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obs-ffmpeg-vaapi.c
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obs-ffmpeg-vaapi.c
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/******************************************************************************
Copyright (C) 2023 by Lain Bailey <lain@obsproject.com>
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
******************************************************************************/
#include <libavutil/avutil.h>
#include <util/darray.h>
#include <util/dstr.h>
#include <util/base.h>
#include <util/platform.h>
#include <media-io/video-io.h>
#include <obs-module.h>
#include <obs-avc.h>
#include <obs-av1.h>
#ifdef ENABLE_HEVC
#include <obs-hevc.h>
#endif
#include <opts-parser.h>
#include <unistd.h>
#include <libavutil/opt.h>
#include <libavutil/pixdesc.h>
#include <libavutil/hwcontext.h>
#include <libavutil/hwcontext_vaapi.h>
#include <libavcodec/avcodec.h>
#include <libavformat/avformat.h>
#include <libavfilter/avfilter.h>
#include <pci/pci.h>
#include "vaapi-utils.h"
#include "obs-ffmpeg-formats.h"
#include <va/va_drmcommon.h>
#include <libdrm/drm_fourcc.h>
#define do_log(level, format, ...) \
blog(level, "[FFmpeg VAAPI encoder: '%s'] " format, obs_encoder_get_name(enc->encoder), ##__VA_ARGS__)
#define warn(format, ...) do_log(LOG_WARNING, format, ##__VA_ARGS__)
#define info(format, ...) do_log(LOG_INFO, format, ##__VA_ARGS__)
#define debug(format, ...) do_log(LOG_DEBUG, format, ##__VA_ARGS__)
enum codec_type {
CODEC_H264,
CODEC_HEVC,
CODEC_AV1,
};
struct vaapi_surface {
AVFrame *frame;
gs_texture_t *textures[4];
uint32_t num_textures;
};
struct vaapi_encoder {
obs_encoder_t *encoder;
enum codec_type codec;
AVBufferRef *vadevice_ref;
AVBufferRef *vaframes_ref;
VADisplay va_dpy;
const AVCodec *vaapi;
AVCodecContext *context;
AVPacket *packet;
AVFrame *vframe;
DARRAY(uint8_t) buffer;
uint8_t *header;
size_t header_size;
uint8_t *sei;
size_t sei_size;
int height;
bool first_packet;
bool initialized;
};
static const char *h264_vaapi_getname(void *unused)
{
UNUSED_PARAMETER(unused);
return "FFmpeg VAAPI H.264";
}
static const char *av1_vaapi_getname(void *unused)
{
UNUSED_PARAMETER(unused);
return "FFmpeg VAAPI AV1";
}
#ifdef ENABLE_HEVC
static const char *hevc_vaapi_getname(void *unused)
{
UNUSED_PARAMETER(unused);
return "FFmpeg VAAPI HEVC";
}
#endif
static inline bool vaapi_valid_format(struct vaapi_encoder *enc, enum video_format format)
{
if (enc->codec == CODEC_H264) {
return format == VIDEO_FORMAT_NV12;
} else if (enc->codec == CODEC_HEVC || enc->codec == CODEC_AV1) {
return (format == VIDEO_FORMAT_NV12) || (format == VIDEO_FORMAT_P010);
} else {
return false;
}
}
static void vaapi_video_info(void *data, struct video_scale_info *info)
{
struct vaapi_encoder *enc = data;
enum video_format pref_format;
pref_format = obs_encoder_get_preferred_video_format(enc->encoder);
if (!vaapi_valid_format(enc, pref_format)) {
pref_format = vaapi_valid_format(enc, info->format) ? info->format : VIDEO_FORMAT_NV12;
}
info->format = pref_format;
}
static bool vaapi_init_codec(struct vaapi_encoder *enc, const char *path)
{
int ret;
ret = av_hwdevice_ctx_create(&enc->vadevice_ref, AV_HWDEVICE_TYPE_VAAPI, path, NULL, 0);
if (ret < 0) {
warn("Failed to create VAAPI device context: %s", av_err2str(ret));
