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Imported Debian version 2.5.0~trusty1.1
[deb_ffmpeg.git] / ffmpeg / libavcodec / libxavs.c
CommitLineData
2ba45a60
DM		 1/*
2 * AVS encoding using the xavs library
3 * Copyright (C) 2010 Amanda, Y.N. Wu <amanda11192003@gmail.com>
4 *
5 * This file is part of FFmpeg.
6 *
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.
11 *
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.
16 *
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
20 */
21
22#include <stdio.h>
23#include <stdlib.h>
24#include <string.h>
25#include <math.h>
26#include <stdint.h>
27#include <float.h>
28#include <xavs.h>
29#include "avcodec.h"
30#include "internal.h"
31#include "libavutil/internal.h"
32#include "libavutil/mem.h"
33#include "libavutil/opt.h"
34
35#define END_OF_STREAM 0x001
36
37#define XAVS_PART_I8X8 0x002 /* Analyze i8x8 (requires 8x8 transform) */
38#define XAVS_PART_P8X8 0x010 /* Analyze p16x8, p8x16 and p8x8 */
39#define XAVS_PART_B8X8 0x100 /* Analyze b16x8, b*/
40
41typedef struct XavsContext {
42 AVClass *class;
43 xavs_param_t params;
44 xavs_t *enc;
45 xavs_picture_t pic;
46 uint8_t *sei;
47 int sei_size;
48 int end_of_stream;
49 float crf;
50 int cqp;
51 int b_bias;
52 float cplxblur;
53 int direct_pred;
54 int aud;
55 int fast_pskip;
56 int mbtree;
57 int mixed_refs;
58
59 int64_t *pts_buffer;
60 int out_frame_count;
61} XavsContext;
62
63static void XAVS_log(void *p, int level, const char *fmt, va_list args)
64{
65 static const int level_map[] = {
66 [XAVS_LOG_ERROR] = AV_LOG_ERROR,
67 [XAVS_LOG_WARNING] = AV_LOG_WARNING,
68 [XAVS_LOG_INFO] = AV_LOG_INFO,
69 [XAVS_LOG_DEBUG] = AV_LOG_DEBUG
70 };
71
72 if (level < 0 || level > XAVS_LOG_DEBUG)
73 return;
74
75 av_vlog(p, level_map[level], fmt, args);
76}
77
78static int encode_nals(AVCodecContext *ctx, AVPacket *pkt,
79 xavs_nal_t *nals, int nnal)
80{
81 XavsContext *x4 = ctx->priv_data;
82 uint8_t *p;
83 int i, s, ret, size = x4->sei_size + FF_MIN_BUFFER_SIZE;
84
85 if (!nnal)
86 return 0;
87
88 for (i = 0; i < nnal; i++)
89 size += nals[i].i_payload;
90
91 if ((ret = ff_alloc_packet2(ctx, pkt, size)) < 0)
92 return ret;
93 p = pkt->data;
94
95 /* Write the SEI as part of the first frame. */
96 if (x4->sei_size > 0 && nnal > 0) {
97 memcpy(p, x4->sei, x4->sei_size);
98 p += x4->sei_size;
99 x4->sei_size = 0;
100 }
101
102 for (i = 0; i < nnal; i++) {
103 s = xavs_nal_encode(p, &size, 1, nals + i);
104 if (s < 0)
105 return -1;
106 p += s;
107 }
108 pkt->size = p - pkt->data;
109
110 return 1;
111}
112
113static int XAVS_frame(AVCodecContext *avctx, AVPacket *pkt,
114 const AVFrame *frame, int *got_packet)
115{
116 XavsContext *x4 = avctx->priv_data;
117 xavs_nal_t *nal;
118 int nnal, i, ret;
119 xavs_picture_t pic_out;
120
