Libav
libxavs.c
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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 Libav.
6  *
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.
11  *
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.
16  *
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
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 
41 typedef struct XavsContext {
42  AVClass *class;
43  xavs_param_t params;
44  xavs_t *enc;
45  xavs_picture_t pic;
47  int sei_size;
49  float crf;
50  int cqp;
51  int b_bias;
52  float cplxblur;
54  int aud;
56  int mbtree;
58 
59  int64_t *pts_buffer;
61 } XavsContext;
62 
63 static 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 
78 static 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_packet(pkt, size)) < 0) {
92  av_log(ctx, AV_LOG_ERROR, "Error getting output packet of size %d.\n", size);
93  return ret;
94  }
95  p = pkt->data;
96 
97  /* Write the SEI as part of the first frame. */
98  if (x4->sei_size > 0 && nnal > 0) {
99  memcpy(p, x4->sei, x4->sei_size);
100  p += x4->sei_size;
101  x4->sei_size = 0;
102  }
103 
104  for (i = 0; i < nnal; i++) {
105  s = xavs_nal_encode(p, &size, 1, nals + i);
106  if (s < 0)
107  return -1;
108  p += s;
109  }
110  pkt->size = p - pkt->data;
111 
112  return 1;
113 }
114 
115 static int XAVS_frame(AVCodecContext *avctx, AVPacket *pkt,
116  const AVFrame *frame, int *got_packet)
117 {
118  XavsContext *x4 = avctx->priv_data;
119  xavs_nal_t *nal;
120  int nnal, i, ret;
121  xavs_picture_t pic_out;
122 
123  x4->pic.img.i_csp = XAVS_CSP_I420;
124  x4->pic.img.i_plane = 3;
125 
126  if (frame) {
127  for (i = 0; i < 3; i++) {
128  x4->pic.img.plane[i] = frame->data[i];
129  x4->pic.img.i_stride[i] = frame->linesize[i];
130  }
131 
132  x4->pic.i_pts = frame->pts;
133  x4->pic.i_type = XAVS_TYPE_AUTO;
134  x4->pts_buffer[avctx->frame_number % (avctx->max_b_frames+1)] = frame->pts;
135  }
136 
137  if (xavs_encoder_encode(x4->enc, &nal, &nnal,
138  frame? &x4->pic: NULL, &pic_out) < 0)
139  return -1;
140 
141  ret = encode_nals(avctx, pkt, nal, nnal);
142 
143  if (ret < 0)
144  return -1;
145 
146  if (!ret) {
147  if (!frame && !(x4->end_of_stream)) {
148  if ((ret = ff_alloc_packet(pkt, 4)) < 0)
149  return ret;
150 
151  pkt->data[0] = 0x0;
152  pkt->data[1] = 0x0;
153  pkt->data[2] = 0x01;
154  pkt->data[3] = 0xb1;
155  pkt->dts = 2*x4->pts_buffer[(x4->out_frame_count-1)%(avctx->max_b_frames+1)] -
156  x4->pts_buffer[(x4->out_frame_count-2)%(avctx->max_b_frames+1)];
158  *got_packet = 1;
159  }
160  return 0;
161  }
162 
163  avctx->coded_frame->pts = pic_out.i_pts;
164  pkt->pts = pic_out.i_pts;
165  if (avctx->has_b_frames) {
166  if (!x4->out_frame_count)
167  pkt->dts = pkt->pts - (x4->pts_buffer[1] - x4->pts_buffer[0]);
168  else
169  pkt->dts = x4->pts_buffer[(x4->out_frame_count-1)%(avctx->max_b_frames+1)];
170  } else
171  pkt->dts = pkt->pts;
172 
173  switch (pic_out.i_type) {
174  case XAVS_TYPE_IDR:
175  case XAVS_TYPE_I:
177  break;
178  case XAVS_TYPE_P:
180  break;
181  case XAVS_TYPE_B:
182  case XAVS_TYPE_BREF:
184  break;
185  }
186 
