aboutsummaryrefslogtreecommitdiffstats
path: root/libavcodec/libxavs.c
blob: d0f6e141c75d85ebdcc29fb04670787cad540189 (plain) (blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
/*
 * AVS encoding using the xavs library
 * Copyright (C) 2010 Amanda, Y.N. Wu <amanda11192003@gmail.com>
 *
 * This file is part of FFmpeg.
 *
 * FFmpeg is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2.1 of the License, or (at your option) any later version.
 *
 * FFmpeg is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with FFmpeg; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
 */

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <math.h>
#include <stdint.h>
#include <float.h>
#include <xavs.h>
#include "avcodec.h"
#include "codec_internal.h"
#include "encode.h"
#include "packet_internal.h"
#include "libavutil/internal.h"
#include "libavutil/mem.h"
#include "libavutil/opt.h"

#define END_OF_STREAM 0x001

#define XAVS_PART_I8X8 0x002 /* Analyze i8x8 (requires 8x8 transform) */
#define XAVS_PART_P8X8 0x010 /* Analyze p16x8, p8x16 and p8x8 */
#define XAVS_PART_B8X8 0x100 /* Analyze b16x8, b*/

typedef struct XavsContext {
    AVClass        *class;
    xavs_param_t    params;
    xavs_t         *enc;
    xavs_picture_t  pic;
    uint8_t        *sei;
    int             sei_size;
    int             end_of_stream;
    float crf;
    int cqp;
    int b_bias;
    float cplxblur;
    int direct_pred;
    int aud;
    int fast_pskip;
    int motion_est;
    int mbtree;
    int mixed_refs;
    int b_frame_strategy;
    int chroma_offset;
    int scenechange_threshold;
    int noise_reduction;

    int64_t *pts_buffer;
    int out_frame_count;
} XavsContext;

static void XAVS_log(void *p, int level, const char *fmt, va_list args)
{
    static const int level_map[] = {
        [XAVS_LOG_ERROR]   = AV_LOG_ERROR,
        [XAVS_LOG_WARNING] = AV_LOG_WARNING,
        [XAVS_LOG_INFO]    = AV_LOG_INFO,
        [XAVS_LOG_DEBUG]   = AV_LOG_DEBUG
    };

    if (level < 0 || level > XAVS_LOG_DEBUG)
        return;

    av_vlog(p, level_map[level], fmt, args);
}

static int encode_nals(AVCodecContext *ctx, AVPacket *pkt,
                       xavs_nal_t *nals, int nnal)
{
    XavsContext *x4 = ctx->priv_data;
    int64_t size = x4->sei_size;
    uint8_t *p, *p_end;
    int i, s, ret;

    if (!nnal)
        return 0;

    for (i = 0; i < nnal; i++)
        size += 3U + nals[i].i_payload;

    if ((ret = ff_get_encode_buffer(ctx, pkt, size, 0)) < 0)
        return ret;
    p = pkt->data;
    p_end = pkt->data + size;

    /* Write the SEI as part of the first frame. */
    if (x4->sei_size > 0 && nnal > 0) {
        memcpy(p, x4->sei, x4->sei_size);
        p += x4->sei_size;
        x4->sei_size = 0;
    }

    for (i = 0; i < nnal; i++) {
        int size = p_end - p;
        s = xavs_nal_encode(p, &size, 1, nals + i);
        if (s < 0)
            return AVERROR_EXTERNAL;
        if (s != 3U + nals[i].i_payload)
            return AVERROR_EXTERNAL;
        p += s;
    }

    return 1;
}

static int XAVS_frame(AVCodecContext *avctx, AVPacket *pkt,
                      const AVFrame *frame, int *got_packet)
{
    XavsContext *x4 = avctx->priv_data;
    xavs_nal_t *nal;
    int nnal, i, ret;
    xavs_picture_t pic_out;
    int pict_type;

    x4->pic.img.i_csp   = XAVS_CSP_I420;
    x4->pic.img.i_plane = 3;

    if (frame) {
       for (i = 0; i < 3; i++) {
            x4->pic.img.plane[i] = frame->data[i];
            x4->pic.img.i_stride[i] = frame->linesize[i];
       }