121 x4->pic.img.i_csp = XAVS_CSP_I420;
122 x4->pic.img.i_plane = 3;
123
124 if (frame) {
125 for (i = 0; i < 3; i++) {
126 x4->pic.img.plane[i] = frame->data[i];
127 x4->pic.img.i_stride[i] = frame->linesize[i];
128 }
129
130 x4->pic.i_pts = frame->pts;
131 x4->pic.i_type = XAVS_TYPE_AUTO;
132 x4->pts_buffer[avctx->frame_number % (avctx->max_b_frames+1)] = frame->pts;
133 }
134
135 if (xavs_encoder_encode(x4->enc, &nal, &nnal,
136 frame? &x4->pic: NULL, &pic_out) < 0)
137 return -1;
138
139 ret = encode_nals(avctx, pkt, nal, nnal);
140
141 if (ret < 0)
142 return -1;
143
144 if (!ret) {
145 if (!frame && !(x4->end_of_stream)) {
146 if ((ret = ff_alloc_packet2(avctx, pkt, 4)) < 0)
147 return ret;
148
149 pkt->data[0] = 0x0;
150 pkt->data[1] = 0x0;
151 pkt->data[2] = 0x01;
152 pkt->data[3] = 0xb1;
153 pkt->dts = 2*x4->pts_buffer[(x4->out_frame_count-1)%(avctx->max_b_frames+1)] -
154 x4->pts_buffer[(x4->out_frame_count-2)%(avctx->max_b_frames+1)];
155 x4->end_of_stream = END_OF_STREAM;
156 *got_packet = 1;
157 }
158 return 0;
159 }
160
161 avctx->coded_frame->pts = pic_out.i_pts;
162 pkt->pts = pic_out.i_pts;
163 if (avctx->has_b_frames) {
164 if (!x4->out_frame_count)
165 pkt->dts = pkt->pts - (x4->pts_buffer[1] - x4->pts_buffer[0]);
166 else
167 pkt->dts = x4->pts_buffer[(x4->out_frame_count-1)%(avctx->max_b_frames+1)];
168 } else
169 pkt->dts = pkt->pts;
170
171 switch (pic_out.i_type) {
172 case XAVS_TYPE_IDR:
173 case XAVS_TYPE_I:
174 avctx->coded_frame->pict_type = AV_PICTURE_TYPE_I;
175 break;
176 case XAVS_TYPE_P:
177 avctx->coded_frame->pict_type = AV_PICTURE_TYPE_P;
178 break;
179 case XAVS_TYPE_B:
180 case XAVS_TYPE_BREF:
181 avctx->coded_frame->pict_type = AV_PICTURE_TYPE_B;
182 break;
183 }
184
185 /* There is no IDR frame in AVS JiZhun */
186 /* Sequence header is used as a flag */
187 if (pic_out.i_type == XAVS_TYPE_I) {
188 avctx->coded_frame->key_frame = 1;
189 pkt->flags |= AV_PKT_FLAG_KEY;
190 }
191
192 avctx->coded_frame->quality = (pic_out.i_qpplus1 - 1) * FF_QP2LAMBDA;
193
194 x4->out_frame_count++;
195 *got_packet = ret;
196 return 0;
197}
198
199static av_cold int XAVS_close(AVCodecContext *avctx)
200{
201 XavsContext *x4 = avctx->priv_data;
202
203 av_freep(&avctx->extradata);
f6fa7814 204 av_freep(&x4->sei);
2ba45a60
DM		 205 av_freep(&x4->pts_buffer);
206
207 if (x4->enc)
208 xavs_encoder_close(x4->enc);
209
210 av_frame_free(&avctx->coded_frame);
211
212 return 0;
213}
214
215static av_cold int XAVS_init(AVCodecContext *avctx)
216{
217 XavsContext *x4 = avctx->priv_data;
218
219 x4->sei_size = 0;
220 xavs_param_default(&x4->params);
221
222 x4->params.pf_log = XAVS_log;
223 x4->params.p_log_private = avctx;
224 x4->params.i_keyint_max = avctx->gop_size;
225 if (avctx->bit_rate) {
226 x4->params.rc.i_bitrate = avctx->bit_rate / 1000;
