FFmpeg
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 "encode.h"
34 #include "fdctdsp.h"
35 #include "internal.h"
36 #include "mpeg12data.h"
37 
38 static inline void asv1_put_level(PutBitContext *pb, int level)
39 {
40  unsigned int index = level + 3;
41 
42  if (index <= 6) {
44  } else {
45  put_bits(pb, 3, 0); /* Escape code */
46  put_sbits(pb, 8, level);
47  }
48 }
49 
50 static inline void asv2_put_level(ASV1Context *a, PutBitContext *pb, int level)
51 {
52  unsigned int index = level + 31;
53 
54  if (index <= 62) {
56  } else {
57  put_bits_le(pb, 5, 0); /* Escape code */
58  if (level < -128 || level > 127) {
59  av_log(a->avctx, AV_LOG_WARNING, "Clipping level %d, increase qscale\n", level);
61  }
62  put_bits_le(pb, 8, level & 0xFF);
63  }
64 }
65 
66 static inline void asv1_encode_block(ASV1Context *a, int16_t block[64])
67 {
68  int i;
69  int nc_count = 0;
70 
71  put_bits(&a->pb, 8, (block[0] + 32) >> 6);
72  block[0] = 0;
73 
74  for (i = 0; i < 10; i++) {
75  const int index = ff_asv_scantab[4 * i];
76  int ccp = 0;
77 
78  if ((block[index + 0] = (block[index + 0] *
79  a->q_intra_matrix[index + 0] + (1 << 15)) >> 16))
80  ccp |= 8;
81  if ((block[index + 8] = (block[index + 8] *
82  a->q_intra_matrix[index + 8] + (1 << 15)) >> 16))
83  ccp |= 4;
84  if ((block[index + 1] = (block[index + 1] *
85  a->q_intra_matrix[index + 1] + (1 << 15)) >> 16))
86  ccp |= 2;
87  if ((block[index + 9] = (block[index + 9] *
88  a->q_intra_matrix[index + 9] + (1 << 15)) >> 16))
89  ccp |= 1;
90 
91  if (ccp) {
92  for (; nc_count; nc_count--)
93  put_bits(&a->pb, 2, 2); /* Skip */
94 
95  put_bits(&a->pb, ff_asv_ccp_tab[ccp][1], ff_asv_ccp_tab[ccp][0]);
96 
97  if (ccp & 8)
98  asv1_put_level(&a->pb, block[index + 0]);
99  if (ccp & 4)
100  asv1_put_level(&a->pb, block[index + 8]);
101  if (ccp & 2)
102  asv1_put_level(&a->pb, block[index + 1]);
103  if (ccp & 1)
104  asv1_put_level(&a->pb, block[index + 9]);
105  } else {
106  nc_count++;
107  }
108  }
109  put_bits(&a->pb, 5, 0xF); /* End of block */
110 }
111 
112 static inline void asv2_encode_block(ASV1Context *a, int16_t block[64])
113 {
114  int i;
115  int count = 0;
116 
117  for (count = 63; count > 3; count--) {
118  const int index = ff_asv_scantab[count];
119  if ((block[index] * a->q_intra_matrix[index] + (1 << 15)) >> 16)
120  break;
121  }
122 
123  count >>= 2;
124 
125  put_bits_le(&a->pb, 4, count);
126  put_bits_le(&a->pb, 8, (block[0] + 32) >> 6);
127  block[0] = 0;
128 
129  for (i = 0; i <= count; i++) {
130  const int index = ff_asv_scantab[4 * i];
131  int ccp = 0;
132 
133  if ((block[index + 0] = (block[index + 0] *
134  a->q_intra_matrix[index + 0] + (1 << 15)) >> 16))
135  ccp |= 8;
136  if ((block[index + 8] = (block[index + 8] *
137  a->q_intra_matrix[index + 8] + (1 << 15)) >> 16))
138  ccp |= 4;
139  if ((block[index + 1] = (block[index + 1] *
140  a->q_intra_matrix[index + 1] + (1 << 15)) >> 16))
141  ccp |= 2;
142  if ((block[index + 9] = (block[index + 9] *
143  a->q_intra_matrix[index + 9] + (1 << 15)) >> 16))
144  ccp |= 1;
145 
146  av_assert2(i || ccp < 8);
147  if (i)
148  put_bits_le(&a->pb, ff_asv_ac_ccp_tab[ccp][1], ff_asv_ac_ccp_tab[ccp][0]);
