FFmpeg
 All Data Structures Namespaces Files Functions Variables Typedefs Enumerations Enumerator Macros Groups Pages
vaapi_encode_mjpeg.c
Go to the documentation of this file.
1 /*
2  * This file is part of FFmpeg.
3  *
4  * FFmpeg is free software; you can redistribute it and/or
5  * modify it under the terms of the GNU Lesser General Public
6  * License as published by the Free Software Foundation; either
7  * version 2.1 of the License, or (at your option) any later version.
8  *
9  * FFmpeg is distributed in the hope that it will be useful,
10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12  * Lesser General Public License for more details.
13  *
14  * You should have received a copy of the GNU Lesser General Public
15  * License along with FFmpeg; if not, write to the Free Software
16  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
17  */
18 
19 #include <va/va.h>
20 #include <va/va_enc_jpeg.h>
21 
22 #include "libavutil/avassert.h"
23 #include "libavutil/common.h"
24 #include "libavutil/internal.h"
25 #include "libavutil/opt.h"
26 #include "libavutil/pixfmt.h"
27 
28 #include "avcodec.h"
29 #include "internal.h"
30 #include "jpegtables.h"
31 #include "mjpeg.h"
32 #include "put_bits.h"
33 #include "vaapi_encode.h"
34 
35 
36 // Standard JPEG quantisation tables, in zigzag order.
37 static const unsigned char vaapi_encode_mjpeg_quant_luminance[64] = {
38  16, 11, 12, 14, 12, 10, 16, 14,
39  13, 14, 18, 17, 16, 19, 24, 40,
40  26, 24, 22, 22, 24, 49, 35, 37,
41  29, 40, 58, 51, 61, 60, 57, 51,
42  56, 55, 64, 72, 92, 78, 64, 68,
43  87, 69, 55, 56, 80, 109, 81, 87,
44  95, 98, 103, 104, 103, 62, 77, 113,
45  121, 112, 100, 120, 92, 101, 103, 99,
46 };
47 static const unsigned char vaapi_encode_mjpeg_quant_chrominance[64] = {
48  17, 18, 18, 24, 21, 24, 47, 26,
49  26, 47, 99, 66, 56, 66, 99, 99,
50  99, 99, 99, 99, 99, 99, 99, 99,
51  99, 99, 99, 99, 99, 99, 99, 99,
52  99, 99, 99, 99, 99, 99, 99, 99,
53  99, 99, 99, 99, 99, 99, 99, 99,
54  99, 99, 99, 99, 99, 99, 99, 99,
55  99, 99, 99, 99, 99, 99, 99, 99,
56 };
57 
58 typedef struct VAAPIEncodeMJPEGContext {
59  int quality;
62 
63  VAQMatrixBufferJPEG quant_tables;
64  VAHuffmanTableBufferJPEGBaseline huffman_tables;
66 
67 static av_cold void vaapi_encode_mjpeg_copy_huffman(unsigned char *dst_lengths,
68  unsigned char *dst_values,
69  const unsigned char *src_lengths,
70  const unsigned char *src_values)
71 {
72  int i, mt;
73 
74  ++src_lengths;
75 
76  mt = 0;
77  for (i = 0; i < 16; i++)
78  mt += (dst_lengths[i] = src_lengths[i]);
79 
80  for (i = 0; i < mt; i++)
81  dst_values[i] = src_values[i];
82 }
83 
85 {
88  VAQMatrixBufferJPEG *quant = &priv->quant_tables;
89  VAHuffmanTableBufferJPEGBaseline *huff = &priv->huffman_tables;
90  int i;
91 
92  quant->load_lum_quantiser_matrix = 1;
93  quant->load_chroma_quantiser_matrix = 1;
94 
95  for (i = 0; i < 64; i++) {
96  quant->lum_quantiser_matrix[i] =
98  quant->chroma_quantiser_matrix[i] =
100  }
101 
102  huff->load_huffman_table[0] = 1;
103  vaapi_encode_mjpeg_copy_huffman(huff->huffman_table[0].num_dc_codes,
104  huff->huffman_table[0].dc_values,
107  vaapi_encode_mjpeg_copy_huffman(huff->huffman_table[0].num_ac_codes,
108  huff->huffman_table[0].ac_values,
111  memset(huff->huffman_table[0].pad, 0, sizeof(huff->huffman_table[0].pad));
112 
113  huff->load_huffman_table[1] = 1;
114  vaapi_encode_mjpeg_copy_huffman(huff->huffman_table[1].num_dc_codes,
115  huff->huffman_table[1].dc_values,
118  vaapi_encode_mjpeg_copy_huffman(huff->huffman_table[1].num_ac_codes,
119  huff->huffman_table[1].ac_values,
122  memset(huff->huffman_table[1].pad, 0, sizeof(huff->huffman_table[1].pad));
123 }
124 
125 static void vaapi_encode_mjpeg_write_marker(PutBitContext *pbc, int marker)
126 {
127  put_bits(pbc, 8, 0xff);
128  put_bits(pbc, 8, marker);
129 }
130 
132  VAAPIEncodePicture *pic,
133  VAAPIEncodeSlice *slice,
134  char *data, size_t *data_len)
135 {
136  VAAPIEncodeContext *ctx = avctx->priv_data;
137  VAEncPictureParameterBufferJPEG *vpic = pic->codec_picture_params;
138  VAEncSliceParameterBufferJPEG *vslice = slice->codec_slice_params;
139  VAAPIEncodeMJPEGContext *priv = ctx->priv_data;
140  PutBitContext pbc;
141  int t, i, quant_scale;
142 
143  init_put_bits(&pbc, data, *data_len);
144 
146 
147  // Quantisation table coefficients are scaled for quality by the driver,
148  // so we also need to do it ourselves here so that headers match.
