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weston/libweston/vaapi-recorder.c

1162 lines
27 KiB

/*
* Copyright (c) 2012 Intel Corporation. All Rights Reserved.
* Copyright © 2013 Intel Corporation
*
* Permission is hereby granted, free of charge, to any person obtaining
* a copy of this software and associated documentation files (the
* "Software"), to deal in the Software without restriction, including
* without limitation the rights to use, copy, modify, merge, publish,
* distribute, sublicense, and/or sell copies of the Software, and to
* permit persons to whom the Software is furnished to do so, subject to
* the following conditions:
*
* The above copyright notice and this permission notice (including the
* next paragraph) shall be included in all copies or substantial
* portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*/
#include "config.h"
#include <stdlib.h>
#include <stdint.h>
#include <string.h>
#include <unistd.h>
#include <assert.h>
#include <errno.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <pthread.h>
#include <va/va.h>
#include <va/va_drm.h>
#include <va/va_drmcommon.h>
#include <va/va_enc_h264.h>
#include <va/va_vpp.h>
#include <libweston/libweston.h>
#include "vaapi-recorder.h"
#define NAL_REF_IDC_NONE 0
#define NAL_REF_IDC_LOW 1
#define NAL_REF_IDC_MEDIUM 2
#define NAL_REF_IDC_HIGH 3
#define NAL_NON_IDR 1
#define NAL_IDR 5
#define NAL_SPS 7
#define NAL_PPS 8
#define NAL_SEI 6
#define SLICE_TYPE_P 0
#define SLICE_TYPE_B 1
#define SLICE_TYPE_I 2
#define ENTROPY_MODE_CAVLC 0
#define ENTROPY_MODE_CABAC 1
#define PROFILE_IDC_BASELINE 66
#define PROFILE_IDC_MAIN 77
#define PROFILE_IDC_HIGH 100
struct vaapi_recorder {
int drm_fd, output_fd;
int width, height;
int frame_count;
int error;
int destroying;
pthread_t worker_thread;
pthread_mutex_t mutex;
pthread_cond_t input_cond;
struct {
int valid;
int prime_fd, stride;
} input;
VADisplay va_dpy;
/* video post processing is used for colorspace conversion */
struct {
VAConfigID cfg;
VAContextID ctx;
VABufferID pipeline_buf;
VASurfaceID output;
} vpp;
struct {
VAConfigID cfg;
VAContextID ctx;
VASurfaceID reference_picture[3];
int intra_period;
int output_size;
int constraint_set_flag;
struct {
VAEncSequenceParameterBufferH264 seq;
VAEncPictureParameterBufferH264 pic;
VAEncSliceParameterBufferH264 slice;
} param;
} encoder;
};
static void *
worker_thread_function(void *);
/* bitstream code used for writing the packed headers */
#define BITSTREAM_ALLOCATE_STEPPING 4096
struct bitstream {
unsigned int *buffer;
int bit_offset;
int max_size_in_dword;
};
static unsigned int
va_swap32(unsigned int val)
{
unsigned char *pval = (unsigned char *)&val;
return ((pval[0] << 24) |
(pval[1] << 16) |
(pval[2] << 8) |
(pval[3] << 0));
}
static void
bitstream_start(struct bitstream *bs)
{
bs->max_size_in_dword = BITSTREAM_ALLOCATE_STEPPING;
bs->buffer = calloc(bs->max_size_in_dword * sizeof(unsigned int), 1);
bs->bit_offset = 0;
}
static void
bitstream_end(struct bitstream *bs)
{
int pos = (bs->bit_offset >> 5);
int bit_offset = (bs->bit_offset & 0x1f);
int bit_left = 32 - bit_offset;
if (bit_offset) {
bs->buffer[pos] = va_swap32((bs->buffer[pos] << bit_left));
}
}
static void
bitstream_put_ui(struct bitstream *bs, unsigned int val, int size_in_bits)
