2 * AVS encoding using the xavs library
3 * Copyright (C) 2010 Amanda, Y.N. Wu <amanda11192003@gmail.com>
5 * This file is part of FFmpeg.
7 * FFmpeg 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 * FFmpeg 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 FFmpeg; if not, write to the Free Software
19 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
30 #define END_OF_STREAM 0x001
32 #define XAVS_PART_I8X8 0x002 /* Analyze i8x8 (requires 8x8 transform) */
33 #define XAVS_PART_P8X8 0x010 /* Analyze p16x8, p8x16 and p8x8 */
34 #define XAVS_PART_B8X8 0x100 /* Analyze b16x8, b*/
36 typedef struct XavsContext {
46 static void XAVS_log(void *p, int level, const char *fmt, va_list args)
48 static const int level_map[] = {
49 [XAVS_LOG_ERROR] = AV_LOG_ERROR,
50 [XAVS_LOG_WARNING] = AV_LOG_WARNING,
51 [XAVS_LOG_INFO] = AV_LOG_INFO,
52 [XAVS_LOG_DEBUG] = AV_LOG_DEBUG
55 if (level < 0 || level > XAVS_LOG_DEBUG)
58 av_vlog(p, level_map[level], fmt, args);
61 static int encode_nals(AVCodecContext *ctx, uint8_t *buf,
62 int size, xavs_nal_t *nals,
63 int nnal, int skip_sei)
65 XavsContext *x4 = ctx->priv_data;
69 /* Write the SEI as part of the first frame. */
70 if (x4->sei_size > 0 && nnal > 0) {
71 memcpy(p, x4->sei, x4->sei_size);
76 for (i = 0; i < nnal; i++) {
77 /* Don't put the SEI in extradata. */
78 if (skip_sei && nals[i].i_type == NAL_SEI) {
79 x4->sei = av_malloc( 5 + nals[i].i_payload * 4 / 3 );
80 if (xavs_nal_encode(x4->sei, &x4->sei_size, 1, nals + i) < 0)
85 s = xavs_nal_encode(p, &size, 1, nals + i);
94 static int XAVS_frame(AVCodecContext *ctx, uint8_t *buf,
95 int bufsize, void *data)
97 XavsContext *x4 = ctx->priv_data;
98 AVFrame *frame = data;
101 xavs_picture_t pic_out;
103 x4->pic.img.i_csp = XAVS_CSP_I420;
104 x4->pic.img.i_plane = 3;
107 for (i = 0; i < 3; i++) {
108 x4->pic.img.plane[i] = frame->data[i];
109 x4->pic.img.i_stride[i] = frame->linesize[i];
112 x4->pic.i_pts = frame->pts;
113 x4->pic.i_type = XAVS_TYPE_AUTO;
116 if (xavs_encoder_encode(x4->enc, &nal, &nnal,
117 frame? &x4->pic: NULL, &pic_out) < 0)
120 bufsize = encode_nals(ctx, buf, bufsize, nal, nnal, 0);
125 if (!bufsize && !frame && !(x4->end_of_stream)){
127 buf[bufsize+1] = 0x0;
128 buf[bufsize+2] = 0x01;
129 buf[bufsize+3] = 0xb1;
131 x4->end_of_stream = END_OF_STREAM;
134 /* FIXME: libxavs now provides DTS */
135 /* but AVFrame doesn't have a field for it. */
136 x4->out_pic.pts = pic_out.i_pts;
138 switch (pic_out.i_type) {
141 x4->out_pic.pict_type = AV_PICTURE_TYPE_I;
144 x4->out_pic.pict_type = AV_PICTURE_TYPE_P;
148 x4->out_pic.pict_type = AV_PICTURE_TYPE_B;
152 /* There is no IDR frame in AVS JiZhun */
153 /* Sequence header is used as a flag */
154 x4->out_pic.key_frame = pic_out.i_type == XAVS_TYPE_I;
156 x4->out_pic.quality = (pic_out.i_qpplus1 - 1) * FF_QP2LAMBDA;
161 static av_cold int XAVS_close(AVCodecContext *avctx)
