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fef2162b6e
FFmpeg/libavcodec/vaapi_encode.c
Mark Thompson fef2162b6e vaapi_encode: Add flag to mark encoders supporting only constant-quality 
And set it for MJPEG.
2018-10-27 19:35:35 +01:00

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/*
* This file is part of FFmpeg.
*
* FFmpeg is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* FFmpeg 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with FFmpeg; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include <inttypes.h>
#include <string.h>
#include "libavutil/avassert.h"
#include "libavutil/common.h"
#include "libavutil/log.h"
#include "libavutil/pixdesc.h"
#include "vaapi_encode.h"
#include "avcodec.h"
static const char * const picture_type_name[] = { "IDR", "I", "P", "B" };
static int vaapi_encode_make_packed_header(AVCodecContext *avctx,
VAAPIEncodePicture *pic,
int type, char *data, size_t bit_len)
{
VAAPIEncodeContext *ctx = avctx->priv_data;
VAStatus vas;
VABufferID param_buffer, data_buffer;
VABufferID *tmp;
VAEncPackedHeaderParameterBuffer params = {
.type = type,
.bit_length = bit_len,
.has_emulation_bytes = 1,
};
tmp = av_realloc_array(pic->param_buffers, sizeof(*tmp), pic->nb_param_buffers + 2);
if (!tmp)
return AVERROR(ENOMEM);
pic->param_buffers = tmp;
vas = vaCreateBuffer(ctx->hwctx->display, ctx->va_context,
VAEncPackedHeaderParameterBufferType,
sizeof(params), 1, &params, &param_buffer);
if (vas != VA_STATUS_SUCCESS) {
av_log(avctx, AV_LOG_ERROR, "Failed to create parameter buffer "
"for packed header (type %d): %d (%s).\n",
type, vas, vaErrorStr(vas));
return AVERROR(EIO);
}
pic->param_buffers[pic->nb_param_buffers++] = param_buffer;
vas = vaCreateBuffer(ctx->hwctx->display, ctx->va_context,
VAEncPackedHeaderDataBufferType,
(bit_len + 7) / 8, 1, data, &data_buffer);
if (vas != VA_STATUS_SUCCESS) {
av_log(avctx, AV_LOG_ERROR, "Failed to create data buffer "
"for packed header (type %d): %d (%s).\n",
type, vas, vaErrorStr(vas));
return AVERROR(EIO);
}
pic->param_buffers[pic->nb_param_buffers++] = data_buffer;
av_log(avctx, AV_LOG_DEBUG, "Packed header buffer (%d) is %#x/%#x "
"(%zu bits).\n", type, param_buffer, data_buffer, bit_len);
return 0;
}
static int vaapi_encode_make_param_buffer(AVCodecContext *avctx,
VAAPIEncodePicture *pic,
int type, char *data, size_t len)
{
VAAPIEncodeContext *ctx = avctx->priv_data;
VAStatus vas;
VABufferID *tmp;
VABufferID buffer;
tmp = av_realloc_array(pic->param_buffers, sizeof(*tmp), pic->nb_param_buffers + 1);
if (!tmp)
return AVERROR(ENOMEM);
pic->param_buffers = tmp;
vas = vaCreateBuffer(ctx->hwctx->display, ctx->va_context,
type, len, 1, data, &buffer);
if (vas != VA_STATUS_SUCCESS) {
av_log(avctx, AV_LOG_ERROR, "Failed to create parameter buffer "
"(type %d): %d (%s).\n", type, vas, vaErrorStr(vas));
return AVERROR(EIO);
}
pic->param_buffers[pic->nb_param_buffers++] = buffer;
av_log(avctx, AV_LOG_DEBUG, "Param buffer (%d) is %#x.\n",
type, buffer);
return 0;
}
static int vaapi_encode_wait(AVCodecContext *avctx,
VAAPIEncodePicture *pic)
{
VAAPIEncodeContext *ctx = avctx->priv_data;
VAStatus vas;
av_assert0(pic->encode_issued);
if (pic->encode_complete) {
// Already waited for this picture.
return 0;
}
av_log(avctx, AV_LOG_DEBUG, "Sync to pic %"PRId64"/%"PRId64" "
"(input surface %#x).\n", pic->display_order,
pic->encode_order, pic->input_surface);
vas = vaSyncSurface(ctx->hwctx->display, pic->input_surface);
if (vas != VA_STATUS_SUCCESS) {
av_log(avctx, AV_LOG_ERROR, "Failed to sync to picture completion: "
"%d (%s).\n", vas, vaErrorStr(vas));
return AVERROR(EIO);
}
// Input is definitely finished with now.