{
int pos = (bs->bit_offset >> 5);
int bit_offset = (bs->bit_offset & 0x1f);
int bit_left = 32 - bit_offset;
if (!size_in_bits)
return;
bs->bit_offset += size_in_bits;
if (bit_left > size_in_bits) {
bs->buffer[pos] = (bs->buffer[pos] << size_in_bits | val);
return;
}
size_in_bits -= bit_left;
bs->buffer[pos] =
(bs->buffer[pos] << bit_left) | (val >> size_in_bits);
bs->buffer[pos] = va_swap32(bs->buffer[pos]);
if (pos + 1 == bs->max_size_in_dword) {
bs->max_size_in_dword += BITSTREAM_ALLOCATE_STEPPING;
bs->buffer =
realloc(bs->buffer,
bs->max_size_in_dword * sizeof(unsigned int));
}
bs->buffer[pos + 1] = val;
}
static void
bitstream_put_ue(struct bitstream *bs, unsigned int val)
{
int size_in_bits = 0;
int tmp_val = ++val;
while (tmp_val) {
tmp_val >>= 1;
size_in_bits++;
}
bitstream_put_ui(bs, 0, size_in_bits - 1); /* leading zero */
bitstream_put_ui(bs, val, size_in_bits);
}
static void
bitstream_put_se(struct bitstream *bs, int val)
{
unsigned int new_val;
if (val <= 0)
new_val = -2 * val;
else
new_val = 2 * val - 1;
bitstream_put_ue(bs, new_val);
}
static void
bitstream_byte_aligning(struct bitstream *bs, int bit)
{
int bit_offset = (bs->bit_offset & 0x7);
int bit_left = 8 - bit_offset;
int new_val;
if (!bit_offset)
return;
if (bit)
new_val = (1 << bit_left) - 1;
else
new_val = 0;
bitstream_put_ui(bs, new_val, bit_left);
}
static VAStatus
encoder_create_config(struct vaapi_recorder *r)
{
VAConfigAttrib attrib[2];
VAStatus status;
/* FIXME: should check if VAEntrypointEncSlice is supported */
/* FIXME: should check if specified attributes are supported */
attrib[0].type = VAConfigAttribRTFormat;
attrib[0].value = VA_RT_FORMAT_YUV420;
attrib[1].type = VAConfigAttribRateControl;
attrib[1].value = VA_RC_CQP;
status = vaCreateConfig(r->va_dpy, VAProfileH264Main,
VAEntrypointEncSlice, attrib, 2,
&r->encoder.cfg);
if (status != VA_STATUS_SUCCESS)
return status;
status = vaCreateContext(r->va_dpy, r->encoder.cfg,
r->width, r->height, VA_PROGRESSIVE, 0, 0,
&r->encoder.ctx);
if (status != VA_STATUS_SUCCESS) {
vaDestroyConfig(r->va_dpy, r->encoder.cfg);
return status;
}
return VA_STATUS_SUCCESS;
}
static void
encoder_destroy_config(struct vaapi_recorder *r)
{
vaDestroyContext(r->va_dpy, r->encoder.ctx);
vaDestroyConfig(r->va_dpy, r->encoder.cfg);
}
static void
encoder_init_seq_parameters(struct vaapi_recorder *r)
{
int width_in_mbs, height_in_mbs;
int frame_cropping_flag = 0;
int frame_crop_bottom_offset = 0;
width_in_mbs = (r->width + 15) / 16;
height_in_mbs = (r->height + 15) / 16;
r->encoder.param.seq.level_idc = 41;
r->encoder.param.seq.intra_period = r->encoder.intra_period;
r->encoder.param.seq.max_num_ref_frames = 4;
r->encoder.param.seq.picture_width_in_mbs = width_in_mbs;
r->encoder.param.seq.picture_height_in_mbs = height_in_mbs;
r->encoder.param.seq.seq_fields.bits.frame_mbs_only_flag = 1;
/* Tc = num_units_in_tick / time_scale */
r->encoder.param.seq.time_scale = 1800;
r->encoder.param.seq.num_units_in_tick = 15;
if (height_in_mbs * 16 - r->height > 0) {
frame_cropping_flag = 1;
frame_crop_bottom_offset = (height_in_mbs * 16 - r->height) / 2;
}
r->encoder.param.seq.frame_cropping_flag = frame_cropping_flag;
r->encoder.param.seq.frame_crop_bottom_offset = frame_crop_bottom_offset;
