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00022 #include "libavutil/opt.h"
00023 #include "avcodec.h"
00024 #include <x264.h>
00025 #include <math.h>
00026 #include <stdio.h>
00027 #include <stdlib.h>
00028 #include <string.h>
00029
00030 typedef struct X264Context {
00031 AVClass *class;
00032 x264_param_t params;
00033 x264_t *enc;
00034 x264_picture_t pic;
00035 uint8_t *sei;
00036 int sei_size;
00037 AVFrame out_pic;
00038 char *preset;
00039 char *tune;
00040 char *profile;
00041 char *level;
00042 int fastfirstpass;
00043 char *stats;
00044 char *weightp;
00045 char *x264opts;
00046 } X264Context;
00047
00048 static void X264_log(void *p, int level, const char *fmt, va_list args)
00049 {
00050 static const int level_map[] = {
00051 [X264_LOG_ERROR] = AV_LOG_ERROR,
00052 [X264_LOG_WARNING] = AV_LOG_WARNING,
00053 [X264_LOG_INFO] = AV_LOG_INFO,
00054 [X264_LOG_DEBUG] = AV_LOG_DEBUG
00055 };
00056
00057 if (level < 0 || level > X264_LOG_DEBUG)
00058 return;
00059
00060 av_vlog(p, level_map[level], fmt, args);
00061 }
00062
00063
00064 static int encode_nals(AVCodecContext *ctx, uint8_t *buf, int size,
00065 x264_nal_t *nals, int nnal, int skip_sei)
00066 {
00067 X264Context *x4 = ctx->priv_data;
00068 uint8_t *p = buf;
00069 int i;
00070
00071
00072 if (x4->sei_size > 0 && nnal > 0) {
00073 if (x4->sei_size > size) {
00074 av_log(ctx, AV_LOG_ERROR, "Error: nal buffer is too small\n");
00075 return -1;
00076 }
00077 memcpy(p, x4->sei, x4->sei_size);
00078 p += x4->sei_size;
00079 x4->sei_size = 0;
00080
00081 }
00082
00083 for (i = 0; i < nnal; i++){
00084
00085 if (skip_sei && nals[i].i_type == NAL_SEI) {
00086 x4->sei_size = nals[i].i_payload;
00087 x4->sei = av_malloc(x4->sei_size);
00088 memcpy(x4->sei, nals[i].p_payload, nals[i].i_payload);
00089 continue;
00090 }
00091 if (nals[i].i_payload > (size - (p - buf))) {
00092
00093 av_log(ctx, AV_LOG_ERROR, "Error: nal buffer is too small\n");
00094 break;
00095 }
00096 memcpy(p, nals[i].p_payload, nals[i].i_payload);
00097 p += nals[i].i_payload;
00098 }
00099
00100 return p - buf;
00101 }
00102
00103 static int X264_frame(AVCodecContext *ctx, uint8_t *buf,
00104 int orig_bufsize, void *data)
00105 {
00106 X264Context *x4 = ctx->priv_data;
00107 AVFrame *frame = data;
00108 x264_nal_t *nal;
00109 int nnal, i;
00110 x264_picture_t pic_out;
00111 int bufsize;
00112
00113 x264_picture_init( &x4->pic );
00114 x4->pic.img.i_csp = X264_CSP_I420;
00115 x4->pic.img.i_plane = 3;
00116
00117 if (frame) {
00118 for (i = 0; i < 3; i++) {
00119 x4->pic.img.plane[i] = frame->data[i];
00120 x4->pic.img.i_stride[i] = frame->linesize[i];
00121 }
00122
00123 x4->pic.i_pts = frame->pts;
00124 x4->pic.i_type =
00125 frame->pict_type == AV_PICTURE_TYPE_I ? X264_TYPE_KEYFRAME :
00126 frame->pict_type == AV_PICTURE_TYPE_P ? X264_TYPE_P :
00127 frame->pict_type == AV_PICTURE_TYPE_B ? X264_TYPE_B :
00128 X264_TYPE_AUTO;
00129 if (x4->params.b_tff != frame->top_field_first) {
00130 x4->params.b_tff = frame->top_field_first;
00131 x264_encoder_reconfig(x4->enc, &x4->params);
00132 }
00133 if (x4->params.vui.i_sar_height != ctx->sample_aspect_ratio.den
00134 || x4->params.vui.i_sar_width != ctx->sample_aspect_ratio.num) {
