FFmpeg  4.4.5
asvenc.c
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1 /*
2  * Copyright (c) 2003 Michael Niedermayer
3  *
4  * This file is part of FFmpeg.
5  *
6  * FFmpeg is free software; you can redistribute it and/or
7  * modify it under the terms of the GNU Lesser General Public
8  * License as published by the Free Software Foundation; either
9  * version 2.1 of the License, or (at your option) any later version.
10  *
11  * FFmpeg is distributed in the hope that it will be useful,
12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14  * Lesser General Public License for more details.
15  *
16  * You should have received a copy of the GNU Lesser General Public
17  * License along with FFmpeg; if not, write to the Free Software
18  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
19  */
20 
21 /**
22  * @file
23  * ASUS V1/V2 encoder.
24  */
25 
26 #include "libavutil/attributes.h"
27 #include "libavutil/mem.h"
28 
29 #include "aandcttab.h"
30 #include "asv.h"
31 #include "avcodec.h"
32 #include "dct.h"
33 #include "fdctdsp.h"
34 #include "internal.h"
35 #include "mpeg12data.h"
36 
37 static inline void asv1_put_level(PutBitContext *pb, int level)
38 {
39  unsigned int index = level + 3;
40 
41  if (index <= 6) {
43  } else {
44  put_bits(pb, 3, 0); /* Escape code */
45  put_sbits(pb, 8, level);
46  }
47 }
48 
49 static inline void asv2_put_level(ASV1Context *a, PutBitContext *pb, int level)
50 {
51  unsigned int index = level + 31;
52 
53  if (index <= 62) {
55  } else {
56  put_bits_le(pb, 5, 0); /* Escape code */
57  if (level < -128 || level > 127) {
58  av_log(a->avctx, AV_LOG_WARNING, "Clipping level %d, increase qscale\n", level);
60  }
61  put_bits_le(pb, 8, level & 0xFF);
62  }
63 }
64 
65 static inline void asv1_encode_block(ASV1Context *a, int16_t block[64])
66 {
67  int i;
68  int nc_count = 0;
69 
70  put_bits(&a->pb, 8, (block[0] + 32) >> 6);
71  block[0] = 0;
72 
73  for (i = 0; i < 10; i++) {
74  const int index = ff_asv_scantab[4 * i];
75  int ccp = 0;
76 
77  if ((block[index + 0] = (block[index + 0] *
78  a->q_intra_matrix[index + 0] + (1 << 15)) >> 16))
79  ccp |= 8;
80  if ((block[index + 8] = (block[index + 8] *
81  a->q_intra_matrix[index + 8] + (1 << 15)) >> 16))
82  ccp |= 4;
83  if ((block[index + 1] = (block[index + 1] *
84  a->q_intra_matrix[index + 1] + (1 << 15)) >> 16))
85  ccp |= 2;
86  if ((block[index + 9] = (block[index + 9] *
87  a->q_intra_matrix[index + 9] + (1 << 15)) >> 16))
88  ccp |= 1;
89 
90  if (ccp) {
91  for (; nc_count; nc_count--)
92  put_bits(&a->pb, 2, 2); /* Skip */
93 
94  put_bits(&a->pb, ff_asv_ccp_tab[ccp][1], ff_asv_ccp_tab[ccp][0]);
95 
