Fix indentation in avcodec.h
[libav.git] / libavcodec / libx264.c
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1/*
2 * H.264 encoding using the x264 library
f2250162 3 * Copyright (C) 2005 Mans Rullgard <mans@mansr.com>
6662ec29 4 *
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5 * This file is part of FFmpeg.
6 *
7 * FFmpeg is free software; you can redistribute it and/or
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8 * modify it under the terms of the GNU Lesser General Public
9 * License as published by the Free Software Foundation; either
b78e7197 10 * version 2.1 of the License, or (at your option) any later version.
6662ec29 11 *
b78e7197 12 * FFmpeg is distributed in the hope that it will be useful,
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13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * Lesser General Public License for more details.
16 *
17 * You should have received a copy of the GNU Lesser General Public
b78e7197 18 * License along with FFmpeg; if not, write to the Free Software
5509bffa 19 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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20 */
21
22#include "avcodec.h"
23#include <x264.h>
337afd14 24#include <math.h>
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25#include <stdio.h>
26#include <stdlib.h>
27#include <string.h>
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28
29typedef struct X264Context {
30 x264_param_t params;
31 x264_t *enc;
32 x264_picture_t pic;
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33 uint8_t *sei;
34 int sei_size;
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35 AVFrame out_pic;
36} X264Context;
37
38static void
39X264_log(void *p, int level, const char *fmt, va_list args)
40{
41 static const int level_map[] = {
bb270c08 42 [X264_LOG_ERROR] = AV_LOG_ERROR,
3709f0d7 43 [X264_LOG_WARNING] = AV_LOG_WARNING,
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44 [X264_LOG_INFO] = AV_LOG_INFO,
45 [X264_LOG_DEBUG] = AV_LOG_DEBUG
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46 };
47
48 if(level < 0 || level > X264_LOG_DEBUG)
bb270c08 49 return;
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50
51 av_vlog(p, level_map[level], fmt, args);
52}
53
54
2d3beede 55static int encode_nals(AVCodecContext *ctx, uint8_t *buf, int size, x264_nal_t *nals, int nnal, int skip_sei)
6662ec29 56{
fe022ce2 57 X264Context *x4 = ctx->priv_data;
f40487c2 58 uint8_t *p = buf;
2d3beede 59 int i;
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60
61 /* Write the SEI as part of the first frame. */
2d3beede 62 if(x4->sei_size > 0 && nnal > 0){
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63 memcpy(p, x4->sei, x4->sei_size);
64 p += x4->sei_size;
65 x4->sei_size = 0;
66 }
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67
68 for(i = 0; i < nnal; i++){
fe022ce2 69 /* Don't put the SEI in extradata. */
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70 if(skip_sei && nals[i].i_type == NAL_SEI){
71 x4->sei_size = nals[i].i_payload;
72 x4->sei = av_malloc(x4->sei_size);
73 memcpy(x4->sei, nals[i].p_payload, nals[i].i_payload);
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74 continue;
75 }
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76 memcpy(p, nals[i].p_payload, nals[i].i_payload);
77 p += nals[i].i_payload;
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78 }
79
80 return p - buf;
81}
82
c328f313 83static int
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84X264_frame(AVCodecContext *ctx, uint8_t *buf, int bufsize, void *data)
85{
86 X264Context *x4 = ctx->priv_data;
87 AVFrame *frame = data;
88 x264_nal_t *nal;
89 int nnal, i;
90 x264_picture_t pic_out;
91
92 x4->pic.img.i_csp = X264_CSP_I420;
93 x4->pic.img.i_plane = 3;
94
2d3beede 95 if(frame){
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96 for(i = 0; i < 3; i++){
97 x4->pic.img.plane[i] = frame->data[i];
98 x4->pic.img.i_stride[i] = frame->linesize[i];
99 }
6662ec29 100
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101 x4->pic.i_pts = frame->pts;
102 x4->pic.i_type = X264_TYPE_AUTO;
84278104 103 }
6662ec29 104
2d3beede 105 if(x264_encoder_encode(x4->enc, &nal, &nnal, frame? &x4->pic: NULL, &pic_out) < 0)
bb270c08 106 return -1;
6662ec29 107
fe022ce2 108 bufsize = encode_nals(ctx, buf, bufsize, nal, nnal, 0);
6662ec29 109 if(bufsize < 0)
bb270c08 110 return -1;
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111
112 /* FIXME: dts */
113 x4->out_pic.pts = pic_out.i_pts;
114
115 switch(pic_out.i_type){
116 case X264_TYPE_IDR:
117 case X264_TYPE_I:
118 x4->out_pic.pict_type = FF_I_TYPE;
119 break;
120 case X264_TYPE_P:
121 x4->out_pic.pict_type = FF_P_TYPE;
122 break;
123 case X264_TYPE_B:
124 case X264_TYPE_BREF:
125 x4->out_pic.pict_type = FF_B_TYPE;
126 break;
127 }
128
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129 x4->out_pic.key_frame = pic_out.i_type == X264_TYPE_IDR;
130 x4->out_pic.quality = (pic_out.i_qpplus1 - 1) * FF_QP2LAMBDA;
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131
132 return bufsize;
133}
134
98a6fff9 135static av_cold int
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136X264_close(AVCodecContext *avctx)
137{
138 X264Context *x4 = avctx->priv_data;
139
5c4e9728 140 av_freep(&avctx->extradata);
fe022ce2 141 av_free(x4->sei);
5c4e9728 142
6662ec29 143 if(x4->enc)
bb270c08 144 x264_encoder_close(x4->enc);
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145
146 return 0;
147}
148
98a6fff9 149static av_cold int
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150X264_init(AVCodecContext *avctx)
151{
152 X264Context *x4 = avctx->priv_data;
153
fe022ce2 154 x4->sei_size = 0;
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155 x264_param_default(&x4->params);
156
157 x4->params.pf_log = X264_log;
158 x4->params.p_log_private = avctx;
159
160 x4->params.i_keyint_max = avctx->gop_size;
161 x4->params.rc.i_bitrate = avctx->bit_rate / 1000;
3f9d3777 162 x4->params.rc.i_vbv_buffer_size = avctx->rc_buffer_size / 1000;
18ae520b 163 x4->params.rc.i_vbv_max_bitrate = avctx->rc_max_rate / 1000;
682a48a1 164 x4->params.rc.b_stat_write = avctx->flags & CODEC_FLAG_PASS1;
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165 if(avctx->flags & CODEC_FLAG_PASS2) x4->params.rc.b_stat_read = 1;
166 else{
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167 if(avctx->crf){
168 x4->params.rc.i_rc_method = X264_RC_CRF;
9f1c1c99 169 x4->params.rc.f_rf_constant = avctx->crf;
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170 }else if(avctx->cqp > -1){
171 x4->params.rc.i_rc_method = X264_RC_CQP;
172 x4->params.rc.i_qp_constant = avctx->cqp;
173 }
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174 }
175
176 // if neither crf nor cqp modes are selected we have to enable the RC
177 // we do it this way because we cannot check if the bitrate has been set
8b75e45d 178 if(!(avctx->crf || (avctx->cqp > -1))) x4->params.rc.i_rc_method = X264_RC_ABR;
58f7833e 179
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180 x4->params.i_bframe = avctx->max_b_frames;
181 x4->params.b_cabac = avctx->coder_type == FF_CODER_TYPE_AC;
0bc4c436 182 x4->params.i_bframe_adaptive = avctx->b_frame_strategy;
58f7833e 183 x4->params.i_bframe_bias = avctx->bframebias;
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184 x4->params.b_bframe_pyramid = avctx->flags2 & CODEC_FLAG2_BPYRAMID;
185 avctx->has_b_frames= avctx->flags2 & CODEC_FLAG2_BPYRAMID ? 2 : !!avctx->max_b_frames;
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186
187 x4->params.i_keyint_min = avctx->keyint_min;
188 if(x4->params.i_keyint_min > x4->params.i_keyint_max)
189 x4->params.i_keyint_min = x4->params.i_keyint_max;
190
191 x4->params.i_scenecut_threshold = avctx->scenechange_threshold;
192
682a48a1 193 x4->params.b_deblocking_filter = avctx->flags & CODEC_FLAG_LOOP_FILTER;
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194 x4->params.i_deblocking_filter_alphac0 = avctx->deblockalpha;
195 x4->params.i_deblocking_filter_beta = avctx->deblockbeta;
f9791751 196
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197 x4->params.rc.i_qp_min = avctx->qmin;
198 x4->params.rc.i_qp_max = avctx->qmax;
199 x4->params.rc.i_qp_step = avctx->max_qdiff;
200
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201 x4->params.rc.f_qcompress = avctx->qcompress; /* 0.0 => cbr, 1.0 => constant qp */
202 x4->params.rc.f_qblur = avctx->qblur; /* temporally blur quants */
58f7833e 203 x4->params.rc.f_complexity_blur = avctx->complexityblur;
18ae520b 204
58f7833e 205 x4->params.i_frame_reference = avctx->refs;
68c6d60f 206
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207 x4->params.i_width = avctx->width;
208 x4->params.i_height = avctx->height;
209 x4->params.vui.i_sar_width = avctx->sample_aspect_ratio.num;
210 x4->params.vui.i_sar_height = avctx->sample_aspect_ratio.den;
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211 x4->params.i_fps_num = avctx->time_base.den;
212 x4->params.i_fps_den = avctx->time_base.num;
6662ec29 213
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214 x4->params.analyse.inter = 0;
215 if(avctx->partitions){
216 if(avctx->partitions & X264_PART_I4X4)
