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/libavcodec/libxavs.c

http://github.com/FFmpeg/FFmpeg
C | 482 lines | 374 code | 74 blank | 34 comment | 56 complexity | 5f403360f51956aa9c33b34344ae14ac MD5 | raw file
  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 motion_est;
 57    int mbtree;
 58    int mixed_refs;
 59    int b_frame_strategy;
 60    int chroma_offset;
 61    int scenechange_threshold;
 62    int noise_reduction;
 63
 64    int64_t *pts_buffer;
 65    int out_frame_count;
 66} XavsContext;
 67
 68static void XAVS_log(void *p, int level, const char *fmt, va_list args)
 69{
 70    static const int level_map[] = {
 71        [XAVS_LOG_ERROR]   = AV_LOG_ERROR,
 72        [XAVS_LOG_WARNING] = AV_LOG_WARNING,
 73        [XAVS_LOG_INFO]    = AV_LOG_INFO,
 74        [XAVS_LOG_DEBUG]   = AV_LOG_DEBUG
 75    };
 76
 77    if (level < 0 || level > XAVS_LOG_DEBUG)
 78        return;
 79
 80    av_vlog(p, level_map[level], fmt, args);
 81}
 82
 83static int encode_nals(AVCodecContext *ctx, AVPacket *pkt,
 84                       xavs_nal_t *nals, int nnal)
 85{
 86    XavsContext *x4 = ctx->priv_data;
 87    uint8_t *p;
 88    int i, s, ret, size = x4->sei_size + AV_INPUT_BUFFER_MIN_SIZE;
 89
 90    if (!nnal)
 91        return 0;
 92
 93    for (i = 0; i < nnal; i++)
 94        size += nals[i].i_payload;
 95
 96    if ((ret = ff_alloc_packet2(ctx, pkt, size, 0)) < 0)
 97        return ret;
 98    p = pkt->data;
 99
100    /* Write the SEI as part of the first frame. */
101    if (x4->sei_size > 0 && nnal > 0) {
102        memcpy(p, x4->sei, x4->sei_size);
103        p += x4->sei_size;
104        x4->sei_size = 0;
105    }
106
107    for (i = 0; i < nnal; i++) {
108        s = xavs_nal_encode(p, &size, 1, nals + i);
109        if (s < 0)
110            return -1;
111        p += s;
112    }
113    pkt->size = p - pkt->data;
114
115    return 1;
116}
117
118static int XAVS_frame(AVCodecContext *avctx, AVPacket *pkt,
119                      const AVFrame *frame, int *got_packet)
120{
121    XavsContext *x4 = avctx->priv_data;
122    xavs_nal_t *nal;
123    int nnal, i, ret;
124    xavs_picture_t pic_out;
125    int pict_type;
126
127    x4->pic.img.i_csp   = XAVS_CSP_I420;
128    x4->pic.img.i_plane = 3;
129
130    if (frame) {
131       for (i = 0; i < 3; i++) {
132            x4->pic.img.plane[i] = frame->data[i];
133            x4->pic.img.i_stride[i] = frame->linesize[i];
134       }
135
136        x4->pic.i_pts  = frame->pts;
137        x4->pic.i_type = XAVS_TYPE_AUTO;
138        x4->pts_buffer[avctx->frame_number % (avctx->max_b_frames+1)] = frame->pts;
139    }
140
141    if (xavs_encoder_encode(x4->enc, &nal, &nnal,
142                            frame? &x4->pic: NULL, &pic_out) < 0)
143    return -1;
144
145    ret = encode_nals(avctx, pkt, nal, nnal);
146
147    if (ret < 0)
148        return -1;
149
150    if (!ret) {
151        if (!frame && !(x4->end_of_stream)) {
152            if ((ret = ff_alloc_packet2(avctx, pkt, 4, 0)) < 0)
153                return ret;
154
155            pkt->data[0] = 0x0;
156            pkt->data[1] = 0x0;
157            pkt->data[2] = 0x01;
158            pkt->data[3] = 0xb1;
159            pkt->dts = 2*x4->pts_buffer[(x4->out_frame_count-1)%(avctx->max_b_frames+1)] -
160                         x4->pts_buffer[(x4->out_frame_count-2)%(avctx->max_b_frames+1)];
161            x4->end_of_stream = END_OF_STREAM;
162            *got_packet = 1;
163        }
164        return 0;
