + 9] + (1<<15))>>16) ) ccp |= 1;

252

253

if(ccp){

254

for(;nc_count; nc_count--)

255

put_bits(&a->pb, ccp_tab[0][1], ccp_tab[0][0]);

256

257

put_bits(&a->pb, ccp_tab[ccp][1], ccp_tab[ccp][0]);

258

259

if(ccp&8) asv1_put_level(&a->pb, block[index + 0]);

260

if(ccp&4) asv1_put_level(&a->pb, block[index + 8]);

261

if(ccp&2) asv1_put_level(&a->pb, block[index + 1]);

262

if(ccp&1) asv1_put_level(&a->pb, block[index + 9]);

263

}else{

264

nc_count++;

265

}

266

}

267

put_bits(&a->pb, ccp_tab[16][1], ccp_tab[16][0]);

268

}

269

270

static inline void asv2_encode_block(ASV1Context *a, DCTELEM block[64]){

271

int i;

272

int count=0;

273

274

for(count=63; count>3; count--){

275

const int index= scantab[count];

276

277

if( (block[index]*a->q_intra_matrix[index] + (1<<15))>>16 )

278

break;

279

}

280

281

count >>= 2;

282

283

asv2_put_bits(&a->pb, 4, count);

284

asv2_put_bits(&a->pb, 8, (block[0] + 32)>>6);

285

block[0]= 0;

286

287

for(i=0; i<=count; i++){

288

const int index= scantab[4*i];

289

int ccp=0;

290

291

if( (block[index + 0] = (block[index + 0]*a->q_intra_matrix[index + 0] + (1<<15))>>16) ) ccp |= 8;

292

if( (block[index + 8] = (block[index + 8]*a->q_intra_matrix[index + 8] + (1<<15))>>16) ) ccp |= 4;

293

if( (block[index + 1] = (block[index + 1]*a->q_intra_matrix[index + 1] + (1<<15))>>16) ) ccp |= 2;

294

if( (block[index + 9] = (block[index + 9]*a->q_intra_matrix[index + 9] + (1<<15))>>16) ) ccp |= 1;

295

296

assert(i || ccp<8);

297

if(i) put_bits(&a->pb, ac_ccp_tab[ccp][1], ac_ccp_tab[ccp][0]);

298

else put_bits(&a->pb, dc_ccp_tab[ccp][1], dc_ccp_tab[ccp][0]);

299

300

if(ccp){

301

if(ccp&8) asv2_put_level(&a->pb, block[index + 0]);

302

if(ccp&4) asv2_put_level(&a->pb, block[index + 8]);

303

if(ccp&2) asv2_put_level(&a->pb, block[index + 1]);

304

if(ccp&1) asv2_put_level(&a->pb, block[index + 9]);

305

}

306

}

307

}

308

309

static inline int decode_mb(ASV1Context *a, DCTELEM block[6][64]){

310

int i;

311

312

a->dsp.clear_blocks(block[0]);

313

314

if(a->avctx->codec_id == CODEC_ID_ASV1){

315

for(i=0; i<6; i++){

316

if( asv1_decode_block(a, block[i]) < 0)

317

return -1;

318

}

319

}else{

320

for(i=0; i<6; i++){

321

if( asv2_decode_block(a, block[i]) < 0)

322

return -1;

323

}

324

}

325

return 0;

326

}

327

328

static inline int encode_mb(ASV1Context *a, DCTELEM block[6][64]){

329

int i;

330

331

if(a->pb.buf_end - a->pb.buf - (put_bits_count(&a->pb)>>3) < 30*16*16*3/2/8){

332

av_log(a->avctx, AV_LOG_ERROR, "encoded frame too large\n");

333

return -1;

334

}

335

336

if(a->avctx->codec_id == CODEC_ID_ASV1){

337

for(i=0; i<6; i++)

338

asv1_encode_block(a, block[i]);

339

}else{

340

for(i=0; i<6; i++)

341

asv2_encode_block(a, block[i]);

342

}

343

return 0;

344

}

345

346

static inline void idct_put(ASV1Context *a, int mb_x, int mb_y){

347

DCTELEM (*block)[64]= a->block;

348

int linesize= a->picture.linesize[0];

349

350

uint8_t *dest_y = a->picture.data[0] + (mb_y * 16* linesize ) + mb_x * 16;

