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00022 #include <stdio.h>
00023 #include <stdlib.h>
00024 #include <string.h>
00025 #include <math.h>
00026 #include <stdint.h>
00027 #include <float.h>
00028 #include <xavs.h>
00029 #include "avcodec.h"
00030 #include "internal.h"
00031 #include "libavutil/opt.h"
00032
00033 #define END_OF_STREAM 0x001
00034
00035 #define XAVS_PART_I8X8 0x002
00036 #define XAVS_PART_P8X8 0x010
00037 #define XAVS_PART_B8X8 0x100
00038
00039 typedef struct XavsContext {
00040 xavs_param_t params;
00041 xavs_t *enc;
00042 xavs_picture_t pic;
00043 uint8_t *sei;
00044 int sei_size;
00045 AVFrame out_pic;
00046 int end_of_stream;
00047 float crf;
00048 int cqp;
00049 int b_bias;
00050 float cplxblur;
00051 int direct_pred;
00052 int aud;
00053 int fast_pskip;
00054 int mbtree;
00055 int mixed_refs;
00056 } XavsContext;
00057
00058 static void XAVS_log(void *p, int level, const char *fmt, va_list args)
00059 {
00060 static const int level_map[] = {
00061 [XAVS_LOG_ERROR] = AV_LOG_ERROR,
00062 [XAVS_LOG_WARNING] = AV_LOG_WARNING,
00063 [XAVS_LOG_INFO] = AV_LOG_INFO,
00064 [XAVS_LOG_DEBUG] = AV_LOG_DEBUG
00065 };
00066
00067 if (level < 0 || level > XAVS_LOG_DEBUG)
00068 return;
00069
00070 av_vlog(p, level_map[level], fmt, args);
00071 }
00072
00073 static int encode_nals(AVCodecContext *ctx, uint8_t *buf,
00074 int size, xavs_nal_t *nals,
00075 int nnal, int skip_sei)
00076 {
00077 XavsContext *x4 = ctx->priv_data;
00078 uint8_t *p = buf;
00079 int i, s;
00080
00081
00082 if (x4->sei_size > 0 && nnal > 0) {
00083 memcpy(p, x4->sei, x4->sei_size);
00084 p += x4->sei_size;
00085 x4->sei_size = 0;
00086 }
00087
00088 for (i = 0; i < nnal; i++) {
00089
00090 if (skip_sei && nals[i].i_type == NAL_SEI) {
00091 x4->sei = av_malloc( 5 + nals[i].i_payload * 4 / 3 );
00092 if (xavs_nal_encode(x4->sei, &x4->sei_size, 1, nals + i) < 0)
00093 return -1;
00094
00095 continue;
00096 }
00097 s = xavs_nal_encode(p, &size, 1, nals + i);
00098 if (s < 0)
00099 return -1;
00100 p += s;
00101 }
00102
00103 return p - buf;
00104 }
00105
00106 static int XAVS_frame(AVCodecContext *ctx, uint8_t *buf,
00107 int bufsize, void *data)
00108 {
00109 XavsContext *x4 = ctx->priv_data;
00110 AVFrame *frame = data;
00111 xavs_nal_t *nal;
00112 int nnal, i;
00113 xavs_picture_t pic_out;
00114
00115 x4->pic.img.i_csp = XAVS_CSP_I420;
00116 x4->pic.img.i_plane = 3;
00117
00118 if (frame) {
00119 for (i = 0; i < 3; i++) {
00120 x4->pic.img.plane[i] = frame->data[i];
00121 x4->pic.img.i_stride[i] = frame->linesize[i];
00122 }
00123
00124 x4->pic.i_pts = frame->pts;
00125 x4->pic.i_type = XAVS_TYPE_AUTO;
00126 }
00127
00128 if (xavs_encoder_encode(x4->enc, &nal, &nnal,
00129 frame? &x4->pic: NULL, &pic_out) < 0)
00130 return -1;
00131
00132 bufsize = encode_nals(ctx, buf, bufsize, nal, nnal, 0);
00133
00134 if (bufsize < 0)
00135 return -1;
00136
00137 if (!bufsize && !frame && !(x4->end_of_stream)){
00138 buf[bufsize] = 0x0;
00139 buf[bufsize+1] = 0x0;
00140 buf[bufsize+2] = 0x01;
00141 buf[bufsize+3] = 0xb1;
00142 bufsize += 4;
00143 x4->end_of_stream = END_OF_STREAM;
00144 return bufsize;
00145 }
00146
00147
00148 x4->out_pic.pts = pic_out.i_pts;
00149
00150 switch (pic_out.i_type) {
00151 case XAVS_TYPE_IDR:
00152 case XAVS_TYPE_I:
00153 x4->out_pic.pict_type = AV_PICTURE_TYPE_I;
