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00022 #include "avcodec.h"
00023 #include <x264.h>
00024 #include <math.h>
00025 #include <stdio.h>
00026 #include <stdlib.h>
00027 #include <string.h>
00028
00029 typedef struct X264Context {
00030 x264_param_t params;
00031 x264_t *enc;
00032 x264_picture_t pic;
00033 uint8_t *sei;
00034 int sei_size;
00035 AVFrame out_pic;
00036 } X264Context;
00037
00038 static void X264_log(void *p, int level, const char *fmt, va_list args)
00039 {
00040 static const int level_map[] = {
00041 [X264_LOG_ERROR] = AV_LOG_ERROR,
00042 [X264_LOG_WARNING] = AV_LOG_WARNING,
00043 [X264_LOG_INFO] = AV_LOG_INFO,
00044 [X264_LOG_DEBUG] = AV_LOG_DEBUG
00045 };
00046
00047 if (level < 0 || level > X264_LOG_DEBUG)
00048 return;
00049
00050 av_vlog(p, level_map[level], fmt, args);
00051 }
00052
00053 #if X264_BUILD >= 76
00054 static int encode_nals(AVCodecContext *ctx, uint8_t *buf, int size,
00055 x264_nal_t *nals, int nnal, int skip_sei)
00056 {
00057 X264Context *x4 = ctx->priv_data;
00058 uint8_t *p = buf;
00059 int i;
00060
00061
00062 if (x4->sei_size > 0 && nnal > 0) {
00063 memcpy(p, x4->sei, x4->sei_size);
00064 p += x4->sei_size;
00065 x4->sei_size = 0;
00066 }
00067
00068 for (i = 0; i < nnal; i++){
00069
00070 if (skip_sei && nals[i].i_type == NAL_SEI) {
00071 x4->sei_size = nals[i].i_payload;
00072 x4->sei = av_malloc(x4->sei_size);
00073 memcpy(x4->sei, nals[i].p_payload, nals[i].i_payload);
00074 continue;
00075 }
00076 memcpy(p, nals[i].p_payload, nals[i].i_payload);
00077 p += nals[i].i_payload;
00078 }
00079
00080 return p - buf;
00081 }
00082 #else
00083 static int encode_nals(AVCodecContext *ctx, uint8_t *buf, int size, x264_nal_t *nals, int nnal, int skip_sei)
00084 {
00085 X264Context *x4 = ctx->priv_data;
00086 uint8_t *p = buf;
00087 int i, s;
00088
00089
00090 if (x4->sei_size > 0 && nnal > 0) {
00091 memcpy(p, x4->sei, x4->sei_size);
00092 p += x4->sei_size;
00093 x4->sei_size = 0;
00094 }
00095
00096 for (i = 0; i < nnal; i++) {
00097
00098 if (skip_sei && nals[i].i_type == NAL_SEI) {
00099 x4->sei = av_malloc( 5 + nals[i].i_payload * 4 / 3 );
00100 if(x264_nal_encode(x4->sei, &x4->sei_size, 1, nals + i) < 0)
00101 return -1;
00102 continue;
00103 }
00104 s = x264_nal_encode(p, &size, 1, nals + i);
00105 if (s < 0)
00106 return -1;
00107 p += s;
00108 }
00109
00110 return p - buf;
00111 }
00112 #endif
00113
00114 static int X264_frame(AVCodecContext *ctx, uint8_t *buf,
00115 int bufsize, void *data)
00116 {
00117 X264Context *x4 = ctx->priv_data;
00118 AVFrame *frame = data;
00119 x264_nal_t *nal;
00120 int nnal, i;
00121 x264_picture_t pic_out;
00122
00123 x4->pic.img.i_csp = X264_CSP_I420;
00124 x4->pic.img.i_plane = 3;
00125
00126 if (frame) {
00127 for (i = 0; i < 3; i++) {
00128 x4->pic.img.plane[i] = frame->data[i];
00129 x4->pic.img.i_stride[i] = frame->linesize[i];
00130 }