149  else
150  put_bits_le(&a->pb, ff_asv_dc_ccp_tab[ccp][1], ff_asv_dc_ccp_tab[ccp][0]);
151 
152  if (ccp) {
153  if (ccp & 8)
154  asv2_put_level(a, &a->pb, block[index + 0]);
155  if (ccp & 4)
156  asv2_put_level(a, &a->pb, block[index + 8]);
157  if (ccp & 2)
158  asv2_put_level(a, &a->pb, block[index + 1]);
159  if (ccp & 1)
160  asv2_put_level(a, &a->pb, block[index + 9]);
161  }
162  }
163 }
164 
165 #define MAX_MB_SIZE (30 * 16 * 16 * 3 / 2 / 8)
166 
167 static inline int encode_mb(ASV1Context *a, int16_t block[6][64])
168 {
169  int i;
170 
171  av_assert0(put_bytes_left(&a->pb, 0) >= MAX_MB_SIZE);
172 
173  if (a->avctx->codec_id == AV_CODEC_ID_ASV1) {
174  for (i = 0; i < 6; i++)
176  } else {
177  for (i = 0; i < 6; i++) {
179  }
180  }
181  return 0;
182 }
183 
184 static inline void dct_get(ASV1Context *a, const AVFrame *frame,
185  int mb_x, int mb_y)
186 {
187  int16_t (*block)[64] = a->block;
188  int linesize = frame->linesize[0];
189  int i;
190 
191  uint8_t *ptr_y = frame->data[0] + (mb_y * 16 * linesize) + mb_x * 16;
192  uint8_t *ptr_cb = frame->data[1] + (mb_y * 8 * frame->linesize[1]) + mb_x * 8;
193  uint8_t *ptr_cr = frame->data[2] + (mb_y * 8 * frame->linesize[2]) + mb_x * 8;
194 
195  a->pdsp.get_pixels(block[0], ptr_y, linesize);
196  a->pdsp.get_pixels(block[1], ptr_y + 8, linesize);
197  a->pdsp.get_pixels(block[2], ptr_y + 8 * linesize, linesize);
198  a->pdsp.get_pixels(block[3], ptr_y + 8 * linesize + 8, linesize);
199  for (i = 0; i < 4; i++)
200  a->fdsp.fdct(block[i]);
201 
202  if (!(a->avctx->flags & AV_CODEC_FLAG_GRAY)) {
203  a->pdsp.get_pixels(block[4], ptr_cb, frame->linesize[1]);
204  a->pdsp.get_pixels(block[5], ptr_cr, frame->linesize[2]);
205  for (i = 4; i < 6; i++)
206  a->fdsp.fdct(block[i]);
207  }
208 }
209 
211  const AVFrame *pict, int *got_packet)
212 {
213  ASV1Context *const a = avctx->priv_data;
214  int size, ret;
215  int mb_x, mb_y;
216 
217  if (pict->width % 16 || pict->height % 16) {
218  AVFrame *clone = av_frame_alloc();
219  int i;
220 
221  if (!clone)
222  return AVERROR(ENOMEM);
223  clone->format = pict->format;
224  clone->width = FFALIGN(pict->width, 16);
225  clone->height = FFALIGN(pict->height, 16);
226  ret = av_frame_get_buffer(clone, 0);
227  if (ret < 0) {
228  av_frame_free(&clone);
229  return ret;
230  }
231 
232  ret = av_frame_copy(clone, pict);
233  if (ret < 0) {
234  av_frame_free(&clone);
235  return ret;
236  }
237 
238  for (i = 0; i<3; i++) {
239  int x, y;
240  int w = AV_CEIL_RSHIFT(pict->width, !!i);
241  int h = AV_CEIL_RSHIFT(pict->height, !!i);
242  int w2 = AV_CEIL_RSHIFT(clone->width, !!i);
243  int h2 = AV_CEIL_RSHIFT(clone->height, !!i);
244  for (y=0; y<h; y++)
245  for (x=w; x<w2; x++)
246  clone->data[i][x + y*clone->linesize[i]] =
247  clone->data[i][w - 1 + y*clone->linesize[i]];
248  for (y=h; y<h2; y++)
249  for (x=0; x<w2; x++)
250  clone->data[i][x + y*clone->linesize[i]] =
251  clone->data[i][x + (h-1)*clone->linesize[i]];
252  }
253  ret = encode_frame(avctx, pkt, clone, got_packet);
254 
255  av_frame_free(&clone);
256  return ret;
257  }
258 
259  if ((ret = ff_alloc_packet(avctx, pkt, a->mb_height * a->mb_width * MAX_MB_SIZE +