av_frame_free(&pic->input_image);
pic->encode_complete = 1;
return 0;
}
static int vaapi_encode_issue(AVCodecContext *avctx,
VAAPIEncodePicture *pic)
{
VAAPIEncodeContext *ctx = avctx->priv_data;
VAAPIEncodeSlice *slice;
VAStatus vas;
int err, i;
char data[MAX_PARAM_BUFFER_SIZE];
size_t bit_len;
av_log(avctx, AV_LOG_DEBUG, "Issuing encode for pic %"PRId64"/%"PRId64" "
"as type %s.\n", pic->display_order, pic->encode_order,
picture_type_name[pic->type]);
if (pic->nb_refs == 0) {
av_log(avctx, AV_LOG_DEBUG, "No reference pictures.\n");
} else {
av_log(avctx, AV_LOG_DEBUG, "Refers to:");
for (i = 0; i < pic->nb_refs; i++) {
av_log(avctx, AV_LOG_DEBUG, " %"PRId64"/%"PRId64,
pic->refs[i]->display_order, pic->refs[i]->encode_order);
}
av_log(avctx, AV_LOG_DEBUG, ".\n");
}
av_assert0(pic->input_available && !pic->encode_issued);
for (i = 0; i < pic->nb_refs; i++) {
av_assert0(pic->refs[i]);
// If we are serialised then the references must have already
// completed. If not, they must have been issued but need not
// have completed yet.
if (ctx->issue_mode == ISSUE_MODE_SERIALISE_EVERYTHING)
av_assert0(pic->refs[i]->encode_complete);
else
av_assert0(pic->refs[i]->encode_issued);
}
av_log(avctx, AV_LOG_DEBUG, "Input surface is %#x.\n", pic->input_surface);
pic->recon_image = av_frame_alloc();
if (!pic->recon_image) {
err = AVERROR(ENOMEM);
goto fail;
}
err = av_hwframe_get_buffer(ctx->recon_frames_ref, pic->recon_image, 0);
if (err < 0) {
err = AVERROR(ENOMEM);
goto fail;
}
pic->recon_surface = (VASurfaceID)(uintptr_t)pic->recon_image->data[3];
av_log(avctx, AV_LOG_DEBUG, "Recon surface is %#x.\n", pic->recon_surface);
pic->output_buffer_ref = av_buffer_pool_get(ctx->output_buffer_pool);
if (!pic->output_buffer_ref) {
err = AVERROR(ENOMEM);
goto fail;
}
pic->output_buffer = (VABufferID)(uintptr_t)pic->output_buffer_ref->data;
av_log(avctx, AV_LOG_DEBUG, "Output buffer is %#x.\n",
pic->output_buffer);
if (ctx->codec->picture_params_size > 0) {
pic->codec_picture_params = av_malloc(ctx->codec->picture_params_size);
if (!pic->codec_picture_params)
goto fail;
memcpy(pic->codec_picture_params, ctx->codec_picture_params,
ctx->codec->picture_params_size);
} else {
av_assert0(!ctx->codec_picture_params);
}
pic->nb_param_buffers = 0;
if (pic->type == PICTURE_TYPE_IDR && ctx->codec->init_sequence_params) {
err = vaapi_encode_make_param_buffer(avctx, pic,
VAEncSequenceParameterBufferType,
ctx->codec_sequence_params,
ctx->codec->sequence_params_size);
if (err < 0)
goto fail;
}
if (pic->type == PICTURE_TYPE_IDR) {
for (i = 0; i < ctx->nb_global_params; i++) {
err = vaapi_encode_make_param_buffer(avctx, pic,
VAEncMiscParameterBufferType,
(char*)ctx->global_params[i],
ctx->global_params_size[i]);
if (err < 0)
goto fail;
}
}
if (ctx->codec->init_picture_params) {
err = ctx->codec->init_picture_params(avctx, pic);
if (err < 0) {
av_log(avctx, AV_LOG_ERROR, "Failed to initialise picture "
"parameters: %d.\n", err);
goto fail;
}
err = vaapi_encode_make_param_buffer(avctx, pic,
VAEncPictureParameterBufferType,
pic->codec_picture_params,
ctx->codec->picture_params_size);
if (err < 0)
goto fail;
}
if (pic->type == PICTURE_TYPE_IDR) {
if (ctx->va_packed_headers & VA_ENC_PACKED_HEADER_SEQUENCE &&
ctx->codec->write_sequence_header) {
bit_len = 8 * sizeof(data);
err = ctx->codec->write_sequence_header(avctx, data, &bit_len);
if (err < 0) {
av_log(avctx, AV_LOG_ERROR, "Failed to write per-sequence "
"header: %d.\n", err);
goto fail;
}
err = vaapi_encode_make_packed_header(avctx, pic,
ctx->codec->sequence_header_type,
data, bit_len);
if (err < 0)
goto fail;
}
}
if (ctx->va_packed_headers & VA_ENC_PACKED_HEADER_PICTURE &&
ctx->codec->write_picture_header) {
bit_len = 8 * sizeof(data);
err = ctx->codec->write_picture_header(avctx, pic, data, &bit_len);
if (err < 0) {
av_log(avctx, AV_LOG_ERROR, "Failed to write per-picture "
"header: %d.\n", err);
goto fail;
}
err = vaapi_encode_make_packed_header(avctx, pic,
ctx->codec->picture_header_type,
data, bit_len);
if (err < 0)
goto fail;
}
if (ctx->codec->write_extra_buffer) {
for (i = 0;; i++) {
size_t len = sizeof(data);
int type;
err = ctx->codec->write_extra_buffer(avctx, pic, i, &type,
data, &len);
if (err == AVERROR_EOF)
break;
if (err < 0) {
av_log(avctx, AV_LOG_ERROR, "Failed to write extra "
"buffer %d: %d.\n", i, err);
goto fail;
}
err = vaapi_encode_make_param_buffer(avctx, pic, type,
data, len);
if (err < 0)
goto fail;
}
}
if (ctx->va_packed_headers & VA_ENC_PACKED_HEADER_MISC &&
ctx->codec->write_extra_header) {
for (i = 0;; i++) {
int type;
bit_len = 8 * sizeof(data);
err = ctx->codec->write_extra_header(avctx, pic, i, &type,
data, &bit_len);
if (err == AVERROR_EOF)
break;
if (err < 0) {
av_log(avctx, AV_LOG_ERROR, "Failed to write extra "
"header %d: %d.\n", i, err);
goto fail;
}
err = vaapi_encode_make_packed_header(avctx, pic, type,
data, bit_len);
if (err < 0)
goto fail;
}
}
if (pic->nb_slices == 0)
pic->nb_slices = ctx->nb_slices;
if (pic->nb_slices > 0) {
int rounding;
pic->slices = av_mallocz_array(pic->nb_slices, sizeof(*pic->slices));
if (!pic->slices) {
err = AVERROR(ENOMEM);
goto fail;
}
for (i = 0; i < pic->nb_slices; i++)
pic->slices[i].row_size = ctx->slice_size;
rounding = ctx->slice_block_rows - ctx->nb_slices * ctx->slice_size;
if (rounding > 0) {
// Place rounding error at top and bottom of frame.