165    }
166
167#if FF_API_CODED_FRAME
168FF_DISABLE_DEPRECATION_WARNINGS
169    avctx->coded_frame->pts = pic_out.i_pts;
170FF_ENABLE_DEPRECATION_WARNINGS
171#endif
172    pkt->pts = pic_out.i_pts;
173    if (avctx->has_b_frames) {
174        if (!x4->out_frame_count)
175            pkt->dts = pkt->pts - (x4->pts_buffer[1] - x4->pts_buffer[0]);
176        else
177            pkt->dts = x4->pts_buffer[(x4->out_frame_count-1)%(avctx->max_b_frames+1)];
178    } else
179        pkt->dts = pkt->pts;
180
181    switch (pic_out.i_type) {
182    case XAVS_TYPE_IDR:
183    case XAVS_TYPE_I:
184        pict_type = AV_PICTURE_TYPE_I;
185        break;
186    case XAVS_TYPE_P:
187        pict_type = AV_PICTURE_TYPE_P;
188        break;
189    case XAVS_TYPE_B:
190    case XAVS_TYPE_BREF:
191        pict_type = AV_PICTURE_TYPE_B;
192        break;
193    default:
194        pict_type = AV_PICTURE_TYPE_NONE;
195    }
196#if FF_API_CODED_FRAME
197FF_DISABLE_DEPRECATION_WARNINGS
198    avctx->coded_frame->pict_type = pict_type;
199FF_ENABLE_DEPRECATION_WARNINGS
200#endif
201
202    /* There is no IDR frame in AVS JiZhun */
203    /* Sequence header is used as a flag */
204    if (pic_out.i_type == XAVS_TYPE_I) {
205#if FF_API_CODED_FRAME
206FF_DISABLE_DEPRECATION_WARNINGS
207        avctx->coded_frame->key_frame = 1;
208FF_ENABLE_DEPRECATION_WARNINGS
209#endif
210        pkt->flags |= AV_PKT_FLAG_KEY;
211    }
212
213#if FF_API_CODED_FRAME
214FF_DISABLE_DEPRECATION_WARNINGS
215    avctx->coded_frame->quality = (pic_out.i_qpplus1 - 1) * FF_QP2LAMBDA;
216FF_ENABLE_DEPRECATION_WARNINGS
217#endif
218
219    ff_side_data_set_encoder_stats(pkt, (pic_out.i_qpplus1 - 1) * FF_QP2LAMBDA, NULL, 0, pict_type);
220
221    x4->out_frame_count++;
222    *got_packet = ret;
223    return 0;
224}
225
226static av_cold int XAVS_close(AVCodecContext *avctx)
227{
228    XavsContext *x4 = avctx->priv_data;
229
230    av_freep(&avctx->extradata);
231    av_freep(&x4->sei);
232    av_freep(&x4->pts_buffer);
233
234    if (x4->enc)
235        xavs_encoder_close(x4->enc);
236
237    return 0;
238}
239
240static av_cold int XAVS_init(AVCodecContext *avctx)
241{
242    XavsContext *x4 = avctx->priv_data;
243
244    x4->sei_size = 0;
245    xavs_param_default(&x4->params);
246
247    x4->params.pf_log               = XAVS_log;
248    x4->params.p_log_private        = avctx;
249    x4->params.i_keyint_max         = avctx->gop_size;
250    if (avctx->bit_rate) {
251        x4->params.rc.i_bitrate   = avctx->bit_rate / 1000;
252        x4->params.rc.i_rc_method = XAVS_RC_ABR;
253    }
254    x4->params.rc.i_vbv_buffer_size = avctx->rc_buffer_size / 1000;
255    x4->params.rc.i_vbv_max_bitrate = avctx->rc_max_rate    / 1000;
256    x4->params.rc.b_stat_write      = avctx->flags & AV_CODEC_FLAG_PASS1;
257    if (avctx->flags & AV_CODEC_FLAG_PASS2) {
258        x4->params.rc.b_stat_read = 1;
259    } else {
260        if (x4->crf >= 0) {
261            x4->params.rc.i_rc_method   = XAVS_RC_CRF;
262            x4->params.rc.f_rf_constant = x4->crf;
263        } else if (x4->cqp >= 0) {
264            x4->params.rc.i_rc_method   = XAVS_RC_CQP;
265            x4->params.rc.i_qp_constant = x4->cqp;
266        }
267    }
268
269    if (x4->aud >= 0)
270        x4->params.b_aud                      = x4->aud;
271    if (x4->mbtree >= 0)
272        x4->params.rc.b_mb_tree               = x4->mbtree;
273    if (x4->direct_pred >= 0)
274        x4->params.analyse.i_direct_mv_pred   = x4->direct_pred;
