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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
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
00083 static int X264_frame(AVCodecContext *ctx, uint8_t *buf,
00084 int bufsize, void *data)
00085 {
00086 X264Context *x4 = ctx->priv_data;
00087 AVFrame *frame = data;
00088 x264_nal_t *nal;
00089 int nnal, i;
00090 x264_picture_t pic_out;
00091
00092 x264_picture_init( &x4->pic );
00093 x4->pic.img.i_csp = X264_CSP_I420;
00094 x4->pic.img.i_plane = 3;
00095
00096 if (frame) {
00097 for (i = 0; i < 3; i++) {
00098 x4->pic.img.plane[i] = frame->data[i];
00099 x4->pic.img.i_stride[i] = frame->linesize[i];
00100 }
00101
00102 x4->pic.i_pts = frame->pts;
00103 x4->pic.i_type =
00104 frame->pict_type == FF_I_TYPE ? X264_TYPE_KEYFRAME :
00105 frame->pict_type == FF_P_TYPE ? X264_TYPE_P :
00106 frame->pict_type == FF_B_TYPE ? X264_TYPE_B :
00107 X264_TYPE_AUTO;
00108 }
00109
00110 do {
00111 if (x264_encoder_encode(x4->enc, &nal, &nnal, frame? &x4->pic: NULL, &pic_out) < 0)
00112 return -1;
00113
00114 bufsize = encode_nals(ctx, buf, bufsize, nal, nnal, 0);
00115 if (bufsize < 0)
00116 return -1;
00117 } while (!bufsize && !frame && x264_encoder_delayed_frames(x4->enc));
00118
00119
00120 x4->out_pic.pts = pic_out.i_pts;
00121
00122 switch (pic_out.i_type) {
00123 case X264_TYPE_IDR:
00124 case X264_TYPE_I:
00125 x4->out_pic.pict_type = FF_I_TYPE;
00126 break;
00127 case X264_TYPE_P:
00128 x4->out_pic.pict_type = FF_P_TYPE;
00129 break;
00130 case X264_TYPE_B:
00131 case X264_TYPE_BREF:
00132 x4->out_pic.pict_type = FF_B_TYPE;
00133 break;
00134 }
00135
00136 x4->out_pic.key_frame = pic_out.b_keyframe;
00137 x4->out_pic.quality = (pic_out.i_qpplus1 - 1) * FF_QP2LAMBDA;
00138
00139 return bufsize;
00140 }
00141
00142 static av_cold int X264_close(AVCodecContext *avctx)
00143 {
00144 X264Context *x4 = avctx->priv_data;
00145
00146 av_freep(&avctx->extradata);
00147 av_free(x4->sei);
00148
00149 if (x4->enc)
00150 x264_encoder_close(x4->enc);
00151
00152 return 0;
00153 }
00154
00155 static av_cold int X264_init(AVCodecContext *avctx)
00156 {
00157 X264Context *x4 = avctx->priv_data;
00158
00159 x4->sei_size = 0;
00160 x264_param_default(&x4->params);
00161
00162 x4->params.pf_log = X264_log;
00163 x4->params.p_log_private = avctx;
00164
00165 x4->params.i_keyint_max = avctx->gop_size;
00166 x4->params.b_intra_refresh = avctx->flags2 & CODEC_FLAG2_INTRA_REFRESH;
00167 x4->params.rc.i_bitrate = avctx->bit_rate / 1000;
00168 x4->params.rc.i_vbv_buffer_size = avctx->rc_buffer_size / 1000;
00169 x4->params.rc.i_vbv_max_bitrate = avctx->rc_max_rate / 1000;
00170 x4->params.rc.b_stat_write = avctx->flags & CODEC_FLAG_PASS1;
00171 if (avctx->flags & CODEC_FLAG_PASS2) {
00172 x4->params.rc.b_stat_read = 1;
00173 } else {
00174 if (avctx->crf) {
00175 x4->params.rc.i_rc_method = X264_RC_CRF;
00176 x4->params.rc.f_rf_constant = avctx->crf;
00177 x4->params.rc.f_rf_constant_max = avctx->crf_max;
00178 } else if (avctx->cqp > -1) {
00179 x4->params.rc.i_rc_method = X264_RC_CQP;
00180 x4->params.rc.i_qp_constant = avctx->cqp;
00181 }
00182 }
00183
00184
00185
00186 if (!(avctx->crf || (avctx->cqp > -1)))