00131
00132 x4->pic.i_pts = frame->pts;
00133 x4->pic.i_type = X264_TYPE_AUTO;
00134 }
00135
00136 if (x264_encoder_encode(x4->enc, &nal, &nnal, frame? &x4->pic: NULL, &pic_out) < 0)
00137 return -1;
00138
00139 bufsize = encode_nals(ctx, buf, bufsize, nal, nnal, 0);
00140 if (bufsize < 0)
00141 return -1;
00142
00143
00144 x4->out_pic.pts = pic_out.i_pts;
00145
00146 switch (pic_out.i_type) {
00147 case X264_TYPE_IDR:
00148 case X264_TYPE_I:
00149 x4->out_pic.pict_type = FF_I_TYPE;
00150 break;
00151 case X264_TYPE_P:
00152 x4->out_pic.pict_type = FF_P_TYPE;
00153 break;
00154 case X264_TYPE_B:
00155 case X264_TYPE_BREF:
00156 x4->out_pic.pict_type = FF_B_TYPE;
00157 break;
00158 }
00159
00160 #if X264_BUILD < 82
00161 x4->out_pic.key_frame = pic_out.i_type == X264_TYPE_IDR;
00162 #else
00163 x4->out_pic.key_frame = pic_out.b_keyframe;
00164 #endif
00165 x4->out_pic.quality = (pic_out.i_qpplus1 - 1) * FF_QP2LAMBDA;
00166
00167 return bufsize;
00168 }
00169
00170 static av_cold int X264_close(AVCodecContext *avctx)
00171 {
00172 X264Context *x4 = avctx->priv_data;
00173
00174 av_freep(&avctx->extradata);
00175 av_free(x4->sei);
00176
00177 if (x4->enc)
00178 x264_encoder_close(x4->enc);
00179
00180 return 0;
00181 }
00182
00183 static av_cold int X264_init(AVCodecContext *avctx)
00184 {
00185 X264Context *x4 = avctx->priv_data;
00186
00187 x4->sei_size = 0;
00188 x264_param_default(&x4->params);
00189
00190 x4->params.pf_log = X264_log;
00191 x4->params.p_log_private = avctx;
00192
00193 x4->params.i_keyint_max = avctx->gop_size;
00194 x4->params.rc.i_bitrate = avctx->bit_rate / 1000;
00195 x4->params.rc.i_vbv_buffer_size = avctx->rc_buffer_size / 1000;
00196 x4->params.rc.i_vbv_max_bitrate = avctx->rc_max_rate / 1000;
00197 x4->params.rc.b_stat_write = avctx->flags & CODEC_FLAG_PASS1;
00198 if (avctx->flags & CODEC_FLAG_PASS2) {
00199 x4->params.rc.b_stat_read = 1;
00200 } else {
00201 if (avctx->crf) {
00202 x4->params.rc.i_rc_method = X264_RC_CRF;
00203 x4->params.rc.f_rf_constant = avctx->crf;
00204 } else if (avctx->cqp > -1) {
00205 x4->params.rc.i_rc_method = X264_RC_CQP;
00206 x4->params.rc.i_qp_constant = avctx->cqp;
00207 }
00208 }
00209
00210
00211
00212 if (!(avctx->crf || (avctx->cqp > -1)))
00213 x4->params.rc.i_rc_method = X264_RC_ABR;
00214
00215 x4->params.i_bframe = avctx->max_b_frames;
00216 x4->params.b_cabac = avctx->coder_type == FF_CODER_TYPE_AC;
00217 x4->params.i_bframe_adaptive = avctx->b_frame_strategy;
00218 x4->params.i_bframe_bias = avctx->bframebias;
00219 #if X264_BUILD >= 78
00220 x4->params.i_bframe_pyramid = avctx->flags2 & CODEC_FLAG2_BPYRAMID ? X264_B_PYRAMID_NORMAL : X264_B_PYRAMID_NONE;
00221 #else
00222 x4->params.b_bframe_pyramid = avctx->flags2 & CODEC_FLAG2_BPYRAMID;
00223 #endif
00224 avctx->has_b_frames = avctx->flags2 & CODEC_FLAG2_BPYRAMID ? 2 : !!avctx->max_b_frames;
00225
