2 * AVS encoding using the xavs library
3 * Copyright (C) 2010 Amanda, Y.N. Wu <amanda11192003@gmail.com>
5 * This file is part of Libav.
7 * Libav is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU Lesser General Public
9 * License as published by the Free Software Foundation; either
10 * version 2.1 of the License, or (at your option) any later version.
12 * Libav is distributed in the hope that it will be useful,
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.
17 * You should have received a copy of the GNU Lesser General Public
18 * License along with Libav; if not, write to the Free Software
19 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
31 #include "libavutil/opt.h"
33 #define END_OF_STREAM 0x001
35 #define XAVS_PART_I8X8 0x002 /* Analyze i8x8 (requires 8x8 transform) */
36 #define XAVS_PART_P8X8 0x010 /* Analyze p16x8, p8x16 and p8x8 */
37 #define XAVS_PART_B8X8 0x100 /* Analyze b16x8, b*/
39 typedef struct XavsContext {
59 static void XAVS_log(void *p, int level, const char *fmt, va_list args)
61 static const int level_map[] = {
62 [XAVS_LOG_ERROR] = AV_LOG_ERROR,
63 [XAVS_LOG_WARNING] = AV_LOG_WARNING,
64 [XAVS_LOG_INFO] = AV_LOG_INFO,
65 [XAVS_LOG_DEBUG] = AV_LOG_DEBUG
68 if (level < 0 || level > XAVS_LOG_DEBUG)
71 av_vlog(p, level_map[level], fmt, args);
74 static int encode_nals(AVCodecContext *ctx, uint8_t *buf,
75 int size, xavs_nal_t *nals,
76 int nnal, int skip_sei)
78 XavsContext *x4 = ctx->priv_data;
82 /* Write the SEI as part of the first frame. */
83 if (x4->sei_size > 0 && nnal > 0) {
84 memcpy(p, x4->sei, x4->sei_size);
89 for (i = 0; i < nnal; i++) {
90 s = xavs_nal_encode(p, &size, 1, nals + i);
99 static int XAVS_frame(AVCodecContext *ctx, uint8_t *buf,
100 int bufsize, void *data)
102 XavsContext *x4 = ctx->priv_data;
103 AVFrame *frame = data;
106 xavs_picture_t pic_out;
108 x4->pic.img.i_csp = XAVS_CSP_I420;
109 x4->pic.img.i_plane = 3;
112 for (i = 0; i < 3; i++) {
113 x4->pic.img.plane[i] = frame->data[i];
114 x4->pic.img.i_stride[i] = frame->linesize[i];
117 x4->pic.i_pts = frame->pts;
118 x4->pic.i_type = XAVS_TYPE_AUTO;
121 if (xavs_encoder_encode(x4->enc, &nal, &nnal,
122 frame? &x4->pic: NULL, &pic_out) < 0)
125 bufsize = encode_nals(ctx, buf, bufsize, nal, nnal, 0);
130 if (!bufsize && !frame && !(x4->end_of_stream)){
132 buf[bufsize+1] = 0x0;
133 buf[bufsize+2] = 0x01;
134 buf[bufsize+3] = 0xb1;
136 x4->end_of_stream = END_OF_STREAM;
139 /* FIXME: libxavs now provides DTS */
140 /* but AVFrame doesn't have a field for it. */
141 x4->out_pic.pts = pic_out.i_pts;
143 switch (pic_out.i_type) {
146 x4->out_pic.pict_type = AV_PICTURE_TYPE_I;
149 x4->out_pic.pict_type = AV_PICTURE_TYPE_P;
153 x4->out_pic.pict_type = AV_PICTURE_TYPE_B;
157 /* There is no IDR frame in AVS JiZhun */
158 /* Sequence header is used as a flag */
159 x4->out_pic.key_frame = pic_out.i_type == XAVS_TYPE_I;
161 x4->out_pic.quality = (pic_out.i_qpplus1 - 1) * FF_QP2LAMBDA;
166 static av_cold int XAVS_close(AVCodecContext *avctx)
168 XavsContext *x4 = avctx->priv_data;
170 av_freep(&avctx->extradata);
174 xavs_encoder_close(x4->enc);
179 static av_cold int XAVS_init(AVCodecContext *avctx)
181 XavsContext *x4 = avctx->priv_data;
184 xavs_param_default(&x4->params);
186 x4->params.pf_log = XAVS_log;
187 x4->params.p_log_private = avctx;
188 x4->params.i_keyint_max = avctx->gop_size;
189 if (avctx->bit_rate) {
190 x4->params.rc.i_bitrate = avctx->bit_rate / 1000;
191 x4->params.rc.i_rc_method = XAVS_RC_ABR;
193 x4->params.rc.i_vbv_buffer_size = avctx->rc_buffer_size / 1000;