r->encoder.param.seq.seq_fields.bits.log2_max_pic_order_cnt_lsb_minus4 = 2;
}
static VABufferID
encoder_update_seq_parameters(struct vaapi_recorder *r)
{
VABufferID seq_buf;
VAStatus status;
status = vaCreateBuffer(r->va_dpy, r->encoder.ctx,
VAEncSequenceParameterBufferType,
sizeof(r->encoder.param.seq),
1, &r->encoder.param.seq,
&seq_buf);
if (status == VA_STATUS_SUCCESS)
return seq_buf;
else
return VA_INVALID_ID;
}
static void
encoder_init_pic_parameters(struct vaapi_recorder *r)
{
VAEncPictureParameterBufferH264 *pic = &r->encoder.param.pic;
pic->pic_init_qp = 0;
/* ENTROPY_MODE_CABAC */
pic->pic_fields.bits.entropy_coding_mode_flag = 1;
pic->pic_fields.bits.deblocking_filter_control_present_flag = 1;
}
static VABufferID
encoder_update_pic_parameters(struct vaapi_recorder *r,
VABufferID output_buf)
{
VAEncPictureParameterBufferH264 *pic = &r->encoder.param.pic;
VAStatus status;
VABufferID pic_param_buf;
VASurfaceID curr_pic, pic0;
curr_pic = r->encoder.reference_picture[r->frame_count % 2];
pic0 = r->encoder.reference_picture[(r->frame_count + 1) % 2];
pic->CurrPic.picture_id = curr_pic;
pic->CurrPic.TopFieldOrderCnt = r->frame_count * 2;
pic->ReferenceFrames[0].picture_id = pic0;
pic->ReferenceFrames[1].picture_id = r->encoder.reference_picture[2];
pic->ReferenceFrames[2].picture_id = VA_INVALID_ID;
pic->coded_buf = output_buf;
pic->frame_num = r->frame_count;
pic->pic_fields.bits.idr_pic_flag = (r->frame_count == 0);
pic->pic_fields.bits.reference_pic_flag = 1;
status = vaCreateBuffer(r->va_dpy, r->encoder.ctx,
VAEncPictureParameterBufferType,
sizeof(VAEncPictureParameterBufferH264), 1,
pic, &pic_param_buf);
if (status == VA_STATUS_SUCCESS)
return pic_param_buf;
else
return VA_INVALID_ID;
}
static VABufferID
encoder_update_slice_parameter(struct vaapi_recorder *r, int slice_type)
{
VABufferID slice_param_buf;
VAStatus status;
int width_in_mbs = (r->width + 15) / 16;
int height_in_mbs = (r->height + 15) / 16;
memset(&r->encoder.param.slice, 0, sizeof r->encoder.param.slice);
r->encoder.param.slice.num_macroblocks = width_in_mbs * height_in_mbs;
r->encoder.param.slice.slice_type = slice_type;
r->encoder.param.slice.slice_alpha_c0_offset_div2 = 2;
r->encoder.param.slice.slice_beta_offset_div2 = 2;
status = vaCreateBuffer(r->va_dpy, r->encoder.ctx,
VAEncSliceParameterBufferType,
sizeof(r->encoder.param.slice), 1,
&r->encoder.param.slice,
&slice_param_buf);
if (status == VA_STATUS_SUCCESS)
return slice_param_buf;
else
return VA_INVALID_ID;
}
static VABufferID
encoder_update_misc_hdr_parameter(struct vaapi_recorder *r)
{
VAEncMiscParameterBuffer *misc_param;
VAEncMiscParameterHRD *hrd;
VABufferID buffer;
VAStatus status;
int total_size =
sizeof(VAEncMiscParameterBuffer) +
sizeof(VAEncMiscParameterRateControl);
status = vaCreateBuffer(r->va_dpy, r->encoder.ctx,
VAEncMiscParameterBufferType, total_size,
1, NULL, &buffer);
if (status != VA_STATUS_SUCCESS)
return VA_INVALID_ID;
status = vaMapBuffer(r->va_dpy, buffer, (void **) &misc_param);
if (status != VA_STATUS_SUCCESS) {
vaDestroyBuffer(r->va_dpy, buffer);
return VA_INVALID_ID;
}
misc_param->type = VAEncMiscParameterTypeHRD;
hrd = (VAEncMiscParameterHRD *) misc_param->data;
hrd->initial_buffer_fullness = 0;
hrd->buffer_size = 0;