261  return ret;
262 
263  init_put_bits(&a->pb, pkt->data, pkt->size);
264 
265  for (mb_y = 0; mb_y < a->mb_height2; mb_y++) {
266  for (mb_x = 0; mb_x < a->mb_width2; mb_x++) {
267  dct_get(a, pict, mb_x, mb_y);
268  encode_mb(a, a->block);
269  }
270  }
271 
272  if (a->mb_width2 != a->mb_width) {
273  mb_x = a->mb_width2;
274  for (mb_y = 0; mb_y < a->mb_height2; mb_y++) {
275  dct_get(a, pict, mb_x, mb_y);
276  encode_mb(a, a->block);
277  }
278  }
279 
280  if (a->mb_height2 != a->mb_height) {
281  mb_y = a->mb_height2;
282  for (mb_x = 0; mb_x < a->mb_width; mb_x++) {
283  dct_get(a, pict, mb_x, mb_y);
284  encode_mb(a, a->block);
285  }
286  }
287  emms_c();
288 
289  if (avctx->codec_id == AV_CODEC_ID_ASV1)
290  flush_put_bits(&a->pb);
291  else
292  flush_put_bits_le(&a->pb);
293  AV_WN32(put_bits_ptr(&a->pb), 0);
294  size = (put_bytes_output(&a->pb) + 3) / 4;
295 
296  if (avctx->codec_id == AV_CODEC_ID_ASV1) {
297  a->bbdsp.bswap_buf((uint32_t *) pkt->data,
298  (uint32_t *) pkt->data, size);
299  }
300 
301  pkt->size = size * 4;
303  *got_packet = 1;
304 
305  return 0;
306 }
307 
309 {
310  ASV1Context *const a = avctx->priv_data;
311  int i;
312  const int scale = avctx->codec_id == AV_CODEC_ID_ASV1 ? 1 : 2;
313 
314  ff_asv_common_init(avctx);
315  ff_fdctdsp_init(&a->fdsp, avctx);
316  ff_pixblockdsp_init(&a->pdsp, avctx);
317 
318  if (avctx->global_quality <= 0)
319  avctx->global_quality = 4 * FF_QUALITY_SCALE;
320 
321  a->inv_qscale = (32 * scale * FF_QUALITY_SCALE +
322  avctx->global_quality / 2) / avctx->global_quality;
323 
324  avctx->extradata = av_mallocz(8);
325  if (!avctx->extradata)
326  return AVERROR(ENOMEM);
327  avctx->extradata_size = 8;
328  ((uint32_t *) avctx->extradata)[0] = av_le2ne32(a->inv_qscale);
329  ((uint32_t *) avctx->extradata)[1] = av_le2ne32(AV_RL32("ASUS"));
330 
331  for (i = 0; i < 64; i++) {
332  if (a->fdsp.fdct == ff_fdct_ifast) {
333  int q = 32LL * scale * ff_mpeg1_default_intra_matrix[i] * ff_aanscales[i];
334  a->q_intra_matrix[i] = (((int64_t)a->inv_qscale << 30) + q / 2) / q;
335  } else {
336  int q = 32 * scale * ff_mpeg1_default_intra_matrix[i];
337  a->q_intra_matrix[i] = ((a->inv_qscale << 16) + q / 2) / q;
338  }
339  }
340 
341  return 0;
342 }
343 
344 #if CONFIG_ASV1_ENCODER
345 const AVCodec ff_asv1_encoder = {
346  .name = "asv1",
347  .long_name = NULL_IF_CONFIG_SMALL("ASUS V1"),
348  .type = AVMEDIA_TYPE_VIDEO,
349  .id = AV_CODEC_ID_ASV1,
350  .priv_data_size = sizeof(ASV1Context),
351  .init = encode_init,
352  .encode2 = encode_frame,
353  .pix_fmts = (const enum AVPixelFormat[]) { AV_PIX_FMT_YUV420P,
354  AV_PIX_FMT_NONE },
355  .caps_internal = FF_CODEC_CAP_INIT_THREADSAFE,
356 };
357 #endif
358 
359 #if CONFIG_ASV2_ENCODER
360 const AVCodec ff_asv2_encoder = {
361  .name = "asv2",
362  .long_name = NULL_IF_CONFIG_SMALL("ASUS V2"),
363  .type = AVMEDIA_TYPE_VIDEO,
364  .id = AV_CODEC_ID_ASV2,
365  .priv_data_size = sizeof(ASV1Context),
366  .init = encode_init,
367  .encode2 = encode_frame,
368  .pix_fmts = (const enum AVPixelFormat[]) { AV_PIX_FMT_YUV420P,
369  AV_PIX_FMT_NONE },
370  .caps_internal = FF_CODEC_CAP_INIT_THREADSAFE,
371 };
372 #endif
AVCodec
AVCodec.