return false;
}
AVHWDeviceContext *vahwctx = (AVHWDeviceContext *)enc->vadevice_ref->data;
AVVAAPIDeviceContext *vadevctx = vahwctx->hwctx;
enc->va_dpy = vadevctx->display;
enc->vaframes_ref = av_hwframe_ctx_alloc(enc->vadevice_ref);
if (!enc->vaframes_ref) {
warn("Failed to alloc HW frames context");
return false;
}
AVHWFramesContext *frames_ctx = (AVHWFramesContext *)enc->vaframes_ref->data;
frames_ctx->format = AV_PIX_FMT_VAAPI;
frames_ctx->sw_format = enc->context->pix_fmt;
frames_ctx->width = enc->context->width;
frames_ctx->height = enc->context->height;
ret = av_hwframe_ctx_init(enc->vaframes_ref);
if (ret < 0) {
warn("Failed to init HW frames context: %s", av_err2str(ret));
return false;
}
/* 2. Create software frame and picture */
enc->vframe = av_frame_alloc();
if (!enc->vframe) {
warn("Failed to allocate video frame");
return false;
}
enc->vframe->format = enc->context->pix_fmt;
enc->vframe->width = enc->context->width;
enc->vframe->height = enc->context->height;
enc->vframe->colorspace = enc->context->colorspace;
enc->vframe->color_range = enc->context->color_range;
enc->vframe->chroma_location = enc->context->chroma_sample_location;
ret = av_frame_get_buffer(enc->vframe, base_get_alignment());
if (ret < 0) {
warn("Failed to allocate vframe: %s", av_err2str(ret));
return false;
}
/* 3. set up codec */
enc->context->pix_fmt = AV_PIX_FMT_VAAPI;
enc->context->hw_frames_ctx = av_buffer_ref(enc->vaframes_ref);
ret = avcodec_open2(enc->context, enc->vaapi, NULL);
if (ret < 0) {
warn("Failed to open VAAPI codec: %s", av_err2str(ret));
return false;
}
enc->packet = av_packet_alloc();
enc->initialized = true;
return true;
}
/* "Allowed" options per Rate Control
* See FFMPEG libavcodec/vaapi_encode.c (vaapi_encode_rc_modes)
*/
typedef struct {
const char *name;
bool qp;
bool bitrate;
bool maxrate;
} rc_mode_t;
static const rc_mode_t *get_rc_mode(const char *name)
{
/* Set "allowed" options per Rate Control */
static const rc_mode_t RC_MODES[] = {{.name = "CBR", .qp = false, .bitrate = true, .maxrate = false},
{.name = "CQP", .qp = true, .bitrate = false, .maxrate = false},
{.name = "VBR", .qp = false, .bitrate = true, .maxrate = true},
{0}};
const rc_mode_t *rc_mode = RC_MODES;
while (!!rc_mode->name && strcmp(rc_mode->name, name) != 0)
rc_mode++;
return rc_mode ? rc_mode : RC_MODES;
}
static bool vaapi_update(void *data, obs_data_t *settings)
{
struct vaapi_encoder *enc = data;
const char *device = obs_data_get_string(settings, "vaapi_device");
const char *rate_control = obs_data_get_string(settings, "rate_control");
const rc_mode_t *rc_mode = get_rc_mode(rate_control);
bool cbr = strcmp(rc_mode->name, "CBR") == 0;
int profile = (int)obs_data_get_int(settings, "profile");
int bf = (int)obs_data_get_int(settings, "bf");
int qp = rc_mode->qp ? (int)obs_data_get_int(settings, "qp") : 0;
enc->context->global_quality = enc->codec == CODEC_AV1 ? qp * 5 : qp;
int level = (int)obs_data_get_int(settings, "level");
int bitrate = rc_mode->bitrate ? (int)obs_data_get_int(settings, "bitrate") : 0;
int maxrate = rc_mode->maxrate ? (int)obs_data_get_int(settings, "maxrate") : 0;
int keyint_sec = (int)obs_data_get_int(settings, "keyint_sec");
/* For Rate Control which allows maxrate, FFMPEG will give
* an error if maxrate > bitrate. To prevent that set maxrate
* to 0.