vaUnmapBuffer(r->va_dpy, buffer);
return buffer;
}
static int
setup_encoder(struct vaapi_recorder *r)
{
VAStatus status;
status = encoder_create_config(r);
if (status != VA_STATUS_SUCCESS) {
return -1;
}
status = vaCreateSurfaces(r->va_dpy, VA_RT_FORMAT_YUV420,
r->width, r->height,
r->encoder.reference_picture, 3,
NULL, 0);
if (status != VA_STATUS_SUCCESS) {
encoder_destroy_config(r);
return -1;
}
/* VAProfileH264Main */
r->encoder.constraint_set_flag |= (1 << 1); /* Annex A.2.2 */
r->encoder.output_size = r->width * r->height;
r->encoder.intra_period = 30;
encoder_init_seq_parameters(r);
encoder_init_pic_parameters(r);
return 0;
}
static void
encoder_destroy(struct vaapi_recorder *r)
{
vaDestroySurfaces(r->va_dpy, r->encoder.reference_picture, 3);
encoder_destroy_config(r);
}
static void
nal_start_code_prefix(struct bitstream *bs)
{
bitstream_put_ui(bs, 0x00000001, 32);
}
static void
nal_header(struct bitstream *bs, int nal_ref_idc, int nal_unit_type)
{
/* forbidden_zero_bit: 0 */
bitstream_put_ui(bs, 0, 1);
bitstream_put_ui(bs, nal_ref_idc, 2);
bitstream_put_ui(bs, nal_unit_type, 5);
}
static void
rbsp_trailing_bits(struct bitstream *bs)
{
bitstream_put_ui(bs, 1, 1);
bitstream_byte_aligning(bs, 0);
}
static void sps_rbsp(struct bitstream *bs,
VAEncSequenceParameterBufferH264 *seq,
int constraint_set_flag)
{
int i;
bitstream_put_ui(bs, PROFILE_IDC_MAIN, 8);
/* constraint_set[0-3] flag */
for (i = 0; i < 4; i++) {
int set = (constraint_set_flag & (1 << i)) ? 1 : 0;
bitstream_put_ui(bs, set, 1);
}
/* reserved_zero_4bits */
bitstream_put_ui(bs, 0, 4);
bitstream_put_ui(bs, seq->level_idc, 8);
bitstream_put_ue(bs, seq->seq_parameter_set_id);
bitstream_put_ue(bs, seq->seq_fields.bits.log2_max_frame_num_minus4);
bitstream_put_ue(bs, seq->seq_fields.bits.pic_order_cnt_type);
bitstream_put_ue(bs,
seq->seq_fields.bits.log2_max_pic_order_cnt_lsb_minus4);
bitstream_put_ue(bs, seq->max_num_ref_frames);
/* gaps_in_frame_num_value_allowed_flag */
bitstream_put_ui(bs, 0, 1);
/* pic_width_in_mbs_minus1, pic_height_in_map_units_minus1 */
bitstream_put_ue(bs, seq->picture_width_in_mbs - 1);
bitstream_put_ue(bs, seq->picture_height_in_mbs - 1);
bitstream_put_ui(bs, seq->seq_fields.bits.frame_mbs_only_flag, 1);
bitstream_put_ui(bs, seq->seq_fields.bits.direct_8x8_inference_flag, 1);
bitstream_put_ui(bs, seq->frame_cropping_flag, 1);
if (seq->frame_cropping_flag) {
bitstream_put_ue(bs, seq->frame_crop_left_offset);
bitstream_put_ue(bs, seq->frame_crop_right_offset);
bitstream_put_ue(bs, seq->frame_crop_top_offset);
bitstream_put_ue(bs, seq->frame_crop_bottom_offset);
}
/* vui_parameters_present_flag */
bitstream_put_ui(bs, 1, 1);
/* aspect_ratio_info_present_flag */
bitstream_put_ui(bs, 0, 1);
/* overscan_info_present_flag */
bitstream_put_ui(bs, 0, 1);
/* video_signal_type_present_flag */
bitstream_put_ui(bs, 0, 1);
/* chroma_loc_info_present_flag */
bitstream_put_ui(bs, 0, 1);
/* timing_info_present_flag */
bitstream_put_ui(bs, 1, 1);
bitstream_put_ui(bs, seq->num_units_in_tick, 32);
bitstream_put_ui(bs, seq->time_scale, 32);
/* fixed_frame_rate_flag */
bitstream_put_ui(bs, 1, 1);
/* nal_hrd_parameters_present_flag */
bitstream_put_ui(bs, 0, 1);
/* vcl_hrd_parameters_present_flag */
bitstream_put_ui(bs, 0, 1);
/* low_delay_hrd_flag */