187  /* There is no IDR frame in AVS JiZhun */
188  /* Sequence header is used as a flag */
189  if (pic_out.i_type == XAVS_TYPE_I) {
190  avctx->coded_frame->key_frame = 1;
191  pkt->flags |= AV_PKT_FLAG_KEY;
192  }
193 
194  avctx->coded_frame->quality = (pic_out.i_qpplus1 - 1) * FF_QP2LAMBDA;
195 
196  x4->out_frame_count++;
197  *got_packet = ret;
198  return 0;
199 }
200 
202 {
203  XavsContext *x4 = avctx->priv_data;
204 
205  av_freep(&avctx->extradata);
206  av_free(x4->sei);
207  av_freep(&x4->pts_buffer);
208 
209  if (x4->enc)
210  xavs_encoder_close(x4->enc);
211 
212  av_frame_free(&avctx->coded_frame);
213 
214  return 0;
215 }
216 
217 static av_cold int XAVS_init(AVCodecContext *avctx)
218 {
219  XavsContext *x4 = avctx->priv_data;
220 
221  x4->sei_size = 0;
222  xavs_param_default(&x4->params);
223 
224  x4->params.pf_log = XAVS_log;
225  x4->params.p_log_private = avctx;
226  x4->params.i_keyint_max = avctx->gop_size;
227  if (avctx->bit_rate) {
228  x4->params.rc.i_bitrate = avctx->bit_rate / 1000;
229  x4->params.rc.i_rc_method = XAVS_RC_ABR;
230  }
231  x4->params.rc.i_vbv_buffer_size = avctx->rc_buffer_size / 1000;
232  x4->params.rc.i_vbv_max_bitrate = avctx->rc_max_rate / 1000;
233  x4->params.rc.b_stat_write = avctx->flags & CODEC_FLAG_PASS1;
234  if (avctx->flags & CODEC_FLAG_PASS2) {
235  x4->params.rc.b_stat_read = 1;
236  } else {
237  if (x4->crf >= 0) {
238  x4->params.rc.i_rc_method = XAVS_RC_CRF;
239  x4->params.rc.f_rf_constant = x4->crf;
240  } else if (x4->cqp >= 0) {
241  x4->params.rc.i_rc_method = XAVS_RC_CQP;
242  x4->params.rc.i_qp_constant = x4->cqp;
243  }
244  }
245 
246  if (x4->aud >= 0)
247  x4->params.b_aud = x4->aud;
248  if (x4->mbtree >= 0)
249  x4->params.rc.b_mb_tree = x4->mbtree;
250  if (x4->direct_pred >= 0)
251  x4->params.analyse.i_direct_mv_pred = x4->direct_pred;
252  if (x4->fast_pskip >= 0)
253  x4->params.analyse.b_fast_pskip = x4->fast_pskip;
254  if (x4->mixed_refs >= 0)
255  x4->params.analyse.b_mixed_references = x4->mixed_refs;
256  if (x4->b_bias != INT_MIN)
257  x4->params.i_bframe_bias = x4->b_bias;
258  if (x4->cplxblur >= 0)
259  x4->params.rc.f_complexity_blur = x4->cplxblur;
260 
261  x4->params.i_bframe = avctx->max_b_frames;
262  /* cabac is not included in AVS JiZhun Profile */
263  x4->params.b_cabac = 0;
264 
265  x4->params.i_bframe_adaptive = avctx->b_frame_strategy;
266 
267  avctx->has_b_frames = !!avctx->max_b_frames;
268 
269  /* AVS doesn't allow B picture as reference */
270  /* The max allowed reference frame number of B is 2 */
271  x4->params.i_keyint_min = avctx->keyint_min;
272  if (x4->params.i_keyint_min > x4->params.i_keyint_max)
273  x4->params.i_keyint_min = x4->params.i_keyint_max;
274 
275  x4->params.i_scenecut_threshold = avctx->scenechange_threshold;
276 
277  // x4->params.b_deblocking_filter = avctx->flags & CODEC_FLAG_LOOP_FILTER;
278 
279  x4->params.rc.i_qp_min = avctx->qmin;
280  x4->params.rc.i_qp_max = avctx->qmax;
281  x4->params.rc.i_qp_step = avctx->max_qdiff;
282 
283  x4->params.rc.f_qcompress = avctx->qcompress; /* 0.0 => cbr, 1.0 => constant qp */
284  x4->params.rc.f_qblur = avctx->qblur; /* temporally blur quants */
