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 {
58 static void XAVS_log(void *p, int level, const char *fmt, va_list args)
60 static const int level_map[] = {
61 [XAVS_LOG_ERROR] = AV_LOG_ERROR,
62 [XAVS_LOG_WARNING] = AV_LOG_WARNING,
63 [XAVS_LOG_INFO] = AV_LOG_INFO,
64 [XAVS_LOG_DEBUG] = AV_LOG_DEBUG
67 if (level < 0 || level > XAVS_LOG_DEBUG)
70 av_vlog(p, level_map[level], fmt, args);
73 static int encode_nals(AVCodecContext *ctx, uint8_t *buf,
74 int size, xavs_nal_t *nals,
75 int nnal, int skip_sei)
77 XavsContext *x4 = ctx->priv_data;
81 /* Write the SEI as part of the first frame. */
82 if (x4->sei_size > 0 && nnal > 0) {
83 memcpy(p, x4->sei, x4->sei_size);
88 for (i = 0; i < nnal; i++) {
89 s = xavs_nal_encode(p, &size, 1, nals + i);
98 static int XAVS_frame(AVCodecContext *ctx, uint8_t *buf,
99 int bufsize, void *data)
101 XavsContext *x4 = ctx->priv_data;
102 AVFrame *frame = data;
105 xavs_picture_t pic_out;
107 x4->pic.img.i_csp = XAVS_CSP_I420;
108 x4->pic.img.i_plane = 3;
111 for (i = 0; i < 3; i++) {
112 x4->pic.img.plane[i] = frame->data[i];
113 x4->pic.img.i_stride[i] = frame->linesize[i];
116 x4->pic.i_pts = frame->pts;
117 x4->pic.i_type = XAVS_TYPE_AUTO;
120 if (xavs_encoder_encode(x4->enc, &nal, &nnal,
121 frame? &x4->pic: NULL, &pic_out) < 0)
124 bufsize = encode_nals(ctx, buf, bufsize, nal, nnal, 0);
129 if (!bufsize && !frame && !(x4->end_of_stream)){
131 buf[bufsize+1] = 0x0;
132 buf[bufsize+2] = 0x01;
133 buf[bufsize+3] = 0xb1;
135 x4->end_of_stream = END_OF_STREAM;
138 /* FIXME: libxavs now provides DTS */
139 /* but AVFrame doesn't have a field for it. */
140 x4->out_pic.pts = pic_out.i_pts;
142 switch (pic_out.i_type) {
145 x4->out_pic.pict_type = AV_PICTURE_TYPE_I;
148 x4->out_pic.pict_type = AV_PICTURE_TYPE_P;
152 x4->out_pic.pict_type = AV_PICTURE_TYPE_B;
156 /* There is no IDR frame in AVS JiZhun */
157 /* Sequence header is used as a flag */
158 x4->out_pic.key_frame = pic_out.i_type == XAVS_TYPE_I;
160 x4->out_pic.quality = (pic_out.i_qpplus1 - 1) * FF_QP2LAMBDA;
165 static av_cold int XAVS_close(AVCodecContext *avctx)
167 XavsContext *x4 = avctx->priv_data;
169 av_freep(&avctx->extradata);
173 xavs_encoder_close(x4->enc);
178 static av_cold int XAVS_init(AVCodecContext *avctx)
180 XavsContext *x4 = avctx->priv_data;
183 xavs_param_default(&x4->params);
185 x4->params.pf_log = XAVS_log;
186 x4->params.p_log_private = avctx;
187 x4->params.i_keyint_max = avctx->gop_size;
188 if (avctx->bit_rate) {
189 x4->params.rc.i_bitrate = avctx->bit_rate / 1000;
190 x4->params.rc.i_rc_method = XAVS_RC_ABR;
192 x4->params.rc.i_vbv_buffer_size = avctx->rc_buffer_size / 1000;
193 x4->params.rc.i_vbv_max_bitrate = avctx->rc_max_rate / 1000;
194 x4->params.rc.b_stat_write = avctx->flags & CODEC_FLAG_PASS1;
195 if (avctx->flags & CODEC_FLAG_PASS2) {
196 x4->params.rc.b_stat_read = 1;
199 x4->params.rc.i_rc_method = XAVS_RC_CRF;
200 x4->params.rc.f_rf_constant = x4->crf;
201 } else if (x4->cqp >= 0) {
202 x4->params.rc.i_rc_method = XAVS_RC_CQP;
203 x4->params.rc.i_qp_constant = x4->cqp;
208 x4->params.b_aud = x4->aud;
210 x4->params.rc.b_mb_tree = x4->mbtree;
211 if (x4->direct_pred >= 0)
212 x4->params.analyse.i_direct_mv_pred = x4->direct_pred;