217 x4->params.analyse.inter |= X264_ANALYSE_I4x4;
218 if(avctx->partitions & X264_PART_I8X8)
219 x4->params.analyse.inter |= X264_ANALYSE_I8x8;
220 if(avctx->partitions & X264_PART_P8X8)
221 x4->params.analyse.inter |= X264_ANALYSE_PSUB16x16;
222 if(avctx->partitions & X264_PART_P4X4)
223 x4->params.analyse.inter |= X264_ANALYSE_PSUB8x8;
224 if(avctx->partitions & X264_PART_B8X8)
225 x4->params.analyse.inter |= X264_ANALYSE_BSUB16x16;
226 }
227
228 x4->params.analyse.i_direct_mv_pred = avctx->directpred;
229
682a48a1 230 x4->params.analyse.b_weighted_bipred = avctx->flags2 & CODEC_FLAG2_WPRED;
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231
232 if(avctx->me_method == ME_EPZS)
233 x4->params.analyse.i_me_method = X264_ME_DIA;
234 else if(avctx->me_method == ME_HEX)
235 x4->params.analyse.i_me_method = X264_ME_HEX;
236 else if(avctx->me_method == ME_UMH)
237 x4->params.analyse.i_me_method = X264_ME_UMH;
238 else if(avctx->me_method == ME_FULL)
239 x4->params.analyse.i_me_method = X264_ME_ESA;
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240 else if(avctx->me_method == ME_TESA)
241 x4->params.analyse.i_me_method = X264_ME_TESA;
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242 else x4->params.analyse.i_me_method = X264_ME_HEX;
243
244 x4->params.analyse.i_me_range = avctx->me_range;
245 x4->params.analyse.i_subpel_refine = avctx->me_subpel_quality;
246
58f7833e 247 x4->params.analyse.b_mixed_references =
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248 avctx->flags2 & CODEC_FLAG2_MIXED_REFS;
249 x4->params.analyse.b_chroma_me = avctx->me_cmp & FF_CMP_CHROMA;
250 x4->params.analyse.b_transform_8x8 = avctx->flags2 & CODEC_FLAG2_8X8DCT;
251 x4->params.analyse.b_fast_pskip = avctx->flags2 & CODEC_FLAG2_FASTPSKIP;
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252
253 x4->params.analyse.i_trellis = avctx->trellis;
277fe229 254 x4->params.analyse.i_noise_reduction = avctx->noise_reduction;
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255
256 if(avctx->level > 0) x4->params.i_level_idc = avctx->level;
257
4f59b684 258 x4->params.rc.f_rate_tolerance =
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259 (float)avctx->bit_rate_tolerance/avctx->bit_rate;
260
261 if((avctx->rc_buffer_size != 0) &&
262 (avctx->rc_initial_buffer_occupancy <= avctx->rc_buffer_size)){
263 x4->params.rc.f_vbv_buffer_init =
264 (float)avctx->rc_initial_buffer_occupancy/avctx->rc_buffer_size;
265 }
266 else x4->params.rc.f_vbv_buffer_init = 0.9;
267
268 x4->params.rc.f_ip_factor = 1/fabs(avctx->i_quant_factor);
269 x4->params.rc.f_pb_factor = avctx->b_quant_factor;
270 x4->params.analyse.i_chroma_qp_offset = avctx->chromaoffset;
58f7833e 271
682a48a1 272 x4->params.analyse.b_psnr = avctx->flags & CODEC_FLAG_PSNR;
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273 x4->params.i_log_level = X264_LOG_DEBUG;
274
682a48a1 275 x4->params.b_aud = avctx->flags2 & CODEC_FLAG2_AUD;
58f7833e 276
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277 x4->params.i_threads = avctx->thread_count;
278
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279 x4->params.b_interlaced = avctx->flags & CODEC_FLAG_INTERLACED_DCT;
280
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281 if(avctx->flags & CODEC_FLAG_GLOBAL_HEADER){
282 x4->params.b_repeat_headers = 0;
283 }
284
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285 x4->enc = x264_encoder_open(&x4->params);
286 if(!x4->enc)
287 return -1;
288
289 avctx->coded_frame = &x4->out_pic;
290
806011f2 291 if(avctx->flags & CODEC_FLAG_GLOBAL_HEADER){
4f59b684 292 x264_nal_t *nal;
2d3beede 293 int nnal, s;
806011f2 294
2d3beede 295 s = x264_encoder_headers(x4->enc, &nal, &nnal);
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296
297 avctx->extradata = av_malloc(s);
fe022ce2 298 avctx->extradata_size = encode_nals(avctx, avctx->extradata, s, nal, nnal, 1);
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299 }
300
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301 return 0;
302}
303
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304AVCodec libx264_encoder = {
305 .name = "libx264",
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306 .type = CODEC_TYPE_VIDEO,
307 .id = CODEC_ID_H264,
308 .priv_data_size = sizeof(X264Context),
309 .init = X264_init,
310 .encode = X264_frame,
311 .close = X264_close,
84278104 312 .capabilities = CODEC_CAP_DELAY,
2ba83017 313 .pix_fmts = (const enum PixelFormat[]) { PIX_FMT_YUV420P, PIX_FMT_NONE },
fe4bf374 314 .long_name = NULL_IF_CONFIG_SMALL("libx264 H.264 / AVC / MPEG-4 AVC / MPEG-4 part 10"),
6662ec29 315};