00187 x4->params.rc.i_rc_method = X264_RC_ABR;
00188
00189 x4->params.i_bframe = avctx->max_b_frames;
00190 x4->params.b_cabac = avctx->coder_type == FF_CODER_TYPE_AC;
00191 x4->params.i_bframe_adaptive = avctx->b_frame_strategy;
00192 x4->params.i_bframe_bias = avctx->bframebias;
00193 x4->params.i_bframe_pyramid = avctx->flags2 & CODEC_FLAG2_BPYRAMID ? X264_B_PYRAMID_NORMAL : X264_B_PYRAMID_NONE;
00194 avctx->has_b_frames = avctx->flags2 & CODEC_FLAG2_BPYRAMID ? 2 : !!avctx->max_b_frames;
00195
00196 x4->params.i_keyint_min = avctx->keyint_min;
00197 if (x4->params.i_keyint_min > x4->params.i_keyint_max)
00198 x4->params.i_keyint_min = x4->params.i_keyint_max;
00199
00200 x4->params.i_scenecut_threshold = avctx->scenechange_threshold;
00201
00202 x4->params.b_deblocking_filter = avctx->flags & CODEC_FLAG_LOOP_FILTER;
00203 x4->params.i_deblocking_filter_alphac0 = avctx->deblockalpha;
00204 x4->params.i_deblocking_filter_beta = avctx->deblockbeta;
00205
00206 x4->params.rc.i_qp_min = avctx->qmin;
00207 x4->params.rc.i_qp_max = avctx->qmax;
00208 x4->params.rc.i_qp_step = avctx->max_qdiff;
00209
00210 x4->params.rc.f_qcompress = avctx->qcompress;
00211 x4->params.rc.f_qblur = avctx->qblur;
00212 x4->params.rc.f_complexity_blur = avctx->complexityblur;
00213
00214 x4->params.i_frame_reference = avctx->refs;
00215
00216 x4->params.i_width = avctx->width;
00217 x4->params.i_height = avctx->height;
00218 x4->params.vui.i_sar_width = avctx->sample_aspect_ratio.num;
00219 x4->params.vui.i_sar_height = avctx->sample_aspect_ratio.den;
00220 x4->params.i_fps_num = x4->params.i_timebase_den = avctx->time_base.den;
00221 x4->params.i_fps_den = x4->params.i_timebase_num = avctx->time_base.num;
00222
00223 x4->params.analyse.inter = 0;
00224 if (avctx->partitions) {
00225 if (avctx->partitions & X264_PART_I4X4)
00226 x4->params.analyse.inter |= X264_ANALYSE_I4x4;
00227 if (avctx->partitions & X264_PART_I8X8)
00228 x4->params.analyse.inter |= X264_ANALYSE_I8x8;
00229 if (avctx->partitions & X264_PART_P8X8)
00230 x4->params.analyse.inter |= X264_ANALYSE_PSUB16x16;
00231 if (avctx->partitions & X264_PART_P4X4)
00232 x4->params.analyse.inter |= X264_ANALYSE_PSUB8x8;
00233 if (avctx->partitions & X264_PART_B8X8)
00234 x4->params.analyse.inter |= X264_ANALYSE_BSUB16x16;
00235 }
00236
00237 x4->params.analyse.i_direct_mv_pred = avctx->directpred;
00238
00239 x4->params.analyse.b_weighted_bipred = avctx->flags2 & CODEC_FLAG2_WPRED;
00240 x4->params.analyse.i_weighted_pred = avctx->weighted_p_pred;
00241
00242 if (avctx->me_method == ME_EPZS)
00243 x4->params.analyse.i_me_method = X264_ME_DIA;
00244 else if (avctx->me_method == ME_HEX)
00245 x4->params.analyse.i_me_method = X264_ME_HEX;
00246 else if (avctx->me_method == ME_UMH)
00247 x4->params.analyse.i_me_method = X264_ME_UMH;
00248 else if (avctx->me_method == ME_FULL)
00249 x4->params.analyse.i_me_method = X264_ME_ESA;
00250 else if (avctx->me_method == ME_TESA)
00251 x4->params.analyse.i_me_method = X264_ME_TESA;
00252 else x4->params.analyse.i_me_method = X264_ME_HEX;
00253
00254 x4->params.rc.i_aq_mode = avctx->aq_mode;
00255 x4->params.rc.f_aq_strength = avctx->aq_strength;