00154 break;
00155 case XAVS_TYPE_P:
00156 x4->out_pic.pict_type = AV_PICTURE_TYPE_P;
00157 break;
00158 case XAVS_TYPE_B:
00159 case XAVS_TYPE_BREF:
00160 x4->out_pic.pict_type = AV_PICTURE_TYPE_B;
00161 break;
00162 }
00163
00164
00165
00166 x4->out_pic.key_frame = pic_out.i_type == XAVS_TYPE_I;
00167
00168 x4->out_pic.quality = (pic_out.i_qpplus1 - 1) * FF_QP2LAMBDA;
00169
00170 return bufsize;
00171 }
00172
00173 static av_cold int XAVS_close(AVCodecContext *avctx)
00174 {
00175 XavsContext *x4 = avctx->priv_data;
00176
00177 av_freep(&avctx->extradata);
00178 av_free(x4->sei);
00179
00180 if (x4->enc)
00181 xavs_encoder_close(x4->enc);
00182
00183 return 0;
00184 }
00185
00186 static av_cold int XAVS_init(AVCodecContext *avctx)
00187 {
00188 XavsContext *x4 = avctx->priv_data;
00189
00190 x4->sei_size = 0;
00191 xavs_param_default(&x4->params);
00192
00193 x4->params.pf_log = XAVS_log;
00194 x4->params.p_log_private = avctx;
00195 x4->params.i_keyint_max = avctx->gop_size;
00196 if (avctx->bit_rate) {
00197 x4->params.rc.i_bitrate = avctx->bit_rate / 1000;
00198 x4->params.rc.i_rc_method = XAVS_RC_ABR;
00199 }
00200 x4->params.rc.i_vbv_buffer_size = avctx->rc_buffer_size / 1000;
00201 x4->params.rc.i_vbv_max_bitrate = avctx->rc_max_rate / 1000;
00202 x4->params.rc.b_stat_write = avctx->flags & CODEC_FLAG_PASS1;
00203 if (avctx->flags & CODEC_FLAG_PASS2) {
00204 x4->params.rc.b_stat_read = 1;
00205 } else {
00206 #if FF_API_X264_GLOBAL_OPTS
00207 if (avctx->crf) {
00208 x4->params.rc.i_rc_method = XAVS_RC_CRF;
00209 x4->params.rc.f_rf_constant = avctx->crf;
00210 } else if (avctx->cqp > -1) {
00211 x4->params.rc.i_rc_method = XAVS_RC_CQP;
00212 x4->params.rc.i_qp_constant = avctx->cqp;
00213 }
00214 #endif
00215
00216 if (x4->crf >= 0) {
00217 x4->params.rc.i_rc_method = XAVS_RC_CRF;
00218 x4->params.rc.f_rf_constant = x4->crf;
00219 } else if (x4->cqp >= 0) {
00220 x4->params.rc.i_rc_method = XAVS_RC_CQP;
00221 x4->params.rc.i_qp_constant = x4->cqp;
00222 }
00223 }
00224
00225 #if FF_API_X264_GLOBAL_OPTS
00226 if (avctx->bframebias)
00227 x4->params.i_bframe_bias = avctx->bframebias;
00228 if (avctx->deblockalpha)
00229 x4->params.i_deblocking_filter_alphac0 = avctx->deblockalpha;
00230 if (avctx->deblockbeta)
00231 x4->params.i_deblocking_filter_beta = avctx->deblockbeta;
00232 if (avctx->complexityblur >= 0)
00233 x4->params.rc.f_complexity_blur = avctx->complexityblur;
00234 if (avctx->directpred >= 0)
00235 x4->params.analyse.i_direct_mv_pred = avctx->directpred;
00236 if (avctx->partitions) {
00237 if (avctx->partitions & XAVS_PART_I8X8)
00238 x4->params.analyse.inter |= XAVS_ANALYSE_I8x8;
00239 if (avctx->partitions & XAVS_PART_P8X8)
00240 x4->params.analyse.inter |= XAVS_ANALYSE_PSUB16x16;
00241 if (avctx->partitions & XAVS_PART_B8X8)
00242 x4->params.analyse.inter |= XAVS_ANALYSE_BSUB16x16;
00243 }
00244 x4->params.rc.b_mb_tree = !!(avctx->flags2 & CODEC_FLAG2_MBTREE);
00245 x4->params.b_aud = avctx->flags2 & CODEC_FLAG2_AUD;
00246 x4->params.analyse.b_mixed_references = avctx->flags2 & CODEC_FLAG2_MIXED_REFS;
00247 x4->params.analyse.b_fast_pskip = avctx->flags2 & CODEC_FLAG2_FASTPSKIP;
00248 x4->params.analyse.b_weighted_bipred = avctx->flags2 & CODEC_FLAG2_WPRED;
00249 #endif
00250
00251 if (x4->aud >= 0)
00252 x4->params.b_aud = x4->aud;
