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FFmpeg/libavcodec/nvenc_h264.c

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  1. /*

  2.  * This file is part of Libav.

  3.  *

  4.  * Libav 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.  * Libav 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 Libav; if not, write to the Free Software

  16.  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA

  17.  */

  18. 

  19. #include "libavutil/internal.h"

  20. #include "libavutil/opt.h"

  21. 

  22. #include "avcodec.h"

  23. #include "internal.h"

  24. 

  25. #include "nvenc.h"

  26. 

  27. #define OFFSET(x) offsetof(NVENCContext, x)

  28. #define VE AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_ENCODING_PARAM

  29. static const AVOption options[] = {

  30.     { "preset",   "Set the encoding preset",              OFFSET(preset),      AV_OPT_TYPE_INT,    { .i64 = PRESET_MEDIUM }, PRESET_DEFAULT, PRESET_LOSSLESS_HP, VE, "preset" },

  31.     { "default",    "",                                   0,                   AV_OPT_TYPE_CONST,  { .i64 = PRESET_DEFAULT }, 0, 0, VE, "preset" },

  32.     { "slow",       "hq 2 passes",                        0,                   AV_OPT_TYPE_CONST,  { .i64 = PRESET_SLOW }, 0, 0, VE, "preset" },

  33.     { "medium",     "hq 1 pass",                          0,                   AV_OPT_TYPE_CONST,  { .i64 = PRESET_MEDIUM }, 0, 0, VE, "preset" },

  34.     { "fast",       "hp 1 pass",                          0,                   AV_OPT_TYPE_CONST,  { .i64 = PRESET_FAST }, 0, 0, VE, "preset" },

  35.     { "hp",         "",                                   0,                   AV_OPT_TYPE_CONST,  { .i64 = PRESET_HP }, 0, 0, VE, "preset" },

  36.     { "hq",         "",                                   0,                   AV_OPT_TYPE_CONST,  { .i64 = PRESET_HQ }, 0, 0, VE, "preset" },

  37.     { "bd",         "",                                   0,                   AV_OPT_TYPE_CONST,  { .i64 = PRESET_BD }, 0, 0, VE, "preset" },

  38.     { "ll",         "low latency",                        0,                   AV_OPT_TYPE_CONST,  { .i64 = PRESET_LOW_LATENCY_DEFAULT }, 0, 0, VE, "preset" },

  39.     { "llhq",       "low latency hq",                     0,                   AV_OPT_TYPE_CONST,  { .i64 = PRESET_LOW_LATENCY_HQ }, 0, 0, VE, "preset" },

  40.     { "llhp",       "low latency hp",                     0,                   AV_OPT_TYPE_CONST,  { .i64 = PRESET_LOW_LATENCY_HP }, 0, 0, VE, "preset" },

  41.     { "lossless",   NULL,                                 0,                   AV_OPT_TYPE_CONST,  { .i64 = PRESET_LOSSLESS_DEFAULT }, 0, 0, VE, "preset" },

  42.     { "losslesshp", NULL,                                 0,                   AV_OPT_TYPE_CONST,  { .i64 = PRESET_LOSSLESS_HP }, 0, 0, VE, "preset" },

  43.     { "profile",  "Set the encoding profile",             OFFSET(profile),     AV_OPT_TYPE_INT,    { .i64 = NV_ENC_H264_PROFILE_HIGH }, NV_ENC_H264_PROFILE_BASELINE, NV_ENC_H264_PROFILE_CONSTRAINED_HIGH, VE, "profile" },

  44.     { "baseline", "",                                     0,                   AV_OPT_TYPE_CONST,  { .i64 = NV_ENC_H264_PROFILE_BASELINE },            0, 0, VE, "profile" },

  45.     { "main",     "",                                     0,                   AV_OPT_TYPE_CONST,  { .i64 = NV_ENC_H264_PROFILE_MAIN },                0, 0, VE, "profile" },

  46.     { "high",     "",                                     0,                   AV_OPT_TYPE_CONST,  { .i64 = NV_ENC_H264_PROFILE_HIGH },                0, 0, VE, "profile" },

  47.     { "high_444", "",                                     0,                   AV_OPT_TYPE_CONST,  { .i64 = NV_ENC_H264_PROFILE_HIGH_444 },            0, 0, VE, "profile" },