00135 x4->params.vui.i_sar_height = ctx->sample_aspect_ratio.den;
00136 x4->params.vui.i_sar_width = ctx->sample_aspect_ratio.num;
00137 x264_encoder_reconfig(x4->enc, &x4->params);
00138 }
00139 }
00140
00141 do {
00142 bufsize = orig_bufsize;
00143 if (x264_encoder_encode(x4->enc, &nal, &nnal, frame? &x4->pic: NULL, &pic_out) < 0)
00144 return -1;
00145
00146 bufsize = encode_nals(ctx, buf, bufsize, nal, nnal, 0);
00147 if (bufsize < 0)
00148 return -1;
00149 } while (!bufsize && !frame && x264_encoder_delayed_frames(x4->enc));
00150
00151
00152 x4->out_pic.pts = pic_out.i_pts;
00153
00154 switch (pic_out.i_type) {
00155 case X264_TYPE_IDR:
00156 case X264_TYPE_I:
00157 x4->out_pic.pict_type = AV_PICTURE_TYPE_I;
00158 break;
00159 case X264_TYPE_P:
00160 x4->out_pic.pict_type = AV_PICTURE_TYPE_P;
00161 break;
00162 case X264_TYPE_B:
00163 case X264_TYPE_BREF:
00164 x4->out_pic.pict_type = AV_PICTURE_TYPE_B;
00165 break;
00166 }
00167
00168 x4->out_pic.key_frame = pic_out.b_keyframe;
00169 if (bufsize)
00170 x4->out_pic.quality = (pic_out.i_qpplus1 - 1) * FF_QP2LAMBDA;
00171
00172 return bufsize;
00173 }
00174
00175 static av_cold int X264_close(AVCodecContext *avctx)
00176 {
00177 X264Context *x4 = avctx->priv_data;
00178
00179 av_freep(&avctx->extradata);
00180 av_free(x4->sei);
00181
00182 if (x4->enc)
00183 x264_encoder_close(x4->enc);
00184
00185 return 0;
00186 }
00187
00191 static void check_default_settings(AVCodecContext *avctx)
00192 {
00193 X264Context *x4 = avctx->priv_data;
00194
00195 int score = 0;
00196 score += x4->params.analyse.i_me_range == 0;
00197 score += x4->params.rc.i_qp_step == 3;
00198 score += x4->params.i_keyint_max == 12;
00199 score += x4->params.rc.i_qp_min == 2;
00200 score += x4->params.rc.i_qp_max == 31;
00201 score += x4->params.rc.f_qcompress == 0.5;
00202 score += fabs(x4->params.rc.f_ip_factor - 1.25) < 0.01;
00203 score += fabs(x4->params.rc.f_pb_factor - 1.25) < 0.01;
00204 score += x4->params.analyse.inter == 0 && x4->params.analyse.i_subpel_refine == 8;
00205 if (score >= 5) {
00206 av_log(avctx, AV_LOG_ERROR, "Default settings detected, using medium profile\n");
00207 x4->preset = av_strdup("medium");
00208 if (avctx->bit_rate == 200*1000)
00209 avctx->crf = 23;
00210 }
00211 }
00212
00213 #define OPT_STR(opt, param) \
00214 do { \
00215 if (param && x264_param_parse(&x4->params, opt, param) < 0) { \
00216 av_log(avctx, AV_LOG_ERROR, \
00217 "bad value for '%s': '%s'\n", opt, param); \
00218 return -1; \
00219 } \
00220 } while (0); \
00221
00222 static av_cold int X264_init(AVCodecContext *avctx)
00223 {
00224 X264Context *x4 = avctx->priv_data;
00225
00226 x4->sei_size = 0;
00227 x264_param_default(&x4->params);
00228
00229 x4->params.i_keyint_max = avctx->gop_size;
00230
00231 x4->params.i_bframe = avctx->max_b_frames;
00232 x4->params.b_cabac = avctx->coder_type == FF_CODER_TYPE_AC;
00233 x4->params.i_bframe_adaptive = avctx->b_frame_strategy;
00234 x4->params.i_bframe_bias = avctx->bframebias;
00235 x4->params.i_bframe_pyramid = avctx->flags2 & CODEC_FLAG2_BPYRAMID ? X264_B_PYRAMID_NORMAL : X264_B_PYRAMID_NONE;
00236
