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qsvenc_hevc.c
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1 /*
2  * Intel MediaSDK QSV based HEVC encoder
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 #include <stdint.h>
23 #include <sys/types.h>
24 
25 #include <mfx/mfxvideo.h>
26 
27 #include "libavutil/common.h"
28 #include "libavutil/opt.h"
29 
30 #include "avcodec.h"
31 #include "bytestream.h"
32 #include "get_bits.h"
33 #include "hevc.h"
34 #include "h2645_parse.h"
35 #include "internal.h"
36 #include "qsv.h"
37 #include "qsv_internal.h"
38 #include "qsvenc.h"
39 
40 enum LoadPlugin {
44 };
45 
46 typedef struct QSVHEVCEncContext {
47  AVClass *class;
51 
53 {
54  GetByteContext gbc;
55  PutByteContext pbc;
56 
57  GetBitContext gb;
58  H2645NAL sps_nal = { NULL };
59  HEVCSPS sps = { 0 };
60  HEVCVPS vps = { 0 };
61  uint8_t vps_buf[128], vps_rbsp_buf[128];
62  uint8_t *new_extradata;
63  unsigned int sps_id;
64  int ret, i, type, vps_size;
65 
66  if (!avctx->extradata_size) {
67  av_log(avctx, AV_LOG_ERROR, "No extradata returned from libmfx\n");
68  return AVERROR_UNKNOWN;
69  }
70 
71  /* parse the SPS */
72  ret = ff_h2645_extract_rbsp(avctx->extradata + 4, avctx->extradata_size - 4, &sps_nal, 1);
73  if (ret < 0) {
74  av_log(avctx, AV_LOG_ERROR, "Error unescaping the SPS buffer\n");
75  return ret;
76  }
77 
78  ret = init_get_bits8(&gb, sps_nal.data, sps_nal.size);
79  if (ret < 0) {
80  av_freep(&sps_nal.rbsp_buffer);
81  return ret;
82  }
83 
84  get_bits(&gb, 1);
85  type = get_bits(&gb, 6);
86  if (type != NAL_SPS) {
87  av_log(avctx, AV_LOG_ERROR, "Unexpected NAL type in the extradata: %d\n",
88  type);
89  av_freep(&sps_nal.rbsp_buffer);
90  return AVERROR_INVALIDDATA;
91  }
92  get_bits(&gb, 9);
93 
94  ret = ff_hevc_parse_sps(&sps, &gb, &sps_id, 0, NULL, avctx);
95  av_freep(&sps_nal.rbsp_buffer);
96  if (ret < 0) {
97  av_log(avctx, AV_LOG_ERROR, "Error parsing the SPS\n");
98  return ret;
99  }
100 
101  /* generate the VPS */
102  vps.vps_max_layers = 1;
104  memcpy(&vps.ptl, &sps.ptl, sizeof(vps.ptl));
106  for (i = 0; i < MAX_SUB_LAYERS; i++) {
110  }
111 
112  vps.vps_num_layer_sets = 1;
118 
119  /* generate the encoded RBSP form of the VPS */
120  ret = ff_hevc_encode_nal_vps(&vps, sps.vps_id, vps_rbsp_buf, sizeof(vps_rbsp_buf));
121  if (ret < 0) {
122  av_log(avctx, AV_LOG_ERROR, "Error writing the VPS\n");
123  return ret;
124  }
125 
126  /* escape and add the startcode */
127  bytestream2_init(&gbc, vps_rbsp_buf, ret);
128  bytestream2_init_writer(&pbc, vps_buf, sizeof(vps_buf));
129 
130  bytestream2_put_be32(&pbc, 1); // startcode
131  bytestream2_put_byte(&pbc, NAL_VPS << 1); // NAL
132  bytestream2_put_byte(&pbc, 1); // header
133 
134  while (bytestream2_get_bytes_left(&gbc)) {
135  uint32_t b = bytestream2_peek_be24(&gbc);
136  if (b <= 3) {
137  bytestream2_put_be24(&pbc, 3);
138  bytestream2_skip(&gbc, 2);
139  } else
140  bytestream2_put_byte(&pbc, bytestream2_get_byte(&gbc));
141  }
142 
143  vps_size = bytestream2_tell_p(&pbc);
144  new_extradata = av_mallocz(vps_size + avctx->extradata_size + AV_INPUT_BUFFER_PADDING_SIZE);
145  if (!new_extradata)
146  return AVERROR(ENOMEM);
147  memcpy(new_extradata, vps_buf, vps_size);
148  memcpy(new_extradata + vps_size, avctx->extradata, avctx->extradata_size);
149 
150  av_freep(&avctx->extradata);
151  avctx->extradata = new_extradata;
152  avctx->extradata_size += vps_size;
153 
154  return 0;
155 }
156 
158 {
159  QSVHEVCEncContext *q = avctx->priv_data;
160  int ret;
161 
162  if (q->load_plugin != LOAD_PLUGIN_NONE) {
163  static const char *uid_hevcenc_sw = "2fca99749fdb49aeb121a5b63ef568f7";
164  static const char *uid_hevcenc_hw = "6fadc791a0c2eb479ab6dcd5ea9da347";
165 
166  if (q->qsv.load_plugins[0]) {
167  av_log(avctx, AV_LOG_WARNING,
168  "load_plugins is not empty, but load_plugin is not set to 'none'."