149  if (priv->quality < 50)
150  quant_scale = 5000 / priv->quality;
151  else
152  quant_scale = 200 - 2 * priv->quality;
153 
154  for (t = 0; t < 2; t++) {
155  int q;
156 
158 
159  put_bits(&pbc, 16, 3 + 64); // Lq
160  put_bits(&pbc, 4, 0); // Pq
161  put_bits(&pbc, 4, t); // Tq
162 
163  for (i = 0; i < 64; i++) {
164  q = i[t ? priv->quant_tables.chroma_quantiser_matrix
165  : priv->quant_tables.lum_quantiser_matrix];
166  q = (q * quant_scale) / 100;
167  if (q < 1) q = 1;
168  if (q > 255) q = 255;
169  put_bits(&pbc, 8, q);
170  }
171  }
172 
174 
175  put_bits(&pbc, 16, 8 + 3 * vpic->num_components); // Lf
176  put_bits(&pbc, 8, vpic->sample_bit_depth); // P
177  put_bits(&pbc, 16, vpic->picture_height); // Y
178  put_bits(&pbc, 16, vpic->picture_width); // X
179  put_bits(&pbc, 8, vpic->num_components); // Nf
180 
181  for (i = 0; i < vpic->num_components; i++) {
182  put_bits(&pbc, 8, vpic->component_id[i]); // Ci
183  put_bits(&pbc, 4, priv->component_subsample_h[i]); // Hi
184  put_bits(&pbc, 4, priv->component_subsample_v[i]); // Vi
185  put_bits(&pbc, 8, vpic->quantiser_table_selector[i]); // Tqi
186  }
187 
188  for (t = 0; t < 4; t++) {
189  int mt;
190  unsigned char *lengths, *values;
191 
193 
194  if ((t & 1) == 0) {
195  lengths = priv->huffman_tables.huffman_table[t / 2].num_dc_codes;
196  values = priv->huffman_tables.huffman_table[t / 2].dc_values;
197  } else {
198  lengths = priv->huffman_tables.huffman_table[t / 2].num_ac_codes;
199  values = priv->huffman_tables.huffman_table[t / 2].ac_values;
200  }
201 
202  mt = 0;
203  for (i = 0; i < 16; i++)
204  mt += lengths[i];
205 
206  put_bits(&pbc, 16, 2 + 17 + mt); // Lh
207  put_bits(&pbc, 4, t & 1); // Tc
208  put_bits(&pbc, 4, t / 2); // Th
209 
210  for (i = 0; i < 16; i++)
211  put_bits(&pbc, 8, lengths[i]);
212  for (i = 0; i < mt; i++)
213  put_bits(&pbc, 8, values[i]);
214  }
215 
217 
218  av_assert0(vpic->num_components == vslice->num_components);
219 
220  put_bits(&pbc, 16, 6 + 2 * vslice->num_components); // Ls
221  put_bits(&pbc, 8, vslice->num_components); // Ns
222 
223  for (i = 0; i < vslice->num_components; i++) {
224  put_bits(&pbc, 8, vslice->components[i].component_selector); // Csj
225  put_bits(&pbc, 4, vslice->components[i].dc_table_selector); // Tdj
226  put_bits(&pbc, 4, vslice->components[i].ac_table_selector); // Taj
227  }
228 
229  put_bits(&pbc, 8, 0); // Ss
230  put_bits(&pbc, 8, 63); // Se
231  put_bits(&pbc, 4, 0); // Ah
232  put_bits(&pbc, 4, 0); // Al
233 
234  *data_len = put_bits_count(&pbc);
235  flush_put_bits(&pbc);
236 
237  return 0;
238 }
239 
241  VAAPIEncodePicture *pic,
242  int index, int *type,
243  char *data, size_t *data_len)
244 {
245  VAAPIEncodeContext *ctx = avctx->priv_data;
246  VAAPIEncodeMJPEGContext *priv = ctx->priv_data;
247 
248  if (index == 0) {
249  // Write quantisation tables.