        x4->pic.i_pts  = frame->pts;
        x4->pic.i_type = XAVS_TYPE_AUTO;
        x4->pts_buffer[avctx->frame_num % (avctx->max_b_frames+1)] = frame->pts;
    }

    if (xavs_encoder_encode(x4->enc, &nal, &nnal,
                            frame? &x4->pic: NULL, &pic_out) < 0)
        return AVERROR_EXTERNAL;

    ret = encode_nals(avctx, pkt, nal, nnal);

    if (ret < 0)
        return ret;

    if (!ret) {
        if (!frame && !(x4->end_of_stream)) {
            if ((ret = ff_get_encode_buffer(avctx, pkt, 4, 0)) < 0)
                return ret;

            pkt->data[0] = 0x0;
            pkt->data[1] = 0x0;
            pkt->data[2] = 0x01;
            pkt->data[3] = 0xb1;
            pkt->dts = 2*x4->pts_buffer[(x4->out_frame_count-1)%(avctx->max_b_frames+1)] -
                         x4->pts_buffer[(x4->out_frame_count-2)%(avctx->max_b_frames+1)];
            x4->end_of_stream = END_OF_STREAM;
            *got_packet = 1;
        }
        return 0;
    }

    pkt->pts = pic_out.i_pts;
    if (avctx->has_b_frames) {
        if (!x4->out_frame_count)
            pkt->dts = pkt->pts - (x4->pts_buffer[1] - x4->pts_buffer[0]);
        else
            pkt->dts = x4->pts_buffer[(x4->out_frame_count-1)%(avctx->max_b_frames+1)];
    } else
        pkt->dts = pkt->pts;

    switch (pic_out.i_type) {
    case XAVS_TYPE_IDR:
    case XAVS_TYPE_I:
        pict_type = AV_PICTURE_TYPE_I;
        break;
    case XAVS_TYPE_P:
        pict_type = AV_PICTURE_TYPE_P;
        break;
    case XAVS_TYPE_B:
    case XAVS_TYPE_BREF:
        pict_type = AV_PICTURE_TYPE_B;
        break;
    default:
        pict_type = AV_PICTURE_TYPE_NONE;
    }

    /* There is no IDR frame in AVS JiZhun */
    /* Sequence header is used as a flag */
    if (pic_out.i_type == XAVS_TYPE_I) {
        pkt->flags |= AV_PKT_FLAG_KEY;
    }

    ff_side_data_set_encoder_stats(pkt, (pic_out.i_qpplus1 - 1) * FF_QP2LAMBDA, NULL, 0, pict_type);

    x4->out_frame_count++;
    *got_packet = ret;
    return 0;
}

static av_cold int XAVS_close(AVCodecContext *avctx)
{
    XavsContext *x4 = avctx->priv_data;

    av_freep(&x4->sei);
    av_freep(&x4->pts_buffer);

    if (x4->enc)
        xavs_encoder_close(x4->enc);

    return 0;
}

static av_cold int XAVS_init(AVCodecContext *avctx)
{
    XavsContext *x4 = avctx->priv_data;

    x4->sei_size = 0;
    xavs_param_default(&x4->params);

    x4->params.pf_log               = XAVS_log;
    x4->params.p_log_private        = avctx;
    x4->params.i_keyint_max         = avctx->gop_size;
    if (avctx->bit_rate) {
        x4->params.rc.i_bitrate   = avctx->bit_rate / 1000;
        x4->params.rc.i_rc_method = XAVS_RC_ABR;
    }
    x4->params.rc.i_vbv_buffer_size = avctx->rc_buffer_size / 1000;
    x4->params.rc.i_vbv_max_bitrate = avctx->rc_max_rate    / 1000;
    x4->params.rc.b_stat_write      = avctx->flags & AV_CODEC_FLAG_PASS1;
    if (avctx->flags & AV_CODEC_FLAG_PASS2) {
        x4->params.rc.b_stat_read = 1;
    } else {
        if (x4->crf >= 0) {
            x4->params.rc.i_rc_method   = XAVS_RC_CRF;
            x4->params.rc.f_rf_constant = x4->crf;
        } else if (x4->cqp >= 0) {
            x4->params.rc.i_rc_method   = XAVS_RC_CQP;
            x4->params.rc.i_qp_constant = x4->cqp;
        }
    }