Definition: codec.h:202
AV_LOG_WARNING
#define AV_LOG_WARNING
Something somehow does not look correct.
Definition: log.h:186
FF_CODEC_CAP_INIT_THREADSAFE
#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:42
ff_asv_dc_ccp_tab
const uint8_t ff_asv_dc_ccp_tab[8][2]
Definition: asv.c:55
AVPixelFormat
AVPixelFormat
Pixel format.
Definition: pixfmt.h:64
level
uint8_t level
Definition: svq3.c:204
asv1_put_level
static void asv1_put_level(PutBitContext *pb, int level)
Definition: asvenc.c:38
init
static av_cold int init(AVCodecContext *avctx)
Definition: avrndec.c:31
ff_asv_level_tab
const uint8_t ff_asv_level_tab[7][2]
Definition: asv.c:51
AVERROR
Filter the word “frame” indicates either a video frame or a group of audio as stored in an AVFrame structure Format for each input and each output the list of supported formats For video that means pixel format For audio that means channel sample they are references to shared objects When the negotiation mechanism computes the intersection of the formats supported at each end of a all references to both lists are replaced with a reference to the intersection And when a single format is eventually chosen for a link amongst the remaining all references to the list are updated That means that if a filter requires that its input and output have the same format amongst a supported all it has to do is use a reference to the same list of formats query_formats can leave some formats unset and return AVERROR(EAGAIN) to cause the negotiation mechanism toagain later. That can be used by filters with complex requirements to use the format negotiated on one link to set the formats supported on another. Frame references ownership and permissions
av_frame_get_buffer
int av_frame_get_buffer(AVFrame *frame, int align)
Allocate new buffer(s) for audio or video data.
Definition: frame.c:246
put_bytes_output
static int put_bytes_output(const PutBitContext *s)
Definition: put_bits.h:88
av_clip_int8
#define av_clip_int8
Definition: common.h:105
put_sbits
static void put_sbits(PutBitContext *pb, int n, int32_t value)
Definition: put_bits.h:280
init_put_bits
static void init_put_bits(PutBitContext *s, uint8_t *buffer, int buffer_size)
Initialize the PutBitContext s.
Definition: put_bits.h:61
av_frame_free
void av_frame_free(AVFrame **frame)
Free the frame and any dynamically allocated objects in it, e.g.
Definition: frame.c:112
AVFrame
This structure describes decoded (raw) audio or video data.
Definition: frame.h:303
put_bits
static void put_bits(Jpeg2000EncoderContext *s, int val, int n)
put n times val bit
Definition: j2kenc.c:220
index
fg index
Definition: ffmpeg_filter.c:168
AVFrame::width
int width
Definition: frame.h:361
w
uint8_t w
Definition: llviddspenc.c:38
FF_QUALITY_SCALE
#define FF_QUALITY_SCALE
Definition: avutil.h:230
internal.h
AVPacket::data
uint8_t * data
Definition: packet.h:373
encode.h
ff_pixblockdsp_init
av_cold void ff_pixblockdsp_init(PixblockDSPContext *c, AVCodecContext *avctx)
Definition: pixblockdsp.c:81
AV_PKT_FLAG_KEY
#define AV_PKT_FLAG_KEY
The packet contains a keyframe.
Definition: packet.h:425
AVFrame::data
uint8_t * data[AV_NUM_DATA_POINTERS]
pointer to the picture/channel planes.