227 x4->params.rc.i_rc_method = XAVS_RC_ABR;
228 }
229 x4->params.rc.i_vbv_buffer_size = avctx->rc_buffer_size / 1000;
230 x4->params.rc.i_vbv_max_bitrate = avctx->rc_max_rate / 1000;
231 x4->params.rc.b_stat_write = avctx->flags & CODEC_FLAG_PASS1;
232 if (avctx->flags & CODEC_FLAG_PASS2) {
233 x4->params.rc.b_stat_read = 1;
234 } else {
235 if (x4->crf >= 0) {
236 x4->params.rc.i_rc_method = XAVS_RC_CRF;
237 x4->params.rc.f_rf_constant = x4->crf;
238 } else if (x4->cqp >= 0) {
239 x4->params.rc.i_rc_method = XAVS_RC_CQP;
240 x4->params.rc.i_qp_constant = x4->cqp;
241 }
242 }
243
244 if (x4->aud >= 0)
245 x4->params.b_aud = x4->aud;
246 if (x4->mbtree >= 0)
247 x4->params.rc.b_mb_tree = x4->mbtree;
248 if (x4->direct_pred >= 0)
249 x4->params.analyse.i_direct_mv_pred = x4->direct_pred;
250 if (x4->fast_pskip >= 0)
251 x4->params.analyse.b_fast_pskip = x4->fast_pskip;
252 if (x4->mixed_refs >= 0)
253 x4->params.analyse.b_mixed_references = x4->mixed_refs;
254 if (x4->b_bias != INT_MIN)
255 x4->params.i_bframe_bias = x4->b_bias;
256 if (x4->cplxblur >= 0)
257 x4->params.rc.f_complexity_blur = x4->cplxblur;
258
259 x4->params.i_bframe = avctx->max_b_frames;
260 /* cabac is not included in AVS JiZhun Profile */
261 x4->params.b_cabac = 0;
262
263 x4->params.i_bframe_adaptive = avctx->b_frame_strategy;
264
265 avctx->has_b_frames = !!avctx->max_b_frames;
266
267 /* AVS doesn't allow B picture as reference */
268 /* The max allowed reference frame number of B is 2 */
269 x4->params.i_keyint_min = avctx->keyint_min;
270 if (x4->params.i_keyint_min > x4->params.i_keyint_max)
271 x4->params.i_keyint_min = x4->params.i_keyint_max;
272
273 x4->params.i_scenecut_threshold = avctx->scenechange_threshold;
274
275 // x4->params.b_deblocking_filter = avctx->flags & CODEC_FLAG_LOOP_FILTER;
276
277 x4->params.rc.i_qp_min = avctx->qmin;
278 x4->params.rc.i_qp_max = avctx->qmax;
279 x4->params.rc.i_qp_step = avctx->max_qdiff;
280
281 x4->params.rc.f_qcompress = avctx->qcompress; /* 0.0 => cbr, 1.0 => constant qp */
282 x4->params.rc.f_qblur = avctx->qblur; /* temporally blur quants */
283
284 x4->params.i_frame_reference = avctx->refs;
285
286 x4->params.i_width = avctx->width;
287 x4->params.i_height = avctx->height;
288 x4->params.vui.i_sar_width = avctx->sample_aspect_ratio.num;
289 x4->params.vui.i_sar_height = avctx->sample_aspect_ratio.den;
290 /* This is only used for counting the fps */
291 x4->params.i_fps_num = avctx->time_base.den;
292 x4->params.i_fps_den = avctx->time_base.num;
293 x4->params.analyse.inter = XAVS_ANALYSE_I8x8 |XAVS_ANALYSE_PSUB16x16| XAVS_ANALYSE_BSUB16x16;
294
295 switch (avctx->me_method) {
296 case ME_EPZS:
297 x4->params.analyse.i_me_method = XAVS_ME_DIA;
298 break;
299 case ME_HEX:
300 x4->params.analyse.i_me_method = XAVS_ME_HEX;