00237 x4->params.i_keyint_min = avctx->keyint_min;
00238 if (x4->params.i_keyint_min > x4->params.i_keyint_max)
00239 x4->params.i_keyint_min = x4->params.i_keyint_max;
00240
00241 x4->params.i_scenecut_threshold = avctx->scenechange_threshold;
00242
00243 x4->params.b_deblocking_filter = avctx->flags & CODEC_FLAG_LOOP_FILTER;
00244 x4->params.i_deblocking_filter_alphac0 = avctx->deblockalpha;
00245 x4->params.i_deblocking_filter_beta = avctx->deblockbeta;
00246
00247 x4->params.rc.i_qp_min = avctx->qmin;
00248 x4->params.rc.i_qp_max = avctx->qmax;
00249 x4->params.rc.i_qp_step = avctx->max_qdiff;
00250
00251 x4->params.rc.f_qcompress = avctx->qcompress;
00252 x4->params.rc.f_qblur = avctx->qblur;
00253 x4->params.rc.f_complexity_blur = avctx->complexityblur;
00254
00255 x4->params.i_frame_reference = avctx->refs;
00256
00257 x4->params.analyse.inter = 0;
00258 if (avctx->partitions) {
00259 if (avctx->partitions & X264_PART_I4X4)
00260 x4->params.analyse.inter |= X264_ANALYSE_I4x4;
00261 if (avctx->partitions & X264_PART_I8X8)
00262 x4->params.analyse.inter |= X264_ANALYSE_I8x8;
00263 if (avctx->partitions & X264_PART_P8X8)
00264 x4->params.analyse.inter |= X264_ANALYSE_PSUB16x16;
00265 if (avctx->partitions & X264_PART_P4X4)
00266 x4->params.analyse.inter |= X264_ANALYSE_PSUB8x8;
00267 if (avctx->partitions & X264_PART_B8X8)
00268 x4->params.analyse.inter |= X264_ANALYSE_BSUB16x16;
00269 }
00270
00271 x4->params.analyse.i_direct_mv_pred = avctx->directpred;
00272
00273 x4->params.analyse.b_weighted_bipred = avctx->flags2 & CODEC_FLAG2_WPRED;
00274
00275 if (avctx->me_method == ME_EPZS)
00276 x4->params.analyse.i_me_method = X264_ME_DIA;
00277 else if (avctx->me_method == ME_HEX)
00278 x4->params.analyse.i_me_method = X264_ME_HEX;
00279 else if (avctx->me_method == ME_UMH)
00280 x4->params.analyse.i_me_method = X264_ME_UMH;
00281 else if (avctx->me_method == ME_FULL)
00282 x4->params.analyse.i_me_method = X264_ME_ESA;
00283 else if (avctx->me_method == ME_TESA)
00284 x4->params.analyse.i_me_method = X264_ME_TESA;
00285 else x4->params.analyse.i_me_method = X264_ME_HEX;
00286
00287 x4->params.rc.i_aq_mode = avctx->aq_mode;
00288 x4->params.rc.f_aq_strength = avctx->aq_strength;
00289 x4->params.rc.i_lookahead = avctx->rc_lookahead;
00290
00291 x4->params.analyse.b_psy = avctx->flags2 & CODEC_FLAG2_PSY;
00292 x4->params.analyse.f_psy_rd = avctx->psy_rd;
00293 x4->params.analyse.f_psy_trellis = avctx->psy_trellis;
00294
00295 x4->params.analyse.i_me_range = avctx->me_range;
00296 x4->params.analyse.i_subpel_refine = avctx->me_subpel_quality;
00297
00298 x4->params.analyse.b_mixed_references = avctx->flags2 & CODEC_FLAG2_MIXED_REFS;
00299 x4->params.analyse.b_chroma_me = avctx->me_cmp & FF_CMP_CHROMA;
00300 x4->params.analyse.b_transform_8x8 = avctx->flags2 & CODEC_FLAG2_8X8DCT;
00301 x4->params.analyse.b_fast_pskip = avctx->flags2 & CODEC_FLAG2_FASTPSKIP;
00302
00303 x4->params.analyse.i_trellis = avctx->trellis;
00304 x4->params.analyse.i_noise_reduction = avctx->noise_reduction;
00305
00306 x4->params.rc.b_mb_tree = !!(avctx->flags2 & CODEC_FLAG2_MBTREE);
00307 x4->params.rc.f_ip_factor = 1 / fabs(avctx->i_quant_factor);
00308 x4->params.rc.f_pb_factor = avctx->b_quant_factor;