av_assert0(rounding < pic->nb_slices);
// Some Intel drivers contain a bug where the encoder will fail
// if the last slice is smaller than the one before it. Since
// that's straightforward to avoid here, just do so.
if (rounding <= 2) {
for (i = 0; i < rounding; i++)
++pic->slices[i].row_size;
} else {
for (i = 0; i < (rounding + 1) / 2; i++)
++pic->slices[pic->nb_slices - i - 1].row_size;
for (i = 0; i < rounding / 2; i++)
++pic->slices[i].row_size;
}
} else if (rounding < 0) {
// Remove rounding error from last slice only.
av_assert0(rounding < ctx->slice_size);
pic->slices[pic->nb_slices - 1].row_size += rounding;
}
}
for (i = 0; i < pic->nb_slices; i++) {
slice = &pic->slices[i];
slice->index = i;
if (i == 0) {
slice->row_start = 0;
slice->block_start = 0;
} else {
const VAAPIEncodeSlice *prev = &pic->slices[i - 1];
slice->row_start = prev->row_start + prev->row_size;
slice->block_start = prev->block_start + prev->block_size;
}
slice->block_size = slice->row_size * ctx->slice_block_cols;
av_log(avctx, AV_LOG_DEBUG, "Slice %d: %d-%d (%d rows), "
"%d-%d (%d blocks).\n", i, slice->row_start,
slice->row_start + slice->row_size - 1, slice->row_size,
slice->block_start, slice->block_start + slice->block_size - 1,
slice->block_size);
if (ctx->codec->slice_params_size > 0) {
slice->codec_slice_params = av_mallocz(ctx->codec->slice_params_size);
if (!slice->codec_slice_params) {
err = AVERROR(ENOMEM);
goto fail;
}
}
if (ctx->codec->init_slice_params) {
err = ctx->codec->init_slice_params(avctx, pic, slice);
if (err < 0) {
av_log(avctx, AV_LOG_ERROR, "Failed to initialise slice "
"parameters: %d.\n", err);
goto fail;
}
}
if (ctx->va_packed_headers & VA_ENC_PACKED_HEADER_SLICE &&
ctx->codec->write_slice_header) {
bit_len = 8 * sizeof(data);
err = ctx->codec->write_slice_header(avctx, pic, slice,
data, &bit_len);
if (err < 0) {
av_log(avctx, AV_LOG_ERROR, "Failed to write per-slice "
"header: %d.\n", err);
goto fail;
}
err = vaapi_encode_make_packed_header(avctx, pic,
ctx->codec->slice_header_type,
data, bit_len);
if (err < 0)
goto fail;
}
if (ctx->codec->init_slice_params) {
err = vaapi_encode_make_param_buffer(avctx, pic,
VAEncSliceParameterBufferType,
slice->codec_slice_params,
ctx->codec->slice_params_size);
if (err < 0)
goto fail;
}
}
vas = vaBeginPicture(ctx->hwctx->display, ctx->va_context,
pic->input_surface);
if (vas != VA_STATUS_SUCCESS) {
av_log(avctx, AV_LOG_ERROR, "Failed to begin picture encode issue: "
"%d (%s).\n", vas, vaErrorStr(vas));
err = AVERROR(EIO);
goto fail_with_picture;
}
vas = vaRenderPicture(ctx->hwctx->display, ctx->va_context,
pic->param_buffers, pic->nb_param_buffers);
if (vas != VA_STATUS_SUCCESS) {
av_log(avctx, AV_LOG_ERROR, "Failed to upload encode parameters: "
"%d (%s).\n", vas, vaErrorStr(vas));
err = AVERROR(EIO);
goto fail_with_picture;
}
vas = vaEndPicture(ctx->hwctx->display, ctx->va_context);
if (vas != VA_STATUS_SUCCESS) {
av_log(avctx, AV_LOG_ERROR, "Failed to end picture encode issue: "
"%d (%s).\n", vas, vaErrorStr(vas));
err = AVERROR(EIO);
// vaRenderPicture() has been called here, so we should not destroy
// the parameter buffers unless separate destruction is required.