* For CBR, maxrate = bitrate
*/
if (cbr)
maxrate = bitrate;
else if (rc_mode->maxrate && maxrate && maxrate < bitrate)
maxrate = 0;
video_t *video = obs_encoder_video(enc->encoder);
const struct video_output_info *voi = video_output_get_info(video);
struct video_scale_info info;
info.format = voi->format;
info.colorspace = voi->colorspace;
info.range = voi->range;
#ifdef ENABLE_HEVC
if (enc->codec == CODEC_HEVC) {
if ((profile == FF_PROFILE_HEVC_MAIN) && (info.format == VIDEO_FORMAT_P010)) {
warn("Forcing Main10 for P010");
profile = FF_PROFILE_HEVC_MAIN_10;
}
}
#endif
vaapi_video_info(enc, &info);
enc->context->profile = profile;
enc->context->max_b_frames = bf;
enc->context->level = level;
enc->context->bit_rate = bitrate * 1000;
enc->context->rc_max_rate = maxrate * 1000;
enc->context->rc_initial_buffer_occupancy = (maxrate ? maxrate : bitrate) * 1000;
enc->context->width = obs_encoder_get_width(enc->encoder);
enc->context->height = obs_encoder_get_height(enc->encoder);
enc->context->time_base = (AVRational){voi->fps_den, voi->fps_num};
const enum AVPixelFormat pix_fmt = obs_to_ffmpeg_video_format(info.format);
enc->context->pix_fmt = pix_fmt;
enc->context->color_range = info.range == VIDEO_RANGE_FULL ? AVCOL_RANGE_JPEG : AVCOL_RANGE_MPEG;
enum AVColorSpace colorspace = AVCOL_SPC_UNSPECIFIED;
switch (info.colorspace) {
case VIDEO_CS_601:
enc->context->color_primaries = AVCOL_PRI_SMPTE170M;
enc->context->color_trc = AVCOL_TRC_SMPTE170M;
colorspace = AVCOL_SPC_SMPTE170M;
break;
case VIDEO_CS_DEFAULT:
case VIDEO_CS_709:
enc->context->color_primaries = AVCOL_PRI_BT709;
enc->context->color_trc = AVCOL_TRC_BT709;
colorspace = AVCOL_SPC_BT709;
break;
case VIDEO_CS_SRGB:
enc->context->color_primaries = AVCOL_PRI_BT709;
enc->context->color_trc = AVCOL_TRC_IEC61966_2_1;
colorspace = AVCOL_SPC_BT709;
break;
case VIDEO_CS_2100_PQ:
enc->context->color_primaries = AVCOL_PRI_BT2020;
enc->context->color_trc = AVCOL_TRC_SMPTE2084;
colorspace = AVCOL_SPC_BT2020_NCL;
break;
case VIDEO_CS_2100_HLG:
enc->context->color_primaries = AVCOL_PRI_BT2020;
enc->context->color_trc = AVCOL_TRC_ARIB_STD_B67;
colorspace = AVCOL_SPC_BT2020_NCL;
break;
default:
break;
}
enc->context->colorspace = colorspace;
enc->context->chroma_sample_location = determine_chroma_location(pix_fmt, colorspace);
if (keyint_sec > 0) {
enc->context->gop_size = keyint_sec * voi->fps_num / voi->fps_den;
} else {
enc->context->gop_size = 120;
}
enc->height = enc->context->height;
const char *ffmpeg_opts = obs_data_get_string(settings, "ffmpeg_opts");
struct obs_options opts = obs_parse_options(ffmpeg_opts);
for (size_t i = 0; i < opts.count; i++) {
struct obs_option *opt = &opts.options[i];
av_opt_set(enc->context->priv_data, opt->name, opt->value, 0);
}
obs_free_options(opts);
info("settings:\n"
"\tdevice: %s\n"
"\trate_control: %s\n"
"\tprofile: %d\n"
"\tlevel: %d\n"
"\tqp: %d\n"
"\tbitrate: %d\n"
"\tmaxrate: %d\n"
"\tkeyint: %d\n"
"\twidth: %d\n"
"\theight: %d\n"
"\tb-frames: %d\n"
"\tffmpeg opts: %s\n",
device, rate_control, profile, level, qp, bitrate, maxrate, enc->context->gop_size, enc->context->width,
enc->context->height, enc->context->max_b_frames, ffmpeg_opts);
return vaapi_init_codec(enc, device);
}