96  if (ccp & 8)
97  asv1_put_level(&a->pb, block[index + 0]);
98  if (ccp & 4)
99  asv1_put_level(&a->pb, block[index + 8]);
100  if (ccp & 2)
101  asv1_put_level(&a->pb, block[index + 1]);
102  if (ccp & 1)
103  asv1_put_level(&a->pb, block[index + 9]);
104  } else {
105  nc_count++;
106  }
107  }
108  put_bits(&a->pb, 5, 0xF); /* End of block */
109 }
110 
111 static inline void asv2_encode_block(ASV1Context *a, int16_t block[64])
112 {
113  int i;
114  int count = 0;
115 
116  for (count = 63; count > 3; count--) {
117  const int index = ff_asv_scantab[count];
118  if ((block[index] * a->q_intra_matrix[index] + (1 << 15)) >> 16)
119  break;
120  }
121 
122  count >>= 2;
123 
124  put_bits_le(&a->pb, 4, count);
125  put_bits_le(&a->pb, 8, (block[0] + 32) >> 6);
126  block[0] = 0;
127 
128  for (i = 0; i <= count; i++) {
129  const int index = ff_asv_scantab[4 * i];
130  int ccp = 0;
131 
132  if ((block[index + 0] = (block[index + 0] *
133  a->q_intra_matrix[index + 0] + (1 << 15)) >> 16))
134  ccp |= 8;
135  if ((block[index + 8] = (block[index + 8] *
136  a->q_intra_matrix[index + 8] + (1 << 15)) >> 16))
137  ccp |= 4;
138  if ((block[index + 1] = (block[index + 1] *
139  a->q_intra_matrix[index + 1] + (1 << 15)) >> 16))
140  ccp |= 2;
141  if ((block[index + 9] = (block[index + 9] *
142  a->q_intra_matrix[index + 9] + (1 << 15)) >> 16))
143  ccp |= 1;
144 
145  av_assert2(i || ccp < 8);
146  if (i)
147  put_bits_le(&a->pb, ff_asv_ac_ccp_tab[ccp][1], ff_asv_ac_ccp_tab[ccp][0]);
148  else
149  put_bits_le(&a->pb, ff_asv_dc_ccp_tab[ccp][1], ff_asv_dc_ccp_tab[ccp][0]);
150 
151  if (ccp) {
152  if (ccp & 8)
153  asv2_put_level(a, &a->pb, block[index + 0]);
154  if (ccp & 4)
155  asv2_put_level(a, &a->pb, block[index + 8]);
156  if (ccp & 2)
157  asv2_put_level(a, &a->pb, block[index + 1]);
158  if (ccp & 1)
159  asv2_put_level(a, &a->pb, block[index + 9]);
160  }
161  }
162 }
163 
164 #define MAX_MB_SIZE (30 * 16 * 16 * 3 / 2 / 8)
165 
166 static inline int encode_mb(ASV1Context *a, int16_t block[6][64])
167 {
168  int i;
169 
170  av_assert0(a->pb.buf_end - a->pb.buf - (put_bits_count(&a->pb) >> 3) >= MAX_MB_SIZE);
171 
172  if (a->avctx->codec_id == AV_CODEC_ID_ASV1) {
173  for (i = 0; i < 6; i++)
175  } else {
176  for (i = 0; i < 6; i++) {
178  }
179  }
180  return 0;
181 }
182 
183 static inline void dct_get(ASV1Context *a, const AVFrame *frame,
184  int mb_x, int mb_y)
185 {
186  int16_t (*block)[64] = a->block;
187  int linesize = frame->linesize[0];
188  int i;
189 
190  uint8_t *ptr_y = frame->data[0] + (mb_y * 16 * linesize) + mb_x * 16;
191  uint8_t *ptr_cb = frame->data[1] + (mb_y * 8 * frame->linesize[1]) + mb_x * 8;