    if (x4->aud >= 0)
        x4->params.b_aud                      = x4->aud;
    if (x4->mbtree >= 0)
        x4->params.rc.b_mb_tree               = x4->mbtree;
    if (x4->direct_pred >= 0)
        x4->params.analyse.i_direct_mv_pred   = x4->direct_pred;
    if (x4->fast_pskip >= 0)
        x4->params.analyse.b_fast_pskip       = x4->fast_pskip;
    if (x4->motion_est >= 0)
        x4->params.analyse.i_me_method        = x4->motion_est;
    if (x4->mixed_refs >= 0)
        x4->params.analyse.b_mixed_references = x4->mixed_refs;
    if (x4->b_bias != INT_MIN)
        x4->params.i_bframe_bias              = x4->b_bias;
    if (x4->cplxblur >= 0)
        x4->params.rc.f_complexity_blur = x4->cplxblur;

    x4->params.i_bframe          = avctx->max_b_frames;
    /* cabac is not included in AVS JiZhun Profile */
    x4->params.b_cabac           = 0;

    x4->params.i_bframe_adaptive = x4->b_frame_strategy;

    avctx->has_b_frames          = !!avctx->max_b_frames;

    /* AVS doesn't allow B picture as reference */
    /* The max allowed reference frame number of B is 2 */
    x4->params.i_keyint_min      = avctx->keyint_min;
    if (x4->params.i_keyint_min > x4->params.i_keyint_max)
        x4->params.i_keyint_min = x4->params.i_keyint_max;

    x4->params.i_scenecut_threshold = x4->scenechange_threshold;

   // x4->params.b_deblocking_filter       = avctx->flags & AV_CODEC_FLAG_LOOP_FILTER;

    x4->params.rc.i_qp_min                 = avctx->qmin;
    x4->params.rc.i_qp_max                 = avctx->qmax;
    x4->params.rc.i_qp_step                = avctx->max_qdiff;

    x4->params.rc.f_qcompress       = avctx->qcompress; /* 0.0 => cbr, 1.0 => constant qp */
    x4->params.rc.f_qblur           = avctx->qblur;     /* temporally blur quants */

    x4->params.i_frame_reference    = avctx->refs;

    x4->params.i_width              = avctx->width;
    x4->params.i_height             = avctx->height;
    x4->params.vui.i_sar_width      = avctx->sample_aspect_ratio.num;
    x4->params.vui.i_sar_height     = avctx->sample_aspect_ratio.den;
    /* This is only used for counting the fps */
    x4->params.i_fps_num            = avctx->time_base.den;
    x4->params.i_fps_den            = avctx->time_base.num;
    x4->params.analyse.inter        = XAVS_ANALYSE_I8x8 |XAVS_ANALYSE_PSUB16x16| XAVS_ANALYSE_BSUB16x16;

    x4->params.analyse.i_me_range = avctx->me_range;
    x4->params.analyse.i_subpel_refine    = avctx->me_subpel_quality;

    x4->params.analyse.b_chroma_me        = avctx->me_cmp & FF_CMP_CHROMA;
    /* AVS P2 only enables 8x8 transform */
    x4->params.analyse.b_transform_8x8    = 1; //avctx->flags2 & AV_CODEC_FLAG2_8X8DCT;

    x4->params.analyse.i_trellis          = avctx->trellis;

    x4->params.analyse.i_noise_reduction  = x4->noise_reduction;

    if (avctx->level > 0)
        x4->params.i_level_idc = avctx->level;

    if (avctx->bit_rate > 0)
        x4->params.rc.f_rate_tolerance =
            (float)avctx->bit_rate_tolerance / avctx->bit_rate;

    if ((avctx->rc_buffer_size) &&
        (avctx->rc_initial_buffer_occupancy <= avctx->rc_buffer_size)) {
        x4->params.rc.f_vbv_buffer_init =
            (float)avctx->rc_initial_buffer_occupancy / avctx->rc_buffer_size;
    } else
        x4->params.rc.f_vbv_buffer_init = 0.9;