static inline enum gs_color_format drm_to_gs_color_format(int format)
{
switch (format) {
case DRM_FORMAT_R8:
return GS_R8;
case DRM_FORMAT_R16:
return GS_R16;
case DRM_FORMAT_GR88:
return GS_R8G8;
case DRM_FORMAT_GR1616:
return GS_RG16;
default:
blog(LOG_ERROR, "Unsupported DRM format %d", format);
return GS_UNKNOWN;
}
}
static void vaapi_destroy_surface(struct vaapi_surface *out)
{
for (uint32_t i = 0; i < out->num_textures; ++i) {
if (out->textures[i]) {
gs_texture_destroy(out->textures[i]);
out->textures[i] = NULL;
}
}
av_frame_free(&out->frame);
}
static bool vaapi_create_surface(struct vaapi_encoder *enc, struct vaapi_surface *out)
{
int ret;
VAStatus vas;
VADRMPRIMESurfaceDescriptor desc;
const AVPixFmtDescriptor *fmt_desc;
bool ok = true;
memset(out, 0, sizeof(*out));
fmt_desc = av_pix_fmt_desc_get(enc->context->pix_fmt);
if (!fmt_desc) {
warn("Failed to get pix fmt descriptor");
return false;
}
out->frame = av_frame_alloc();
if (!out->frame) {
warn("Failed to allocate hw frame");
return false;
}
ret = av_hwframe_get_buffer(enc->vaframes_ref, out->frame, 0);
if (ret < 0) {
warn("Failed to get hw frame buffer: %s", av_err2str(ret));
goto fail;
}
vas = vaExportSurfaceHandle(enc->va_dpy, (uintptr_t)out->frame->data[3], VA_SURFACE_ATTRIB_MEM_TYPE_DRM_PRIME_2,
VA_EXPORT_SURFACE_WRITE_ONLY | VA_EXPORT_SURFACE_SEPARATE_LAYERS, &desc);
if (vas != VA_STATUS_SUCCESS) {
warn("Failed to export VA surface handle: %s", vaErrorStr(vas));
goto fail;
}
for (uint32_t i = 0; i < desc.num_layers; ++i) {
unsigned int width = desc.width;
unsigned int height = desc.height;
if (i) {
width /= 1 << fmt_desc->log2_chroma_w;
height /= 1 << fmt_desc->log2_chroma_h;
}
out->textures[i] = gs_texture_create_from_dmabuf(
width, height, desc.layers[i].drm_format, drm_to_gs_color_format(desc.layers[i].drm_format), 1,
&desc.objects[desc.layers[i].object_index[0]].fd, &desc.layers[i].pitch[0],
&desc.layers[i].offset[0], &desc.objects[desc.layers[i].object_index[0]].drm_format_modifier);
if (!out->textures[i]) {
warn("Failed to import VA surface texture");
ok = false;
}
out->num_textures++;
}
for (uint32_t i = 0; i < desc.num_objects; ++i)
close(desc.objects[i].fd);
if (ok)
return true;
fail:
vaapi_destroy_surface(out);
return false;
}
static inline void flush_remaining_packets(struct vaapi_encoder *enc)
{
int r_pkt = 1;
while (r_pkt) {
if (avcodec_receive_packet(enc->context, enc->packet) < 0)
break;
if (r_pkt)
av_packet_unref(enc->packet);
}
}
static void vaapi_destroy(void *data)
{
struct vaapi_encoder *enc = data;
if (enc->initialized)
flush_remaining_packets(enc);
av_packet_free(&enc->packet);
avcodec_free_context(&enc->context);
av_frame_unref(enc->vframe);
av_frame_free(&enc->vframe);
av_buffer_unref(&enc->vaframes_ref);
av_buffer_unref(&enc->vadevice_ref);
da_free(enc->buffer);
bfree(enc->header);
bfree(enc->sei);
bfree(enc);
}
static inline const char *vaapi_encoder_name(enum codec_type codec)
{
if (codec == CODEC_H264) {
return "h264_vaapi";
} else if (codec == CODEC_HEVC) {
return "hevc_vaapi";
} else if (codec == CODEC_AV1) {
return "av1_vaapi";
}
return NULL;
}
static void *vaapi_create_internal(obs_data_t *settings, obs_encoder_t *encoder, enum codec_type codec)
{
struct vaapi_encoder *enc;
enc = bzalloc(sizeof(*enc));