192  uint8_t *ptr_cr = frame->data[2] + (mb_y * 8 * frame->linesize[2]) + mb_x * 8;
193 
194  a->pdsp.get_pixels(block[0], ptr_y, linesize);
195  a->pdsp.get_pixels(block[1], ptr_y + 8, linesize);
196  a->pdsp.get_pixels(block[2], ptr_y + 8 * linesize, linesize);
197  a->pdsp.get_pixels(block[3], ptr_y + 8 * linesize + 8, linesize);
198  for (i = 0; i < 4; i++)
199  a->fdsp.fdct(block[i]);
200 
201  if (!(a->avctx->flags & AV_CODEC_FLAG_GRAY)) {
202  a->pdsp.get_pixels(block[4], ptr_cb, frame->linesize[1]);
203  a->pdsp.get_pixels(block[5], ptr_cr, frame->linesize[2]);
204  for (i = 4; i < 6; i++)
205  a->fdsp.fdct(block[i]);
206  }
207 }
208 
210  const AVFrame *pict, int *got_packet)
211 {
212  ASV1Context *const a = avctx->priv_data;
213  int size, ret;
214  int mb_x, mb_y;
215 
216  if (pict->width % 16 || pict->height % 16) {
217  AVFrame *clone = av_frame_alloc();
218  int i;
219 
220  if (!clone)
221  return AVERROR(ENOMEM);
222  clone->format = pict->format;
223  clone->width = FFALIGN(pict->width, 16);
224  clone->height = FFALIGN(pict->height, 16);
225  ret = av_frame_get_buffer(clone, 0);
226  if (ret < 0) {
227  av_frame_free(&clone);
228  return ret;
229  }
230 
231  ret = av_frame_copy(clone, pict);
232  if (ret < 0) {
233  av_frame_free(&clone);
234  return ret;
235  }
236 
237  for (i = 0; i<3; i++) {
238  int x, y;
239  int w = AV_CEIL_RSHIFT(pict->width, !!i);
240  int h = AV_CEIL_RSHIFT(pict->height, !!i);
241  int w2 = AV_CEIL_RSHIFT(clone->width, !!i);
242  int h2 = AV_CEIL_RSHIFT(clone->height, !!i);
243  for (y=0; y<h; y++)
244  for (x=w; x<w2; x++)
245  clone->data[i][x + y*clone->linesize[i]] =
246  clone->data[i][w - 1 + y*clone->linesize[i]];
247  for (y=h; y<h2; y++)
248  for (x=0; x<w2; x++)
249  clone->data[i][x + y*clone->linesize[i]] =
250  clone->data[i][x + (h-1)*clone->linesize[i]];
251  }
252  ret = encode_frame(avctx, pkt, clone, got_packet);
253 
254  av_frame_free(&clone);
255  return ret;
256  }
257 
258  if ((ret = ff_alloc_packet2(avctx, pkt, a->mb_height * a->mb_width * MAX_MB_SIZE +
259  AV_INPUT_BUFFER_MIN_SIZE, 0)) < 0)
260  return ret;
261 
262  init_put_bits(&a->pb, pkt->data, pkt->size);
263 
264  for (mb_y = 0; mb_y < a->mb_height2; mb_y++) {
265  for (mb_x = 0; mb_x < a->mb_width2; mb_x++) {
266  dct_get(a, pict, mb_x, mb_y);
267  encode_mb(a, a->block);
268  }
269  }
270 
271  if (a->mb_width2 != a->mb_width) {
272  mb_x = a->mb_width2;
273  for (mb_y = 0; mb_y < a->mb_height2; mb_y++) {
274  dct_get(a, pict, mb_x, mb_y);
275  encode_mb(a, a->block);
276  }
277  }
278 
279  if (a->mb_height2 != a->mb_height) {
280  mb_y = a->mb_height2;
