Minor version bump for mbtree addition.
[libav.git] / libavcodec / libx264.c
CommitLineData
6662ec29
MN
1/*
2 * H.264 encoding using the x264 library
f2250162 3 * Copyright (C) 2005 Mans Rullgard <mans@mansr.com>
6662ec29 4 *
b78e7197
DB
5 * This file is part of FFmpeg.
6 *
7 * FFmpeg is free software; you can redistribute it and/or
6662ec29
MN
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,
6662ec29
MN
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
6662ec29
MN
20 */
21
22#include "avcodec.h"
23#include <x264.h>
337afd14 24#include <math.h>
58f7833e
RS
25#include <stdio.h>
26#include <stdlib.h>
27#include <string.h>
6662ec29
MN
28
29typedef struct X264Context {
8a8720c1
DB
30 x264_param_t params;
31 x264_t *enc;
32 x264_picture_t pic;
33 uint8_t *sei;
34 int sei_size;
35 AVFrame out_pic;
6662ec29
MN
36} X264Context;
37
8a8720c1 38static void X264_log(void *p, int level, const char *fmt, va_list args)
6662ec29
MN
39{
40 static const int level_map[] = {
bb270c08 41 [X264_LOG_ERROR] = AV_LOG_ERROR,
3709f0d7 42 [X264_LOG_WARNING] = AV_LOG_WARNING,
bb270c08
DB
43 [X264_LOG_INFO] = AV_LOG_INFO,
44 [X264_LOG_DEBUG] = AV_LOG_DEBUG
6662ec29
MN
45 };
46
8a8720c1 47 if (level < 0 || level > X264_LOG_DEBUG)
bb270c08 48 return;
6662ec29
MN
49
50 av_vlog(p, level_map[level], fmt, args);
51}
52
53
8a8720c1
DB
54static int encode_nals(AVCodecContext *ctx, uint8_t *buf, int size,
55 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;
fe022ce2
JGG
60
61 /* Write the SEI as part of the first frame. */
8a8720c1 62 if (x4->sei_size > 0 && nnal > 0) {
fe022ce2
JGG
63 memcpy(p, x4->sei, x4->sei_size);
64 p += x4->sei_size;
65 x4->sei_size = 0;
66 }
6662ec29 67
8a8720c1 68 for (i = 0; i < nnal; i++){
fe022ce2 69 /* Don't put the SEI in extradata. */
8a8720c1 70 if (skip_sei && nals[i].i_type == NAL_SEI) {
2d3beede 71 x4->sei_size = nals[i].i_payload;
8a8720c1 72 x4->sei = av_malloc(x4->sei_size);
2d3beede 73 memcpy(x4->sei, nals[i].p_payload, nals[i].i_payload);
fe022ce2
JGG
74 continue;
75 }
2d3beede
JGG
76 memcpy(p, nals[i].p_payload, nals[i].i_payload);
77 p += nals[i].i_payload;
6662ec29
MN
78 }
79
80 return p - buf;
81}
82
8a8720c1
DB
83static int X264_frame(AVCodecContext *ctx, uint8_t *buf,
84 int bufsize, void *data)
6662ec29
MN
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
8a8720c1 92 x4->pic.img.i_csp = X264_CSP_I420;
6662ec29
MN
93 x4->pic.img.i_plane = 3;
94
8a8720c1
DB
95 if (frame) {
96 for (i = 0; i < 3; i++) {
97 x4->pic.img.plane[i] = frame->data[i];
67bcc870
MR
98 x4->pic.img.i_stride[i] = frame->linesize[i];
99 }
6662ec29 100
8a8720c1 101 x4->pic.i_pts = frame->pts;
67bcc870 102 x4->pic.i_type = X264_TYPE_AUTO;
84278104 103 }
6662ec29 104
8a8720c1 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);
8a8720c1 109 if (bufsize < 0)
bb270c08 110 return -1;
6662ec29
MN
111
112 /* FIXME: dts */
113 x4->out_pic.pts = pic_out.i_pts;
114
8a8720c1 115 switch (pic_out.i_type) {
6662ec29
MN
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
68c6d60f 129 x4->out_pic.key_frame = pic_out.i_type == X264_TYPE_IDR;
8a8720c1 130 x4->out_pic.quality = (pic_out.i_qpplus1 - 1) * FF_QP2LAMBDA;
6662ec29
MN
131
132 return bufsize;
133}
134
8a8720c1 135static av_cold int X264_close(AVCodecContext *avctx)
6662ec29
MN
136{
137 X264Context *x4 = avctx->priv_data;
138
5c4e9728 139 av_freep(&avctx->extradata);
fe022ce2 140 av_free(x4->sei);
5c4e9728 141
8a8720c1 142 if (x4->enc)
bb270c08 143 x264_encoder_close(x4->enc);
6662ec29