bitstream_put_ui(bs, 0, 1);
/* pic_struct_present_flag */
bitstream_put_ui(bs, 0, 1);
/* bitstream_restriction_flag */
bitstream_put_ui(bs, 0, 1);
rbsp_trailing_bits(bs);
}
static void pps_rbsp(struct bitstream *bs,
VAEncPictureParameterBufferH264 *pic)
{
/* pic_parameter_set_id, seq_parameter_set_id */
bitstream_put_ue(bs, pic->pic_parameter_set_id);
bitstream_put_ue(bs, pic->seq_parameter_set_id);
bitstream_put_ui(bs, pic->pic_fields.bits.entropy_coding_mode_flag, 1);
/* pic_order_present_flag: 0 */
bitstream_put_ui(bs, 0, 1);
/* num_slice_groups_minus1 */
bitstream_put_ue(bs, 0);
bitstream_put_ue(bs, pic->num_ref_idx_l0_active_minus1);
bitstream_put_ue(bs, pic->num_ref_idx_l1_active_minus1);
bitstream_put_ui(bs, pic->pic_fields.bits.weighted_pred_flag, 1);
bitstream_put_ui(bs, pic->pic_fields.bits.weighted_bipred_idc, 2);
/* pic_init_qp_minus26, pic_init_qs_minus26, chroma_qp_index_offset */
bitstream_put_se(bs, pic->pic_init_qp - 26);
bitstream_put_se(bs, 0);
bitstream_put_se(bs, 0);
bitstream_put_ui(bs, pic->pic_fields.bits.deblocking_filter_control_present_flag, 1);
/* constrained_intra_pred_flag, redundant_pic_cnt_present_flag */
bitstream_put_ui(bs, 0, 1);
bitstream_put_ui(bs, 0, 1);
bitstream_put_ui(bs, pic->pic_fields.bits.transform_8x8_mode_flag, 1);
/* pic_scaling_matrix_present_flag */
bitstream_put_ui(bs, 0, 1);
bitstream_put_se(bs, pic->second_chroma_qp_index_offset );
rbsp_trailing_bits(bs);
}
static int
build_packed_pic_buffer(struct vaapi_recorder *r,
void **header_buffer)
{
struct bitstream bs;
bitstream_start(&bs);
nal_start_code_prefix(&bs);
nal_header(&bs, NAL_REF_IDC_HIGH, NAL_PPS);
pps_rbsp(&bs, &r->encoder.param.pic);
bitstream_end(&bs);
*header_buffer = bs.buffer;
return bs.bit_offset;
}
static int
build_packed_seq_buffer(struct vaapi_recorder *r,
void **header_buffer)
{
struct bitstream bs;
bitstream_start(&bs);
nal_start_code_prefix(&bs);
nal_header(&bs, NAL_REF_IDC_HIGH, NAL_SPS);
sps_rbsp(&bs, &r->encoder.param.seq, r->encoder.constraint_set_flag);
bitstream_end(&bs);
*header_buffer = bs.buffer;
return bs.bit_offset;
}
static int
create_packed_header_buffers(struct vaapi_recorder *r, VABufferID *buffers,
VAEncPackedHeaderType type,
void *data, int bit_length)
{
VAEncPackedHeaderParameterBuffer packed_header;
VAStatus status;
packed_header.type = type;
packed_header.bit_length = bit_length;
packed_header.has_emulation_bytes = 0;
status = vaCreateBuffer(r->va_dpy, r->encoder.ctx,
VAEncPackedHeaderParameterBufferType,
sizeof packed_header, 1, &packed_header,
&buffers[0]);
if (status != VA_STATUS_SUCCESS)
return 0;
status = vaCreateBuffer(r->va_dpy, r->encoder.ctx,
VAEncPackedHeaderDataBufferType,
(bit_length + 7) / 8, 1, data, &buffers[1]);
if (status != VA_STATUS_SUCCESS) {
vaDestroyBuffer(r->va_dpy, buffers[0]);
return 0;
}
return 2;
}
static int
encoder_prepare_headers(struct vaapi_recorder *r, VABufferID *buffers)
{
VABufferID *p;
int bit_length;
void *data;
p = buffers;
bit_length = build_packed_seq_buffer(r, &data);
p += create_packed_header_buffers(r, p, VAEncPackedHeaderSequence,
data, bit_length);
free(data);
bit_length = build_packed_pic_buffer(r, &data);
p += create_packed_header_buffers(r, p, VAEncPackedHeaderPicture,
data, bit_length);
free(data);