285 
286  x4->params.i_frame_reference = avctx->refs;
287 
288  x4->params.i_width = avctx->width;
289  x4->params.i_height = avctx->height;
290  x4->params.vui.i_sar_width = avctx->sample_aspect_ratio.num;
291  x4->params.vui.i_sar_height = avctx->sample_aspect_ratio.den;
292  /* This is only used for counting the fps */
293  x4->params.i_fps_num = avctx->time_base.den;
294  x4->params.i_fps_den = avctx->time_base.num;
295  x4->params.analyse.inter = XAVS_ANALYSE_I8x8 |XAVS_ANALYSE_PSUB16x16| XAVS_ANALYSE_BSUB16x16;
296 
297  switch (avctx->me_method) {
298  case ME_EPZS:
299  x4->params.analyse.i_me_method = XAVS_ME_DIA;
300  break;
301  case ME_HEX:
302  x4->params.analyse.i_me_method = XAVS_ME_HEX;
303  break;
304  case ME_UMH:
305  x4->params.analyse.i_me_method = XAVS_ME_UMH;
306  break;
307  case ME_FULL:
308  x4->params.analyse.i_me_method = XAVS_ME_ESA;
309  break;
310  case ME_TESA:
311  x4->params.analyse.i_me_method = XAVS_ME_TESA;
312  break;
313  default:
314  x4->params.analyse.i_me_method = XAVS_ME_HEX;
315  }
316 
317  x4->params.analyse.i_me_range = avctx->me_range;
318  x4->params.analyse.i_subpel_refine = avctx->me_subpel_quality;
319 
320  x4->params.analyse.b_chroma_me = avctx->me_cmp & FF_CMP_CHROMA;
321  /* AVS P2 only enables 8x8 transform */
322  x4->params.analyse.b_transform_8x8 = 1; //avctx->flags2 & CODEC_FLAG2_8X8DCT;
323 
324  x4->params.analyse.i_trellis = avctx->trellis;
325  x4->params.analyse.i_noise_reduction = avctx->noise_reduction;
326 
327  if (avctx->level > 0)
328  x4->params.i_level_idc = avctx->level;
329 
330  x4->params.rc.f_rate_tolerance =
331  (float)avctx->bit_rate_tolerance/avctx->bit_rate;
332 
333  if ((avctx->rc_buffer_size) &&
334  (avctx->rc_initial_buffer_occupancy <= avctx->rc_buffer_size)) {
335  x4->params.rc.f_vbv_buffer_init =
336  (float)avctx->rc_initial_buffer_occupancy / avctx->rc_buffer_size;
337  } else
338  x4->params.rc.f_vbv_buffer_init = 0.9;
339 
340  /* TAG:do we have MB tree RC method */
341  /* what is the RC method we are now using? Default NO */
342  x4->params.rc.f_ip_factor = 1 / fabs(avctx->i_quant_factor);
343  x4->params.rc.f_pb_factor = avctx->b_quant_factor;
344  x4->params.analyse.i_chroma_qp_offset = avctx->chromaoffset;
345 
346  x4->params.analyse.b_psnr = avctx->flags & CODEC_FLAG_PSNR;
347  x4->params.i_log_level = XAVS_LOG_DEBUG;
348  x4->params.i_threads = avctx->thread_count;
349  x4->params.b_interlaced = avctx->flags & CODEC_FLAG_INTERLACED_DCT;
350 
351  if (avctx->flags & CODEC_FLAG_GLOBAL_HEADER)
352  x4->params.b_repeat_headers = 0;
353 
354  x4->enc = xavs_encoder_open(&x4->params);
355  if (!x4->enc)
356  return -1;
357 
358  if (!(x4->pts_buffer = av_mallocz((avctx->max_b_frames+1) * sizeof(*x4->pts_buffer))))
359  return AVERROR(ENOMEM);
360 
361  avctx->coded_frame = av_frame_alloc();
362  if (!avctx->coded_frame)
363  return AVERROR(ENOMEM);
364 
365  /* TAG: Do we have GLOBAL HEADER in AVS */
366  /* We Have PPS and SPS in AVS */
367  if (avctx->flags & CODEC_FLAG_GLOBAL_HEADER) {
368  xavs_nal_t *nal;
369  int nnal, s, i, size;
370  uint8_t *p;
371 