if (CONFIG_VAAPI_1 || ctx->hwctx->driver_quirks &
AV_VAAPI_DRIVER_QUIRK_RENDER_PARAM_BUFFERS)
goto fail;
else
goto fail_at_end;
}
if (CONFIG_VAAPI_1 || ctx->hwctx->driver_quirks &
AV_VAAPI_DRIVER_QUIRK_RENDER_PARAM_BUFFERS) {
for (i = 0; i < pic->nb_param_buffers; i++) {
vas = vaDestroyBuffer(ctx->hwctx->display,
pic->param_buffers[i]);
if (vas != VA_STATUS_SUCCESS) {
av_log(avctx, AV_LOG_ERROR, "Failed to destroy "
"param buffer %#x: %d (%s).\n",
pic->param_buffers[i], vas, vaErrorStr(vas));
// And ignore.
}
}
}
pic->encode_issued = 1;
if (ctx->issue_mode == ISSUE_MODE_SERIALISE_EVERYTHING)
return vaapi_encode_wait(avctx, pic);
else
return 0;
fail_with_picture:
vaEndPicture(ctx->hwctx->display, ctx->va_context);
fail:
for(i = 0; i < pic->nb_param_buffers; i++)
vaDestroyBuffer(ctx->hwctx->display, pic->param_buffers[i]);
for (i = 0; i < pic->nb_slices; i++) {
if (pic->slices) {
av_freep(&pic->slices[i].priv_data);
av_freep(&pic->slices[i].codec_slice_params);
}
}
fail_at_end:
av_freep(&pic->codec_picture_params);
av_freep(&pic->param_buffers);
av_freep(&pic->slices);
av_frame_free(&pic->recon_image);
av_buffer_unref(&pic->output_buffer_ref);
pic->output_buffer = VA_INVALID_ID;
return err;
}
static int vaapi_encode_output(AVCodecContext *avctx,
VAAPIEncodePicture *pic, AVPacket *pkt)
{
VAAPIEncodeContext *ctx = avctx->priv_data;
VACodedBufferSegment *buf_list, *buf;
VAStatus vas;
int err;
err = vaapi_encode_wait(avctx, pic);
if (err < 0)
return err;
buf_list = NULL;
vas = vaMapBuffer(ctx->hwctx->display, pic->output_buffer,
(void**)&buf_list);
if (vas != VA_STATUS_SUCCESS) {
av_log(avctx, AV_LOG_ERROR, "Failed to map output buffers: "
"%d (%s).\n", vas, vaErrorStr(vas));
err = AVERROR(EIO);
goto fail;
}
for (buf = buf_list; buf; buf = buf->next) {
av_log(avctx, AV_LOG_DEBUG, "Output buffer: %u bytes "
"(status %08x).\n", buf->size, buf->status);
err = av_new_packet(pkt, buf->size);
if (err < 0)
goto fail_mapped;
memcpy(pkt->data, buf->buf, buf->size);
}
if (pic->type == PICTURE_TYPE_IDR)
pkt->flags |= AV_PKT_FLAG_KEY;
pkt->pts = pic->pts;
vas = vaUnmapBuffer(ctx->hwctx->display, pic->output_buffer);
if (vas != VA_STATUS_SUCCESS) {
av_log(avctx, AV_LOG_ERROR, "Failed to unmap output buffers: "
"%d (%s).\n", vas, vaErrorStr(vas));
err = AVERROR(EIO);
goto fail;
}
av_buffer_unref(&pic->output_buffer_ref);
pic->output_buffer = VA_INVALID_ID;
av_log(avctx, AV_LOG_DEBUG, "Output read for pic %"PRId64"/%"PRId64".\n",
pic->display_order, pic->encode_order);
return 0;
fail_mapped:
vaUnmapBuffer(ctx->hwctx->display, pic->output_buffer);
fail:
av_buffer_unref(&pic->output_buffer_ref);
pic->output_buffer = VA_INVALID_ID;
return err;
}
static int vaapi_encode_discard(AVCodecContext *avctx,
VAAPIEncodePicture *pic)
{
vaapi_encode_wait(avctx, pic);
if (pic->output_buffer_ref) {
av_log(avctx, AV_LOG_DEBUG, "Discard output for pic "
"%"PRId64"/%"PRId64".\n",
pic->display_order, pic->encode_order);
av_buffer_unref(&pic->output_buffer_ref);
pic->output_buffer = VA_INVALID_ID;
}
return 0;
}
static VAAPIEncodePicture *vaapi_encode_alloc(void)
{
VAAPIEncodePicture *pic;
pic = av_mallocz(sizeof(*pic));
if (!pic)
return NULL;
pic->input_surface = VA_INVALID_ID;
pic->recon_surface = VA_INVALID_ID;
pic->output_buffer = VA_INVALID_ID;
return pic;
}
static int vaapi_encode_free(AVCodecContext *avctx,
VAAPIEncodePicture *pic)
{
int i;
if (pic->encode_issued)
vaapi_encode_discard(avctx, pic);
for (i = 0; i < pic->nb_slices; i++) {
if (pic->slices) {
av_freep(&pic->slices[i].priv_data);
av_freep(&pic->slices[i].codec_slice_params);
}
}
av_freep(&pic->codec_picture_params);
av_frame_free(&pic->input_image);
av_frame_free(&pic->recon_image);
av_freep(&pic->param_buffers);
av_freep(&pic->slices);
// Output buffer should already be destroyed.