return p - buffers;
}
static VAStatus
encoder_render_picture(struct vaapi_recorder *r, VASurfaceID input,
VABufferID *buffers, int count)
{
VAStatus status;
status = vaBeginPicture(r->va_dpy, r->encoder.ctx, input);
if (status != VA_STATUS_SUCCESS)
return status;
status = vaRenderPicture(r->va_dpy, r->encoder.ctx, buffers, count);
if (status != VA_STATUS_SUCCESS)
return status;
status = vaEndPicture(r->va_dpy, r->encoder.ctx);
if (status != VA_STATUS_SUCCESS)
return status;
return vaSyncSurface(r->va_dpy, input);
}
static VABufferID
encoder_create_output_buffer(struct vaapi_recorder *r)
{
VABufferID output_buf;
VAStatus status;
status = vaCreateBuffer(r->va_dpy, r->encoder.ctx,
VAEncCodedBufferType, r->encoder.output_size,
1, NULL, &output_buf);
if (status == VA_STATUS_SUCCESS)
return output_buf;
else
return VA_INVALID_ID;
}
enum output_write_status {
OUTPUT_WRITE_SUCCESS,
OUTPUT_WRITE_OVERFLOW,
OUTPUT_WRITE_FATAL
};
static enum output_write_status
encoder_write_output(struct vaapi_recorder *r, VABufferID output_buf)
{
VACodedBufferSegment *segment;
VAStatus status;
int count;
status = vaMapBuffer(r->va_dpy, output_buf, (void **) &segment);
if (status != VA_STATUS_SUCCESS)
return OUTPUT_WRITE_FATAL;
if (segment->status & VA_CODED_BUF_STATUS_SLICE_OVERFLOW_MASK) {
r->encoder.output_size *= 2;
vaUnmapBuffer(r->va_dpy, output_buf);
return OUTPUT_WRITE_OVERFLOW;
}
count = write(r->output_fd, segment->buf, segment->size);
vaUnmapBuffer(r->va_dpy, output_buf);
if (count < 0)
return OUTPUT_WRITE_FATAL;
return OUTPUT_WRITE_SUCCESS;
}
static void
encoder_encode(struct vaapi_recorder *r, VASurfaceID input)
{
VABufferID output_buf = VA_INVALID_ID;
VABufferID buffers[8];
int count = 0;
int i, slice_type;
enum output_write_status ret;
if ((r->frame_count % r->encoder.intra_period) == 0)
slice_type = SLICE_TYPE_I;
else
slice_type = SLICE_TYPE_P;
buffers[count++] = encoder_update_seq_parameters(r);
buffers[count++] = encoder_update_misc_hdr_parameter(r);
buffers[count++] = encoder_update_slice_parameter(r, slice_type);
for (i = 0; i < count; i++)
if (buffers[i] == VA_INVALID_ID)
goto bail;
if (r->frame_count == 0)
count += encoder_prepare_headers(r, buffers + count);
do {
output_buf = encoder_create_output_buffer(r);
if (output_buf == VA_INVALID_ID)
goto bail;
buffers[count++] =
encoder_update_pic_parameters(r, output_buf);
if (buffers[count - 1] == VA_INVALID_ID)
goto bail;
encoder_render_picture(r, input, buffers, count);
ret = encoder_write_output(r, output_buf);
vaDestroyBuffer(r->va_dpy, output_buf);
output_buf = VA_INVALID_ID;
vaDestroyBuffer(r->va_dpy, buffers[--count]);
} while (ret == OUTPUT_WRITE_OVERFLOW);
if (ret == OUTPUT_WRITE_FATAL)
r->error = errno;
for (i = 0; i < count; i++)
vaDestroyBuffer(r->va_dpy, buffers[i]);
r->frame_count++;
return;
bail:
for (i = 0; i < count; i++)
vaDestroyBuffer(r->va_dpy, buffers[i]);
if (output_buf != VA_INVALID_ID)
vaDestroyBuffer(r->va_dpy, output_buf);
}
static int
setup_vpp(struct vaapi_recorder *r)
{
VAStatus status;
status = vaCreateConfig(r->va_dpy, VAProfileNone,
VAEntrypointVideoProc, NULL, 0,
&r->vpp.cfg);
if (status != VA_STATUS_SUCCESS) {
weston_log("vaapi: failed to create VPP config\n");
return -1;
}
status = vaCreateContext(r->va_dpy, r->vpp.cfg, r->width, r->height,