Definition: frame.h:317
ff_asv2_level_tab
const uint16_t ff_asv2_level_tab[63][2]
Definition: asv.c:67
ff_asv_scantab
const uint8_t ff_asv_scantab[64]
Definition: asv.c:32
scale
static av_always_inline float scale(float x, float s)
Definition: vf_v360.c:1376
put_bytes_left
static int put_bytes_left(const PutBitContext *s, int round_up)
Definition: put_bits.h:134
av_frame_alloc
AVFrame * av_frame_alloc(void)
Allocate an AVFrame and set its fields to default values.
Definition: frame.c:99
encode_init
static av_cold int encode_init(AVCodecContext *avctx)
Definition: asvenc.c:308
pkt
AVPacket * pkt
Definition: movenc.c:59
av_cold
#define av_cold
Definition: attributes.h:90
dct.h
ff_fdctdsp_init
av_cold void ff_fdctdsp_init(FDCTDSPContext *c, AVCodecContext *avctx)
Definition: fdctdsp.c:26
ASV1Context
Definition: asv.h:42
AVCodecContext::extradata_size
int extradata_size
Definition: avcodec.h:485
AVCodecContext::global_quality
int global_quality
Global quality for codecs which cannot change it per frame.
Definition: avcodec.h:449
AV_CEIL_RSHIFT
#define AV_CEIL_RSHIFT(a, b)
Definition: common.h:51
av_assert0
#define av_assert0(cond)
assert() equivalent, that is always enabled.
Definition: avassert.h:37
asv.h
pix_fmts
static enum AVPixelFormat pix_fmts[]
Definition: libkvazaar.c:290
AV_INPUT_BUFFER_MIN_SIZE
#define AV_INPUT_BUFFER_MIN_SIZE
Definition: avcodec.h:185
encode_mb
static int encode_mb(ASV1Context *a, int16_t block[6][64])
Definition: asvenc.c:167
AV_PIX_FMT_YUV420P
@ AV_PIX_FMT_YUV420P
planar YUV 4:2:0, 12bpp, (1 Cr & Cb sample per 2x2 Y samples)
Definition: pixfmt.h:66
PutBitContext
Definition: put_bits.h:49
AVCodecContext::codec_id
enum AVCodecID codec_id
Definition: avcodec.h:393
ff_asv_ac_ccp_tab
const uint8_t ff_asv_ac_ccp_tab[16][2]
Definition: asv.c:60
ff_asv2_encoder
const AVCodec ff_asv2_encoder
aandcttab.h
ff_fdct_ifast
void ff_fdct_ifast(int16_t *data)
Definition: jfdctfst.c:208
flush_put_bits_le
static void flush_put_bits_le(PutBitContext *s)
Definition: put_bits.h:163
for
for(j=16;j >0;--j)
Definition: h264pred_template.c:469
dct_get
static void dct_get(ASV1Context *a, const AVFrame *frame, int mb_x, int mb_y)
Definition: asvenc.c:184
AV_CODEC_FLAG_GRAY
#define AV_CODEC_FLAG_GRAY
Only decode/encode grayscale.
Definition: avcodec.h:243
AVPacket::size
int size
Definition: packet.h:374
NULL_IF_CONFIG_SMALL
#define NULL_IF_CONFIG_SMALL(x)
Return NULL if CONFIG_SMALL is true, otherwise the argument without modification.
Definition: internal.h:117
AV_WN32
#define AV_WN32(p, v)
Definition: intreadwrite.h:376
av_frame_copy
int av_frame_copy(AVFrame *dst, const AVFrame *src)
Copy the frame data from src to dst.
Definition: frame.c:678
size
int size
Definition: twinvq_data.h:10344
AVFrame::format
int format
format of the frame, -1 if unknown or unset Values correspond to enum AVPixelFormat for video frames,...
Definition: frame.h:376
ff_asv1_encoder
const AVCodec ff_asv1_encoder
ff_mpeg1_default_intra_matrix
const uint16_t ff_mpeg1_default_intra_matrix[256]
Definition: mpeg12data.c:30
ff_asv_common_init
av_cold void ff_asv_common_init(AVCodecContext *avctx)
Definition: asv.c:89
a
The reader does not expect b to be semantically here and if the code is changed by maybe adding a a division or other the signedness will almost certainly be mistaken To avoid this confusion a new type was SUINT is the C unsigned type but it holds a signed int to use the same example SUINT a
Definition: undefined.txt:41
attributes.h
AVPacket::flags
int flags
A combination of AV_PKT_FLAG values.