281  for (mb_x = 0; mb_x < a->mb_width; mb_x++) {
282  dct_get(a, pict, mb_x, mb_y);
283  encode_mb(a, a->block);
284  }
285  }
286  emms_c();
287 
288  if (avctx->codec_id == AV_CODEC_ID_ASV1)
289  flush_put_bits(&a->pb);
290  else
291  flush_put_bits_le(&a->pb);
292  AV_WN32(put_bits_ptr(&a->pb), 0);
293  size = (put_bits_count(&a->pb) + 31) / 32;
294 
295  if (avctx->codec_id == AV_CODEC_ID_ASV1) {
296  a->bbdsp.bswap_buf((uint32_t *) pkt->data,
297  (uint32_t *) pkt->data, size);
298  }
299 
300  pkt->size = size * 4;
302  *got_packet = 1;
303 
304  return 0;
305 }
306 
308 {
309  ASV1Context *const a = avctx->priv_data;
310  int i;
311  const int scale = avctx->codec_id == AV_CODEC_ID_ASV1 ? 1 : 2;
312 
313  ff_asv_common_init(avctx);
314  ff_fdctdsp_init(&a->fdsp, avctx);
315  ff_pixblockdsp_init(&a->pdsp, avctx);
316 
317  if (avctx->global_quality <= 0)
318  avctx->global_quality = 4 * FF_QUALITY_SCALE;
319 
320  a->inv_qscale = (32 * scale * FF_QUALITY_SCALE +
321  avctx->global_quality / 2) / avctx->global_quality;
322 
323  avctx->extradata = av_mallocz(8);
324  if (!avctx->extradata)
325  return AVERROR(ENOMEM);
326  avctx->extradata_size = 8;
327  ((uint32_t *) avctx->extradata)[0] = av_le2ne32(a->inv_qscale);
328  ((uint32_t *) avctx->extradata)[1] = av_le2ne32(AV_RL32("ASUS"));
329 
330  for (i = 0; i < 64; i++) {
331  if (a->fdsp.fdct == ff_fdct_ifast) {
332  int q = 32LL * scale * ff_mpeg1_default_intra_matrix[i] * ff_aanscales[i];
333  a->q_intra_matrix[i] = (((int64_t)a->inv_qscale << 30) + q / 2) / q;
334  } else {
335  int q = 32 * scale * ff_mpeg1_default_intra_matrix[i];
336  a->q_intra_matrix[i] = ((a->inv_qscale << 16) + q / 2) / q;
337  }
338  }
339 
340  return 0;
341 }
342 
343 #if CONFIG_ASV1_ENCODER
345  .name = "asv1",
346  .long_name = NULL_IF_CONFIG_SMALL("ASUS V1"),
347  .type = AVMEDIA_TYPE_VIDEO,
348  .id = AV_CODEC_ID_ASV1,
349  .priv_data_size = sizeof(ASV1Context),
350  .init = encode_init,
351  .encode2 = encode_frame,
352  .pix_fmts = (const enum AVPixelFormat[]) { AV_PIX_FMT_YUV420P,
353  AV_PIX_FMT_NONE },
354  .caps_internal = FF_CODEC_CAP_INIT_THREADSAFE,
355 };
356 #endif
357 
358 #if CONFIG_ASV2_ENCODER
360  .name = "asv2",
361  .long_name = NULL_IF_CONFIG_SMALL("ASUS V2"),
362  .type = AVMEDIA_TYPE_VIDEO,
363  .id = AV_CODEC_ID_ASV2,
364  .priv_data_size = sizeof(ASV1Context),
365  .init = encode_init,
366  .encode2 = encode_frame,
367  .pix_fmts = (const enum AVPixelFormat[]) { AV_PIX_FMT_YUV420P,
368  AV_PIX_FMT_NONE },
369  .caps_internal = FF_CODEC_CAP_INIT_THREADSAFE,
370 };
371 #endif
const uint16_t ff_aanscales[64]
Definition: aandcttab.c:26
AAN (Arai, Agui and Nakajima) (I)DCT tables.