  48.     { "constrained_high", "",                             0,                   AV_OPT_TYPE_CONST,  { .i64 = NV_ENC_H264_PROFILE_CONSTRAINED_HIGH },    0, 0, VE, "profile" },

  49.     { "level",    "Set the encoding level restriction",   OFFSET(level),       AV_OPT_TYPE_INT,    { .i64 = NV_ENC_LEVEL_AUTOSELECT }, NV_ENC_LEVEL_AUTOSELECT, NV_ENC_LEVEL_H264_51, VE, "level" },

  50.     { "1.0",      "",                                     0,                   AV_OPT_TYPE_CONST,  { .i64 = NV_ENC_LEVEL_H264_1 },  0, 0, VE,  "level" },

  51.     { "1.b",      "",                                     0,                   AV_OPT_TYPE_CONST,  { .i64 = NV_ENC_LEVEL_H264_1b }, 0, 0, VE,  "level" },

  52.     { "1.1",      "",                                     0,                   AV_OPT_TYPE_CONST,  { .i64 = NV_ENC_LEVEL_H264_11 }, 0, 0, VE,  "level" },

  53.     { "1.2",      "",                                     0,                   AV_OPT_TYPE_CONST,  { .i64 = NV_ENC_LEVEL_H264_12 }, 0, 0, VE,  "level" },

  54.     { "1.3",      "",                                     0,                   AV_OPT_TYPE_CONST,  { .i64 = NV_ENC_LEVEL_H264_13 }, 0, 0, VE,  "level" },

  55.     { "2.0",      "",                                     0,                   AV_OPT_TYPE_CONST,  { .i64 = NV_ENC_LEVEL_H264_2 },  0, 0, VE,  "level" },

  56.     { "2.1",      "",                                     0,                   AV_OPT_TYPE_CONST,  { .i64 = NV_ENC_LEVEL_H264_21 }, 0, 0, VE,  "level" },

  57.     { "2.2",      "",                                     0,                   AV_OPT_TYPE_CONST,  { .i64 = NV_ENC_LEVEL_H264_22 }, 0, 0, VE,  "level" },

  58.     { "3.0",      "",                                     0,                   AV_OPT_TYPE_CONST,  { .i64 = NV_ENC_LEVEL_H264_3 },  0, 0, VE,  "level" },

  59.     { "3.1",      "",                                     0,                   AV_OPT_TYPE_CONST,  { .i64 = NV_ENC_LEVEL_H264_31 }, 0, 0, VE,  "level" },

  60.     { "3.2",      "",                                     0,                   AV_OPT_TYPE_CONST,  { .i64 = NV_ENC_LEVEL_H264_32 }, 0, 0, VE,  "level" },

  61.     { "4.0",      "",                                     0,                   AV_OPT_TYPE_CONST,  { .i64 = NV_ENC_LEVEL_H264_4 },  0, 0, VE,  "level" },

  62.     { "4.1",      "",                                     0,                   AV_OPT_TYPE_CONST,  { .i64 = NV_ENC_LEVEL_H264_41 }, 0, 0, VE,  "level" },

  63.     { "4.2",      "",                                     0,                   AV_OPT_TYPE_CONST,  { .i64 = NV_ENC_LEVEL_H264_42 }, 0, 0, VE,  "level" },

  64.     { "5.0",      "",                                     0,                   AV_OPT_TYPE_CONST,  { .i64 = NV_ENC_LEVEL_H264_5 },  0, 0, VE,  "level" },

  65.     { "5.1",      "",                                     0,                   AV_OPT_TYPE_CONST,  { .i64 = NV_ENC_LEVEL_H264_51 }, 0, 0, VE,  "level" },

  66.     { "rc",       "Override the preset rate-control",     OFFSET(rc),          AV_OPT_TYPE_INT,    { .i64 = -1 },                   -1, INT_MAX, VE, "rc" },

  67.     { "constqp",          "Constant QP mode",                                                            0, AV_OPT_TYPE_CONST,  { .i64 = NV_ENC_PARAMS_RC_CONSTQP },              0, 0, VE, "rc" },