372  s = xavs_encoder_headers(x4->enc, &nal, &nnal);
373 
374  avctx->extradata = p = av_malloc(s);
375  for (i = 0; i < nnal; i++) {
376  /* Don't put the SEI in extradata. */
377  if (nal[i].i_type == NAL_SEI) {
378  x4->sei = av_malloc( 5 + nal[i].i_payload * 4 / 3 );
379  if (xavs_nal_encode(x4->sei, &x4->sei_size, 1, nal + i) < 0)
380  return -1;
381 
382  continue;
383  }
384  size = xavs_nal_encode(p, &s, 1, nal + i);
385  if (size < 0)
386  return -1;
387  p += size;
388  }
389  avctx->extradata_size = p - avctx->extradata;
390  }
391  return 0;
392 }
393 
394 #define OFFSET(x) offsetof(XavsContext, x)
395 #define VE AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_ENCODING_PARAM
396 static const AVOption options[] = {
397  { "crf", "Select the quality for constant quality mode", OFFSET(crf), AV_OPT_TYPE_FLOAT, {-1 }, -1, FLT_MAX, VE },
398  { "qp", "Constant quantization parameter rate control method",OFFSET(cqp), AV_OPT_TYPE_INT, {.i64 = -1 }, -1, INT_MAX, VE },
399  { "b-bias", "Influences how often B-frames are used", OFFSET(b_bias), AV_OPT_TYPE_INT, {.i64 = INT_MIN}, INT_MIN, INT_MAX, VE },
400  { "cplxblur", "Reduce fluctuations in QP (before curve compression)", OFFSET(cplxblur), AV_OPT_TYPE_FLOAT, {-1 }, -1, FLT_MAX, VE},
401  { "direct-pred", "Direct MV prediction mode", OFFSET(direct_pred), AV_OPT_TYPE_INT, {.i64 = -1 }, -1, INT_MAX, VE, "direct-pred" },
402  { "none", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = XAVS_DIRECT_PRED_NONE }, 0, 0, VE, "direct-pred" },
403  { "spatial", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = XAVS_DIRECT_PRED_SPATIAL }, 0, 0, VE, "direct-pred" },
404  { "temporal", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = XAVS_DIRECT_PRED_TEMPORAL }, 0, 0, VE, "direct-pred" },
405  { "auto", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = XAVS_DIRECT_PRED_AUTO }, 0, 0, VE, "direct-pred" },
406  { "aud", "Use access unit delimiters.", OFFSET(aud), AV_OPT_TYPE_INT, {.i64 = -1 }, -1, 1, VE},
407  { "mbtree", "Use macroblock tree ratecontrol.", OFFSET(mbtree), AV_OPT_TYPE_INT, {.i64 = -1 }, -1, 1, VE},
408  { "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 },
409  { "fast-pskip", NULL, OFFSET(fast_pskip), AV_OPT_TYPE_INT, {.i64 = -1 }, -1, 1, VE},
410  { NULL },
411 };
412 
413 static const AVClass class = {
414  .class_name = "libxavs",
415  .item_name = av_default_item_name,
416  .option = options,
418 };
419 
420 static const AVCodecDefault xavs_defaults[] = {
421  { "b", "0" },
422  { NULL },
423 };
424 
426  .name = "libxavs",
427  .long_name = NULL_IF_CONFIG_SMALL("libxavs Chinese AVS (Audio Video Standard)"),
428  .type = AVMEDIA_TYPE_VIDEO,
429  .id = AV_CODEC_ID_CAVS,
430  .priv_data_size = sizeof(XavsContext),
431  .init = XAVS_init,
432  .encode2 = XAVS_frame,
433  .close = XAVS_close,
434  .capabilities = CODEC_CAP_DELAY | CODEC_CAP_AUTO_THREADS,
435  .pix_fmts = (const enum AVPixelFormat[]) { AV_PIX_FMT_YUV420P, AV_PIX_FMT_NONE },
436  .priv_class = &class,
437  .defaults = xavs_defaults,
438 };
void * av_malloc(size_t size)
Allocate a block of size bytes with alignment suitable for all memory accesses (including vectors if ...