275    if (x4->fast_pskip >= 0)
276        x4->params.analyse.b_fast_pskip       = x4->fast_pskip;
277    if (x4->motion_est >= 0)
278        x4->params.analyse.i_me_method        = x4->motion_est;
279    if (x4->mixed_refs >= 0)
280        x4->params.analyse.b_mixed_references = x4->mixed_refs;
281    if (x4->b_bias != INT_MIN)
282        x4->params.i_bframe_bias              = x4->b_bias;
283    if (x4->cplxblur >= 0)
284        x4->params.rc.f_complexity_blur = x4->cplxblur;
285
286    x4->params.i_bframe          = avctx->max_b_frames;
287    /* cabac is not included in AVS JiZhun Profile */
288    x4->params.b_cabac           = 0;
289
290#if FF_API_PRIVATE_OPT
291FF_DISABLE_DEPRECATION_WARNINGS
292    if (avctx->b_frame_strategy)
293        x4->b_frame_strategy = avctx->b_frame_strategy;
294FF_ENABLE_DEPRECATION_WARNINGS
295#endif
296
297    x4->params.i_bframe_adaptive = x4->b_frame_strategy;
298
299    avctx->has_b_frames          = !!avctx->max_b_frames;
300
301    /* AVS doesn't allow B picture as reference */
302    /* The max allowed reference frame number of B is 2 */
303    x4->params.i_keyint_min      = avctx->keyint_min;
304    if (x4->params.i_keyint_min > x4->params.i_keyint_max)
305        x4->params.i_keyint_min = x4->params.i_keyint_max;
306
307#if FF_API_PRIVATE_OPT
308FF_DISABLE_DEPRECATION_WARNINGS
309    if (avctx->scenechange_threshold)
310        x4->scenechange_threshold = avctx->scenechange_threshold;
311FF_ENABLE_DEPRECATION_WARNINGS
312#endif
313
314    x4->params.i_scenecut_threshold = x4->scenechange_threshold;
315
316   // x4->params.b_deblocking_filter       = avctx->flags & AV_CODEC_FLAG_LOOP_FILTER;
317
318    x4->params.rc.i_qp_min                 = avctx->qmin;
319    x4->params.rc.i_qp_max                 = avctx->qmax;
320    x4->params.rc.i_qp_step                = avctx->max_qdiff;
321
322    x4->params.rc.f_qcompress       = avctx->qcompress; /* 0.0 => cbr, 1.0 => constant qp */
323    x4->params.rc.f_qblur           = avctx->qblur;     /* temporally blur quants */
324
325    x4->params.i_frame_reference    = avctx->refs;
326
327    x4->params.i_width              = avctx->width;
328    x4->params.i_height             = avctx->height;
329    x4->params.vui.i_sar_width      = avctx->sample_aspect_ratio.num;
330    x4->params.vui.i_sar_height     = avctx->sample_aspect_ratio.den;
331    /* This is only used for counting the fps */
332    x4->params.i_fps_num            = avctx->time_base.den;
333    x4->params.i_fps_den            = avctx->time_base.num;
334    x4->params.analyse.inter        = XAVS_ANALYSE_I8x8 |XAVS_ANALYSE_PSUB16x16| XAVS_ANALYSE_BSUB16x16;
335
336    x4->params.analyse.i_me_range = avctx->me_range;
337    x4->params.analyse.i_subpel_refine    = avctx->me_subpel_quality;
338
339    x4->params.analyse.b_chroma_me        = avctx->me_cmp & FF_CMP_CHROMA;
340    /* AVS P2 only enables 8x8 transform */
341    x4->params.analyse.b_transform_8x8    = 1; //avctx->flags2 & AV_CODEC_FLAG2_8X8DCT;
342
343    x4->params.analyse.i_trellis          = avctx->trellis;
344
345#if FF_API_PRIVATE_OPT
346    FF_DISABLE_DEPRECATION_WARNINGS
347    if (avctx->noise_reduction >= 0)
348        x4->noise_reduction = avctx->noise_reduction;
349    FF_ENABLE_DEPRECATION_WARNINGS
350#endif
351
352    x4->params.analyse.i_noise_reduction  = x4->noise_reduction;
353
354    if (avctx->level > 0)
355        x4->params.i_level_idc = avctx->level;
356
357    if (avctx->bit_rate > 0)