0, NULL, 0, &r->vpp.ctx);
if (status != VA_STATUS_SUCCESS) {
weston_log("vaapi: failed to create VPP context\n");
goto err_cfg;
}
status = vaCreateBuffer(r->va_dpy, r->vpp.ctx,
VAProcPipelineParameterBufferType,
sizeof(VAProcPipelineParameterBuffer),
1, NULL, &r->vpp.pipeline_buf);
if (status != VA_STATUS_SUCCESS) {
weston_log("vaapi: failed to create VPP pipeline buffer\n");
goto err_ctx;
}
status = vaCreateSurfaces(r->va_dpy, VA_RT_FORMAT_YUV420,
r->width, r->height, &r->vpp.output, 1,
NULL, 0);
if (status != VA_STATUS_SUCCESS) {
weston_log("vaapi: failed to create YUV surface\n");
goto err_buf;
}
return 0;
err_buf:
vaDestroyBuffer(r->va_dpy, r->vpp.pipeline_buf);
err_ctx:
vaDestroyConfig(r->va_dpy, r->vpp.ctx);
err_cfg:
vaDestroyConfig(r->va_dpy, r->vpp.cfg);
return -1;
}
static void
vpp_destroy(struct vaapi_recorder *r)
{
vaDestroySurfaces(r->va_dpy, &r->vpp.output, 1);
vaDestroyBuffer(r->va_dpy, r->vpp.pipeline_buf);
vaDestroyConfig(r->va_dpy, r->vpp.ctx);
vaDestroyConfig(r->va_dpy, r->vpp.cfg);
}
static int
setup_worker_thread(struct vaapi_recorder *r)
{
pthread_mutex_init(&r->mutex, NULL);
pthread_cond_init(&r->input_cond, NULL);
pthread_create(&r->worker_thread, NULL, worker_thread_function, r);
return 1;
}
static void
destroy_worker_thread(struct vaapi_recorder *r)
{
pthread_mutex_lock(&r->mutex);
/* Make sure the worker thread finishes */
r->destroying = 1;
pthread_cond_signal(&r->input_cond);
pthread_mutex_unlock(&r->mutex);
pthread_join(r->worker_thread, NULL);
pthread_mutex_destroy(&r->mutex);
pthread_cond_destroy(&r->input_cond);
}
struct vaapi_recorder *
vaapi_recorder_create(int drm_fd, int width, int height, const char *filename)
{
struct vaapi_recorder *r;
VAStatus status;
int major, minor;
int flags;
r = zalloc(sizeof *r);
if (r == NULL)
return NULL;
r->width = width;
r->height = height;
r->drm_fd = drm_fd;
if (setup_worker_thread(r) < 0)
goto err_free;
flags = O_WRONLY | O_CREAT | O_TRUNC | O_CLOEXEC;
r->output_fd = open(filename, flags, 0644);
if (r->output_fd < 0)
goto err_thread;
r->va_dpy = vaGetDisplayDRM(drm_fd);
if (!r->va_dpy) {
weston_log("failed to create VA display\n");
goto err_fd;
}
status = vaInitialize(r->va_dpy, &major, &minor);
if (status != VA_STATUS_SUCCESS) {
weston_log("vaapi: failed to initialize display\n");
goto err_fd;
}
if (setup_vpp(r) < 0) {
weston_log("vaapi: failed to initialize VPP pipeline\n");
goto err_va_dpy;
}
if (setup_encoder(r) < 0) {
goto err_vpp;
}
return r;
err_vpp:
vpp_destroy(r);
err_va_dpy:
vaTerminate(r->va_dpy);
err_fd:
close(r->output_fd);
err_thread:
destroy_worker_thread(r);
err_free:
free(r);
return NULL;
}
void
vaapi_recorder_destroy(struct vaapi_recorder *r)
{
destroy_worker_thread(r);
encoder_destroy(r);
vpp_destroy(r);
vaTerminate(r->va_dpy);
close(r->output_fd);
close(r->drm_fd);
free(r);
}
static VAStatus
create_surface_from_fd(struct vaapi_recorder *r, int prime_fd,
int stride, VASurfaceID *surface)
{
VASurfaceAttrib va_attribs[2];
VASurfaceAttribExternalBuffers va_attrib_extbuf;
VAStatus status;
unsigned long buffer_fd = prime_fd;
va_attrib_extbuf.pixel_format = VA_FOURCC_BGRX;
va_attrib_extbuf.width = r->width;
va_attrib_extbuf.height = r->height;
va_attrib_extbuf.data_size = r->height * stride;
va_attrib_extbuf.num_planes = 1;