00256 x4->params.rc.i_lookahead = avctx->rc_lookahead;
00257
00258 x4->params.analyse.b_psy = avctx->flags2 & CODEC_FLAG2_PSY;
00259 x4->params.analyse.f_psy_rd = avctx->psy_rd;
00260 x4->params.analyse.f_psy_trellis = avctx->psy_trellis;
00261
00262 x4->params.analyse.i_me_range = avctx->me_range;
00263 x4->params.analyse.i_subpel_refine = avctx->me_subpel_quality;
00264
00265 x4->params.analyse.b_mixed_references = avctx->flags2 & CODEC_FLAG2_MIXED_REFS;
00266 x4->params.analyse.b_chroma_me = avctx->me_cmp & FF_CMP_CHROMA;
00267 x4->params.analyse.b_transform_8x8 = avctx->flags2 & CODEC_FLAG2_8X8DCT;
00268 x4->params.analyse.b_fast_pskip = avctx->flags2 & CODEC_FLAG2_FASTPSKIP;
00269
00270 x4->params.analyse.i_trellis = avctx->trellis;
00271 x4->params.analyse.i_noise_reduction = avctx->noise_reduction;
00272
00273 if (avctx->level > 0)
00274 x4->params.i_level_idc = avctx->level;
00275
00276 if ((avctx->rc_buffer_size != 0) &&
00277 (avctx->rc_initial_buffer_occupancy <= avctx->rc_buffer_size)) {
00278 x4->params.rc.f_vbv_buffer_init =
00279 (float)avctx->rc_initial_buffer_occupancy / avctx->rc_buffer_size;
00280 } else
00281 x4->params.rc.f_vbv_buffer_init = 0.9;
00282
00283 x4->params.rc.b_mb_tree = !!(avctx->flags2 & CODEC_FLAG2_MBTREE);
00284 x4->params.rc.f_ip_factor = 1 / fabs(avctx->i_quant_factor);
00285 x4->params.rc.f_pb_factor = avctx->b_quant_factor;
00286 x4->params.analyse.i_chroma_qp_offset = avctx->chromaoffset;
00287
00288 x4->params.analyse.b_psnr = avctx->flags & CODEC_FLAG_PSNR;
00289 x4->params.analyse.b_ssim = avctx->flags2 & CODEC_FLAG2_SSIM;
00290 x4->params.i_log_level = X264_LOG_DEBUG;
00291
00292 x4->params.b_aud = avctx->flags2 & CODEC_FLAG2_AUD;
00293
00294 x4->params.i_threads = avctx->thread_count;
00295
00296 x4->params.b_interlaced = avctx->flags & CODEC_FLAG_INTERLACED_DCT;
00297
00298 x4->params.i_slice_count = avctx->slices;
00299
00300 x4->params.vui.b_fullrange = avctx->pix_fmt == PIX_FMT_YUVJ420P;
00301
00302 if (avctx->flags & CODEC_FLAG_GLOBAL_HEADER)
00303 x4->params.b_repeat_headers = 0;
00304
00305 x4->enc = x264_encoder_open(&x4->params);
00306 if (!x4->enc)
00307 return -1;
00308
00309 avctx->coded_frame = &x4->out_pic;
00310
00311 if (avctx->flags & CODEC_FLAG_GLOBAL_HEADER) {
00312 x264_nal_t *nal;
00313 int nnal, s, i;
00314
00315 s = x264_encoder_headers(x4->enc, &nal, &nnal);
00316
00317 for (i = 0; i < nnal; i++)
00318 if (nal[i].i_type == NAL_SEI)
00319 av_log(avctx, AV_LOG_INFO, "%s\n", nal[i].p_payload+25);
00320
00321 avctx->extradata = av_malloc(s);
00322 avctx->extradata_size = encode_nals(avctx, avctx->extradata, s, nal, nnal, 1);
00323 }
00324
00325 return 0;
00326 }
00327
00328 AVCodec libx264_encoder = {
00329 .name = "libx264",
00330 .type = AVMEDIA_TYPE_VIDEO,
00331 .id = CODEC_ID_H264,
00332 .priv_data_size = sizeof(X264Context),
00333 .init = X264_init,
00334 .encode = X264_frame,
00335 .close = X264_close,
00336 .capabilities = CODEC_CAP_DELAY,
00337 .pix_fmts = (const enum PixelFormat[]) { PIX_FMT_YUV420P, PIX_FMT_YUVJ420P, PIX_FMT_NONE },
00338 .long_name = NULL_IF_CONFIG_SMALL("libx264 H.264 / AVC / MPEG-4 AVC / MPEG-4 part 10"),
00339 };