MN
144
145 return 0;
146}
147
8a8720c1 148static av_cold int X264_init(AVCodecContext *avctx)
6662ec29
MN
149{
150 X264Context *x4 = avctx->priv_data;
151
fe022ce2 152 x4->sei_size = 0;
6662ec29
MN
153 x264_param_default(&x4->params);
154
8a8720c1
DB
155 x4->params.pf_log = X264_log;
156 x4->params.p_log_private = avctx;
6662ec29 157
8a8720c1
DB
158 x4->params.i_keyint_max = avctx->gop_size;
159 x4->params.rc.i_bitrate = avctx->bit_rate / 1000;
3f9d3777 160 x4->params.rc.i_vbv_buffer_size = avctx->rc_buffer_size / 1000;
8a8720c1 161 x4->params.rc.i_vbv_max_bitrate = avctx->rc_max_rate / 1000;
2d0cacde 162 x4->params.rc.b_stat_write = !!(avctx->flags & CODEC_FLAG_PASS1);
8a8720c1
DB
163 if (avctx->flags & CODEC_FLAG_PASS2) {
164 x4->params.rc.b_stat_read = 1;
165 } else {
166 if (avctx->crf) {
167 x4->params.rc.i_rc_method = X264_RC_CRF;
9f1c1c99 168 x4->params.rc.f_rf_constant = avctx->crf;
8a8720c1
DB
169 } else if (avctx->cqp > -1) {
170 x4->params.rc.i_rc_method = X264_RC_CQP;
8b75e45d
LM
171 x4->params.rc.i_qp_constant = avctx->cqp;
172 }
58f7833e
RS
173 }
174
175 // if neither crf nor cqp modes are selected we have to enable the RC
176 // we do it this way because we cannot check if the bitrate has been set
8a8720c1
DB
177 if (!(avctx->crf || (avctx->cqp > -1)))
178 x4->params.rc.i_rc_method = X264_RC_ABR;
58f7833e 179
8a8720c1
DB
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;
8a8720c1 183 x4->params.i_bframe_bias = avctx->bframebias;
19538981 184 x4->params.i_bframe_pyramid = avctx->flags2 & CODEC_FLAG2_BPYRAMID ? X264_B_PYRAMID_NORMAL : X264_B_PYRAMID_NONE;
8a8720c1 185 avctx->has_b_frames = avctx->flags2 & CODEC_FLAG2_BPYRAMID ? 2 : !!avctx->max_b_frames;
58f7833e
RS
186
187 x4->params.i_keyint_min = avctx->keyint_min;
8a8720c1 188 if (x4->params.i_keyint_min > x4->params.i_keyint_max)
58f7833e
RS
189 x4->params.i_keyint_min = x4->params.i_keyint_max;
190
8a8720c1 191 x4->params.i_scenecut_threshold = avctx->scenechange_threshold;
58f7833e 192
2d0cacde 193 x4->params.b_deblocking_filter = !!(avctx->flags & CODEC_FLAG_LOOP_FILTER);
58f7833e 194 x4->params.i_deblocking_filter_alphac0 = avctx->deblockalpha;
8a8720c1 195 x4->params.i_deblocking_filter_beta = avctx->deblockbeta;
f9791751 196
8a8720c1
DB
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;
6662ec29 200
8a8720c1
DB
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
8a8720c1 205 x4->params.i_frame_reference = avctx->refs;
68c6d60f 206
8a8720c1
DB
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;
211 x4->params.i_fps_num = avctx->time_base.den;
212 x4->params.i_fps_den = avctx->time_base.num;
6662ec29 213
8a8720c1
DB
214 x4->params.analyse.inter = 0;
215 if (avctx->partitions) {
216 if (avctx->partitions & X264_PART_I4X4)
58f7833e 217 x4->params.analyse.inter |= X264_ANALYSE_I4x4;
8a8720c1 218 if (avctx->partitions & X264_PART_I8X8)
58f7833e 219 x4->params.analyse.inter |= X264_ANALYSE_I8x8;
8a8720c1 220 if (avctx->partitions & X264_PART_P8X8)
58f7833e 221 x4->params.analyse.inter |= X264_ANALYSE_PSUB16x16;
8a8720c1 222 if (avctx->partitions & X264_PART_P4X4)
58f7833e 223 x4->params.analyse.inter |= X264_ANALYSE_PSUB8x8;
8a8720c1 224 if (avctx->partitions & X264_PART_B8X8)
58f7833e
RS
225 x4->params.analyse.inter |= X264_ANALYSE_BSUB16x16;
226 }
227
8a8720c1 228 x4->params.analyse.i_direct_mv_pred = avctx->directpred;
58f7833e 229
2d0cacde 230 x4->params.analyse.b_weighted_bipred = !!(avctx->flags2 & CODEC_FLAG2_WPRED);