250  if (*data_len < sizeof(priv->quant_tables))
251  return AVERROR(EINVAL);
252  *type = VAQMatrixBufferType;
253  memcpy(data, &priv->quant_tables,
254  *data_len = sizeof(priv->quant_tables));
255 
256  } else if (index == 1) {
257  // Write huffman tables.
258  if (*data_len < sizeof(priv->huffman_tables))
259  return AVERROR(EINVAL);
260  *type = VAHuffmanTableBufferType;
261  memcpy(data, &priv->huffman_tables,
262  *data_len = sizeof(priv->huffman_tables));
263 
264  } else {
265  return AVERROR_EOF;
266  }
267  return 0;
268 }
269 
271  VAAPIEncodePicture *pic)
272 {
273  VAAPIEncodeContext *ctx = avctx->priv_data;
274  VAEncPictureParameterBufferJPEG *vpic = pic->codec_picture_params;
275  VAAPIEncodeMJPEGContext *priv = ctx->priv_data;
276 
277  vpic->reconstructed_picture = pic->recon_surface;
278  vpic->coded_buf = pic->output_buffer;
279 
280  vpic->picture_width = avctx->width;
281  vpic->picture_height = avctx->height;
282 
283  vpic->pic_flags.bits.profile = 0;
284  vpic->pic_flags.bits.progressive = 0;
285  vpic->pic_flags.bits.huffman = 1;
286  vpic->pic_flags.bits.interleaved = 0;
287  vpic->pic_flags.bits.differential = 0;
288 
289  vpic->sample_bit_depth = 8;
290  vpic->num_scan = 1;
291 
292  vpic->num_components = 3;
293 
294  vpic->component_id[0] = 1;
295  vpic->component_id[1] = 2;
296  vpic->component_id[2] = 3;
297 
298  priv->component_subsample_h[0] = 2;
299  priv->component_subsample_v[0] = 2;
300  priv->component_subsample_h[1] = 1;
301  priv->component_subsample_v[1] = 1;
302  priv->component_subsample_h[2] = 1;
303  priv->component_subsample_v[2] = 1;
304 
305  vpic->quantiser_table_selector[0] = 0;
306  vpic->quantiser_table_selector[1] = 1;
307  vpic->quantiser_table_selector[2] = 1;
308 
309  vpic->quality = priv->quality;
310 
311  pic->nb_slices = 1;
312 
313  return 0;
314 }
315 
317  VAAPIEncodePicture *pic,
318  VAAPIEncodeSlice *slice)
319 {
320  VAEncPictureParameterBufferJPEG *vpic = pic->codec_picture_params;
321  VAEncSliceParameterBufferJPEG *vslice = slice->codec_slice_params;
322  int i;
323 
324  vslice->restart_interval = 0;
325 
326  vslice->num_components = vpic->num_components;
327  for (i = 0; i < vslice->num_components; i++) {
328  vslice->components[i].component_selector = i + 1;
329  vslice->components[i].dc_table_selector = (i > 0);
330  vslice->components[i].ac_table_selector = (i > 0);
331  }
332 
333  return 0;
334 }
335 
337 {
338  VAAPIEncodeContext *ctx = avctx->priv_data;
339  VAAPIEncodeMJPEGContext *priv = ctx->priv_data;
340 
341  priv->quality = avctx->global_quality;
342  if (priv->quality < 1 || priv->quality > 100) {
343  av_log(avctx, AV_LOG_ERROR, "Invalid quality value %d "
344  "(must be 1-100).\n", priv->quality);
345  return AVERROR(EINVAL);
346  }
347 
348  // Hack: the implementation calls the JPEG image header (which we
349  // will use in the same way as a slice header) generic "raw data".
350  // Therefore, if after the packed header capability check we have
351  // PACKED_HEADER_RAW_DATA available, rewrite it as
352  // PACKED_HEADER_SLICE so that the header-writing code can do the
353  // right thing.