av_assert0(pic->output_buffer == VA_INVALID_ID);
av_freep(&pic->priv_data);
av_freep(&pic->codec_picture_params);
av_free(pic);
return 0;
}
static int vaapi_encode_step(AVCodecContext *avctx,
VAAPIEncodePicture *target)
{
VAAPIEncodeContext *ctx = avctx->priv_data;
VAAPIEncodePicture *pic;
int i, err;
if (ctx->issue_mode == ISSUE_MODE_SERIALISE_EVERYTHING ||
ctx->issue_mode == ISSUE_MODE_MINIMISE_LATENCY) {
// These two modes are equivalent, except that we wait for
// immediate completion on each operation if serialised.
if (!target) {
// No target, nothing to do yet.
return 0;
}
if (target->encode_complete) {
// Already done.
return 0;
}
pic = target;
for (i = 0; i < pic->nb_refs; i++) {
if (!pic->refs[i]->encode_complete) {
err = vaapi_encode_step(avctx, pic->refs[i]);
if (err < 0)
return err;
}
}
err = vaapi_encode_issue(avctx, pic);
if (err < 0)
return err;
} else if (ctx->issue_mode == ISSUE_MODE_MAXIMISE_THROUGHPUT) {
int activity;
// Run through the list of all available pictures repeatedly
// and issue the first one found which has all dependencies
// available (including previously-issued but not necessarily
// completed pictures).
do {
activity = 0;
for (pic = ctx->pic_start; pic; pic = pic->next) {
if (!pic->input_available || pic->encode_issued)
continue;
for (i = 0; i < pic->nb_refs; i++) {
if (!pic->refs[i]->encode_issued)
break;
}
if (i < pic->nb_refs)
continue;
err = vaapi_encode_issue(avctx, pic);
if (err < 0)
return err;
activity = 1;
// Start again from the beginning of the list,
// because issuing this picture may have satisfied
// forward dependencies of earlier ones.
break;
}
} while(activity);
// If we had a defined target for this step then it will
// always have been issued by now.
if (target) {
av_assert0(target->encode_issued && "broken dependencies?");
}
} else {
av_assert0(0);
}
return 0;
}
static int vaapi_encode_get_next(AVCodecContext *avctx,
VAAPIEncodePicture **pic_out)
{
VAAPIEncodeContext *ctx = avctx->priv_data;
VAAPIEncodePicture *start, *end, *pic;
int i;
for (pic = ctx->pic_start; pic; pic = pic->next) {
if (pic->next)
av_assert0(pic->display_order + 1 == pic->next->display_order);
if (pic->display_order == ctx->input_order) {
*pic_out = pic;
return 0;
}
}
pic = vaapi_encode_alloc();
if (!pic)
return AVERROR(ENOMEM);
if (ctx->input_order == 0 || ctx->force_idr ||
ctx->gop_counter >= ctx->gop_size) {
pic->type = PICTURE_TYPE_IDR;
ctx->force_idr = 0;
ctx->gop_counter = 1;
ctx->p_counter = 0;
} else if (ctx->p_counter >= ctx->p_per_i) {
pic->type = PICTURE_TYPE_I;
++ctx->gop_counter;
ctx->p_counter = 0;
} else {
pic->type = PICTURE_TYPE_P;
pic->refs[0] = ctx->pic_end;
pic->nb_refs = 1;
++ctx->gop_counter;
++ctx->p_counter;
}
start = end = pic;
if (pic->type != PICTURE_TYPE_IDR) {
// If that was not an IDR frame, add B-frames display-before and
// encode-after it, but not exceeding the GOP size.
for (i = 0; i < ctx->b_per_p &&
ctx->gop_counter < ctx->gop_size; i++) {
pic = vaapi_encode_alloc();
if (!pic)
goto fail;
pic->type = PICTURE_TYPE_B;
pic->refs[0] = ctx->pic_end;
pic->refs[1] = end;
pic->nb_refs = 2;
pic->next = start;
pic->display_order = ctx->input_order + ctx->b_per_p - i - 1;
pic->encode_order = pic->display_order + 1;
start = pic;
++ctx->gop_counter;
}
}
if (ctx->input_order == 0) {
pic->display_order = 0;
pic->encode_order = 0;
ctx->pic_start = ctx->pic_end = pic;
} else {
for (i = 0, pic = start; pic; i++, pic = pic->next) {
pic->display_order = ctx->input_order + i;
if (end->type == PICTURE_TYPE_IDR)
pic->encode_order = ctx->input_order + i;
else if (pic == end)
pic->encode_order = ctx->input_order;
else
pic->encode_order = ctx->input_order + i + 1;
}
av_assert0(ctx->pic_end);
ctx->pic_end->next = start;
ctx->pic_end = end;
}
*pic_out = start;
av_log(avctx, AV_LOG_DEBUG, "Pictures:");
for (pic = ctx->pic_start; pic; pic = pic->next) {
av_log(avctx, AV_LOG_DEBUG, " %s (%"PRId64"/%"PRId64")",
picture_type_name[pic->type],
pic->display_order, pic->encode_order);
}
av_log(avctx, AV_LOG_DEBUG, "\n");
return 0;
fail:
while (start) {
pic = start->next;
vaapi_encode_free(avctx, start);
start = pic;
}
return AVERROR(ENOMEM);
}
static int vaapi_encode_truncate_gop(AVCodecContext *avctx)
{
VAAPIEncodeContext *ctx = avctx->priv_data;
VAAPIEncodePicture *pic, *last_pic, *next;
av_assert0(!ctx->pic_start || ctx->pic_start->input_available);
// Find the last picture we actually have input for.