194 x4->params.rc.i_vbv_max_bitrate = avctx->rc_max_rate / 1000;
195 x4->params.rc.b_stat_write = avctx->flags & CODEC_FLAG_PASS1;
196 if (avctx->flags & CODEC_FLAG_PASS2) {
197 x4->params.rc.b_stat_read = 1;
200 x4->params.rc.i_rc_method = XAVS_RC_CRF;
201 x4->params.rc.f_rf_constant = x4->crf;
202 } else if (x4->cqp >= 0) {
203 x4->params.rc.i_rc_method = XAVS_RC_CQP;
204 x4->params.rc.i_qp_constant = x4->cqp;
209 x4->params.b_aud = x4->aud;
211 x4->params.rc.b_mb_tree = x4->mbtree;
212 if (x4->direct_pred >= 0)
213 x4->params.analyse.i_direct_mv_pred = x4->direct_pred;
214 if (x4->fast_pskip >= 0)
215 x4->params.analyse.b_fast_pskip = x4->fast_pskip;
216 if (x4->mixed_refs >= 0)
217 x4->params.analyse.b_mixed_references = x4->mixed_refs;
218 if (x4->b_bias != INT_MIN)
219 x4->params.i_bframe_bias = x4->b_bias;
220 if (x4->cplxblur >= 0)
221 x4->params.rc.f_complexity_blur = x4->cplxblur;
223 x4->params.i_bframe = avctx->max_b_frames;
224 /* cabac is not included in AVS JiZhun Profile */
225 x4->params.b_cabac = 0;
227 x4->params.i_bframe_adaptive = avctx->b_frame_strategy;
229 avctx->has_b_frames = !!avctx->max_b_frames;
231 /* AVS doesn't allow B picture as reference */
232 /* The max allowed reference frame number of B is 2 */
233 x4->params.i_keyint_min = avctx->keyint_min;
234 if (x4->params.i_keyint_min > x4->params.i_keyint_max)
235 x4->params.i_keyint_min = x4->params.i_keyint_max;
237 x4->params.i_scenecut_threshold = avctx->scenechange_threshold;
239 // x4->params.b_deblocking_filter = avctx->flags & CODEC_FLAG_LOOP_FILTER;
241 x4->params.rc.i_qp_min = avctx->qmin;
242 x4->params.rc.i_qp_max = avctx->qmax;
243 x4->params.rc.i_qp_step = avctx->max_qdiff;
245 x4->params.rc.f_qcompress = avctx->qcompress; /* 0.0 => cbr, 1.0 => constant qp */
246 x4->params.rc.f_qblur = avctx->qblur; /* temporally blur quants */
248 x4->params.i_frame_reference = avctx->refs;
250 x4->params.i_width = avctx->width;
251 x4->params.i_height = avctx->height;
252 x4->params.vui.i_sar_width = avctx->sample_aspect_ratio.num;
253 x4->params.vui.i_sar_height = avctx->sample_aspect_ratio.den;
254 /* This is only used for counting the fps */
255 x4->params.i_fps_num = avctx->time_base.den;
256 x4->params.i_fps_den = avctx->time_base.num;
257 x4->params.analyse.inter = XAVS_ANALYSE_I8x8 |XAVS_ANALYSE_PSUB16x16| XAVS_ANALYSE_BSUB16x16;
259 switch (avctx->me_method) {
261 x4->params.analyse.i_me_method = XAVS_ME_DIA;
264 x4->params.analyse.i_me_method = XAVS_ME_HEX;
267 x4->params.analyse.i_me_method = XAVS_ME_UMH;
270 x4->params.analyse.i_me_method = XAVS_ME_ESA;
273 x4->params.analyse.i_me_method = XAVS_ME_TESA;
276 x4->params.analyse.i_me_method = XAVS_ME_HEX;
279 x4->params.analyse.i_me_range = avctx->me_range;
280 x4->params.analyse.i_subpel_refine = avctx->me_subpel_quality;
282 x4->params.analyse.b_chroma_me = avctx->me_cmp & FF_CMP_CHROMA;
283 /* AVS P2 only enables 8x8 transform */
284 x4->params.analyse.b_transform_8x8 = 1; //avctx->flags2 & CODEC_FLAG2_8X8DCT;
286 x4->params.analyse.i_trellis = avctx->trellis;
287 x4->params.analyse.i_noise_reduction = avctx->noise_reduction;
289 if (avctx->level > 0)
290 x4->params.i_level_idc = avctx->level;
292 x4->params.rc.f_rate_tolerance =
293 (float)avctx->bit_rate_tolerance/avctx->bit_rate;
295 if ((avctx->rc_buffer_size) &&
296 (avctx->rc_initial_buffer_occupancy <= avctx->rc_buffer_size)) {
297 x4->params.rc.f_vbv_buffer_init =
298 (float)avctx->rc_initial_buffer_occupancy / avctx->rc_buffer_size;
300 x4->params.rc.f_vbv_buffer_init = 0.9;