enc->encoder = encoder;
enc->codec = codec;
enc->vaapi = avcodec_find_encoder_by_name(vaapi_encoder_name(codec));
enc->first_packet = true;
blog(LOG_INFO, "---------------------------------");
if (!enc->vaapi) {
warn("Couldn't find encoder");
goto fail;
}
enc->context = avcodec_alloc_context3(enc->vaapi);
if (!enc->context) {
warn("Failed to create codec context");
goto fail;
}
if (!vaapi_update(enc, settings))
goto fail;
return enc;
fail:
vaapi_destroy(enc);
return NULL;
}
static inline bool vaapi_test_texencode(struct vaapi_encoder *enc)
{
struct vaapi_surface surface;
if (obs_encoder_scaling_enabled(enc->encoder) && !obs_encoder_gpu_scaling_enabled(enc->encoder))
return false;
obs_enter_graphics();
bool success = vaapi_create_surface(enc, &surface);
vaapi_destroy_surface(&surface);
obs_leave_graphics();
return success;
}
static void *vaapi_create_tex_internal(obs_data_t *settings, obs_encoder_t *encoder, enum codec_type codec,
const char *fallback)
{
void *enc = vaapi_create_internal(settings, encoder, codec);
if (!enc) {
return NULL;
}
if (!vaapi_test_texencode(enc)) {
vaapi_destroy(enc);
blog(LOG_WARNING, "VAAPI: Falling back to %s encoder", fallback);
return obs_encoder_create_rerouted(encoder, fallback);
}
return enc;
}
static void *h264_vaapi_create(obs_data_t *settings, obs_encoder_t *encoder)
{
return vaapi_create_internal(settings, encoder, CODEC_H264);
}
static void *h264_vaapi_create_tex(obs_data_t *settings, obs_encoder_t *encoder)
{
return vaapi_create_tex_internal(settings, encoder, CODEC_H264, "ffmpeg_vaapi");
}
static void *av1_vaapi_create(obs_data_t *settings, obs_encoder_t *encoder)
{
return vaapi_create_internal(settings, encoder, CODEC_AV1);
}
static void *av1_vaapi_create_tex(obs_data_t *settings, obs_encoder_t *encoder)
{
return vaapi_create_tex_internal(settings, encoder, CODEC_AV1, "av1_ffmpeg_vaapi");
}
#ifdef ENABLE_HEVC
static void *hevc_vaapi_create(obs_data_t *settings, obs_encoder_t *encoder)
{
return vaapi_create_internal(settings, encoder, CODEC_HEVC);
}
static void *hevc_vaapi_create_tex(obs_data_t *settings, obs_encoder_t *encoder)
{
return vaapi_create_tex_internal(settings, encoder, CODEC_HEVC, "hevc_ffmpeg_vaapi");
}
#endif
static inline void copy_data(AVFrame *pic, const struct encoder_frame *frame, int height, enum AVPixelFormat format)
{
int h_chroma_shift, v_chroma_shift;
av_pix_fmt_get_chroma_sub_sample(format, &h_chroma_shift, &v_chroma_shift);
for (int plane = 0; plane < MAX_AV_PLANES; plane++) {
if (!frame->data[plane])
continue;
int frame_rowsize = (int)frame->linesize[plane];
int pic_rowsize = pic->linesize[plane];
int bytes = frame_rowsize < pic_rowsize ? frame_rowsize : pic_rowsize;
int plane_height = height >> (plane ? v_chroma_shift : 0);
for (int y = 0; y < plane_height; y++) {
int pos_frame = y * frame_rowsize;
int pos_pic = y * pic_rowsize;
memcpy(pic->data[plane] + pos_pic, frame->data[plane] + pos_frame, bytes);
}
}
}
static bool vaapi_encode_internal(struct vaapi_encoder *enc, AVFrame *frame, struct encoder_packet *packet,
bool *received_packet)
{
int got_packet;
int ret;
ret = avcodec_send_frame(enc->context, frame);
if (ret == 0 || ret == AVERROR(EAGAIN))
ret = avcodec_receive_packet(enc->context, enc->packet);
got_packet = (ret == 0);