00309 x4->params.analyse.i_chroma_qp_offset = avctx->chromaoffset;
00310
00311 if (!x4->preset)
00312 check_default_settings(avctx);
00313
00314 if (x4->preset || x4->tune) {
00315 if (x264_param_default_preset(&x4->params, x4->preset, x4->tune) < 0)
00316 return -1;
00317 }
00318
00319 x4->params.pf_log = X264_log;
00320 x4->params.p_log_private = avctx;
00321 x4->params.i_log_level = X264_LOG_DEBUG;
00322
00323 OPT_STR("weightp", x4->weightp);
00324
00325 x4->params.b_intra_refresh = avctx->flags2 & CODEC_FLAG2_INTRA_REFRESH;
00326 x4->params.rc.i_bitrate = avctx->bit_rate / 1000;
00327 x4->params.rc.i_vbv_buffer_size = avctx->rc_buffer_size / 1000;
00328 x4->params.rc.i_vbv_max_bitrate = avctx->rc_max_rate / 1000;
00329 x4->params.rc.b_stat_write = avctx->flags & CODEC_FLAG_PASS1;
00330 if (avctx->flags & CODEC_FLAG_PASS2) {
00331 x4->params.rc.b_stat_read = 1;
00332 } else {
00333 if (avctx->crf) {
00334 x4->params.rc.i_rc_method = X264_RC_CRF;
00335 x4->params.rc.f_rf_constant = avctx->crf;
00336 x4->params.rc.f_rf_constant_max = avctx->crf_max;
00337 } else if (avctx->cqp > -1) {
00338 x4->params.rc.i_rc_method = X264_RC_CQP;
00339 x4->params.rc.i_qp_constant = avctx->cqp;
00340 }
00341 }
00342
00343 OPT_STR("stats", x4->stats);
00344
00345
00346
00347 if (!(avctx->crf || (avctx->cqp > -1)))
00348 x4->params.rc.i_rc_method = X264_RC_ABR;
00349
00350 if (avctx->rc_buffer_size && avctx->rc_initial_buffer_occupancy &&
00351 (avctx->rc_initial_buffer_occupancy <= avctx->rc_buffer_size)) {
00352 x4->params.rc.f_vbv_buffer_init =
00353 (float)avctx->rc_initial_buffer_occupancy / avctx->rc_buffer_size;
00354 }
00355
00356 OPT_STR("level", x4->level);
00357
00358 if(x4->x264opts){
00359 const char *p= x4->x264opts;
00360 while(p){
00361 char param[256]={0}, val[256]={0};
00362 sscanf(p, "%255[^:=]=%255[^:]", param, val);
00363 OPT_STR(param, val);
00364 p= strchr(p, ':');
00365 p+=!!p;
00366 }
00367 }
00368
00369 if (x4->fastfirstpass)
00370 x264_param_apply_fastfirstpass(&x4->params);
00371
00372 if (x4->profile)
00373 if (x264_param_apply_profile(&x4->params, x4->profile) < 0)
00374 return -1;
00375
00376 x4->params.i_width = avctx->width;
00377 x4->params.i_height = avctx->height;
00378 x4->params.vui.i_sar_width = avctx->sample_aspect_ratio.num;
00379 x4->params.vui.i_sar_height = avctx->sample_aspect_ratio.den;
00380 x4->params.i_fps_num = x4->params.i_timebase_den = avctx->time_base.den;
00381 x4->params.i_fps_den = x4->params.i_timebase_num = avctx->time_base.num;
00382
00383 x4->params.analyse.b_psnr = avctx->flags & CODEC_FLAG_PSNR;
00384 x4->params.analyse.b_ssim = avctx->flags2 & CODEC_FLAG2_SSIM;
00385
00386 x4->params.b_aud = avctx->flags2 & CODEC_FLAG2_AUD;
00387
00388 x4->params.i_threads = avctx->thread_count;
00389
00390 x4->params.b_interlaced = avctx->flags & CODEC_FLAG_INTERLACED_DCT;
00391
00392
00393
00394 x4->params.i_slice_count = avctx->slices;
00395
00396 x4->params.vui.b_fullrange = avctx->pix_fmt == PIX_FMT_YUVJ420P;
00397
00398 if (avctx->flags & CODEC_FLAG_GLOBAL_HEADER)
00399 x4->params.b_repeat_headers = 0;
00400
00401
00402 avctx->has_b_frames = x4->params.i_bframe ?