169  "The load_plugin value will be ignored.\n");
170  } else {
172 
174  q->qsv.load_plugins = av_strdup(uid_hevcenc_sw);
175  else
176  q->qsv.load_plugins = av_strdup(uid_hevcenc_hw);
177 
178  if (!q->qsv.load_plugins)
179  return AVERROR(ENOMEM);
180  }
181  }
182 
183  ret = ff_qsv_enc_init(avctx, &q->qsv);
184  if (ret < 0)
185  return ret;
186 
187  ret = generate_fake_vps(&q->qsv, avctx);
188  if (ret < 0) {
189  ff_qsv_enc_close(avctx, &q->qsv);
190  return ret;
191  }
192 
193  return 0;
194 }
195 
197  const AVFrame *frame, int *got_packet)
198 {
199  QSVHEVCEncContext *q = avctx->priv_data;
200 
201  return ff_qsv_encode(avctx, &q->qsv, pkt, frame, got_packet);
202 }
203 
205 {
206  QSVHEVCEncContext *q = avctx->priv_data;
207 
208  return ff_qsv_enc_close(avctx, &q->qsv);
209 }
210 
211 #define OFFSET(x) offsetof(QSVHEVCEncContext, x)
212 #define VE AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_ENCODING_PARAM
213 static const AVOption options[] = {
215 
216  { "load_plugin", "A user plugin to load in an internal session", OFFSET(load_plugin), AV_OPT_TYPE_INT, { .i64 = LOAD_PLUGIN_HEVC_SW }, LOAD_PLUGIN_NONE, LOAD_PLUGIN_HEVC_HW, VE, "load_plugin" },
217  { "none", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = LOAD_PLUGIN_NONE }, 0, 0, VE, "load_plugin" },
218  { "hevc_sw", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = LOAD_PLUGIN_HEVC_SW }, 0, 0, VE, "load_plugin" },
219  { "hevc_hw", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = LOAD_PLUGIN_HEVC_HW }, 0, 0, VE, "load_plugin" },
220 
221  { "load_plugins", "A :-separate list of hexadecimal plugin UIDs to load in an internal session",
222  OFFSET(qsv.load_plugins), AV_OPT_TYPE_STRING, { .str = "" }, 0, 0, VE },
223 
224  { "profile", NULL, OFFSET(qsv.profile), AV_OPT_TYPE_INT, { .i64 = MFX_PROFILE_UNKNOWN }, 0, INT_MAX, VE, "profile" },
225  { "unknown", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = MFX_PROFILE_UNKNOWN }, INT_MIN, INT_MAX, VE, "profile" },
226  { "main", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = MFX_PROFILE_HEVC_MAIN }, INT_MIN, INT_MAX, VE, "profile" },
227  { "main10", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = MFX_PROFILE_HEVC_MAIN10 }, INT_MIN, INT_MAX, VE, "profile" },
228  { "mainsp", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = MFX_PROFILE_HEVC_MAINSP }, INT_MIN, INT_MAX, VE, "profile" },
229 
230  { NULL },
231 };
232 
233 static const AVClass class = {
234  .class_name = "hevc_qsv encoder",
235  .item_name = av_default_item_name,
236  .option = options,
238 };
239 
241  { "b", "1M" },
242  { "refs", "0" },
243  // same as the x264 default
244  { "g", "248" },
245  { "bf", "8" },
246 
247  { "flags", "+cgop" },
248 #if FF_API_PRIVATE_OPT
249  { "b_strategy", "-1" },
250 #endif
251  { NULL },
252 };
253 
255  .name = "hevc_qsv",
256  .long_name = NULL_IF_CONFIG_SMALL("HEVC (Intel Quick Sync Video acceleration)"),
257  .priv_data_size = sizeof(QSVHEVCEncContext),
259  .id = AV_CODEC_ID_HEVC,
260  .init = qsv_enc_init,
261  .encode2 = qsv_enc_frame,
262  .close = qsv_enc_close,
263  .capabilities = AV_CODEC_CAP_DELAY,
264  .pix_fmts = (const enum AVPixelFormat[]){ AV_PIX_FMT_NV12,
266  AV_PIX_FMT_NONE },
267  .priv_class = &class,
268  .defaults = qsv_enc_defaults,
269  .caps_internal = FF_CODEC_CAP_INIT_CLEANUP,
270 };
#define FF_CODEC_CAP_INIT_CLEANUP
The codec allows calling the close function for deallocation even if the init function returned a fai...