00226 x4->params.i_keyint_min = avctx->keyint_min;
00227 if (x4->params.i_keyint_min > x4->params.i_keyint_max)
00228 x4->params.i_keyint_min = x4->params.i_keyint_max;
00229
00230 x4->params.i_scenecut_threshold = avctx->scenechange_threshold;
00231
00232 x4->params.b_deblocking_filter = avctx->flags & CODEC_FLAG_LOOP_FILTER;
00233 x4->params.i_deblocking_filter_alphac0 = avctx->deblockalpha;
00234 x4->params.i_deblocking_filter_beta = avctx->deblockbeta;
00235
00236 x4->params.rc.i_qp_min = avctx->qmin;
00237 x4->params.rc.i_qp_max = avctx->qmax;
00238 x4->params.rc.i_qp_step = avctx->max_qdiff;
00239
00240 x4->params.rc.f_qcompress = avctx->qcompress;
00241 x4->params.rc.f_qblur = avctx->qblur;
00242 x4->params.rc.f_complexity_blur = avctx->complexityblur;
00243
00244 x4->params.i_frame_reference = avctx->refs;
00245
00246 x4->params.i_width = avctx->width;
00247 x4->params.i_height = avctx->height;
00248 x4->params.vui.i_sar_width = avctx->sample_aspect_ratio.num;
00249 x4->params.vui.i_sar_height = avctx->sample_aspect_ratio.den;
00250 #if X264_BUILD >= 81
00251 x4->params.i_fps_num = x4->params.i_timebase_den = avctx->time_base.den;
00252 x4->params.i_fps_den = x4->params.i_timebase_num = avctx->time_base.num;
00253 #endif
00254
00255 x4->params.analyse.inter = 0;
00256 if (avctx->partitions) {
00257 if (avctx->partitions & X264_PART_I4X4)
00258 x4->params.analyse.inter |= X264_ANALYSE_I4x4;
00259 if (avctx->partitions & X264_PART_I8X8)
00260 x4->params.analyse.inter |= X264_ANALYSE_I8x8;
00261 if (avctx->partitions & X264_PART_P8X8)
00262 x4->params.analyse.inter |= X264_ANALYSE_PSUB16x16;
00263 if (avctx->partitions & X264_PART_P4X4)
00264 x4->params.analyse.inter |= X264_ANALYSE_PSUB8x8;
00265 if (avctx->partitions & X264_PART_B8X8)
00266 x4->params.analyse.inter |= X264_ANALYSE_BSUB16x16;
00267 }
00268
00269 x4->params.analyse.i_direct_mv_pred = avctx->directpred;
00270
00271 x4->params.analyse.b_weighted_bipred = avctx->flags2 & CODEC_FLAG2_WPRED;
00272 #if X264_BUILD >= 79
00273 x4->params.analyse.i_weighted_pred = avctx->weighted_p_pred;
00274 #endif
00275
00276 if (avctx->me_method == ME_EPZS)
00277 x4->params.analyse.i_me_method = X264_ME_DIA;
00278 else if (avctx->me_method == ME_HEX)
00279 x4->params.analyse.i_me_method = X264_ME_HEX;
00280 else if (avctx->me_method == ME_UMH)
00281 x4->params.analyse.i_me_method = X264_ME_UMH;
00282 else if (avctx->me_method == ME_FULL)
00283 x4->params.analyse.i_me_method = X264_ME_ESA;
00284 else if (avctx->me_method == ME_TESA)
00285 x4->params.analyse.i_me_method = X264_ME_TESA;
00286 else x4->params.analyse.i_me_method = X264_ME_HEX;
00287
00288 x4->params.analyse.i_me_range = avctx->me_range;
00289 x4->params.analyse.i_subpel_refine = avctx->me_subpel_quality;
00290
00291 x4->params.analyse.b_mixed_references = avctx->flags2 & CODEC_FLAG2_MIXED_REFS;