  68.     { "vbr",              "Variable bitrate mode",                                                       0, AV_OPT_TYPE_CONST,  { .i64 = NV_ENC_PARAMS_RC_VBR },                  0, 0, VE, "rc" },

  69.     { "cbr",              "Constant bitrate mode",                                                       0, AV_OPT_TYPE_CONST,  { .i64 = NV_ENC_PARAMS_RC_CBR },                  0, 0, VE, "rc" },

  70.     { "vbr_minqp",        "Variable bitrate mode with MinQP",                                            0, AV_OPT_TYPE_CONST,  { .i64 = NV_ENC_PARAMS_RC_VBR_MINQP },            0, 0, VE, "rc" },

  71.     { "ll_2pass_quality", "Multi-pass optimized for image quality (only for low-latency presets)",       0, AV_OPT_TYPE_CONST,  { .i64 = NV_ENC_PARAMS_RC_2_PASS_QUALITY },       0, 0, VE, "rc" },

  72.     { "ll_2pass_size",    "Multi-pass optimized for constant frame size (only for low-latency presets)", 0, AV_OPT_TYPE_CONST,  { .i64 = NV_ENC_PARAMS_RC_2_PASS_FRAMESIZE_CAP }, 0, 0, VE, "rc" },

  73.     { "vbr_2pass",        "Multi-pass variable bitrate mode",                                            0, AV_OPT_TYPE_CONST,  { .i64 = NV_ENC_PARAMS_RC_2_PASS_VBR },           0, 0, VE, "rc" },

  74.     { "surfaces", "Number of concurrent surfaces",        OFFSET(nb_surfaces), AV_OPT_TYPE_INT,    { .i64 = 32 },                   0, INT_MAX, VE },

  75.     { "device",   "Select a specific NVENC device",       OFFSET(device),      AV_OPT_TYPE_INT,    { .i64 = -1 },                   -2, INT_MAX, VE, "device" },

  76.     { "any",      "Pick the first device available",      0,                   AV_OPT_TYPE_CONST,  { .i64 = ANY_DEVICE },           0, 0, VE, "device" },

  77.     { "list",     "List the available devices",           0,                   AV_OPT_TYPE_CONST,  { .i64 = LIST_DEVICES },         0, 0, VE, "device" },

  78.     { "async_depth", "Delay frame output by the given amount of frames", OFFSET(async_depth), AV_OPT_TYPE_INT, { .i64 = INT_MAX }, 0, INT_MAX, VE },

  79.     { "delay",       "Delay frame output by the given amount of frames", OFFSET(async_depth), AV_OPT_TYPE_INT, { .i64 = INT_MAX }, 0, INT_MAX, VE },

  80. #if NVENCAPI_MAJOR_VERSION >= 7

  81.     { "rc-lookahead", "Number of frames to look ahead for rate-control", OFFSET(rc_lookahead), AV_OPT_TYPE_INT, { .i64 = -1 }, -1, INT_MAX, VE },

  82.     { "no-scenecut", "When lookahead is enabled, set this to 1 to disable adaptive I-frame insertion at scene cuts", OFFSET(no_scenecut), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, 1, VE },

  83.     { "b_adapt", "When lookahead is enabled, set this to 0 to disable adaptive B-frame decision", OFFSET(b_adapt), AV_OPT_TYPE_INT, { .i64 = 1 }, 0, 1, VE },

  84.     { "spatial-aq", "set to 1 to enable Spatial AQ", OFFSET(aq), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, 1, VE },

  85.     { "temporal-aq", "set to 1 to enable Temporal AQ",     OFFSET(temporal_aq),  AV_OPT_TYPE_INT,   { .i64 = 0                       }, 0, 1, VE        },

  86.     { "zerolatency", "Set 1 to indicate zero latency operation (no reordering delay)", OFFSET(zerolatency), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, 1, VE },

  87.     { "nonref_p", "Set this to 1 to enable automatic insertion of non-reference P-frames", OFFSET(nonref_p), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, 1, VE },

  88.     { "strict_gop", "Set 1 to minimize GOP-to-GOP rate fluctuations", OFFSET(strict_gop), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, 1, VE },