    /* TAG:do we have MB tree RC method */
    /* what is the RC method we are now using? Default NO */
    x4->params.rc.f_ip_factor             = 1 / fabs(avctx->i_quant_factor);
    x4->params.rc.f_pb_factor             = avctx->b_quant_factor;

    x4->params.analyse.i_chroma_qp_offset = x4->chroma_offset;

    x4->params.analyse.b_psnr = avctx->flags & AV_CODEC_FLAG_PSNR;
    x4->params.i_log_level    = XAVS_LOG_DEBUG;
    x4->params.i_threads      = avctx->thread_count;
    x4->params.b_interlaced   = avctx->flags & AV_CODEC_FLAG_INTERLACED_DCT;

    if (avctx->flags & AV_CODEC_FLAG_GLOBAL_HEADER)
        x4->params.b_repeat_headers = 0;

    x4->enc = xavs_encoder_open(&x4->params);
    if (!x4->enc)
        return AVERROR_EXTERNAL;

    if (!FF_ALLOCZ_TYPED_ARRAY(x4->pts_buffer, avctx->max_b_frames + 1))
        return AVERROR(ENOMEM);

    /* TAG: Do we have GLOBAL HEADER in AVS */
    /* We Have PPS and SPS in AVS */
    if (avctx->flags & AV_CODEC_FLAG_GLOBAL_HEADER && 0) {
        xavs_nal_t *nal;
        int nnal, s, i, size;
        uint8_t *p;

        s = xavs_encoder_headers(x4->enc, &nal, &nnal);

        avctx->extradata = p = av_malloc(s);
        for (i = 0; i < nnal; i++) {
            /* Don't put the SEI in extradata. */
            if (nal[i].i_type == NAL_SEI) {
                x4->sei = av_malloc( 5 + nal[i].i_payload * 4 / 3 );
                if (xavs_nal_encode(x4->sei, &x4->sei_size, 1, nal + i) < 0)
                    return -1;

                continue;
            }
            size = xavs_nal_encode(p, &s, 1, nal + i);
            if (size < 0)
                return -1;
            p += size;
        }
        avctx->extradata_size = p - avctx->extradata;
    }
    return 0;
}