00292 x4->params.analyse.b_chroma_me = avctx->me_cmp & FF_CMP_CHROMA;
00293 x4->params.analyse.b_transform_8x8 = avctx->flags2 & CODEC_FLAG2_8X8DCT;
00294 x4->params.analyse.b_fast_pskip = avctx->flags2 & CODEC_FLAG2_FASTPSKIP;
00295
00296 x4->params.analyse.i_trellis = avctx->trellis;
00297 x4->params.analyse.i_noise_reduction = avctx->noise_reduction;
00298
00299 if (avctx->level > 0)
00300 x4->params.i_level_idc = avctx->level;
00301
00302 x4->params.rc.f_rate_tolerance =
00303 (float)avctx->bit_rate_tolerance/avctx->bit_rate;
00304
00305 if ((avctx->rc_buffer_size != 0) &&
00306 (avctx->rc_initial_buffer_occupancy <= avctx->rc_buffer_size)) {
00307 x4->params.rc.f_vbv_buffer_init =
00308 (float)avctx->rc_initial_buffer_occupancy / avctx->rc_buffer_size;
00309 } else
00310 x4->params.rc.f_vbv_buffer_init = 0.9;
00311
00312 #if X264_BUILD >= 69
00313 x4->params.rc.b_mb_tree = !!(avctx->flags2 & CODEC_FLAG2_MBTREE);
00314 #endif
00315 x4->params.rc.f_ip_factor = 1 / fabs(avctx->i_quant_factor);
00316 x4->params.rc.f_pb_factor = avctx->b_quant_factor;
00317 x4->params.analyse.i_chroma_qp_offset = avctx->chromaoffset;
00318
00319 x4->params.analyse.b_psnr = avctx->flags & CODEC_FLAG_PSNR;
00320 x4->params.i_log_level = X264_LOG_DEBUG;
00321
00322 x4->params.b_aud = avctx->flags2 & CODEC_FLAG2_AUD;
00323
00324 x4->params.i_threads = avctx->thread_count;
00325
00326 x4->params.b_interlaced = avctx->flags & CODEC_FLAG_INTERLACED_DCT;
00327
00328 if (avctx->flags & CODEC_FLAG_GLOBAL_HEADER)
00329 x4->params.b_repeat_headers = 0;
00330
00331 x4->enc = x264_encoder_open(&x4->params);
00332 if (!x4->enc)
00333 return -1;
00334
00335 avctx->coded_frame = &x4->out_pic;
00336
00337 #if X264_BUILD >= 76
00338 if (avctx->flags & CODEC_FLAG_GLOBAL_HEADER) {
00339 x264_nal_t *nal;
00340 int nnal, s;
00341
00342 s = x264_encoder_headers(x4->enc, &nal, &nnal);
00343
00344 avctx->extradata = av_malloc(s);
00345 avctx->extradata_size = encode_nals(avctx, avctx->extradata, s, nal, nnal, 1);
00346 }
00347 #else
00348 if(avctx->flags & CODEC_FLAG_GLOBAL_HEADER){
00349 x264_nal_t *nal;
00350 int nnal, i, s = 0;
00351
00352 x264_encoder_headers(x4->enc, &nal, &nnal);
00353
00354
00355 for (i = 0; i < nnal; i++)
00356 s += 5 + nal[i].i_payload * 4 / 3;
00357
00358 avctx->extradata = av_malloc(s);
00359 avctx->extradata_size = encode_nals(avctx, avctx->extradata, s, nal, nnal, 1);
00360 }
00361 #endif
00362
00363 return 0;
00364 }
00365
00366 AVCodec libx264_encoder = {
00367 .name = "libx264",
00368 .type = CODEC_TYPE_VIDEO,
00369 .id = CODEC_ID_H264,
00370 .priv_data_size = sizeof(X264Context),
00371 .init = X264_init,
00372 .encode = X264_frame,
00373 .close = X264_close,
00374 .capabilities = CODEC_CAP_DELAY,
00375 .pix_fmts = (const enum PixelFormat[]) { PIX_FMT_YUV420P, PIX_FMT_NONE },
00376 .long_name = NULL_IF_CONFIG_SMALL("libx264 H.264 / AVC / MPEG-4 AVC / MPEG-4 part 10"),
00377 };