00253 if (x4->mbtree >= 0)
00254 x4->params.rc.b_mb_tree = x4->mbtree;
00255 if (x4->direct_pred >= 0)
00256 x4->params.analyse.i_direct_mv_pred = x4->direct_pred;
00257 if (x4->fast_pskip >= 0)
00258 x4->params.analyse.b_fast_pskip = x4->fast_pskip;
00259 if (x4->mixed_refs >= 0)
00260 x4->params.analyse.b_mixed_references = x4->mixed_refs;
00261 if (x4->b_bias != INT_MIN)
00262 x4->params.i_bframe_bias = x4->b_bias;
00263 if (x4->cplxblur >= 0)
00264 x4->params.rc.f_complexity_blur = x4->cplxblur;
00265
00266 x4->params.i_bframe = avctx->max_b_frames;
00267
00268 x4->params.b_cabac = 0;
00269
00270 x4->params.i_bframe_adaptive = avctx->b_frame_strategy;
00271
00272 avctx->has_b_frames = !!avctx->max_b_frames;
00273
00274
00275
00276 x4->params.i_keyint_min = avctx->keyint_min;
00277 if (x4->params.i_keyint_min > x4->params.i_keyint_max)
00278 x4->params.i_keyint_min = x4->params.i_keyint_max;
00279
00280 x4->params.i_scenecut_threshold = avctx->scenechange_threshold;
00281
00282
00283
00284 x4->params.rc.i_qp_min = avctx->qmin;
00285 x4->params.rc.i_qp_max = avctx->qmax;
00286 x4->params.rc.i_qp_step = avctx->max_qdiff;
00287
00288 x4->params.rc.f_qcompress = avctx->qcompress;
00289 x4->params.rc.f_qblur = avctx->qblur;
00290
00291 x4->params.i_frame_reference = avctx->refs;
00292
00293 x4->params.i_width = avctx->width;
00294 x4->params.i_height = avctx->height;
00295 x4->params.vui.i_sar_width = avctx->sample_aspect_ratio.num;
00296 x4->params.vui.i_sar_height = avctx->sample_aspect_ratio.den;
00297
00298 x4->params.i_fps_num = avctx->time_base.den;
00299 x4->params.i_fps_den = avctx->time_base.num;
00300 x4->params.analyse.inter = XAVS_ANALYSE_I8x8 |XAVS_ANALYSE_PSUB16x16| XAVS_ANALYSE_BSUB16x16;
00301
00302 switch (avctx->me_method) {
00303 case ME_EPZS:
00304 x4->params.analyse.i_me_method = XAVS_ME_DIA;
00305 break;
00306 case ME_HEX:
00307 x4->params.analyse.i_me_method = XAVS_ME_HEX;
00308 break;
00309 case ME_UMH:
00310 x4->params.analyse.i_me_method = XAVS_ME_UMH;
00311 break;
00312 case ME_FULL:
00313 x4->params.analyse.i_me_method = XAVS_ME_ESA;
00314 break;
00315 case ME_TESA:
00316 x4->params.analyse.i_me_method = XAVS_ME_TESA;
00317 break;
00318 default:
00319 x4->params.analyse.i_me_method = XAVS_ME_HEX;
00320 }
00321
00322 x4->params.analyse.i_me_range = avctx->me_range;
00323 x4->params.analyse.i_subpel_refine = avctx->me_subpel_quality;
00324
00325 x4->params.analyse.b_chroma_me = avctx->me_cmp & FF_CMP_CHROMA;
00326
00327 x4->params.analyse.b_transform_8x8 = 1;
00328
00329 x4->params.analyse.i_trellis = avctx->trellis;
00330 x4->params.analyse.i_noise_reduction = avctx->noise_reduction;
00331
00332 if (avctx->level > 0)
00333 x4->params.i_level_idc = avctx->level;
00334
00335 x4->params.rc.f_rate_tolerance =
00336 (float)avctx->bit_rate_tolerance/avctx->bit_rate;
00337
00338 if ((avctx->rc_buffer_size) &&
00339 (avctx->rc_initial_buffer_occupancy <= avctx->rc_buffer_size)) {
00340 x4->params.rc.f_vbv_buffer_init =
00341 (float)avctx->rc_initial_buffer_occupancy / avctx->rc_buffer_size;
00342 } else
00343 x4->params.rc.f_vbv_buffer_init = 0.9;
00344
00345
00346
00347 x4->params.rc.f_ip_factor = 1 / fabs(avctx->i_quant_factor);
00348 x4->params.rc.f_pb_factor = avctx->b_quant_factor;
00349 x4->params.analyse.i_chroma_qp_offset = avctx->chromaoffset;
00350