#define OFFSET(x) offsetof(XavsContext, x)
#define VE AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_ENCODING_PARAM
static const AVOption options[] = {
    { "crf",           "Select the quality for constant quality mode",    OFFSET(crf),           AV_OPT_TYPE_FLOAT,  {.dbl = -1 }, -1, FLT_MAX, VE },
    { "qp",            "Constant quantization parameter rate control method",OFFSET(cqp),        AV_OPT_TYPE_INT,    {.i64 = -1 }, -1, INT_MAX, VE },
    { "b-bias",        "Influences how often B-frames are used",          OFFSET(b_bias),        AV_OPT_TYPE_INT,    {.i64 = INT_MIN}, INT_MIN, INT_MAX, VE },
    { "cplxblur",      "Reduce fluctuations in QP (before curve compression)", OFFSET(cplxblur), AV_OPT_TYPE_FLOAT,  {.dbl = -1 }, -1, FLT_MAX, VE},
    { "direct-pred",   "Direct MV prediction mode",                       OFFSET(direct_pred),   AV_OPT_TYPE_INT,    {.i64 = -1 }, -1, INT_MAX, VE, .unit = "direct-pred" },
    { "none",          NULL,      0,    AV_OPT_TYPE_CONST, { .i64 = XAVS_DIRECT_PRED_NONE },     0, 0, VE, .unit = "direct-pred" },
    { "spatial",       NULL,      0,    AV_OPT_TYPE_CONST, { .i64 = XAVS_DIRECT_PRED_SPATIAL },  0, 0, VE, .unit = "direct-pred" },
    { "temporal",      NULL,      0,    AV_OPT_TYPE_CONST, { .i64 = XAVS_DIRECT_PRED_TEMPORAL }, 0, 0, VE, .unit = "direct-pred" },
    { "auto",          NULL,      0,    AV_OPT_TYPE_CONST, { .i64 = XAVS_DIRECT_PRED_AUTO },     0, 0, VE, .unit = "direct-pred" },
    { "aud",           "Use access unit delimiters.",                     OFFSET(aud),           AV_OPT_TYPE_BOOL,    {.i64 = -1 }, -1, 1, VE},
    { "mbtree",        "Use macroblock tree ratecontrol.",                OFFSET(mbtree),        AV_OPT_TYPE_BOOL,    {.i64 = -1 }, -1, 1, VE},
    { "mixed-refs",    "One reference per partition, as opposed to one reference per macroblock", OFFSET(mixed_refs), AV_OPT_TYPE_BOOL, {.i64 = -1}, -1, 1, VE },
    { "fast-pskip",    NULL,                                              OFFSET(fast_pskip),    AV_OPT_TYPE_BOOL,    {.i64 = -1 }, -1, 1, VE},
    { "motion-est",   "Set motion estimation method",                     OFFSET(motion_est),    AV_OPT_TYPE_INT,    { .i64 = XAVS_ME_DIA }, -1, XAVS_ME_TESA, VE, .unit = "motion-est"},
    { "dia",           NULL,      0,    AV_OPT_TYPE_CONST, { .i64 = XAVS_ME_DIA },               INT_MIN, INT_MAX, VE, .unit = "motion-est" },
    { "hex",           NULL,      0,    AV_OPT_TYPE_CONST, { .i64 = XAVS_ME_HEX },               INT_MIN, INT_MAX, VE, .unit = "motion-est" },
    { "umh",           NULL,      0,    AV_OPT_TYPE_CONST, { .i64 = XAVS_ME_UMH },               INT_MIN, INT_MAX, VE, .unit = "motion-est" },
    { "esa",           NULL,      0,    AV_OPT_TYPE_CONST, { .i64 = XAVS_ME_ESA },               INT_MIN, INT_MAX, VE, .unit = "motion-est" },
    { "tesa",          NULL,      0,    AV_OPT_TYPE_CONST, { .i64 = XAVS_ME_TESA },              INT_MIN, INT_MAX, VE, .unit = "motion-est" },
    { "b_strategy",    "Strategy to choose between I/P/B-frames",         OFFSET(b_frame_strategy), AV_OPT_TYPE_INT, {.i64 = 0 }, 0, 2, VE},
    { "chromaoffset", "QP difference between chroma and luma",           OFFSET(chroma_offset), AV_OPT_TYPE_INT, {.i64 = 0 }, INT_MIN, INT_MAX, VE},
    { "sc_threshold", "Scene change threshold",                           OFFSET(scenechange_threshold), AV_OPT_TYPE_INT, {.i64 = 0 }, 0, INT_MAX, VE},
    { "noise_reduction", "Noise reduction",                               OFFSET(noise_reduction), AV_OPT_TYPE_INT, {.i64 = 0 }, 0, INT_MAX, VE},

    { NULL },
};

static const AVClass xavs_class = {
    .class_name = "libxavs",
    .item_name  = av_default_item_name,
    .option     = options,
    .version    = LIBAVUTIL_VERSION_INT,
};

static const FFCodecDefault xavs_defaults[] = {
    { "b",                "0" },
    { NULL },
};

const FFCodec ff_libxavs_encoder = {
    .p.name         = "libxavs",
    CODEC_LONG_NAME("libxavs Chinese AVS (Audio Video Standard)"),
    .p.type         = AVMEDIA_TYPE_VIDEO,
    .p.id           = AV_CODEC_ID_CAVS,
    .p.capabilities = AV_CODEC_CAP_DR1 | AV_CODEC_CAP_DELAY |
                      AV_CODEC_CAP_OTHER_THREADS,
    .priv_data_size = sizeof(XavsContext),
    .init           = XAVS_init,
    FF_CODEC_ENCODE_CB(XAVS_frame),
    .close          = XAVS_close,
    .caps_internal  = FF_CODEC_CAP_NOT_INIT_THREADSAFE |
                      FF_CODEC_CAP_AUTO_THREADS,
    .p.pix_fmts     = (const enum AVPixelFormat[]) { AV_PIX_FMT_YUV420P, AV_PIX_FMT_NONE },
    .color_ranges   = AVCOL_RANGE_MPEG,
    .p.priv_class   = &xavs_class,
    .defaults       = xavs_defaults,
    .p.wrapper_name = "libxavs",
};