351

uint8_t *dest_cb = a->picture.data[1] + (mb_y * 8 * a->picture.linesize[1]) + mb_x * 8;

352

uint8_t *dest_cr = a->picture.data[2] + (mb_y * 8 * a->picture.linesize[2]) + mb_x * 8;

353

354

a->dsp.idct_put(dest_y , linesize, block[0]);

355

a->dsp.idct_put(dest_y + 8, linesize, block[1]);

356

a->dsp.idct_put(dest_y + 8*linesize , linesize, block[2]);

357

a->dsp.idct_put(dest_y + 8*linesize + 8, linesize, block[3]);

358

359

if(!(a->avctx->flags&CODEC_FLAG_GRAY)){

360

a->dsp.idct_put(dest_cb, a->picture.linesize[1], block[4]);

361

a->dsp.idct_put(dest_cr, a->picture.linesize[2], block[5]);

362

}

363

}

364

365

static inline void dct_get(ASV1Context *a, int mb_x, int mb_y){

366

DCTELEM (*block)[64]= a->block;

367

int linesize= a->picture.linesize[0];

368

int i;

369

370

uint8_t *ptr_y = a->picture.data[0] + (mb_y * 16* linesize ) + mb_x * 16;

371

uint8_t *ptr_cb = a->picture.data[1] + (mb_y * 8 * a->picture.linesize[1]) + mb_x * 8;

372

uint8_t *ptr_cr = a->picture.data[2] + (mb_y * 8 * a->picture.linesize[2]) + mb_x * 8;

373

374

a->dsp.get_pixels(block[0], ptr_y , linesize);

375

a->dsp.get_pixels(block[1], ptr_y + 8, linesize);

376

a->dsp.get_pixels(block[2], ptr_y + 8*linesize , linesize);

377

a->dsp.get_pixels(block[3], ptr_y + 8*linesize + 8, linesize);

378

for(i=0; i<4; i++)

379

a->dsp.fdct(block[i]);

380

381

if(!(a->avctx->flags&CODEC_FLAG_GRAY)){

382

a->dsp.get_pixels(block[4], ptr_cb, a->picture.linesize[1]);

383

a->dsp.get_pixels(block[5], ptr_cr, a->picture.linesize[2]);

384

for(i=4; i<6; i++)

385

a->dsp.fdct(block[i]);

386

}

387

}

388

389

static int decode_frame(AVCodecContext *avctx,

390

void *data, int *data_size,

391

AVPacket *avpkt)

392

{

393

const uint8_t *buf = avpkt->data;

394

int buf_size = avpkt->size;

395

ASV1Context * const a = avctx->priv_data;

396

AVFrame *picture = data;

397

AVFrame * const p= &a->picture;

398

int mb_x, mb_y;

399

400

if(p->data[0])

401

avctx->release_buffer(avctx, p);

402

403

p->reference= 0;

404

if(avctx->get_buffer(avctx, p) < 0){

405

av_log(avctx, AV_LOG_ERROR, "get_buffer() failed\n");

406

return -1;

407

}

408

p->pict_type= AV_PICTURE_TYPE_I;

409

p->key_frame= 1;

410

411

av_fast_malloc(&a->bitstream_buffer, &a->bitstream_buffer_size, buf_size + FF_INPUT_BUFFER_PADDING_SIZE);

412

if (!a->bitstream_buffer)

413

return AVERROR(ENOMEM);

414

415

if(avctx->codec_id == CODEC_ID_ASV1)

416

a->dsp.bswap_buf((uint32_t*)a->bitstream_buffer, (const uint32_t*)buf, buf_size/4);

417

else{

418

int i;

419

for(i=0; i<buf_size; i++)

420

a->bitstream_buffer[i]= av_reverse[ buf[i] ];

421

}

422

423

init_get_bits(&a->gb, a->bitstream_buffer, buf_size*8);

424

425

for(mb_y=0; mb_y<a->mb_height2; mb_y++){

426

for(mb_x=0; mb_x<a->mb_width2; mb_x++){

427

if( decode_mb(a, a->block) <0)

428

return -1;

429

430

idct_put(a, mb_x, mb_y);

431

}

432

}

433

434

if(a->mb_width2 != a->mb_width){

435

mb_x= a->mb_width2;

436

for(mb_y=0; mb_y<a->mb_height2; mb_y++){

437

if( decode_mb(a, a->block) <0)