  89.     { "aq-strength", "When Spatial AQ is enabled, this field is used to specify AQ strength. AQ strength scale is from 1 (low) - 15 (aggressive)", OFFSET(aq_strength), AV_OPT_TYPE_INT, { .i64 = 8 }, 1, 15, VE },

  90.     { "cq", "Set target quality level (0 to 51, 0 means automatic) for constant quality mode in VBR rate control", OFFSET(quality), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, 51, VE },

  91. #endif /* NVENCAPI_MAJOR_VERSION >= 7 */

  92.     { "init_qpP", "Initial QP value for P-frames",        OFFSET(init_qp_p),   AV_OPT_TYPE_INT,    { .i64 = -1 }, -1, 51, VE },

  93.     { "init_qpB", "Initial QP value for B-frames",        OFFSET(init_qp_b),   AV_OPT_TYPE_INT,    { .i64 = -1 }, -1, 51, VE },

  94.     { "init_qpI", "Initial QP value for I-frames",        OFFSET(init_qp_i),   AV_OPT_TYPE_INT,    { .i64 = -1 }, -1, 51, VE },

  95.     { NULL }

  96. };

  97. 

  98. static const AVClass nvenc_h264_class = {

  99.     .class_name = "nvenc_h264",

  100.     .item_name = av_default_item_name,

  101.     .option = options,

  102.     .version = LIBAVUTIL_VERSION_INT,

  103. };

  104. 

  105. static const AVCodecDefault defaults[] = {

  106.     { "b", "0" },

  107.     { "qmin", "-1" },

  108.     { "qmax", "-1" },

  109.     { "qdiff", "-1" },

  110.     { "qblur", "-1" },

  111.     { "qcomp", "-1" },

  112.     { NULL },

  113. };

  114. 

  115. AVCodec ff_h264_nvenc_encoder = {

  116.     .name           = "h264_nvenc",

  117.     .long_name      = NULL_IF_CONFIG_SMALL("NVIDIA NVENC H.264 encoder"),

  118.     .type           = AVMEDIA_TYPE_VIDEO,

  119.     .id             = AV_CODEC_ID_H264,

  120.     .init           = ff_nvenc_encode_init,

  121.     .encode2        = ff_nvenc_encode_frame,

  122.     .close          = ff_nvenc_encode_close,

  123.     .priv_data_size = sizeof(NVENCContext),

  124.     .priv_class     = &nvenc_h264_class,

  125.     .defaults       = defaults,

  126.     .capabilities   = AV_CODEC_CAP_DELAY,

  127.     .caps_internal  = FF_CODEC_CAP_INIT_CLEANUP,

  128.     .pix_fmts       = ff_nvenc_pix_fmts,

  129. };

  130. 

  131. #if FF_API_NVENC_OLD_NAME

  132. 

  133. static int nvenc_old_init(AVCodecContext *avctx)

  134. {

  135.     av_log(avctx, AV_LOG_WARNING, "This encoder is deprecated, use 'h264_nvenc' instead\n");

  136.     return ff_nvenc_encode_init(avctx);

  137. }

  138. 

  139. static const AVClass nvenc_h264_old_class = {

  140.     .class_name = "nvenc_h264",

  141.     .item_name = av_default_item_name,

  142.     .option = options,

  143.     .version = LIBAVUTIL_VERSION_INT,

  144. };

  145. 

  146. AVCodec ff_nvenc_h264_encoder = {

  147.     .name           = "nvenc_h264",

  148.     .long_name      = NULL_IF_CONFIG_SMALL("NVIDIA NVENC H.264 encoder"),

  149.     .type           = AVMEDIA_TYPE_VIDEO,

  150.     .id             = AV_CODEC_ID_H264,

  151.     .init           = nvenc_old_init,

  152.     .encode2        = ff_nvenc_encode_frame,

  153.     .close          = ff_nvenc_encode_close,

  154.     .priv_data_size = sizeof(NVENCContext),

  155.     .priv_class     = &nvenc_h264_old_class,

  156.     .defaults       = defaults,

  157.     .capabilities   = AV_CODEC_CAP_DELAY,

  158.     .caps_internal  = FF_CODEC_CAP_INIT_CLEANUP,

  159.     .pix_fmts       = ff_nvenc_pix_fmts,

  160. };

  161. #endif