163 XavsContext *x4 = avctx->priv_data;
165 av_freep(&avctx->extradata);
169 xavs_encoder_close(x4->enc);
174 static av_cold int XAVS_init(AVCodecContext *avctx)
176 XavsContext *x4 = avctx->priv_data;
179 xavs_param_default(&x4->params);
181 x4->params.pf_log = XAVS_log;
182 x4->params.p_log_private = avctx;
183 x4->params.i_keyint_max = avctx->gop_size;
184 x4->params.rc.i_bitrate = avctx->bit_rate / 1000;
185 x4->params.rc.i_vbv_buffer_size = avctx->rc_buffer_size / 1000;
186 x4->params.rc.i_vbv_max_bitrate = avctx->rc_max_rate / 1000;
187 x4->params.rc.b_stat_write = avctx->flags & CODEC_FLAG_PASS1;
188 if (avctx->flags & CODEC_FLAG_PASS2) {
189 x4->params.rc.b_stat_read = 1;
192 x4->params.rc.i_rc_method = XAVS_RC_CRF;
193 x4->params.rc.f_rf_constant = avctx->crf;
194 } else if (avctx->cqp > -1) {
195 x4->params.rc.i_rc_method = XAVS_RC_CQP;
196 x4->params.rc.i_qp_constant = avctx->cqp;
200 /* if neither crf nor cqp modes are selected we have to enable the RC */
201 /* we do it this way because we cannot check if the bitrate has been set */
202 if (!(avctx->crf || (avctx->cqp > -1)))
203 x4->params.rc.i_rc_method = XAVS_RC_ABR;
205 x4->params.i_bframe = avctx->max_b_frames;
206 /* cabac is not included in AVS JiZhun Profile */
207 x4->params.b_cabac = 0;
209 x4->params.i_bframe_adaptive = avctx->b_frame_strategy;
210 x4->params.i_bframe_bias = avctx->bframebias;
212 avctx->has_b_frames = !!avctx->max_b_frames;
214 /* AVS doesn't allow B picture as reference */
215 /* The max allowed reference frame number of B is 2 */
216 x4->params.i_keyint_min = avctx->keyint_min;
217 if (x4->params.i_keyint_min > x4->params.i_keyint_max)
218 x4->params.i_keyint_min = x4->params.i_keyint_max;
220 x4->params.i_scenecut_threshold = avctx->scenechange_threshold;
222 // x4->params.b_deblocking_filter = avctx->flags & CODEC_FLAG_LOOP_FILTER;
223 x4->params.i_deblocking_filter_alphac0 = avctx->deblockalpha;
224 x4->params.i_deblocking_filter_beta = avctx->deblockbeta;
226 x4->params.rc.i_qp_min = avctx->qmin;
227 x4->params.rc.i_qp_max = avctx->qmax;
228 x4->params.rc.i_qp_step = avctx->max_qdiff;
230 x4->params.rc.f_qcompress = avctx->qcompress; /* 0.0 => cbr, 1.0 => constant qp */
231 x4->params.rc.f_qblur = avctx->qblur; /* temporally blur quants */
232 x4->params.rc.f_complexity_blur = avctx->complexityblur;
234 x4->params.i_frame_reference = avctx->refs;
236 x4->params.i_width = avctx->width;
237 x4->params.i_height = avctx->height;
238 x4->params.vui.i_sar_width = avctx->sample_aspect_ratio.num;
239 x4->params.vui.i_sar_height = avctx->sample_aspect_ratio.den;
240 /* This is only used for counting the fps */
241 x4->params.i_fps_num = avctx->time_base.den;
242 x4->params.i_fps_den = avctx->time_base.num;
243 x4->params.analyse.inter = XAVS_ANALYSE_I8x8 |XAVS_ANALYSE_PSUB16x16| XAVS_ANALYSE_BSUB16x16;