for (pic = ctx->pic_start; pic; pic = pic->next) {
if (!pic->input_available)
break;
last_pic = pic;
}
if (pic) {
if (last_pic->type == PICTURE_TYPE_B) {
// Some fixing up is required. Change the type of this
// picture to P, then modify preceding B references which
// point beyond it to point at it instead.
last_pic->type = PICTURE_TYPE_P;
last_pic->encode_order = last_pic->refs[1]->encode_order;
for (pic = ctx->pic_start; pic != last_pic; pic = pic->next) {
if (pic->type == PICTURE_TYPE_B &&
pic->refs[1] == last_pic->refs[1])
pic->refs[1] = last_pic;
}
last_pic->nb_refs = 1;
last_pic->refs[1] = NULL;
} else {
// We can use the current structure (no references point
// beyond the end), but there are unused pics to discard.
}
// Discard all following pics, they will never be used.
for (pic = last_pic->next; pic; pic = next) {
next = pic->next;
vaapi_encode_free(avctx, pic);
}
last_pic->next = NULL;
ctx->pic_end = last_pic;
} else {
// Input is available for all pictures, so we don't need to
// mangle anything.
}
av_log(avctx, AV_LOG_DEBUG, "Pictures ending truncated GOP:");
for (pic = ctx->pic_start; pic; pic = pic->next) {
av_log(avctx, AV_LOG_DEBUG, " %s (%"PRId64"/%"PRId64")",
picture_type_name[pic->type],
pic->display_order, pic->encode_order);
}
av_log(avctx, AV_LOG_DEBUG, "\n");
return 0;
}
static int vaapi_encode_clear_old(AVCodecContext *avctx)
{
VAAPIEncodeContext *ctx = avctx->priv_data;
VAAPIEncodePicture *pic, *old;
int i;
while (ctx->pic_start != ctx->pic_end) {
old = ctx->pic_start;
if (old->encode_order > ctx->output_order)
break;
for (pic = old->next; pic; pic = pic->next) {
if (pic->encode_complete)
continue;
for (i = 0; i < pic->nb_refs; i++) {
if (pic->refs[i] == old) {
// We still need this picture because it's referred to
// directly by a later one, so it and all following
// pictures have to stay.
return 0;
}
}
}
pic = ctx->pic_start;
ctx->pic_start = pic->next;
vaapi_encode_free(avctx, pic);
}
return 0;
}
int ff_vaapi_encode2(AVCodecContext *avctx, AVPacket *pkt,
const AVFrame *input_image, int *got_packet)
{
VAAPIEncodeContext *ctx = avctx->priv_data;
VAAPIEncodePicture *pic;
int err;
if (input_image) {
av_log(avctx, AV_LOG_DEBUG, "Encode frame: %ux%u (%"PRId64").\n",
input_image->width, input_image->height, input_image->pts);
if (input_image->pict_type == AV_PICTURE_TYPE_I) {
err = vaapi_encode_truncate_gop(avctx);
if (err < 0)
goto fail;
ctx->force_idr = 1;
}
err = vaapi_encode_get_next(avctx, &pic);
if (err) {
av_log(avctx, AV_LOG_ERROR, "Input setup failed: %d.\n", err);
return err;
}
pic->input_image = av_frame_alloc();
if (!pic->input_image) {
err = AVERROR(ENOMEM);
goto fail;
}
err = av_frame_ref(pic->input_image, input_image);
if (err < 0)
goto fail;
pic->input_surface = (VASurfaceID)(uintptr_t)input_image->data[3];
pic->pts = input_image->pts;
if (ctx->input_order == 0)
ctx->first_pts = pic->pts;
if (ctx->input_order == ctx->decode_delay)
ctx->dts_pts_diff = pic->pts - ctx->first_pts;
if (ctx->output_delay > 0)
ctx->ts_ring[ctx->input_order % (3 * ctx->output_delay)] = pic->pts;
pic->input_available = 1;
} else {
if (!ctx->end_of_stream) {
err = vaapi_encode_truncate_gop(avctx);
if (err < 0)
goto fail;
ctx->end_of_stream = 1;
}
}
++ctx->input_order;
++ctx->output_order;
av_assert0(ctx->output_order + ctx->output_delay + 1 == ctx->input_order);
for (pic = ctx->pic_start; pic; pic = pic->next)
if (pic->encode_order == ctx->output_order)
break;
// pic can be null here if we don't have a specific target in this
// iteration. We might still issue encodes if things can be overlapped,
// even though we don't intend to output anything.