if (ret == AVERROR_EOF || ret == AVERROR(EAGAIN))
ret = 0;
if (ret < 0) {
warn("vaapi_encode: Error encoding: %s", av_err2str(ret));
goto fail;
}
if (got_packet && enc->packet->size) {
if (enc->first_packet) {
uint8_t *new_packet;
size_t size;
enc->first_packet = false;
switch (enc->codec) {
case CODEC_HEVC:
#ifdef ENABLE_HEVC
obs_extract_hevc_headers(enc->packet->data, enc->packet->size, &new_packet, &size,
&enc->header, &enc->header_size, &enc->sei, &enc->sei_size);
break;
#else
warn("vaapi_encode: HEVC codec is not supported");
goto fail;
#endif
case CODEC_H264:
obs_extract_avc_headers(enc->packet->data, enc->packet->size, &new_packet, &size,
&enc->header, &enc->header_size, &enc->sei, &enc->sei_size);
break;
case CODEC_AV1:
obs_extract_av1_headers(enc->packet->data, enc->packet->size, &new_packet, &size,
&enc->header, &enc->header_size);
break;
}
da_copy_array(enc->buffer, new_packet, size);
bfree(new_packet);
} else {
da_copy_array(enc->buffer, enc->packet->data, enc->packet->size);
}
packet->pts = enc->packet->pts;
packet->dts = enc->packet->dts;
packet->data = enc->buffer.array;
packet->size = enc->buffer.num;
packet->type = OBS_ENCODER_VIDEO;
#ifdef ENABLE_HEVC
if (enc->codec == CODEC_HEVC) {
packet->keyframe = obs_hevc_keyframe(packet->data, packet->size);
} else
#endif
if (enc->codec == CODEC_H264) {
packet->keyframe = obs_avc_keyframe(packet->data, packet->size);
} else if (enc->codec == CODEC_AV1) {
packet->keyframe = obs_av1_keyframe(packet->data, packet->size);
}
*received_packet = true;
}
av_packet_unref(enc->packet);
return true;
fail:
av_packet_unref(enc->packet);
return false;
}
static bool vaapi_encode_copy(void *data, struct encoder_frame *frame, struct encoder_packet *packet,
bool *received_packet)
{
struct vaapi_encoder *enc = data;
AVFrame *hwframe = NULL;
int ret;
*received_packet = false;
hwframe = av_frame_alloc();
if (!hwframe) {
warn("vaapi_encode_copy: failed to allocate hw frame");
return false;
}
ret = av_hwframe_get_buffer(enc->vaframes_ref, hwframe, 0);
if (ret < 0) {
warn("vaapi_encode_copy: failed to get buffer for hw frame: %s", av_err2str(ret));
goto fail;
}
copy_data(enc->vframe, frame, enc->height, enc->context->pix_fmt);
enc->vframe->pts = frame->pts;
hwframe->pts = frame->pts;
hwframe->width = enc->vframe->width;
hwframe->height = enc->vframe->height;
ret = av_hwframe_transfer_data(hwframe, enc->vframe, 0);
if (ret < 0) {
warn("vaapi_encode_copy: failed to upload hw frame: %s", av_err2str(ret));
goto fail;
}
ret = av_frame_copy_props(hwframe, enc->vframe);
if (ret < 0) {
warn("vaapi_encode_copy: failed to copy props to hw frame: %s", av_err2str(ret));
goto fail;
}
if (!vaapi_encode_internal(enc, hwframe, packet, received_packet))
goto fail;
av_frame_free(&hwframe);
return true;
fail:
av_frame_free(&hwframe);
return false;
}
static bool vaapi_encode_tex(void *data, struct encoder_texture *texture, int64_t pts, uint64_t lock_key,
uint64_t *next_key, struct encoder_packet *packet, bool *received_packet)
{
UNUSED_PARAMETER(lock_key);
UNUSED_PARAMETER(next_key);
struct vaapi_encoder *enc = data;
struct vaapi_surface surface;
int ret;
*received_packet = false;
obs_enter_graphics();
// Destroyed piecemeal to avoid taking the graphics lock again.