Definition: packet.h:379
AV_CODEC_ID_ASV1
@ AV_CODEC_ID_ASV1
Definition: codec_id.h:81
av_assert2
#define av_assert2(cond)
assert() equivalent, that does lie in speed critical code.
Definition: avassert.h:64
i
#define i(width, name, range_min, range_max)
Definition: cbs_h2645.c:271
AVCodecContext::extradata
uint8_t * extradata
some codecs need / can use extradata like Huffman tables.
Definition: avcodec.h:484
AV_CODEC_ID_ASV2
@ AV_CODEC_ID_ASV2
Definition: codec_id.h:82
av_le2ne32
#define av_le2ne32(x)
Definition: bswap.h:96
fdctdsp.h
av_mallocz
void * av_mallocz(size_t size)
Allocate a memory block with alignment suitable for all memory accesses (including vectors if availab...
Definition: mem.c:263
AVCodec::name
const char * name
Name of the codec implementation.
Definition: codec.h:209
encode_frame
static int encode_frame(AVCodecContext *avctx, AVPacket *pkt, const AVFrame *pict, int *got_packet)
Definition: asvenc.c:210
avcodec.h
ret
ret
Definition: filter_design.txt:187
frame
these buffered frames must be flushed immediately if a new input produces new the filter must not call request_frame to get more It must just process the frame or queue it The task of requesting more frames is left to the filter s request_frame method or the application If a filter has several the filter must be ready for frames arriving randomly on any input any filter with several inputs will most likely require some kind of queuing mechanism It is perfectly acceptable to have a limited queue and to drop frames when the inputs are too unbalanced request_frame For filters that do not use the this method is called when a frame is wanted on an output For a it should directly call filter_frame on the corresponding output For a if there are queued frames already one of these frames should be pushed If the filter should request a frame on one of its repeatedly until at least one frame has been pushed Return or at least make progress towards producing a frame
Definition: filter_design.txt:264
AV_RL32
uint64_t_TMPL AV_WL64 unsigned int_TMPL AV_RL32
Definition: bytestream.h:92
mpeg12data.h
AVCodecContext
main external API structure.
Definition: avcodec.h:383
AVFrame::height
int height
Definition: frame.h:361
put_bits_ptr
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:369
AV_PIX_FMT_NONE
@ AV_PIX_FMT_NONE
Definition: pixfmt.h:65
asv2_encode_block
static void asv2_encode_block(ASV1Context *a, int16_t block[64])
Definition: asvenc.c:112
AVMEDIA_TYPE_VIDEO
@ AVMEDIA_TYPE_VIDEO
Definition: avutil.h:201
mem.h
flush_put_bits
static void flush_put_bits(PutBitContext *s)
Pad the end of the output stream with zeros.
Definition: put_bits.h:142
ff_asv_ccp_tab
const uint8_t ff_asv_ccp_tab[17][2]
Definition: asv.c:43
FFALIGN
#define FFALIGN(x, a)
Definition: macros.h:78
asv2_put_level
static void asv2_put_level(ASV1Context *a, PutBitContext *pb, int level)
Definition: asvenc.c:50
AVCodecContext::priv_data
void * priv_data
Definition: avcodec.h:410
AVPacket
This structure stores compressed data.
Definition: packet.h:350
MAX_MB_SIZE
#define MAX_MB_SIZE
Definition: asvenc.c:165
AVFrame::linesize
int linesize[AV_NUM_DATA_POINTERS]
For video, size in bytes of each picture line.
Definition: frame.h:334
block
The exact code depends on how similar the blocks are and how related they are to the block
Definition: filter_design.txt:207
av_log
#define av_log(a,...)
Definition: tableprint_vlc.h:28
put_bits_le
static void put_bits_le(PutBitContext *s, int n, BitBuf value)
Definition: put_bits.h:252
h
h
Definition: vp9dsp_template.c:2038
ff_alloc_packet
int ff_alloc_packet(AVCodecContext *avctx, AVPacket *avpkt, int64_t size)
Check AVPacket size and allocate data.
Definition: encode.c:34
asv1_encode_block
static void asv1_encode_block(ASV1Context *a, int16_t block[64])
Definition: asvenc.c:66
ff_aanscales
const uint16_t ff_aanscales[64]
Definition: aandcttab.c:26