err = vaapi_encode_step(avctx, pic);
if (err < 0) {
av_log(avctx, AV_LOG_ERROR, "Encode failed: %d.\n", err);
goto fail;
}
if (!pic) {
*got_packet = 0;
} else {
err = vaapi_encode_output(avctx, pic, pkt);
if (err < 0) {
av_log(avctx, AV_LOG_ERROR, "Output failed: %d.\n", err);
goto fail;
}
if (ctx->output_delay == 0) {
pkt->dts = pkt->pts;
} else if (ctx->output_order < ctx->decode_delay) {
if (ctx->ts_ring[ctx->output_order] < INT64_MIN + ctx->dts_pts_diff)
pkt->dts = INT64_MIN;
else
pkt->dts = ctx->ts_ring[ctx->output_order] - ctx->dts_pts_diff;
} else {
pkt->dts = ctx->ts_ring[(ctx->output_order - ctx->decode_delay) %
(3 * ctx->output_delay)];
}
*got_packet = 1;
}
err = vaapi_encode_clear_old(avctx);
if (err < 0) {
av_log(avctx, AV_LOG_ERROR, "List clearing failed: %d.\n", err);
goto fail;
}
return 0;
fail:
// Unclear what to clean up on failure. There are probably some things we
// could do usefully clean up here, but for now just leave them for uninit()
// to do instead.
return err;
}
static av_cold void vaapi_encode_add_global_param(AVCodecContext *avctx,
VAEncMiscParameterBuffer *buffer,
size_t size)
{
VAAPIEncodeContext *ctx = avctx->priv_data;
av_assert0(ctx->nb_global_params < MAX_GLOBAL_PARAMS);
ctx->global_params [ctx->nb_global_params] = buffer;
ctx->global_params_size[ctx->nb_global_params] = size;
++ctx->nb_global_params;
}
typedef struct VAAPIEncodeRTFormat {
const char *name;
unsigned int value;
int depth;
int nb_components;
int log2_chroma_w;
int log2_chroma_h;
} VAAPIEncodeRTFormat;
static const VAAPIEncodeRTFormat vaapi_encode_rt_formats[] = {
{ "YUV400", VA_RT_FORMAT_YUV400, 8, 1, },
{ "YUV420", VA_RT_FORMAT_YUV420, 8, 3, 1, 1 },
{ "YUV422", VA_RT_FORMAT_YUV422, 8, 3, 1, 0 },
{ "YUV444", VA_RT_FORMAT_YUV444, 8, 3, 0, 0 },
{ "YUV411", VA_RT_FORMAT_YUV411, 8, 3, 2, 0 },
#if VA_CHECK_VERSION(0, 38, 1)
{ "YUV420_10", VA_RT_FORMAT_YUV420_10BPP, 10, 3, 1, 1 },
#endif
};
static const VAEntrypoint vaapi_encode_entrypoints_normal[] = {
VAEntrypointEncSlice,
VAEntrypointEncPicture,
#if VA_CHECK_VERSION(0, 39, 2)
VAEntrypointEncSliceLP,
#endif
0
};
#if VA_CHECK_VERSION(0, 39, 2)
static const VAEntrypoint vaapi_encode_entrypoints_low_power[] = {
VAEntrypointEncSliceLP,
0
};
#endif
static av_cold int vaapi_encode_profile_entrypoint(AVCodecContext *avctx)
{
VAAPIEncodeContext *ctx = avctx->priv_data;
VAProfile *va_profiles = NULL;
VAEntrypoint *va_entrypoints = NULL;
VAStatus vas;
const VAEntrypoint *usable_entrypoints;
const VAAPIEncodeProfile *profile;
const AVPixFmtDescriptor *desc;
VAConfigAttrib rt_format_attr;
const VAAPIEncodeRTFormat *rt_format;
const char *profile_string, *entrypoint_string;
int i, j, n, depth, err;
if (ctx->low_power) {
#if VA_CHECK_VERSION(0, 39, 2)
usable_entrypoints = vaapi_encode_entrypoints_low_power;
#else
av_log(avctx, AV_LOG_ERROR, "Low-power encoding is not "
"supported with this VAAPI version.\n");
return AVERROR(EINVAL);
#endif
} else {
usable_entrypoints = vaapi_encode_entrypoints_normal;
}
desc = av_pix_fmt_desc_get(ctx->input_frames->sw_format);
if (!desc) {
av_log(avctx, AV_LOG_ERROR, "Invalid input pixfmt (%d).\n",
ctx->input_frames->sw_format);
return AVERROR(EINVAL);
}
depth = desc->comp[0].depth;
for (i = 1; i < desc->nb_components; i++) {
if (desc->comp[i].depth != depth) {
av_log(avctx, AV_LOG_ERROR, "Invalid input pixfmt (%s).\n",
desc->name);
return AVERROR(EINVAL);
}
}
av_log(avctx, AV_LOG_VERBOSE, "Input surface format is %s.\n",
desc->name);
n = vaMaxNumProfiles(ctx->hwctx->display);
va_profiles = av_malloc_array(n, sizeof(VAProfile));
if (!va_profiles) {
err = AVERROR(ENOMEM);
goto fail;
}
vas = vaQueryConfigProfiles(ctx->hwctx->display, va_profiles, &n);
if (vas != VA_STATUS_SUCCESS) {
av_log(avctx, AV_LOG_ERROR, "Failed to query profiles: %d (%s).\n",