Definition: mem.c:62
#define VE
Definition: libxavs.c:395
int size
This structure describes decoded (raw) audio or video data.
Definition: frame.h:135
AVOption.
Definition: opt.h:234
#define CODEC_FLAG_PASS2
Use internal 2pass ratecontrol in second pass mode.
Definition: avcodec.h:636
float qblur
amount of qscale smoothing over time (0.0-1.0)
Definition: avcodec.h:2082
#define AV_LOG_WARNING
Something somehow does not look correct.
Definition: log.h:129
memory handling functions
#define CODEC_FLAG_PASS1
Use internal 2pass ratecontrol in first pass mode.
Definition: avcodec.h:635
AVFrame * coded_frame
the picture in the bitstream
Definition: avcodec.h:2548
int max_b_frames
maximum number of B-frames between non-B-frames Note: The output will be delayed by max_b_frames+1 re...
Definition: avcodec.h:1325
int rc_initial_buffer_occupancy
Number of bits which should be loaded into the rc buffer before decoding starts.
Definition: avcodec.h:2180
xavs_t * enc
Definition: libxavs.c:44
int num
numerator
Definition: rational.h:44
int size
Definition: avcodec.h:974
enhanced predictive zonal search
Definition: avcodec.h:550
AVRational sample_aspect_ratio
sample aspect ratio (0 if unknown) That is the width of a pixel divided by the height of the pixel...
Definition: avcodec.h:1445
int end_of_stream
Definition: libxavs.c:48
static void XAVS_log(void *p, int level, const char *fmt, va_list args)
Definition: libxavs.c:63
AVCodec.
Definition: avcodec.h:2812
static const AVOption options[]
Definition: libxavs.c:396
int scenechange_threshold
scene change detection threshold 0 is default, larger means fewer detected scene changes.
Definition: avcodec.h:1622
AVRational time_base
This is the fundamental unit of time (in seconds) in terms of which frame timestamps are represented...
Definition: avcodec.h:1175
void av_freep(void *arg)
Free a memory block which has been allocated with av_malloc(z)() or av_realloc() and set the pointer ...
Definition: mem.c:198
static av_cold int XAVS_close(AVCodecContext *avctx)
Definition: libxavs.c:201
#define CODEC_FLAG_PSNR
error[?] variables will be set during encoding.
Definition: avcodec.h:645
const char * class_name
The name of the class; usually it is the same name as the context structure type to which the AVClass...
Definition: log.h:38
int bit_rate_tolerance
number of bits the bitstream is allowed to diverge from the reference.
Definition: avcodec.h:1122
uint8_t * sei
Definition: libxavs.c:46
uint8_t
#define av_cold
Definition: attributes.h:66
AVFrame * av_frame_alloc(void)
Allocate an AVFrame and set its fields to default values.
Definition: frame.c:57
AVOptions.
int me_range
maximum motion estimation search range in subpel units If 0 then no limit.
Definition: avcodec.h:1555
#define CODEC_FLAG_GLOBAL_HEADER
Place global headers in extradata instead of every keyframe.
Definition: avcodec.h:657
float b_quant_factor
qscale factor between IP and B-frames If > 0 then the last P-frame quantizer will be used (q= lastp_q...
Definition: avcodec.h:1334
int64_t pts
Presentation timestamp in time_base units (time when frame should be shown to user).