244 if (avctx->partitions) {
245 if (avctx->partitions & XAVS_PART_I8X8)
246 x4->params.analyse.inter |= XAVS_ANALYSE_I8x8;
248 if (avctx->partitions & XAVS_PART_P8X8)
249 x4->params.analyse.inter |= XAVS_ANALYSE_PSUB16x16;
251 if (avctx->partitions & XAVS_PART_B8X8)
252 x4->params.analyse.inter |= XAVS_ANALYSE_BSUB16x16;
255 x4->params.analyse.i_direct_mv_pred = avctx->directpred;
257 x4->params.analyse.b_weighted_bipred = avctx->flags2 & CODEC_FLAG2_WPRED;
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_mixed_references = avctx->flags2 & CODEC_FLAG2_MIXED_REFS;
283 x4->params.analyse.b_chroma_me = avctx->me_cmp & FF_CMP_CHROMA;
284 /* AVS P2 only enables 8x8 transform */
285 x4->params.analyse.b_transform_8x8 = 1; //avctx->flags2 & CODEC_FLAG2_8X8DCT;
286 x4->params.analyse.b_fast_pskip = avctx->flags2 & CODEC_FLAG2_FASTPSKIP;
288 x4->params.analyse.i_trellis = avctx->trellis;
289 x4->params.analyse.i_noise_reduction = avctx->noise_reduction;
291 if (avctx->level > 0)
292 x4->params.i_level_idc = avctx->level;
294 x4->params.rc.f_rate_tolerance =
295 (float)avctx->bit_rate_tolerance/avctx->bit_rate;
297 if ((avctx->rc_buffer_size) &&
298 (avctx->rc_initial_buffer_occupancy <= avctx->rc_buffer_size)) {
299 x4->params.rc.f_vbv_buffer_init =
300 (float)avctx->rc_initial_buffer_occupancy / avctx->rc_buffer_size;
302 x4->params.rc.f_vbv_buffer_init = 0.9;
304 /* TAG:do we have MB tree RC method */
305 /* what is the RC method we are now using? Default NO */
306 x4->params.rc.b_mb_tree = !!(avctx->flags2 & CODEC_FLAG2_MBTREE);
307 x4->params.rc.f_ip_factor = 1 / fabs(avctx->i_quant_factor);
308 x4->params.rc.f_pb_factor = avctx->b_quant_factor;
309 x4->params.analyse.i_chroma_qp_offset = avctx->chromaoffset;
311 x4->params.analyse.b_psnr = avctx->flags & CODEC_FLAG_PSNR;
312 x4->params.i_log_level = XAVS_LOG_DEBUG;
313 x4->params.b_aud = avctx->flags2 & CODEC_FLAG2_AUD;
314 x4->params.i_threads = avctx->thread_count;
315 x4->params.b_interlaced = avctx->flags & CODEC_FLAG_INTERLACED_DCT;
317 if (avctx->flags & CODEC_FLAG_GLOBAL_HEADER)
318 x4->params.b_repeat_headers = 0;
320 x4->enc = xavs_encoder_open(&x4->params);
324 avctx->coded_frame = &x4->out_pic;
325 /* TAG: Do we have GLOBAL HEADER in AVS */
326 /* We Have PPS and SPS in AVS */
327 if (avctx->flags & CODEC_FLAG_GLOBAL_HEADER) {
331 s = xavs_encoder_headers(x4->enc, &nal, &nnal);
333 avctx->extradata = av_malloc(s);
334 avctx->extradata_size = encode_nals(avctx, avctx->extradata, s, nal, nnal, 1);
339 AVCodec ff_libxavs_encoder = {
341 .type = AVMEDIA_TYPE_VIDEO,
343 .priv_data_size = sizeof(XavsContext),
345 .encode = XAVS_frame,
347 .capabilities = CODEC_CAP_DELAY,
348 .pix_fmts = (const enum PixelFormat[]) { PIX_FMT_YUV420P, PIX_FMT_NONE },
349 .long_name = NULL_IF_CONFIG_SMALL("libxavs - the Chinese Audio Video Standard Encoder"),