if (!vaapi_create_surface(enc, &surface)) {
warn("vaapi_encode_tex: failed to create texture hw frame");
obs_leave_graphics();
return false;
}
for (uint32_t i = 0; i < surface.num_textures; ++i) {
if (!texture->tex[i]) {
warn("vaapi_encode_tex: unexpected number of textures");
obs_leave_graphics();
goto fail;
}
gs_copy_texture(surface.textures[i], texture->tex[i]);
gs_texture_destroy(surface.textures[i]);
}
gs_flush();
obs_leave_graphics();
enc->vframe->pts = pts;
ret = av_frame_copy_props(surface.frame, enc->vframe);
if (ret < 0) {
warn("vaapi_encode_tex: failed to copy props to hw frame: %s", av_err2str(ret));
goto fail;
}
if (!vaapi_encode_internal(enc, surface.frame, packet, received_packet))
goto fail;
av_frame_free(&surface.frame);
return true;
fail:
av_frame_free(&surface.frame);
return false;
}
static void set_visible(obs_properties_t *ppts, const char *name, bool visible)
{
obs_property_t *p = obs_properties_get(ppts, name);
obs_property_set_visible(p, visible);
}
static inline VAProfile vaapi_profile(enum codec_type codec)
{
if (codec == CODEC_H264) {
return VAProfileH264ConstrainedBaseline;
} else if (codec == CODEC_AV1) {
return VAProfileAV1Profile0;
#if ENABLE_HEVC
} else if (codec == CODEC_HEVC) {
return VAProfileHEVCMain;
#endif
}
return VAProfileNone;
}
static inline const char *vaapi_default_device(enum codec_type codec)
{
if (codec == CODEC_H264) {
return vaapi_get_h264_default_device();
} else if (codec == CODEC_AV1) {
return vaapi_get_av1_default_device();
#if ENABLE_HEVC
} else if (codec == CODEC_HEVC) {
return vaapi_get_hevc_default_device();
#endif
}
return NULL;
}
static void vaapi_defaults_internal(obs_data_t *settings, enum codec_type codec)
{
const char *const device = vaapi_default_device(codec);
obs_data_set_default_string(settings, "vaapi_device", device);
#ifdef ENABLE_HEVC
if (codec == CODEC_HEVC)
obs_data_set_default_int(settings, "profile", FF_PROFILE_HEVC_MAIN);
else
#endif
if (codec == CODEC_H264)
obs_data_set_default_int(settings, "profile", FF_PROFILE_H264_HIGH);
else if (codec == CODEC_AV1)
obs_data_set_default_int(settings, "profile", FF_PROFILE_AV1_MAIN);
obs_data_set_default_int(settings, "level", FF_LEVEL_UNKNOWN);
obs_data_set_default_int(settings, "bitrate", 2500);
obs_data_set_default_int(settings, "keyint_sec", 0);
obs_data_set_default_int(settings, "bf", 0);
obs_data_set_default_int(settings, "qp", 20);
obs_data_set_default_int(settings, "maxrate", 0);
int drm_fd = -1;
VADisplay va_dpy = vaapi_open_device(&drm_fd, device, "vaapi_defaults");
if (!va_dpy)
return;
const VAProfile profile = vaapi_profile(codec);
if (vaapi_device_rc_supported(profile, va_dpy, VA_RC_CBR, device))
obs_data_set_default_string(settings, "rate_control", "CBR");
else if (vaapi_device_rc_supported(profile, va_dpy, VA_RC_VBR, device))
obs_data_set_default_string(settings, "rate_control", "VBR");
else
obs_data_set_default_string(settings, "rate_control", "CQP");
vaapi_close_device(&drm_fd, va_dpy);
}
static void h264_vaapi_defaults(obs_data_t *settings)