Definition: frame.h:211
uint8_t * extradata
some codecs need / can use extradata like Huffman tables.
Definition: avcodec.h:1164
int me_cmp
motion estimation comparison function
Definition: avcodec.h:1452
uint8_t * data
Definition: avcodec.h:973
#define FF_CMP_CHROMA
Definition: avcodec.h:1484
static int encode_nals(AVCodecContext *ctx, AVPacket *pkt, xavs_nal_t *nals, int nnal)
Definition: libxavs.c:78
hexagon based search
Definition: avcodec.h:552
#define AV_PKT_FLAG_KEY
The packet contains a keyframe.
Definition: avcodec.h:1019
int chromaoffset
chroma qp offset from luma
Definition: avcodec.h:1730
#define AV_LOG_ERROR
Something went wrong and cannot losslessly be recovered.
Definition: log.h:123
int has_b_frames
Size of the frame reordering buffer in the decoder.
Definition: avcodec.h:1355
void av_free(void *ptr)
Free a memory block which has been allocated with av_malloc(z)() or av_realloc(). ...
Definition: mem.c:186
#define END_OF_STREAM
Definition: libxavs.c:35
#define CODEC_CAP_DELAY
Encoder or decoder requires flushing with NULL input at the end in order to give the complete and cor...
Definition: avcodec.h:713
#define AVERROR(e)
Definition: error.h:43
void av_frame_free(AVFrame **frame)
Free the frame and any dynamically allocated objects in it, e.g.
Definition: frame.c:69
int qmax
maximum quantizer
Definition: avcodec.h:2096
static av_cold int XAVS_init(AVCodecContext *avctx)
Definition: libxavs.c:217
#define NULL_IF_CONFIG_SMALL(x)
Return NULL if CONFIG_SMALL is true, otherwise the argument without modification. ...
Definition: internal.h:145
#define AV_LOG_DEBUG
Stuff which is only useful for libav* developers.
Definition: log.h:144
int b_bias
Definition: libxavs.c:51
int flags
CODEC_FLAG_*.
Definition: avcodec.h:1144
int rc_max_rate
maximum bitrate
Definition: avcodec.h:2143
void av_log(void *avcl, int level, const char *fmt,...)
Definition: log.c:169
const char * name
Name of the codec implementation.
Definition: avcodec.h:2819
float i_quant_factor
qscale factor between P and I-frames If > 0 then the last p frame quantizer will be used (q= lastp_q*...
Definition: avcodec.h:1371
int mixed_refs
Definition: libxavs.c:57
int fast_pskip
Definition: libxavs.c:55
transformed exhaustive search algorithm
Definition: avcodec.h:554
int flags
A combination of AV_PKT_FLAG values.
Definition: avcodec.h:979
int rc_buffer_size
decoder bitstream buffer size
Definition: avcodec.h:2121
int direct_pred
Definition: libxavs.c:53
common internal API header
int refs
number of reference frames
Definition: avcodec.h:1723
static const AVCodecDefault xavs_defaults[]
Definition: libxavs.c:420
int bit_rate
the average bitrate
Definition: avcodec.h:1114
enum AVPictureType pict_type
Picture type of the frame.
Definition: frame.h:196
int out_frame_count
Definition: libxavs.c:60
#define FF_MIN_BUFFER_SIZE
minimum encoding buffer size Used to avoid some checks during header writing.
Definition: avcodec.h:538
int width
picture width / height.
Definition: avcodec.h:1229
#define CODEC_CAP_AUTO_THREADS
Codec supports avctx->thread_count == 0 (auto).
Definition: avcodec.h:767
int b_frame_strategy
Definition: avcodec.h:1340
int level
level
Definition: avcodec.h:2721
int quality
quality (between 1 (good) and FF_LAMBDA_MAX (bad))
Definition: frame.h:235
int ff_alloc_packet(AVPacket *avpkt, int size)
Check AVPacket size and/or allocate data.
Definition: utils.c:1266
#define CODEC_FLAG_INTERLACED_DCT
Use interlaced DCT.