438

return -1;

439

440

idct_put(a, mb_x, mb_y);

441

}

442

}

443

444

if(a->mb_height2 != a->mb_height){

445

mb_y= a->mb_height2;

446

for(mb_x=0; mb_x<a->mb_width; mb_x++){

447

if( decode_mb(a, a->block) <0)

448

return -1;

449

450

idct_put(a, mb_x, mb_y);

451

}

452

}

453

454

*picture= *(AVFrame*)&a->picture;

455

*data_size = sizeof(AVPicture);

456

457

emms_c();

458

459

return (get_bits_count(&a->gb)+31)/32*4;

460

}

461

462

#if CONFIG_ASV1_ENCODER || CONFIG_ASV2_ENCODER

463

static int encode_frame(AVCodecContext *avctx, unsigned char *buf, int buf_size, void *data){

464

ASV1Context * const a = avctx->priv_data;

465

AVFrame *pict = data;

466

AVFrame * const p= &a->picture;

467

int size;

468

int mb_x, mb_y;

469

470

init_put_bits(&a->pb, buf, buf_size);

471

472

*p = *pict;

473

p->pict_type= AV_PICTURE_TYPE_I;

474

p->key_frame= 1;

475

476

for(mb_y=0; mb_y<a->mb_height2; mb_y++){

477

for(mb_x=0; mb_x<a->mb_width2; mb_x++){

478

dct_get(a, mb_x, mb_y);

479

encode_mb(a, a->block);

480

}

481

}

482

483

if(a->mb_width2 != a->mb_width){

484

mb_x= a->mb_width2;

485

for(mb_y=0; mb_y<a->mb_height2; mb_y++){

486

dct_get(a, mb_x, mb_y);

487

encode_mb(a, a->block);

488

}

489

}

490

491

if(a->mb_height2 != a->mb_height){

492

mb_y= a->mb_height2;

493

for(mb_x=0; mb_x<a->mb_width; mb_x++){

494

dct_get(a, mb_x, mb_y);

495

encode_mb(a, a->block);

496

}

497

}

498

emms_c();

499

500

avpriv_align_put_bits(&a->pb);

501

while(put_bits_count(&a->pb)&31)

502

put_bits(&a->pb, 8, 0);

503

504

size= put_bits_count(&a->pb)/32;

505

506

if(avctx->codec_id == CODEC_ID_ASV1)

507

a->dsp.bswap_buf((uint32_t*)buf, (uint32_t*)buf, size);

508

else{

509

int i;

510

for(i=0; i<4*size; i++)

511

buf[i]= av_reverse[ buf[i] ];

512

}

513

514

return size*4;

515

}

516

#endif /* CONFIG_ASV1_ENCODER || CONFIG_ASV2_ENCODER */

517

518

static av_cold void common_init(AVCodecContext *avctx){

519

ASV1Context * const a = avctx->priv_data;

520

521

dsputil_init(&a->dsp, avctx);

522

523

a->mb_width = (avctx->width + 15) / 16;

524

a->mb_height = (avctx->height + 15) / 16;

525

a->mb_width2 = (avctx->width + 0) / 16;

526

a->mb_height2 = (avctx->height + 0) / 16;

527

528

avctx->coded_frame= &a->picture;

529

a->avctx= avctx;

530

}

531

532

static av_cold int decode_init(AVCodecContext *avctx){

533

ASV1Context * const a = avctx->priv_data;

534

AVFrame *p= &a->picture;

535

int i;

536

const int scale= avctx->codec_id == CODEC_ID_ASV1 ? 1 : 2;

537

538

common_init(avctx);

539

init_vlcs(a);

540

ff_init_scantable(a->dsp.idct_permutation, &a->scantable, scantab);

541

avctx->pix_fmt= PIX_FMT_YUV420P;

542

543

a->inv_qscale= avctx->extradata[0];

544

if(a->inv_qscale == 0){

545

av_log(avctx, AV_LOG_ERROR, "illegal qscale 0\n");

546

if(avctx->codec_id == CODEC_ID_ASV1)

547

a->inv_qscale= 6;

548

else

549

a->inv_qscale= 10;

550

}

551

552

for(i=0; i<64; i++){

553

int index= scantab[i];

554

555

a->intra_matrix[i]= 64*scale*ff_mpeg1_default_intra_matrix[index] / a->inv_qscale;