301 break;
302 case ME_UMH:
303 x4->params.analyse.i_me_method = XAVS_ME_UMH;
304 break;
305 case ME_FULL:
306 x4->params.analyse.i_me_method = XAVS_ME_ESA;
307 break;
308 case ME_TESA:
309 x4->params.analyse.i_me_method = XAVS_ME_TESA;
310 break;
311 default:
312 x4->params.analyse.i_me_method = XAVS_ME_HEX;
313 }
314
315 x4->params.analyse.i_me_range = avctx->me_range;
316 x4->params.analyse.i_subpel_refine = avctx->me_subpel_quality;
317
318 x4->params.analyse.b_chroma_me = avctx->me_cmp & FF_CMP_CHROMA;
319 /* AVS P2 only enables 8x8 transform */
320 x4->params.analyse.b_transform_8x8 = 1; //avctx->flags2 & CODEC_FLAG2_8X8DCT;
321
322 x4->params.analyse.i_trellis = avctx->trellis;
323 x4->params.analyse.i_noise_reduction = avctx->noise_reduction;
324
325 if (avctx->level > 0)
326 x4->params.i_level_idc = avctx->level;
327
328 x4->params.rc.f_rate_tolerance =
329 (float)avctx->bit_rate_tolerance/avctx->bit_rate;
330
331 if ((avctx->rc_buffer_size) &&
332 (avctx->rc_initial_buffer_occupancy <= avctx->rc_buffer_size)) {
333 x4->params.rc.f_vbv_buffer_init =
334 (float)avctx->rc_initial_buffer_occupancy / avctx->rc_buffer_size;
335 } else
336 x4->params.rc.f_vbv_buffer_init = 0.9;
337
338 /* TAG:do we have MB tree RC method */
339 /* what is the RC method we are now using? Default NO */
340 x4->params.rc.f_ip_factor = 1 / fabs(avctx->i_quant_factor);
341 x4->params.rc.f_pb_factor = avctx->b_quant_factor;
342 x4->params.analyse.i_chroma_qp_offset = avctx->chromaoffset;
343
344 x4->params.analyse.b_psnr = avctx->flags & CODEC_FLAG_PSNR;
345 x4->params.i_log_level = XAVS_LOG_DEBUG;
346 x4->params.i_threads = avctx->thread_count;
347 x4->params.b_interlaced = avctx->flags & CODEC_FLAG_INTERLACED_DCT;
348
349 if (avctx->flags & CODEC_FLAG_GLOBAL_HEADER)
350 x4->params.b_repeat_headers = 0;
351
352 x4->enc = xavs_encoder_open(&x4->params);
353 if (!x4->enc)
354 return -1;
355
356 if (!(x4->pts_buffer = av_mallocz_array((avctx->max_b_frames+1), sizeof(*x4->pts_buffer))))
357 return AVERROR(ENOMEM);
358
359 avctx->coded_frame = av_frame_alloc();
360 if (!avctx->coded_frame)
361 return AVERROR(ENOMEM);
362
363 /* TAG: Do we have GLOBAL HEADER in AVS */
364 /* We Have PPS and SPS in AVS */
365 if (avctx->flags & CODEC_FLAG_GLOBAL_HEADER) {
366 xavs_nal_t *nal;
367 int nnal, s, i, size;
368 uint8_t *p;
369
370 s = xavs_encoder_headers(x4->enc, &nal, &nnal);
371
372 avctx->extradata = p = av_malloc(s);
373 for (i = 0; i < nnal; i++) {
374 /* Don't put the SEI in extradata. */
375 if (nal[i].i_type == NAL_SEI) {
376 x4->sei = av_malloc( 5 + nal[i].i_payload * 4 / 3 );
377 if (xavs_nal_encode(x4->sei, &x4->sei_size, 1, nal + i) < 0)
378 return -1;
379
380 continue;
381 }
382 size = xavs_nal_encode(p, &s, 1, nal + i);
383 if (size < 0)