213 if (x4->fast_pskip >= 0)
214 x4->params.analyse.b_fast_pskip = x4->fast_pskip;
215 if (x4->mixed_refs >= 0)
216 x4->params.analyse.b_mixed_references = x4->mixed_refs;
217 if (x4->b_bias != INT_MIN)
218 x4->params.i_bframe_bias = x4->b_bias;
219 if (x4->cplxblur >= 0)
220 x4->params.rc.f_complexity_blur = x4->cplxblur;
222 x4->params.i_bframe = avctx->max_b_frames;
223 /* cabac is not included in AVS JiZhun Profile */
224 x4->params.b_cabac = 0;
226 x4->params.i_bframe_adaptive = avctx->b_frame_strategy;
228 avctx->has_b_frames = !!avctx->max_b_frames;
230 /* AVS doesn't allow B picture as reference */
231 /* The max allowed reference frame number of B is 2 */
232 x4->params.i_keyint_min = avctx->keyint_min;
233 if (x4->params.i_keyint_min > x4->params.i_keyint_max)
234 x4->params.i_keyint_min = x4->params.i_keyint_max;
236 x4->params.i_scenecut_threshold = avctx->scenechange_threshold;
238 // x4->params.b_deblocking_filter = avctx->flags & CODEC_FLAG_LOOP_FILTER;
240 x4->params.rc.i_qp_min = avctx->qmin;
241 x4->params.rc.i_qp_max = avctx->qmax;
242 x4->params.rc.i_qp_step = avctx->max_qdiff;
244 x4->params.rc.f_qcompress = avctx->qcompress; /* 0.0 => cbr, 1.0 => constant qp */
245 x4->params.rc.f_qblur = avctx->qblur; /* temporally blur quants */
247 x4->params.i_frame_reference = avctx->refs;
249 x4->params.i_width = avctx->width;
250 x4->params.i_height = avctx->height;
251 x4->params.vui.i_sar_width = avctx->sample_aspect_ratio.num;
252 x4->params.vui.i_sar_height = avctx->sample_aspect_ratio.den;
253 /* This is only used for counting the fps */
254 x4->params.i_fps_num = avctx->time_base.den;
255 x4->params.i_fps_den = avctx->time_base.num;
256 x4->params.analyse.inter = XAVS_ANALYSE_I8x8 |XAVS_ANALYSE_PSUB16x16| XAVS_ANALYSE_BSUB16x16;
258 switch (avctx->me_method) {
260 x4->params.analyse.i_me_method = XAVS_ME_DIA;
263 x4->params.analyse.i_me_method = XAVS_ME_HEX;
266 x4->params.analyse.i_me_method = XAVS_ME_UMH;
269 x4->params.analyse.i_me_method = XAVS_ME_ESA;
272 x4->params.analyse.i_me_method = XAVS_ME_TESA;
275 x4->params.analyse.i_me_method = XAVS_ME_HEX;
278 x4->params.analyse.i_me_range = avctx->me_range;
279 x4->params.analyse.i_subpel_refine = avctx->me_subpel_quality;
281 x4->params.analyse.b_chroma_me = avctx->me_cmp & FF_CMP_CHROMA;
282 /* AVS P2 only enables 8x8 transform */
283 x4->params.analyse.b_transform_8x8 = 1; //avctx->flags2 & CODEC_FLAG2_8X8DCT;
285 x4->params.analyse.i_trellis = avctx->trellis;
286 x4->params.analyse.i_noise_reduction = avctx->noise_reduction;
288 if (avctx->level > 0)
289 x4->params.i_level_idc = avctx->level;
291 x4->params.rc.f_rate_tolerance =
292 (float)avctx->bit_rate_tolerance/avctx->bit_rate;
294 if ((avctx->rc_buffer_size) &&
295 (avctx->rc_initial_buffer_occupancy <= avctx->rc_buffer_size)) {
296 x4->params.rc.f_vbv_buffer_init =
297 (float)avctx->rc_initial_buffer_occupancy / avctx->rc_buffer_size;
299 x4->params.rc.f_vbv_buffer_init = 0.9;
301 /* TAG:do we have MB tree RC method */
302 /* what is the RC method we are now using? Default NO */
303 x4->params.rc.f_ip_factor = 1 / fabs(avctx->i_quant_factor);
304 x4->params.rc.f_pb_factor = avctx->b_quant_factor;
305 x4->params.analyse.i_chroma_qp_offset = avctx->chromaoffset;