096c87f6 231 x4->params.analyse.i_weighted_pred = avctx->weighted_p_pred;
58f7833e 232
8a8720c1 233 if (avctx->me_method == ME_EPZS)
58f7833e 234 x4->params.analyse.i_me_method = X264_ME_DIA;
8a8720c1 235 else if (avctx->me_method == ME_HEX)
58f7833e 236 x4->params.analyse.i_me_method = X264_ME_HEX;
8a8720c1 237 else if (avctx->me_method == ME_UMH)
58f7833e 238 x4->params.analyse.i_me_method = X264_ME_UMH;
8a8720c1 239 else if (avctx->me_method == ME_FULL)
58f7833e 240 x4->params.analyse.i_me_method = X264_ME_ESA;
8a8720c1 241 else if (avctx->me_method == ME_TESA)
89223ef6 242 x4->params.analyse.i_me_method = X264_ME_TESA;
58f7833e
RS
243 else x4->params.analyse.i_me_method = X264_ME_HEX;
244
8a8720c1
DB
245 x4->params.analyse.i_me_range = avctx->me_range;
246 x4->params.analyse.i_subpel_refine = avctx->me_subpel_quality;
58f7833e 247
2d0cacde
JGG
248 x4->params.analyse.b_mixed_references = !!(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);
58f7833e 252
8a8720c1
DB
253 x4->params.analyse.i_trellis = avctx->trellis;
254 x4->params.analyse.i_noise_reduction = avctx->noise_reduction;
58f7833e 255
8a8720c1
DB
256 if (avctx->level > 0)
257 x4->params.i_level_idc = avctx->level;
58f7833e 258
4f59b684 259 x4->params.rc.f_rate_tolerance =
58f7833e
RS
260 (float)avctx->bit_rate_tolerance/avctx->bit_rate;
261
8a8720c1
DB
262 if ((avctx->rc_buffer_size != 0) &&
263 (avctx->rc_initial_buffer_occupancy <= avctx->rc_buffer_size)) {
58f7833e 264 x4->params.rc.f_vbv_buffer_init =
8a8720c1
DB
265 (float)avctx->rc_initial_buffer_occupancy / avctx->rc_buffer_size;
266 } else
267 x4->params.rc.f_vbv_buffer_init = 0.9;
58f7833e 268
25a42948 269 x4->params.rc.b_mb_tree = !!(avctx->flags2 & CODEC_FLAG2_MBTREE);
8a8720c1
DB
270 x4->params.rc.f_ip_factor = 1 / fabs(avctx->i_quant_factor);
271 x4->params.rc.f_pb_factor = avctx->b_quant_factor;
58f7833e 272 x4->params.analyse.i_chroma_qp_offset = avctx->chromaoffset;
58f7833e 273
2d0cacde 274 x4->params.analyse.b_psnr = !!(avctx->flags & CODEC_FLAG_PSNR);
8a8720c1 275 x4->params.i_log_level = X264_LOG_DEBUG;
58f7833e 276
2d0cacde 277 x4->params.b_aud = !!(avctx->flags2 & CODEC_FLAG2_AUD);
58f7833e 278
8a8720c1 279 x4->params.i_threads = avctx->thread_count;
568d4b81 280
2d0cacde 281 x4->params.b_interlaced = !!(avctx->flags & CODEC_FLAG_INTERLACED_DCT);
d9e5c9b7 282
8a8720c1 283 if (avctx->flags & CODEC_FLAG_GLOBAL_HEADER)
806011f2 284 x4->params.b_repeat_headers = 0;
806011f2 285
6662ec29 286 x4->enc = x264_encoder_open(&x4->params);
8a8720c1 287 if (!x4->enc)
6662ec29
MN
288 return -1;
289
290 avctx->coded_frame = &x4->out_pic;
291
8a8720c1 292 if (avctx->flags & CODEC_FLAG_GLOBAL_HEADER) {
4f59b684 293 x264_nal_t *nal;
2d3beede 294 int nnal, s;
806011f2 295
2d3beede 296 s = x264_encoder_headers(x4->enc, &nal, &nnal);
806011f2 297
8a8720c1 298 avctx->extradata = av_malloc(s);
fe022ce2 299 avctx->extradata_size = encode_nals(avctx, avctx->extradata, s, nal, nnal, 1);
806011f2
MR
300 }
301
6662ec29
MN
302 return 0;
303}
304
1cc60c47 305AVCodec libx264_encoder = {
8a8720c1
DB
306 .name = "libx264",
307 .type = CODEC_TYPE_VIDEO,
308 .id = CODEC_ID_H264,
6662ec29 309 .priv_data_size = sizeof(X264Context),
8a8720c1
DB
310 .init = X264_init,
311 .encode = X264_frame,
312 .close = X264_close,
313 .capabilities = CODEC_CAP_DELAY,
314 .pix_fmts = (const enum PixelFormat[]) { PIX_FMT_YUV420P, PIX_FMT_NONE },
315 .long_name = NULL_IF_CONFIG_SMALL("libx264 H.264 / AVC / MPEG-4 AVC / MPEG-4 part 10"),
6662ec29 316};