556

}

557

558

p->qstride= a->mb_width;

559

p->qscale_table= av_malloc( p->qstride * a->mb_height);

560

p->quality= (32*scale + a->inv_qscale/2)/a->inv_qscale;

561

memset(p->qscale_table, p->quality, p->qstride*a->mb_height);

562

563

return 0;

564

}

565

566

#if CONFIG_ASV1_ENCODER || CONFIG_ASV2_ENCODER

567

static av_cold int encode_init(AVCodecContext *avctx){

568

ASV1Context * const a = avctx->priv_data;

569

int i;

570

const int scale= avctx->codec_id == CODEC_ID_ASV1 ? 1 : 2;

571

572

common_init(avctx);

573

574

if(avctx->global_quality == 0) avctx->global_quality= 4*FF_QUALITY_SCALE;

575

576

a->inv_qscale= (32*scale*FF_QUALITY_SCALE + avctx->global_quality/2) / avctx->global_quality;

577

578

avctx->extradata= av_mallocz(8);

579

avctx->extradata_size=8;

580

((uint32_t*)avctx->extradata)[0]= av_le2ne32(a->inv_qscale);

581

((uint32_t*)avctx->extradata)[1]= av_le2ne32(AV_RL32("ASUS"));

582

583

for(i=0; i<64; i++){

584

int q= 32*scale*ff_mpeg1_default_intra_matrix[i];

585

a->q_intra_matrix[i]= ((a->inv_qscale<<16) + q/2) / q;

586

}

587

588

return 0;

589

}

590

#endif /* CONFIG_ASV1_ENCODER || CONFIG_ASV2_ENCODER */

591

592

static av_cold int decode_end(AVCodecContext *avctx){

593

ASV1Context * const a = avctx->priv_data;

594

595

av_freep(&a->bitstream_buffer);

596

av_freep(&a->picture.qscale_table);

597

a->bitstream_buffer_size=0;

598

599

if(a->picture.data[0])

600

avctx->release_buffer(avctx, &a->picture);

601

602

return 0;

603

}

604

605

AVCodec ff_asv1_decoder = {

606

.name = "asv1",

607

.type = AVMEDIA_TYPE_VIDEO,

608

.id = CODEC_ID_ASV1,

609

.priv_data_size = sizeof(ASV1Context),

610

.init = decode_init,

611

.close = decode_end,

612

.decode = decode_frame,

613

.capabilities = CODEC_CAP_DR1,

614

.long_name= NULL_IF_CONFIG_SMALL("ASUS V1"),

615

};

616

617

AVCodec ff_asv2_decoder = {

618

.name = "asv2",

619

.type = AVMEDIA_TYPE_VIDEO,

620

.id = CODEC_ID_ASV2,

621

.priv_data_size = sizeof(ASV1Context),

622

.init = decode_init,

623

.close = decode_end,

624

.decode = decode_frame,

625

.capabilities = CODEC_CAP_DR1,

626

.long_name= NULL_IF_CONFIG_SMALL("ASUS V2"),

627

};

628

629

#if CONFIG_ASV1_ENCODER

630

AVCodec ff_asv1_encoder = {

631

.name = "asv1",

632

.type = AVMEDIA_TYPE_VIDEO,

633

.id = CODEC_ID_ASV1,

634

.priv_data_size = sizeof(ASV1Context),

635

.init = encode_init,

636

.encode = encode_frame,

637

//encode_end,

638

.pix_fmts= (const enum PixelFormat[]){PIX_FMT_YUV420P, PIX_FMT_NONE},

639

.long_name= NULL_IF_CONFIG_SMALL("ASUS V1"),

640

};

641

#endif

642

643

#if CONFIG_ASV2_ENCODER

644

AVCodec ff_asv2_encoder = {

645

.name = "asv2",

646

.type = AVMEDIA_TYPE_VIDEO,

647

.id = CODEC_ID_ASV2,

648

.priv_data_size = sizeof(ASV1Context),

649

.init = encode_init,

650

.encode = encode_frame,

651

//encode_end,

652

.pix_fmts= (const enum PixelFormat[]){PIX_FMT_YUV420P, PIX_FMT_NONE},

653

.long_name= NULL_IF_CONFIG_SMALL("ASUS V2"),

654

};

655

#endif

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