00403 x4->params.i_bframe_pyramid ? 2 : 1 : 0;
00404 avctx->bit_rate = x4->params.rc.i_bitrate*1000;
00405 avctx->crf = x4->params.rc.f_rf_constant;
00406
00407 x4->enc = x264_encoder_open(&x4->params);
00408 if (!x4->enc)
00409 return -1;
00410
00411 avctx->coded_frame = &x4->out_pic;
00412
00413 if (avctx->flags & CODEC_FLAG_GLOBAL_HEADER) {
00414 x264_nal_t *nal;
00415 int nnal, s, i;
00416
00417 s = x264_encoder_headers(x4->enc, &nal, &nnal);
00418
00419 for (i = 0; i < nnal; i++)
00420 if (nal[i].i_type == NAL_SEI)
00421 av_log(avctx, AV_LOG_INFO, "%s\n", nal[i].p_payload+25);
00422
00423 avctx->extradata = av_malloc(s);
00424 avctx->extradata_size = encode_nals(avctx, avctx->extradata, s, nal, nnal, 1);
00425 }
00426
00427 return 0;
00428 }
00429
00430 #define OFFSET(x) offsetof(X264Context,x)
00431 #define VE AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_ENCODING_PARAM
00432
00433 static const AVOption options[] = {
00434 {"preset", "Set the encoding preset", OFFSET(preset), FF_OPT_TYPE_STRING, {.str=NULL}, 0, 0, VE},
00435 {"tune", "Tune the encoding params", OFFSET(tune), FF_OPT_TYPE_STRING, {.str=NULL}, 0, 0, VE},
00436 {"fastfirstpass", "Use fast settings when encoding first pass", OFFSET(fastfirstpass), FF_OPT_TYPE_INT, {.dbl=1}, 0, 1, VE},
00437 {"profile", "Set profile restrictions", OFFSET(profile), FF_OPT_TYPE_STRING, {.str=NULL}, 0, 0, VE},
00438 {"level", "Specify level (as defined by Annex A)", OFFSET(level), FF_OPT_TYPE_STRING, {.str=NULL}, 0, 0, VE},
00439 {"passlogfile", "Filename for 2 pass stats", OFFSET(stats), FF_OPT_TYPE_STRING, {.str=NULL}, 0, 0, VE},
00440 {"wpredp", "Weighted prediction for P-frames", OFFSET(weightp), FF_OPT_TYPE_STRING, {.str=NULL}, 0, 0, VE},
00441 {"x264opts", "x264 options", OFFSET(x264opts), FF_OPT_TYPE_STRING, {.str=NULL}, 0, 0, VE},
00442 { NULL },
00443 };
00444
00445 static const AVClass class = { "libx264", av_default_item_name, options, LIBAVUTIL_VERSION_INT };
00446
00447 AVCodec ff_libx264_encoder = {
00448 .name = "libx264",
00449 .type = AVMEDIA_TYPE_VIDEO,
00450 .id = CODEC_ID_H264,
00451 .priv_data_size = sizeof(X264Context),
00452 .init = X264_init,
00453 .encode = X264_frame,
00454 .close = X264_close,
00455 .capabilities = CODEC_CAP_DELAY,
00456 .pix_fmts = (const enum PixelFormat[]) { PIX_FMT_YUV420P, PIX_FMT_YUVJ420P, PIX_FMT_NONE },
00457 .long_name = NULL_IF_CONFIG_SMALL("libx264 H.264 / AVC / MPEG-4 AVC / MPEG-4 part 10"),
00458 .priv_class = &class,
00459 };