354  if (ctx->va_packed_headers & VA_ENC_PACKED_HEADER_RAW_DATA) {
355  ctx->va_packed_headers &= ~VA_ENC_PACKED_HEADER_RAW_DATA;
356  ctx->va_packed_headers |= VA_ENC_PACKED_HEADER_SLICE;
357  }
358 
360 
361  return 0;
362 }
363 
366 
367  .configure = &vaapi_encode_mjpeg_configure,
368 
369  .picture_params_size = sizeof(VAEncPictureParameterBufferJPEG),
370  .init_picture_params = &vaapi_encode_mjpeg_init_picture_params,
371 
372  .slice_params_size = sizeof(VAEncSliceParameterBufferJPEG),
373  .init_slice_params = &vaapi_encode_mjpeg_init_slice_params,
374 
375  .slice_header_type = VAEncPackedHeaderRawData,
376  .write_slice_header = &vaapi_encode_mjpeg_write_image_header,
377 
378  .write_extra_buffer = &vaapi_encode_mjpeg_write_extra_buffer,
379 };
380 
382 {
383  VAAPIEncodeContext *ctx = avctx->priv_data;
384 
386 
387  ctx->va_profile = VAProfileJPEGBaseline;
388  ctx->va_entrypoint = VAEntrypointEncPicture;
389 
390  ctx->va_rt_format = VA_RT_FORMAT_YUV420;
391 
392  ctx->va_rc_mode = VA_RC_CQP;
393 
394  // The JPEG image header - see note above.
395  ctx->va_packed_headers =
396  VA_ENC_PACKED_HEADER_RAW_DATA;
397 
398  ctx->surface_width = FFALIGN(avctx->width, 8);
399  ctx->surface_height = FFALIGN(avctx->height, 8);
400 
401  return ff_vaapi_encode_init(avctx);
402 }
403 
405  { "global_quality", "80" },
406  { NULL },
407 };
408 
410  .class_name = "mjpeg_vaapi",
411  .item_name = av_default_item_name,
412  .version = LIBAVUTIL_VERSION_INT,
413 };
414 
416  .name = "mjpeg_vaapi",
417  .long_name = NULL_IF_CONFIG_SMALL("MJPEG (VAAPI)"),
418  .type = AVMEDIA_TYPE_VIDEO,
419  .id = AV_CODEC_ID_MJPEG,
420  .priv_data_size = sizeof(VAAPIEncodeContext),
422  .encode2 = &ff_vaapi_encode2,
423  .close = &ff_vaapi_encode_close,
424  .priv_class = &vaapi_encode_mjpeg_class,
425  .defaults = vaapi_encode_mjpeg_defaults,
426  .pix_fmts = (const enum AVPixelFormat[]) {
429  },
430 };
#define NULL
Definition: coverity.c:32
VAProfile va_profile
Definition: vaapi_encode.h:98
VAEntrypoint va_entrypoint
Definition: vaapi_encode.h:100
ptrdiff_t const GLvoid * data
Definition: opengl_enc.c:101
Definition: mjpeg.h:73
static void put_bits(Jpeg2000EncoderContext *s, int val, int n)
put n times val bit
Definition: j2kenc.c:206
#define LIBAVUTIL_VERSION_INT
Definition: version.h:85
av_cold int ff_vaapi_encode_init(AVCodecContext *avctx)
static av_cold int init(AVCodecContext *avctx)
Definition: avrndec.c:35
static int vaapi_encode_mjpeg_write_extra_buffer(AVCodecContext *avctx, VAAPIEncodePicture *pic, int index, int *type, char *data, size_t *data_len)
av_cold int ff_vaapi_encode_close(AVCodecContext *avctx)
size_t priv_data_size
Definition: vaapi_encode.h:214
AVCodec.
Definition: avcodec.h:3681
MJPEG encoder and decoder.
static const unsigned char vaapi_encode_mjpeg_quant_chrominance[64]
unsigned int va_packed_headers
Definition: vaapi_encode.h:107
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:72
#define av_assert0(cond)
assert() equivalent, that is always enabled.
Definition: avassert.h:37
Definition: mjpeg.h:72
#define av_cold
Definition: attributes.h:82
AVOptions.
const uint8_t avpriv_mjpeg_bits_dc_luminance[17]
Definition: jpegtables.c:65
static av_cold void vaapi_encode_mjpeg_init_tables(AVCodecContext *avctx)
#define AVERROR_EOF
End of file.