358        x4->params.rc.f_rate_tolerance =
359            (float)avctx->bit_rate_tolerance / avctx->bit_rate;
360
361    if ((avctx->rc_buffer_size) &&
362        (avctx->rc_initial_buffer_occupancy <= avctx->rc_buffer_size)) {
363        x4->params.rc.f_vbv_buffer_init =
364            (float)avctx->rc_initial_buffer_occupancy / avctx->rc_buffer_size;
365    } else
366        x4->params.rc.f_vbv_buffer_init = 0.9;
367
368    /* TAG:do we have MB tree RC method */
369    /* what is the RC method we are now using? Default NO */
370    x4->params.rc.f_ip_factor             = 1 / fabs(avctx->i_quant_factor);
371    x4->params.rc.f_pb_factor             = avctx->b_quant_factor;
372
373#if FF_API_PRIVATE_OPT
374FF_DISABLE_DEPRECATION_WARNINGS
375    if (avctx->chromaoffset)
376        x4->chroma_offset = avctx->chromaoffset;
377FF_ENABLE_DEPRECATION_WARNINGS
378#endif
379
380    x4->params.analyse.i_chroma_qp_offset = x4->chroma_offset;
381
382    x4->params.analyse.b_psnr = avctx->flags & AV_CODEC_FLAG_PSNR;
383    x4->params.i_log_level    = XAVS_LOG_DEBUG;
384    x4->params.i_threads      = avctx->thread_count;
385    x4->params.b_interlaced   = avctx->flags & AV_CODEC_FLAG_INTERLACED_DCT;
386
387    if (avctx->flags & AV_CODEC_FLAG_GLOBAL_HEADER)
388        x4->params.b_repeat_headers = 0;
389
390    x4->enc = xavs_encoder_open(&x4->params);
391    if (!x4->enc)
392        return -1;
393
394    if (!(x4->pts_buffer = av_mallocz_array((avctx->max_b_frames+1), sizeof(*x4->pts_buffer))))
395        return AVERROR(ENOMEM);
396
397    /* TAG: Do we have GLOBAL HEADER in AVS */
398    /* We Have PPS and SPS in AVS */
399    if (avctx->flags & AV_CODEC_FLAG_GLOBAL_HEADER && 0) {
400        xavs_nal_t *nal;
401        int nnal, s, i, size;
402        uint8_t *p;
403
404        s = xavs_encoder_headers(x4->enc, &nal, &nnal);
405
406        avctx->extradata = p = av_malloc(s);
407        for (i = 0; i < nnal; i++) {
408            /* Don't put the SEI in extradata. */
409            if (nal[i].i_type == NAL_SEI) {
410                x4->sei = av_malloc( 5 + nal[i].i_payload * 4 / 3 );
411                if (xavs_nal_encode(x4->sei, &x4->sei_size, 1, nal + i) < 0)
412                    return -1;
413
414                continue;
415            }
416            size = xavs_nal_encode(p, &s, 1, nal + i);
417            if (size < 0)
418                return -1;
419            p += size;
420        }
421        avctx->extradata_size = p - avctx->extradata;
422    }
423    return 0;
424}
425
426#define OFFSET(x) offsetof(XavsContext, x)
427#define VE AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_ENCODING_PARAM
428static const AVOption options[] = {
429    { "crf",           "Select the quality for constant quality mode",    OFFSET(crf),           AV_OPT_TYPE_FLOAT,  {.dbl = -1 }, -1, FLT_MAX, VE },
430    { "qp",            "Constant quantization parameter rate control method",OFFSET(cqp),        AV_OPT_TYPE_INT,    {.i64 = -1 }, -1, INT_MAX, VE },
431    { "b-bias",        "Influences how often B-frames are used",          OFFSET(b_bias),        AV_OPT_TYPE_INT,    {.i64 = INT_MIN}, INT_MIN, INT_MAX, VE },
432    { "cplxblur",      "Reduce fluctuations in QP (before curve compression)", OFFSET(cplxblur), AV_OPT_TYPE_FLOAT,  {.dbl = -1 }, -1, FLT_MAX, VE},
433    { "direct-pred",   "Direct MV prediction mode",                       OFFSET(direct_pred),   AV_OPT_TYPE_INT,    {.i64 = -1 }, -1, INT_MAX, VE, "direct-pred" },