00351 x4->params.analyse.b_psnr = avctx->flags & CODEC_FLAG_PSNR;
00352 x4->params.i_log_level = XAVS_LOG_DEBUG;
00353 x4->params.i_threads = avctx->thread_count;
00354 x4->params.b_interlaced = avctx->flags & CODEC_FLAG_INTERLACED_DCT;
00355
00356 if (avctx->flags & CODEC_FLAG_GLOBAL_HEADER)
00357 x4->params.b_repeat_headers = 0;
00358
00359 x4->enc = xavs_encoder_open(&x4->params);
00360 if (!x4->enc)
00361 return -1;
00362
00363 avctx->coded_frame = &x4->out_pic;
00364
00365
00366 if (avctx->flags & CODEC_FLAG_GLOBAL_HEADER) {
00367 xavs_nal_t *nal;
00368 int nnal, s;
00369
00370 s = xavs_encoder_headers(x4->enc, &nal, &nnal);
00371
00372 avctx->extradata = av_malloc(s);
00373 avctx->extradata_size = encode_nals(avctx, avctx->extradata, s, nal, nnal, 1);
00374 }
00375 return 0;
00376 }
00377
00378 #define OFFSET(x) offsetof(XavsContext, x)
00379 #define VE AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_ENCODING_PARAM
00380 static const AVOption options[] = {
00381 { "crf", "Select the quality for constant quality mode", OFFSET(crf), AV_OPT_TYPE_FLOAT, {-1 }, -1, FLT_MAX, VE },
00382 { "qp", "Constant quantization parameter rate control method",OFFSET(cqp), AV_OPT_TYPE_INT, {-1 }, -1, INT_MAX, VE },
00383 { "b-bias", "Influences how often B-frames are used", OFFSET(b_bias), AV_OPT_TYPE_INT, {INT_MIN}, INT_MIN, INT_MAX, VE },
00384 { "cplxblur", "Reduce fluctuations in QP (before curve compression)", OFFSET(cplxblur), AV_OPT_TYPE_FLOAT, {-1 }, -1, FLT_MAX, VE},
00385 { "direct-pred", "Direct MV prediction mode", OFFSET(direct_pred), AV_OPT_TYPE_INT, {-1 }, -1, INT_MAX, VE, "direct-pred" },
00386 { "none", NULL, 0, AV_OPT_TYPE_CONST, { XAVS_DIRECT_PRED_NONE }, 0, 0, VE, "direct-pred" },
00387 { "spatial", NULL, 0, AV_OPT_TYPE_CONST, { XAVS_DIRECT_PRED_SPATIAL }, 0, 0, VE, "direct-pred" },
00388 { "temporal", NULL, 0, AV_OPT_TYPE_CONST, { XAVS_DIRECT_PRED_TEMPORAL }, 0, 0, VE, "direct-pred" },
00389 { "auto", NULL, 0, AV_OPT_TYPE_CONST, { XAVS_DIRECT_PRED_AUTO }, 0, 0, VE, "direct-pred" },
00390 { "aud", "Use access unit delimiters.", OFFSET(aud), AV_OPT_TYPE_INT, {-1 }, -1, 1, VE},
00391 { "mbtree", "Use macroblock tree ratecontrol.", OFFSET(mbtree), AV_OPT_TYPE_INT, {-1 }, -1, 1, VE},
00392 { "mixed-refs", "One reference per partition, as opposed to one reference per macroblock", OFFSET(mixed_refs), AV_OPT_TYPE_INT, {-1}, -1, 1, VE },
00393 { "fast-pskip", NULL, OFFSET(fast_pskip), AV_OPT_TYPE_INT, {-1 }, -1, 1, VE},
00394 { NULL },
00395 };
00396
00397 static const AVClass class = {
00398 .class_name = "libxavs",
00399 .item_name = av_default_item_name,
00400 .option = options,
00401 .version = LIBAVUTIL_VERSION_INT,
00402 };
00403
00404 static const AVCodecDefault xavs_defaults[] = {
00405 { "b", "0" },
00406 { NULL },
00407 };
00408
00409 AVCodec ff_libxavs_encoder = {
00410 .name = "libxavs",
00411 .type = AVMEDIA_TYPE_VIDEO,
00412 .id = CODEC_ID_CAVS,
00413 .priv_data_size = sizeof(XavsContext),
00414 .init = XAVS_init,
00415 .encode = XAVS_frame,
00416 .close = XAVS_close,
00417 .capabilities = CODEC_CAP_DELAY,
00418 .pix_fmts = (const enum PixelFormat[]) { PIX_FMT_YUV420P, PIX_FMT_NONE },
00419 .long_name = NULL_IF_CONFIG_SMALL("libxavs - the Chinese Audio Video Standard Encoder"),
00420 .priv_class = &class,
00421 .defaults = xavs_defaults,
00422 };
00423