Definition: error.h:55
VASurfaceID recon_surface
Definition: vaapi_encode.h:73
#define FFALIGN(x, a)
Definition: macros.h:48
#define av_log(a,...)
unsigned int va_rc_mode
Definition: vaapi_encode.h:104
#define AV_LOG_ERROR
Something went wrong and cannot losslessly be recovered.
Definition: log.h:176
av_default_item_name
#define AVERROR(e)
Definition: error.h:43
const uint8_t avpriv_mjpeg_bits_dc_chrominance[17]
Definition: jpegtables.c:70
int ff_vaapi_encode2(AVCodecContext *avctx, AVPacket *pkt, const AVFrame *input_image, int *got_packet)
Definition: vaapi_encode.c:831
#define NULL_IF_CONFIG_SMALL(x)
Return NULL if CONFIG_SMALL is true, otherwise the argument without modification. ...
Definition: internal.h:179
static av_cold void vaapi_encode_mjpeg_copy_huffman(unsigned char *dst_lengths, unsigned char *dst_values, const unsigned char *src_lengths, const unsigned char *src_values)
simple assert() macros that are a bit more flexible than ISO C assert().
const char * name
Name of the codec implementation.
Definition: avcodec.h:3688
VAHuffmanTableBufferJPEGBaseline huffman_tables
void * codec_picture_params
Definition: vaapi_encode.h:82
Definition: mjpeg.h:39
Definition: mjpeg.h:70
static int put_bits_count(PutBitContext *s)
Definition: put_bits.h:85
static const unsigned char vaapi_encode_mjpeg_quant_luminance[64]
common internal API header
AVCodec ff_mjpeg_vaapi_encoder
Definition: mjpeg.h:56
static av_cold int vaapi_encode_mjpeg_configure(AVCodecContext *avctx)
int width
picture width / height.
Definition: avcodec.h:1919
AVFormatContext * ctx
Definition: movenc.c:48
unsigned int va_rt_format
Definition: vaapi_encode.h:102
static int vaapi_encode_mjpeg_write_image_header(AVCodecContext *avctx, VAAPIEncodePicture *pic, VAAPIEncodeSlice *slice, char *data, size_t *data_len)
VAQMatrixBufferJPEG quant_tables
static const AVCodecDefault vaapi_encode_mjpeg_defaults[]
static const AVClass vaapi_encode_mjpeg_class
const struct VAAPIEncodeType * codec
Definition: vaapi_encode.h:95
Libavcodec external API header.
main external API structure.
Definition: avcodec.h:1732
GLint GLenum type
Definition: opengl_enc.c:105
const uint8_t avpriv_mjpeg_val_dc[12]
Definition: jpegtables.c:67
Describe the class of an AVClass context structure.
Definition: log.h:67
int index
Definition: gxfenc.c:89
const uint8_t avpriv_mjpeg_bits_ac_chrominance[17]
Definition: jpegtables.c:99
static enum AVPixelFormat pix_fmts[]
Definition: libkvazaar.c:262
const uint8_t * quant
const uint8_t avpriv_mjpeg_val_ac_chrominance[]
Definition: jpegtables.c:102
static void vaapi_encode_mjpeg_write_marker(PutBitContext *pbc, int marker)
int global_quality
Global quality for codecs which cannot change it per frame.
Definition: avcodec.h:1813
static int vaapi_encode_mjpeg_init_picture_params(AVCodecContext *avctx, VAAPIEncodePicture *pic)
static int vaapi_encode_mjpeg_init_slice_params(AVCodecContext *avctx, VAAPIEncodePicture *pic, VAAPIEncodeSlice *slice)
common internal api header.
static void flush_put_bits(PutBitContext *s)
Pad the end of the output stream with zeros.
Definition: put_bits.h:101
common internal and external API header
static VAAPIEncodeType vaapi_encode_type_mjpeg
static void init_put_bits(PutBitContext *s, uint8_t *buffer, int buffer_size)
Initialize the PutBitContext s.
Definition: put_bits.h:48
const uint8_t avpriv_mjpeg_bits_ac_luminance[17]
Definition: jpegtables.c:73
void * priv_data
Definition: avcodec.h:1774
pixel format definitions
const uint8_t avpriv_mjpeg_val_ac_luminance[]
Definition: jpegtables.c:75
void * codec_slice_params
Definition: vaapi_encode.h:54
static av_cold int vaapi_encode_mjpeg_init(AVCodecContext *avctx)
static const AVCodecDefault defaults[]
Definition: dcaenc.c:1095
VABufferID output_buffer
Definition: vaapi_encode.h:79
AVPixelFormat
Pixel format.
Definition: pixfmt.h:60
bitstream writer API