va_attrib_extbuf.pitches[0] = stride;
va_attrib_extbuf.offsets[0] = 0;
va_attrib_extbuf.buffers = &buffer_fd;
va_attrib_extbuf.num_buffers = 1;
va_attrib_extbuf.flags = 0;
va_attrib_extbuf.private_data = NULL;
va_attribs[0].type = VASurfaceAttribMemoryType;
va_attribs[0].flags = VA_SURFACE_ATTRIB_SETTABLE;
va_attribs[0].value.type = VAGenericValueTypeInteger;
va_attribs[0].value.value.i = VA_SURFACE_ATTRIB_MEM_TYPE_DRM_PRIME;
va_attribs[1].type = VASurfaceAttribExternalBufferDescriptor;
va_attribs[1].flags = VA_SURFACE_ATTRIB_SETTABLE;
va_attribs[1].value.type = VAGenericValueTypePointer;
va_attribs[1].value.value.p = &va_attrib_extbuf;
status = vaCreateSurfaces(r->va_dpy, VA_RT_FORMAT_RGB32,
r->width, r->height, surface, 1,
va_attribs, 2);
return status;
}
static VAStatus
convert_rgb_to_yuv(struct vaapi_recorder *r, VASurfaceID rgb_surface)
{
VAProcPipelineParameterBuffer *pipeline_param;
VAStatus status;
status = vaMapBuffer(r->va_dpy, r->vpp.pipeline_buf,
(void **) &pipeline_param);
if (status != VA_STATUS_SUCCESS)
return status;
memset(pipeline_param, 0, sizeof *pipeline_param);
pipeline_param->surface = rgb_surface;
pipeline_param->surface_color_standard = VAProcColorStandardNone;
pipeline_param->output_background_color = 0xff000000;
pipeline_param->output_color_standard = VAProcColorStandardNone;
status = vaUnmapBuffer(r->va_dpy, r->vpp.pipeline_buf);
if (status != VA_STATUS_SUCCESS)
return status;
status = vaBeginPicture(r->va_dpy, r->vpp.ctx, r->vpp.output);
if (status != VA_STATUS_SUCCESS)
return status;
status = vaRenderPicture(r->va_dpy, r->vpp.ctx,
&r->vpp.pipeline_buf, 1);
if (status != VA_STATUS_SUCCESS)
return status;
status = vaEndPicture(r->va_dpy, r->vpp.ctx);
if (status != VA_STATUS_SUCCESS)
return status;
return status;
}
static void
recorder_frame(struct vaapi_recorder *r)
{
VASurfaceID rgb_surface;
VAStatus status;
status = create_surface_from_fd(r, r->input.prime_fd,
r->input.stride, &rgb_surface);
if (status != VA_STATUS_SUCCESS) {
weston_log("[libva recorder] "
"failed to create surface from bo\n");
return;
}
close(r->input.prime_fd);
status = convert_rgb_to_yuv(r, rgb_surface);
if (status != VA_STATUS_SUCCESS) {
weston_log("[libva recorder] "
"color space conversion failed\n");
return;
}
encoder_encode(r, r->vpp.output);
vaDestroySurfaces(r->va_dpy, &rgb_surface, 1);
}
static void *
worker_thread_function(void *data)
{
struct vaapi_recorder *r = data;
pthread_mutex_lock(&r->mutex);
while (!r->destroying) {
if (!r->input.valid)
pthread_cond_wait(&r->input_cond, &r->mutex);
/* If the thread is awaken by destroy_worker_thread(),
* there might not be valid input */
if (!r->input.valid)
continue;
recorder_frame(r);
r->input.valid = 0;
}
pthread_mutex_unlock(&r->mutex);
return NULL;
}
int
vaapi_recorder_frame(struct vaapi_recorder *r, int prime_fd, int stride)
{
int ret = 0;
pthread_mutex_lock(&r->mutex);
if (r->error) {
errno = r->error;
ret = -1;
goto unlock;
}
/* The mutex is never released while encoding, so this point should
* never be reached if input.valid is true. */
assert(!r->input.valid);
r->input.prime_fd = prime_fd;
r->input.stride = stride;
r->input.valid = 1;
pthread_cond_signal(&r->input_cond);
unlock:
pthread_mutex_unlock(&r->mutex);
return ret;
}