434    { "none",          NULL,      0,    AV_OPT_TYPE_CONST, { .i64 = XAVS_DIRECT_PRED_NONE },     0, 0, VE, "direct-pred" },
435    { "spatial",       NULL,      0,    AV_OPT_TYPE_CONST, { .i64 = XAVS_DIRECT_PRED_SPATIAL },  0, 0, VE, "direct-pred" },
436    { "temporal",      NULL,      0,    AV_OPT_TYPE_CONST, { .i64 = XAVS_DIRECT_PRED_TEMPORAL }, 0, 0, VE, "direct-pred" },
437    { "auto",          NULL,      0,    AV_OPT_TYPE_CONST, { .i64 = XAVS_DIRECT_PRED_AUTO },     0, 0, VE, "direct-pred" },
438    { "aud",           "Use access unit delimiters.",                     OFFSET(aud),           AV_OPT_TYPE_BOOL,    {.i64 = -1 }, -1, 1, VE},
439    { "mbtree",        "Use macroblock tree ratecontrol.",                OFFSET(mbtree),        AV_OPT_TYPE_BOOL,    {.i64 = -1 }, -1, 1, VE},
440    { "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 },
441    { "fast-pskip",    NULL,                                              OFFSET(fast_pskip),    AV_OPT_TYPE_BOOL,    {.i64 = -1 }, -1, 1, VE},
442    { "motion-est",   "Set motion estimation method",                     OFFSET(motion_est),    AV_OPT_TYPE_INT,    { .i64 = XAVS_ME_DIA }, -1, XAVS_ME_TESA, VE, "motion-est"},
443    { "dia",           NULL,      0,    AV_OPT_TYPE_CONST, { .i64 = XAVS_ME_DIA },               INT_MIN, INT_MAX, VE, "motion-est" },
444    { "hex",           NULL,      0,    AV_OPT_TYPE_CONST, { .i64 = XAVS_ME_HEX },               INT_MIN, INT_MAX, VE, "motion-est" },
445    { "umh",           NULL,      0,    AV_OPT_TYPE_CONST, { .i64 = XAVS_ME_UMH },               INT_MIN, INT_MAX, VE, "motion-est" },
446    { "esa",           NULL,      0,    AV_OPT_TYPE_CONST, { .i64 = XAVS_ME_ESA },               INT_MIN, INT_MAX, VE, "motion-est" },
447    { "tesa",          NULL,      0,    AV_OPT_TYPE_CONST, { .i64 = XAVS_ME_TESA },              INT_MIN, INT_MAX, VE, "motion-est" },
448    { "b_strategy",    "Strategy to choose between I/P/B-frames",         OFFSET(b_frame_strategy), AV_OPT_TYPE_INT, {.i64 = 0 }, 0, 2, VE},
449    { "chromaoffset", "QP difference between chroma and luma",           OFFSET(chroma_offset), AV_OPT_TYPE_INT, {.i64 = 0 }, INT_MIN, INT_MAX, VE},
450    { "sc_threshold", "Scene change threshold",                           OFFSET(scenechange_threshold), AV_OPT_TYPE_INT, {.i64 = 0 }, 0, INT_MAX, VE},
451    { "noise_reduction", "Noise reduction",                               OFFSET(noise_reduction), AV_OPT_TYPE_INT, {.i64 = 0 }, 0, INT_MAX, VE},
452
453    { NULL },
454};
455
456static const AVClass xavs_class = {
457    .class_name = "libxavs",
458    .item_name  = av_default_item_name,
459    .option     = options,
460    .version    = LIBAVUTIL_VERSION_INT,
461};
462
463static const AVCodecDefault xavs_defaults[] = {
464    { "b",                "0" },
465    { NULL },
466};
467
468AVCodec ff_libxavs_encoder = {
469    .name           = "libxavs",
470    .long_name      = NULL_IF_CONFIG_SMALL("libxavs Chinese AVS (Audio Video Standard)"),
471    .type           = AVMEDIA_TYPE_VIDEO,
472    .id             = AV_CODEC_ID_CAVS,
473    .priv_data_size = sizeof(XavsContext),
474    .init           = XAVS_init,
475    .encode2        = XAVS_frame,
476    .close          = XAVS_close,
477    .capabilities   = AV_CODEC_CAP_DELAY | AV_CODEC_CAP_AUTO_THREADS,
478    .pix_fmts       = (const enum AVPixelFormat[]) { AV_PIX_FMT_YUV420P, AV_PIX_FMT_NONE },
479    .priv_class     = &xavs_class,
480    .defaults       = xavs_defaults,
481    .wrapper_name   = "libxavs",
482};