302 /* TAG:do we have MB tree RC method */
303 /* what is the RC method we are now using? Default NO */
304 x4->params.rc.f_ip_factor = 1 / fabs(avctx->i_quant_factor);
305 x4->params.rc.f_pb_factor = avctx->b_quant_factor;
306 x4->params.analyse.i_chroma_qp_offset = avctx->chromaoffset;
308 x4->params.analyse.b_psnr = avctx->flags & CODEC_FLAG_PSNR;
309 x4->params.i_log_level = XAVS_LOG_DEBUG;
310 x4->params.i_threads = avctx->thread_count;
311 x4->params.b_interlaced = avctx->flags & CODEC_FLAG_INTERLACED_DCT;
313 if (avctx->flags & CODEC_FLAG_GLOBAL_HEADER)
314 x4->params.b_repeat_headers = 0;
316 x4->enc = xavs_encoder_open(&x4->params);
320 avctx->coded_frame = &x4->out_pic;
321 /* TAG: Do we have GLOBAL HEADER in AVS */
322 /* We Have PPS and SPS in AVS */
323 if (avctx->flags & CODEC_FLAG_GLOBAL_HEADER) {
325 int nnal, s, i, size;
328 s = xavs_encoder_headers(x4->enc, &nal, &nnal);
330 avctx->extradata = p = av_malloc(s);
331 for (i = 0; i < nnal; i++) {
332 /* Don't put the SEI in extradata. */
333 if (nal[i].i_type == NAL_SEI) {
334 x4->sei = av_malloc( 5 + nal[i].i_payload * 4 / 3 );
335 if (xavs_nal_encode(x4->sei, &x4->sei_size, 1, nal + i) < 0)
340 size = xavs_nal_encode(p, &s, 1, nal + i);
345 avctx->extradata_size = p - avctx->extradata;
350 #define OFFSET(x) offsetof(XavsContext, x)
351 #define VE AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_ENCODING_PARAM
352 static const AVOption options[] = {
353 { "crf", "Select the quality for constant quality mode", OFFSET(crf), AV_OPT_TYPE_FLOAT, {-1 }, -1, FLT_MAX, VE },
354 { "qp", "Constant quantization parameter rate control method",OFFSET(cqp), AV_OPT_TYPE_INT, {-1 }, -1, INT_MAX, VE },
355 { "b-bias", "Influences how often B-frames are used", OFFSET(b_bias), AV_OPT_TYPE_INT, {INT_MIN}, INT_MIN, INT_MAX, VE },
356 { "cplxblur", "Reduce fluctuations in QP (before curve compression)", OFFSET(cplxblur), AV_OPT_TYPE_FLOAT, {-1 }, -1, FLT_MAX, VE},
357 { "direct-pred", "Direct MV prediction mode", OFFSET(direct_pred), AV_OPT_TYPE_INT, {-1 }, -1, INT_MAX, VE, "direct-pred" },
358 { "none", NULL, 0, AV_OPT_TYPE_CONST, { XAVS_DIRECT_PRED_NONE }, 0, 0, VE, "direct-pred" },
359 { "spatial", NULL, 0, AV_OPT_TYPE_CONST, { XAVS_DIRECT_PRED_SPATIAL }, 0, 0, VE, "direct-pred" },
360 { "temporal", NULL, 0, AV_OPT_TYPE_CONST, { XAVS_DIRECT_PRED_TEMPORAL }, 0, 0, VE, "direct-pred" },
361 { "auto", NULL, 0, AV_OPT_TYPE_CONST, { XAVS_DIRECT_PRED_AUTO }, 0, 0, VE, "direct-pred" },
362 { "aud", "Use access unit delimiters.", OFFSET(aud), AV_OPT_TYPE_INT, {-1 }, -1, 1, VE},
363 { "mbtree", "Use macroblock tree ratecontrol.", OFFSET(mbtree), AV_OPT_TYPE_INT, {-1 }, -1, 1, VE},
364 { "mixed-refs", "One reference per partition, as opposed to one reference per macroblock", OFFSET(mixed_refs), AV_OPT_TYPE_INT, {-1}, -1, 1, VE },
365 { "fast-pskip", NULL, OFFSET(fast_pskip), AV_OPT_TYPE_INT, {-1 }, -1, 1, VE},
369 static const AVClass class = {
370 .class_name = "libxavs",
371 .item_name = av_default_item_name,
373 .version = LIBAVUTIL_VERSION_INT,
376 static const AVCodecDefault xavs_defaults[] = {
381 AVCodec ff_libxavs_encoder = {
383 .type = AVMEDIA_TYPE_VIDEO,
385 .priv_data_size = sizeof(XavsContext),
387 .encode = XAVS_frame,
389 .capabilities = CODEC_CAP_DELAY | CODEC_CAP_AUTO_THREADS,
390 .pix_fmts = (const enum PixelFormat[]) { PIX_FMT_YUV420P, PIX_FMT_NONE },
391 .long_name = NULL_IF_CONFIG_SMALL("libxavs - the Chinese Audio Video Standard Encoder"),
392 .priv_class = &class,
393 .defaults = xavs_defaults,