Definition: internal.h:48
#define NULL
Definition: coverity.c:32
#define AVERROR_INVALIDDATA
Invalid data found when processing input.
Definition: error.h:59
AVCodec ff_hevc_qsv_encoder
Definition: qsvenc_hevc.c:254
int ff_hevc_encode_nal_vps(HEVCVPS *vps, unsigned int id, uint8_t *buf, int buf_size)
Definition: hevc_ps_enc.c:66
This structure describes decoded (raw) audio or video data.
Definition: frame.h:184
AVOption.
Definition: opt.h:245
int size
Definition: h2645_parse.h:35
int vui_num_ticks_poc_diff_one_minus1
Definition: hevc.h:338
int max_dec_pic_buffering
Definition: hevc.h:422
static unsigned int get_bits(GetBitContext *s, int n)
Read 1-25 bits.
Definition: get_bits.h:247
#define AV_LOG_WARNING
Something somehow does not look correct.
Definition: log.h:182
#define LIBAVUTIL_VERSION_INT
Definition: version.h:85
static av_cold int init(AVCodecContext *avctx)
Definition: avrndec.c:35
int vps_num_ticks_poc_diff_one
vps_num_ticks_poc_diff_one_minus1 + 1
Definition: hevc.h:388
VUI vui
Definition: hevc.h:427
const char * b
Definition: vf_curves.c:113
static av_always_inline void bytestream2_init_writer(PutByteContext *p, uint8_t *buf, int buf_size)
Definition: bytestream.h:143
uint32_t vui_time_scale
Definition: hevc.h:336
static int generate_fake_vps(QSVEncContext *q, AVCodecContext *avctx)
Definition: qsvenc_hevc.c:52
static av_always_inline void bytestream2_init(GetByteContext *g, const uint8_t *buf, int buf_size)
Definition: bytestream.h:133
int max_latency_increase
Definition: hevc.h:424
void * av_mallocz(size_t size)
Allocate a memory block with alignment suitable for all memory accesses (including vectors if availab...
Definition: mem.c:252
static AVPacket pkt
AVCodec.
Definition: avcodec.h:3600
static int qsv_enc_frame(AVCodecContext *avctx, AVPacket *pkt, const AVFrame *frame, int *got_packet)
Definition: qsvenc_hevc.c:196
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_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:984
int ff_qsv_encode(AVCodecContext *avctx, QSVEncContext *q, AVPacket *pkt, const AVFrame *frame, int *got_packet)
Definition: qsvenc.c:1007
uint8_t
#define av_cold
Definition: attributes.h:82
unsigned int vps_num_reorder_pics[MAX_SUB_LAYERS]
Definition: hevc.h:380
AVOptions.
uint8_t vps_timing_info_present_flag
Definition: hevc.h:384
uint8_t * extradata
some codecs need / can use extradata like Huffman tables.
Definition: avcodec.h:1791
int vps_max_sub_layers
vps_max_temporal_layers_minus1 + 1
Definition: hevc.h:375
static AVFrame * frame
int ff_h2645_extract_rbsp(const uint8_t *src, int length, H2645NAL *nal, int small_padding)
Extract the raw (unescaped) bitstream.
Definition: h2645_parse.c:32
#define OFFSET(x)
Definition: qsvenc_hevc.c:211
#define QSV_COMMON_OPTS
Definition: qsvenc.h:50
bitstream reader API header.
int ff_qsv_enc_close(AVCodecContext *avctx, QSVEncContext *q)
Definition: qsvenc.c:1076
#define av_log(a,...)
QSVEncContext qsv
Definition: qsvenc_hevc.c:48
#define AV_LOG_ERROR
Something went wrong and cannot losslessly be recovered.