{
vaapi_defaults_internal(settings, CODEC_H264);
}
static void av1_vaapi_defaults(obs_data_t *settings)
{
vaapi_defaults_internal(settings, CODEC_AV1);
}
static void hevc_vaapi_defaults(obs_data_t *settings)
{
vaapi_defaults_internal(settings, CODEC_HEVC);
}
static bool vaapi_device_modified(obs_properties_t *ppts, obs_property_t *p, obs_data_t *settings)
{
UNUSED_PARAMETER(p);
const char *device = obs_data_get_string(settings, "vaapi_device");
int drm_fd = -1;
VADisplay va_dpy = vaapi_open_device(&drm_fd, device, "vaapi_device_modified");
int profile = obs_data_get_int(settings, "profile");
obs_property_t *rc_p = obs_properties_get(ppts, "rate_control");
obs_property_list_clear(rc_p);
if (!va_dpy)
goto fail;
switch (profile) {
case FF_PROFILE_H264_CONSTRAINED_BASELINE:
if (!vaapi_display_h264_supported(va_dpy, device))
goto fail;
profile = VAProfileH264ConstrainedBaseline;
break;
case FF_PROFILE_H264_MAIN:
if (!vaapi_display_h264_supported(va_dpy, device))
goto fail;
profile = VAProfileH264Main;
break;
case FF_PROFILE_H264_HIGH:
if (!vaapi_display_h264_supported(va_dpy, device))
goto fail;
profile = VAProfileH264High;
break;
case FF_PROFILE_AV1_MAIN:
if (!vaapi_display_av1_supported(va_dpy, device))
goto fail;
profile = VAProfileAV1Profile0;
break;
#ifdef ENABLE_HEVC
case FF_PROFILE_HEVC_MAIN:
if (!vaapi_display_hevc_supported(va_dpy, device))
goto fail;
profile = VAProfileHEVCMain;
break;
case FF_PROFILE_HEVC_MAIN_10:
if (!vaapi_display_hevc_supported(va_dpy, device))
goto fail;
profile = VAProfileHEVCMain10;
break;
#endif
}
if (vaapi_device_rc_supported(profile, va_dpy, VA_RC_CBR, device))
obs_property_list_add_string(rc_p, "CBR", "CBR");
if (vaapi_device_rc_supported(profile, va_dpy, VA_RC_VBR, device))
obs_property_list_add_string(rc_p, "VBR", "VBR");
if (vaapi_device_rc_supported(profile, va_dpy, VA_RC_CQP, device))
obs_property_list_add_string(rc_p, "CQP", "CQP");
set_visible(ppts, "bf", vaapi_device_bframe_supported(profile, va_dpy));
fail:
vaapi_close_device(&drm_fd, va_dpy);
return true;
}
static bool rate_control_modified(obs_properties_t *ppts, obs_property_t *p, obs_data_t *settings)
{
UNUSED_PARAMETER(p);
const char *rate_control = obs_data_get_string(settings, "rate_control");
const rc_mode_t *rc_mode = get_rc_mode(rate_control);
/* Set options visibility per Rate Control */
set_visible(ppts, "qp", rc_mode->qp);
set_visible(ppts, "bitrate", rc_mode->bitrate);
set_visible(ppts, "maxrate", rc_mode->maxrate);
return true;
}
static bool get_device_name_from_pci(struct pci_access *pacc, char *pci_slot, char *buf, int size)
{
struct pci_filter filter;
struct pci_dev *dev;
char *name;
pci_filter_init(pacc, &filter);
if (pci_filter_parse_slot(&filter, pci_slot))
return false;
pci_scan_bus(pacc);
for (dev = pacc->devices; dev; dev = dev->next) {
if (pci_filter_match(&filter, dev)) {
pci_fill_info(dev, PCI_FILL_IDENT);
name = pci_lookup_name(pacc, buf, size, PCI_LOOKUP_DEVICE, dev->vendor_id, dev->device_id);
strcpy(buf, name);
return true;
}
}