AVCodec ff_asv1_encoder
AVCodec ff_asv2_encoder
const uint8_t ff_asv_level_tab[7][2]
Definition: asv.c:51
const uint8_t ff_asv_dc_ccp_tab[8][2]
Definition: asv.c:55
const uint8_t ff_asv_scantab[64]
Definition: asv.c:32
const uint8_t ff_asv_ac_ccp_tab[16][2]
Definition: asv.c:60
const uint16_t ff_asv2_level_tab[63][2]
Definition: asv.c:67
av_cold void ff_asv_common_init(AVCodecContext *avctx)
Definition: asv.c:89
const uint8_t ff_asv_ccp_tab[17][2]
Definition: asv.c:43
ASUS V1/V2 encoder/decoder common data.
static void asv1_put_level(PutBitContext *pb, int level)
Definition: asvenc.c:37
static int encode_mb(ASV1Context *a, int16_t block[6][64])
Definition: asvenc.c:166
static void dct_get(ASV1Context *a, const AVFrame *frame, int mb_x, int mb_y)
Definition: asvenc.c:183
#define MAX_MB_SIZE
Definition: asvenc.c:164
static void asv1_encode_block(ASV1Context *a, int16_t block[64])
Definition: asvenc.c:65
static void asv2_encode_block(ASV1Context *a, int16_t block[64])
Definition: asvenc.c:111
static av_cold int encode_init(AVCodecContext *avctx)
Definition: asvenc.c:307
static int encode_frame(AVCodecContext *avctx, AVPacket *pkt, const AVFrame *pict, int *got_packet)
Definition: asvenc.c:209
static void asv2_put_level(ASV1Context *a, PutBitContext *pb, int level)
Definition: asvenc.c:49
Macro definitions for various function/variable attributes.
#define av_cold
Definition: attributes.h:88
uint8_t
#define av_assert2(cond)
assert() equivalent, that does lie in speed critical code.
Definition: avassert.h:64
#define av_assert0(cond)
assert() equivalent, that is always enabled.
Definition: avassert.h:37
Libavcodec external API header.
#define AV_RL32
Definition: intreadwrite.h:146
static av_cold int init(AVCodecContext *avctx)
Definition: avrndec.c:31
#define av_le2ne32(x)
Definition: bswap.h:96
#define av_clip_int8
Definition: common.h:131
#define AV_CEIL_RSHIFT(a, b)
Definition: common.h:58
long long int64_t
Definition: coverity.c:34
void ff_fdct_ifast(int16_t *data)
Definition: jfdctfst.c:208
static AVFrame * frame
int ff_alloc_packet2(AVCodecContext *avctx, AVPacket *avpkt, int64_t size, int64_t min_size)
Check AVPacket size and/or allocate data.
Definition: encode.c:33
av_cold void ff_fdctdsp_init(FDCTDSPContext *c, AVCodecContext *avctx)
Definition: fdctdsp.c:26
#define AV_CODEC_FLAG_GRAY
Only decode/encode grayscale.
Definition: avcodec.h:308
@ AV_CODEC_ID_ASV1
Definition: codec_id.h:80
@ AV_CODEC_ID_ASV2
Definition: codec_id.h:81
#define AV_INPUT_BUFFER_MIN_SIZE
minimum encoding buffer size Used to avoid some checks during header writing.
Definition: avcodec.h:222
#define AV_PKT_FLAG_KEY
The packet contains a keyframe.
Definition: packet.h:410
#define FF_QUALITY_SCALE
Definition: avutil.h:230
#define AVERROR(e)
Definition: error.h:43
int av_frame_get_buffer(AVFrame *frame, int align)
Allocate new buffer(s) for audio or video data.
Definition: frame.c:337
void av_frame_free(AVFrame **frame)
Free the frame and any dynamically allocated objects in it, e.g.
Definition: frame.c:203
AVFrame * av_frame_alloc(void)
Allocate an AVFrame and set its fields to default values.
Definition: frame.c:190
int av_frame_copy(AVFrame *dst, const AVFrame *src)
Copy the frame data from src to dst.
Definition: frame.c:799
#define AV_LOG_WARNING
Something somehow does not look correct.
Definition: log.h:200
void * av_mallocz(size_t size)
Allocate a memory block with alignment suitable for all memory accesses (including vectors if availab...