Definition: log.h:176
int vps_max_layers
Definition: hevc.h:374
av_default_item_name
#define AVERROR(e)
Definition: error.h:43
static av_always_inline void bytestream2_skip(GetByteContext *g, unsigned int size)
Definition: bytestream.h:164
int vui_timing_info_present_flag
Definition: hevc.h:334
char * load_plugins
Definition: qsvenc.h:141
#define NULL_IF_CONFIG_SMALL(x)
Return NULL if CONFIG_SMALL is true, otherwise the argument without modification. ...
Definition: internal.h:176
static av_always_inline unsigned int bytestream2_get_bytes_left(GetByteContext *g)
Definition: bytestream.h:154
planar YUV 4:2:0, 12bpp, 1 plane for Y and 1 plane for the UV components, which are interleaved (firs...
Definition: pixfmt.h:90
const char * name
Name of the codec implementation.
Definition: avcodec.h:3607
int vui_poc_proportional_to_timing_flag
Definition: hevc.h:337
static av_always_inline int bytestream2_tell_p(PutByteContext *p)
Definition: bytestream.h:193
uint32_t vps_num_units_in_tick
Definition: hevc.h:385
int vps_num_layer_sets
vps_num_layer_sets_minus1 + 1
Definition: hevc.h:383
static const AVCodecDefault qsv_enc_defaults[]
Definition: qsvenc_hevc.c:240
uint8_t vps_poc_proportional_to_timing_flag
Definition: hevc.h:387
Definition: hevc.h:112
unsigned vps_id
Definition: hevc.h:403
PTL ptl
Definition: hevc.h:377
uint32_t vps_time_scale
Definition: hevc.h:386
Definition: hevc.h:402
Definition: hevc.h:372
static av_cold int qsv_enc_close(AVCodecContext *avctx)
Definition: qsvenc_hevc.c:204
char * av_strdup(const char *s)
Duplicate a string.
Definition: mem.c:267
Libavcodec external API header.
PTL ptl
Definition: hevc.h:428
int max_sub_layers
Definition: hevc.h:420
static int init_get_bits8(GetBitContext *s, const uint8_t *buffer, int byte_size)
Initialize GetBitContext.
Definition: get_bits.h:437
main external API structure.
Definition: avcodec.h:1676
Definition: hevc.h:111
const uint8_t * data
Definition: h2645_parse.h:36
uint32_t vui_num_units_in_tick
Definition: hevc.h:335
GLint GLenum type
Definition: opengl_enc.c:105
int extradata_size
Definition: avcodec.h:1792
Describe the class of an AVClass context structure.
Definition: log.h:67
int ff_qsv_enc_init(AVCodecContext *avctx, QSVEncContext *q)
Definition: qsvenc.c:676
#define MAX_SUB_LAYERS
7.4.2.1
Definition: hevc.h:49
HW acceleration through QSV, data[3] contains a pointer to the mfxFrameSurface1 structure.
Definition: pixfmt.h:236
static enum AVPixelFormat pix_fmts[]
Definition: libkvazaar.c:262
struct HEVCSPS::@67 temporal_layer[MAX_SUB_LAYERS]
common internal api header.
common internal and external API header
#define AVERROR_UNKNOWN
Unknown error, typically from an external library.
Definition: error.h:71
#define AV_INPUT_BUFFER_PADDING_SIZE
Required number of additionally allocated bytes at the end of the input bitstream for decoding...
Definition: avcodec.h:734
void * priv_data
Definition: avcodec.h:1718
unsigned int vps_max_dec_pic_buffering[MAX_SUB_LAYERS]
Definition: hevc.h:379
unsigned int vps_max_latency_increase[MAX_SUB_LAYERS]
Definition: hevc.h:381
int ff_hevc_parse_sps(HEVCSPS *sps, GetBitContext *gb, unsigned int *sps_id, int apply_defdispwin, AVBufferRef **vps_list, AVCodecContext *avctx)
Parse the SPS from the bitstream into the provided HEVCSPS struct.
Definition: hevc_ps.c:826
static av_cold int qsv_enc_init(AVCodecContext *avctx)
Definition: qsvenc_hevc.c:157
uint8_t * rbsp_buffer
Definition: h2645_parse.h:32
#define VE
Definition: qsvenc_hevc.c:212
#define av_freep(p)
int num_reorder_pics
Definition: hevc.h:423
AVPixelFormat
Pixel format.
Definition: pixfmt.h:60
This structure stores compressed data.
Definition: avcodec.h:1578
LoadPlugin
Definition: qsvdec_h2645.c:38
int vps_sub_layer_ordering_info_present_flag
Definition: hevc.h:378
static const AVOption options[]
Definition: qsvenc_hevc.c:213