384 return -1;
385 p += size;
386 }
387 avctx->extradata_size = p - avctx->extradata;
388 }
389 return 0;
390}
391
392#define OFFSET(x) offsetof(XavsContext, x)
393#define VE AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_ENCODING_PARAM
394static const AVOption options[] = {
395 { "crf", "Select the quality for constant quality mode", OFFSET(crf), AV_OPT_TYPE_FLOAT, {.dbl = -1 }, -1, FLT_MAX, VE },
396 { "qp", "Constant quantization parameter rate control method",OFFSET(cqp), AV_OPT_TYPE_INT, {.i64 = -1 }, -1, INT_MAX, VE },
397 { "b-bias", "Influences how often B-frames are used", OFFSET(b_bias), AV_OPT_TYPE_INT, {.i64 = INT_MIN}, INT_MIN, INT_MAX, VE },
398 { "cplxblur", "Reduce fluctuations in QP (before curve compression)", OFFSET(cplxblur), AV_OPT_TYPE_FLOAT, {.dbl = -1 }, -1, FLT_MAX, VE},
399 { "direct-pred", "Direct MV prediction mode", OFFSET(direct_pred), AV_OPT_TYPE_INT, {.i64 = -1 }, -1, INT_MAX, VE, "direct-pred" },
400 { "none", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = XAVS_DIRECT_PRED_NONE }, 0, 0, VE, "direct-pred" },
401 { "spatial", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = XAVS_DIRECT_PRED_SPATIAL }, 0, 0, VE, "direct-pred" },
402 { "temporal", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = XAVS_DIRECT_PRED_TEMPORAL }, 0, 0, VE, "direct-pred" },
403 { "auto", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = XAVS_DIRECT_PRED_AUTO }, 0, 0, VE, "direct-pred" },
404 { "aud", "Use access unit delimiters.", OFFSET(aud), AV_OPT_TYPE_INT, {.i64 = -1 }, -1, 1, VE},
405 { "mbtree", "Use macroblock tree ratecontrol.", OFFSET(mbtree), AV_OPT_TYPE_INT, {.i64 = -1 }, -1, 1, VE},
406 { "mixed-refs", "One reference per partition, as opposed to one reference per macroblock", OFFSET(mixed_refs), AV_OPT_TYPE_INT, {.i64 = -1}, -1, 1, VE },
407 { "fast-pskip", NULL, OFFSET(fast_pskip), AV_OPT_TYPE_INT, {.i64 = -1 }, -1, 1, VE},
408 { NULL },
409};
410
411static const AVClass xavs_class = {
412 .class_name = "libxavs",
413 .item_name = av_default_item_name,
414 .option = options,
415 .version = LIBAVUTIL_VERSION_INT,
416};
417
418static const AVCodecDefault xavs_defaults[] = {
419 { "b", "0" },
420 { NULL },
421};
422
423AVCodec ff_libxavs_encoder = {
424 .name = "libxavs",
425 .long_name = NULL_IF_CONFIG_SMALL("libxavs Chinese AVS (Audio Video Standard)"),
426 .type = AVMEDIA_TYPE_VIDEO,
427 .id = AV_CODEC_ID_CAVS,
428 .priv_data_size = sizeof(XavsContext),
429 .init = XAVS_init,
430 .encode2 = XAVS_frame,
431 .close = XAVS_close,
432 .capabilities = CODEC_CAP_DELAY | CODEC_CAP_AUTO_THREADS,
433 .pix_fmts = (const enum AVPixelFormat[]) { AV_PIX_FMT_YUV420P, AV_PIX_FMT_NONE },
434 .priv_class = &xavs_class,
435 .defaults = xavs_defaults,
436};
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