307 x4->params.analyse.b_psnr = avctx->flags & CODEC_FLAG_PSNR;
308 x4->params.i_log_level = XAVS_LOG_DEBUG;
309 x4->params.i_threads = avctx->thread_count;
310 x4->params.b_interlaced = avctx->flags & CODEC_FLAG_INTERLACED_DCT;
312 if (avctx->flags & CODEC_FLAG_GLOBAL_HEADER)
313 x4->params.b_repeat_headers = 0;
315 x4->enc = xavs_encoder_open(&x4->params);
319 avctx->coded_frame = &x4->out_pic;
320 /* TAG: Do we have GLOBAL HEADER in AVS */
321 /* We Have PPS and SPS in AVS */
322 if (avctx->flags & CODEC_FLAG_GLOBAL_HEADER) {
324 int nnal, s, i, size;
327 s = xavs_encoder_headers(x4->enc, &nal, &nnal);
329 avctx->extradata = p = av_malloc(s);
330 for (i = 0; i < nnal; i++) {
331 /* Don't put the SEI in extradata. */
332 if (nal[i].i_type == NAL_SEI) {
333 x4->sei = av_malloc( 5 + nal[i].i_payload * 4 / 3 );
334 if (xavs_nal_encode(x4->sei, &x4->sei_size, 1, nal + i) < 0)
339 size = xavs_nal_encode(p, &s, 1, nal + i);
344 avctx->extradata_size = p - avctx->extradata;
349 #define OFFSET(x) offsetof(XavsContext, x)
350 #define VE AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_ENCODING_PARAM
351 static const AVOption options[] = {
352 { "crf", "Select the quality for constant quality mode", OFFSET(crf), AV_OPT_TYPE_FLOAT, {-1 }, -1, FLT_MAX, VE },
353 { "qp", "Constant quantization parameter rate control method",OFFSET(cqp), AV_OPT_TYPE_INT, {-1 }, -1, INT_MAX, VE },
354 { "b-bias", "Influences how often B-frames are used", OFFSET(b_bias), AV_OPT_TYPE_INT, {INT_MIN}, INT_MIN, INT_MAX, VE },
355 { "cplxblur", "Reduce fluctuations in QP (before curve compression)", OFFSET(cplxblur), AV_OPT_TYPE_FLOAT, {-1 }, -1, FLT_MAX, VE},
356 { "direct-pred", "Direct MV prediction mode", OFFSET(direct_pred), AV_OPT_TYPE_INT, {-1 }, -1, INT_MAX, VE, "direct-pred" },
357 { "none", NULL, 0, AV_OPT_TYPE_CONST, { XAVS_DIRECT_PRED_NONE }, 0, 0, VE, "direct-pred" },
358 { "spatial", NULL, 0, AV_OPT_TYPE_CONST, { XAVS_DIRECT_PRED_SPATIAL }, 0, 0, VE, "direct-pred" },
359 { "temporal", NULL, 0, AV_OPT_TYPE_CONST, { XAVS_DIRECT_PRED_TEMPORAL }, 0, 0, VE, "direct-pred" },
360 { "auto", NULL, 0, AV_OPT_TYPE_CONST, { XAVS_DIRECT_PRED_AUTO }, 0, 0, VE, "direct-pred" },
361 { "aud", "Use access unit delimiters.", OFFSET(aud), AV_OPT_TYPE_INT, {-1 }, -1, 1, VE},
362 { "mbtree", "Use macroblock tree ratecontrol.", OFFSET(mbtree), AV_OPT_TYPE_INT, {-1 }, -1, 1, VE},
363 { "mixed-refs", "One reference per partition, as opposed to one reference per macroblock", OFFSET(mixed_refs), AV_OPT_TYPE_INT, {-1}, -1, 1, VE },
364 { "fast-pskip", NULL, OFFSET(fast_pskip), AV_OPT_TYPE_INT, {-1 }, -1, 1, VE},
368 static const AVClass class = {
369 .class_name = "libxavs",
370 .item_name = av_default_item_name,
372 .version = LIBAVUTIL_VERSION_INT,
375 static const AVCodecDefault xavs_defaults[] = {
380 AVCodec ff_libxavs_encoder = {
382 .type = AVMEDIA_TYPE_VIDEO,
384 .priv_data_size = sizeof(XavsContext),
386 .encode = XAVS_frame,
388 .capabilities = CODEC_CAP_DELAY | CODEC_CAP_AUTO_THREADS,
389 .pix_fmts = (const enum PixelFormat[]) { PIX_FMT_YUV420P, PIX_FMT_NONE },
390 .long_name = NULL_IF_CONFIG_SMALL("libxavs - the Chinese Audio Video Standard Encoder"),
391 .priv_class = &class,
392 .defaults = xavs_defaults,