Definition: avcodec.h:655
int max_qdiff
maximum quantizer difference between frames
Definition: avcodec.h:2103
xavs_param_t params
Definition: libxavs.c:43
LIBAVUTIL_VERSION_INT
Definition: eval.c:55
int thread_count
thread count is used to decide how many independent tasks should be passed to execute() ...
Definition: avcodec.h:2556
if(ac->has_optimized_func)
static int XAVS_frame(AVCodecContext *avctx, AVPacket *pkt, const AVFrame *frame, int *got_packet)
Definition: libxavs.c:115
NULL
Definition: eval.c:55
float cplxblur
Definition: libxavs.c:52
#define AV_LOG_INFO
Standard information.
Definition: log.h:134
Libavcodec external API header.
int mbtree
Definition: libxavs.c:56
Definition: h264.h:114
int linesize[AV_NUM_DATA_POINTERS]
For video, size in bytes of each picture line.
Definition: frame.h:153
av_default_item_name
Definition: dnxhdenc.c:52
main external API structure.
Definition: avcodec.h:1050
static void close(AVCodecParserContext *s)
Definition: h264_parser.c:490
int qmin
minimum quantizer
Definition: avcodec.h:2089
int extradata_size
Definition: avcodec.h:1165
int sei_size
Definition: libxavs.c:47
Describe the class of an AVClass context structure.
Definition: log.h:33
void av_vlog(void *avcl, int level, const char *fmt, va_list vl)
Send the specified message to the log if the level is less than or equal to the current av_log_level...
Definition: log.c:181
float qcompress
amount of qscale change between easy & hard scenes (0.0-1.0)
Definition: avcodec.h:2081
uint8_t * data[AV_NUM_DATA_POINTERS]
pointer to the picture/channel planes.
Definition: frame.h:141
uint8_t level
Definition: svq3.c:147
int noise_reduction
noise reduction strength
Definition: avcodec.h:1629
int gop_size
the number of pictures in a group of pictures, or 0 for intra_only
Definition: avcodec.h:1255
int cqp
Definition: libxavs.c:50
planar YUV 4:2:0, 12bpp, (1 Cr & Cb sample per 2x2 Y samples)
Definition: pixfmt.h:65
common internal api header.
Bi-dir predicted.
Definition: avutil.h:255
int den
denominator
Definition: rational.h:45
static av_cold int init(AVCodecParserContext *s)
Definition: h264_parser.c:499
int trellis
trellis RD quantization
Definition: avcodec.h:2250
void * priv_data
Definition: avcodec.h:1092
uneven multi-hexagon search
Definition: avcodec.h:553
AVCodec ff_libxavs_encoder
Definition: libxavs.c:425
int key_frame
1 -> keyframe, 0-> not
Definition: frame.h:191
#define FF_QP2LAMBDA
factor to convert from H.263 QP to lambda
Definition: avutil.h:207
float crf
Definition: libxavs.c:49
int64_t dts
Decompression timestamp in AVStream->time_base units; the time at which the packet is decompressed...
Definition: avcodec.h:972
int frame_number
Frame counter, set by libavcodec.
Definition: avcodec.h:1838
int64_t * pts_buffer
Definition: libxavs.c:59
int me_method
Motion estimation algorithm used for video coding.
Definition: avcodec.h:1279
#define OFFSET(x)
Definition: libxavs.c:394
AVPixelFormat
Pixel format.
Definition: pixfmt.h:63
This structure stores compressed data.
Definition: avcodec.h:950
int aud
Definition: libxavs.c:54
int me_subpel_quality
subpel ME quality
Definition: avcodec.h:1526
void * av_mallocz(size_t size)
Allocate a block of size bytes with alignment suitable for all memory accesses (including vectors if ...
Definition: mem.c:205
int64_t pts
Presentation timestamp in AVStream->time_base units; the time at which the decompressed packet will b...
Definition: avcodec.h:966
Predicted.
Definition: avutil.h:254
xavs_picture_t pic
Definition: libxavs.c:45
int keyint_min
minimum GOP size
Definition: avcodec.h:1716