Definition: mem.c:237
@ AVMEDIA_TYPE_VIDEO
Definition: avutil.h:201
int index
Definition: gxfenc.c:89
for(j=16;j >0;--j)
int i
Definition: input.c:407
#define AV_WN32(p, v)
Definition: intreadwrite.h:376
static void put_bits(Jpeg2000EncoderContext *s, int val, int n)
put n times val bit
Definition: j2kenc.c:218
#define FF_CODEC_CAP_INIT_THREADSAFE
The codec does not modify any global variables in the init function, allowing to call the init functi...
Definition: internal.h:41
av_cold void ff_pixblockdsp_init(PixblockDSPContext *c, AVCodecContext *avctx)
Definition: pixblockdsp.c:81
common internal API header
#define NULL_IF_CONFIG_SMALL(x)
Return NULL if CONFIG_SMALL is true, otherwise the argument without modification.
Definition: internal.h:117
#define emms_c()
Definition: internal.h:54
static enum AVPixelFormat pix_fmts[]
Definition: libkvazaar.c:309
uint8_t w
Definition: llviddspenc.c:39
#define FFALIGN(x, a)
Definition: macros.h:48
Memory handling functions.
const uint16_t ff_mpeg1_default_intra_matrix[256]
Definition: mpeg12data.c:30
MPEG-1/2 tables.
AVPixelFormat
Pixel format.
Definition: pixfmt.h:64
@ AV_PIX_FMT_NONE
Definition: pixfmt.h:65
@ AV_PIX_FMT_YUV420P
planar YUV 4:2:0, 12bpp, (1 Cr & Cb sample per 2x2 Y samples)
Definition: pixfmt.h:66
static void put_sbits(PutBitContext *pb, int n, int32_t value)
Definition: put_bits.h:253
static void init_put_bits(PutBitContext *s, uint8_t *buffer, int buffer_size)
Initialize the PutBitContext s.
Definition: put_bits.h:57
static void put_bits_le(PutBitContext *s, int n, BitBuf value)
Definition: put_bits.h:225
static void flush_put_bits_le(PutBitContext *s)
Definition: put_bits.h:131
static uint8_t * put_bits_ptr(PutBitContext *s)
Return the pointer to the byte where the bitstream writer will put the next bit.
Definition: put_bits.h:342
static int put_bits_count(PutBitContext *s)
Definition: put_bits.h:76
static void flush_put_bits(PutBitContext *s)
Pad the end of the output stream with zeros.
Definition: put_bits.h:110
main external API structure.
Definition: avcodec.h:536
int global_quality
Global quality for codecs which cannot change it per frame.
Definition: avcodec.h:602
uint8_t * extradata
some codecs need / can use extradata like Huffman tables.
Definition: avcodec.h:637
enum AVCodecID codec_id
Definition: avcodec.h:546
int extradata_size
Definition: avcodec.h:638
void * priv_data
Definition: avcodec.h:563
AVCodec.
Definition: codec.h:197
const char * name
Name of the codec implementation.
Definition: codec.h:204
This structure describes decoded (raw) audio or video data.
Definition: frame.h:318
uint8_t * data[AV_NUM_DATA_POINTERS]
pointer to the picture/channel planes.
Definition: frame.h:332
int width
Definition: frame.h:376
int height
Definition: frame.h:376
int linesize[AV_NUM_DATA_POINTERS]
For video, size in bytes of each picture line.
Definition: frame.h:349
int format
format of the frame, -1 if unknown or unset Values correspond to enum AVPixelFormat for video frames,...
Definition: frame.h:391
This structure stores compressed data.
Definition: packet.h:346
int flags
A combination of AV_PKT_FLAG values.
Definition: packet.h:375
int size
Definition: packet.h:370
uint8_t * data
Definition: packet.h:369
uint8_t level
Definition: svq3.c:206
#define av_log(a,...)
static int16_t block[64]
Definition: dct.c:116
AVPacket * pkt
Definition: movenc.c:59
int size