vas, vaErrorStr(vas));
err = AVERROR_EXTERNAL;
goto fail;
}
av_assert0(ctx->codec->profiles);
for (i = 0; (ctx->codec->profiles[i].av_profile !=
FF_PROFILE_UNKNOWN); i++) {
profile = &ctx->codec->profiles[i];
if (depth != profile->depth ||
desc->nb_components != profile->nb_components)
continue;
if (desc->nb_components > 1 &&
(desc->log2_chroma_w != profile->log2_chroma_w ||
desc->log2_chroma_h != profile->log2_chroma_h))
continue;
if (avctx->profile != profile->av_profile &&
avctx->profile != FF_PROFILE_UNKNOWN)
continue;
#if VA_CHECK_VERSION(1, 0, 0)
profile_string = vaProfileStr(profile->va_profile);
#else
profile_string = "(no profile names)";
#endif
for (j = 0; j < n; j++) {
if (va_profiles[j] == profile->va_profile)
break;
}
if (j >= n) {
av_log(avctx, AV_LOG_VERBOSE, "Matching profile %d is "
"not supported by driver.\n", profile->va_profile);
continue;
}
ctx->profile = profile;
break;
}
if (!ctx->profile) {
av_log(avctx, AV_LOG_ERROR, "No usable encoding profile found.\n");
err = AVERROR(ENOSYS);
goto fail;
}
avctx->profile = profile->av_profile;
ctx->va_profile = profile->va_profile;
av_log(avctx, AV_LOG_VERBOSE, "Using VAAPI profile %s (%d).\n",
profile_string, ctx->va_profile);
n = vaMaxNumEntrypoints(ctx->hwctx->display);
va_entrypoints = av_malloc_array(n, sizeof(VAEntrypoint));
if (!va_entrypoints) {
err = AVERROR(ENOMEM);
goto fail;
}
vas = vaQueryConfigEntrypoints(ctx->hwctx->display, ctx->va_profile,
va_entrypoints, &n);
if (vas != VA_STATUS_SUCCESS) {
av_log(avctx, AV_LOG_ERROR, "Failed to query entrypoints for "
"profile %s (%d): %d (%s).\n", profile_string,
ctx->va_profile, vas, vaErrorStr(vas));
err = AVERROR_EXTERNAL;
goto fail;
}
for (i = 0; i < n; i++) {
for (j = 0; usable_entrypoints[j]; j++) {
if (va_entrypoints[i] == usable_entrypoints[j])
break;
}
if (usable_entrypoints[j])
break;
}
if (i >= n) {
av_log(avctx, AV_LOG_ERROR, "No usable encoding entrypoint found "
"for profile %s (%d).\n", profile_string, ctx->va_profile);
err = AVERROR(ENOSYS);
goto fail;
}
ctx->va_entrypoint = va_entrypoints[i];
#if VA_CHECK_VERSION(1, 0, 0)
entrypoint_string = vaEntrypointStr(ctx->va_entrypoint);
#else
entrypoint_string = "(no entrypoint names)";
#endif
av_log(avctx, AV_LOG_VERBOSE, "Using VAAPI entrypoint %s (%d).\n",
entrypoint_string, ctx->va_entrypoint);
for (i = 0; i < FF_ARRAY_ELEMS(vaapi_encode_rt_formats); i++) {
rt_format = &vaapi_encode_rt_formats[i];
if (rt_format->depth == depth &&
rt_format->nb_components == profile->nb_components &&
rt_format->log2_chroma_w == profile->log2_chroma_w &&
rt_format->log2_chroma_h == profile->log2_chroma_h)
break;
}
if (i >= FF_ARRAY_ELEMS(vaapi_encode_rt_formats)) {
av_log(avctx, AV_LOG_ERROR, "No usable render target format "
"found for profile %s (%d) entrypoint %s (%d).\n",
profile_string, ctx->va_profile,
entrypoint_string, ctx->va_entrypoint);
err = AVERROR(ENOSYS);
goto fail;
}
rt_format_attr = (VAConfigAttrib) { VAConfigAttribRTFormat };
vas = vaGetConfigAttributes(ctx->hwctx->display,
ctx->va_profile, ctx->va_entrypoint,
&rt_format_attr, 1);
if (vas != VA_STATUS_SUCCESS) {
av_log(avctx, AV_LOG_ERROR, "Failed to query RT format "
"config attribute: %d (%s).\n", vas, vaErrorStr(vas));
err = AVERROR_EXTERNAL;
goto fail;
}
if (rt_format_attr.value == VA_ATTRIB_NOT_SUPPORTED) {
av_log(avctx, AV_LOG_VERBOSE, "RT format config attribute not "
"supported by driver: assuming surface RT format %s "
"is valid.\n", rt_format->name);
} else if (!(rt_format_attr.value & rt_format->value)) {
av_log(avctx, AV_LOG_ERROR, "Surface RT format %s not supported "
"by driver for encoding profile %s (%d) entrypoint %s (%d).\n",
rt_format->name, profile_string, ctx->va_profile,
entrypoint_string, ctx->va_entrypoint);
err = AVERROR(ENOSYS);
goto fail;
} else {
av_log(avctx, AV_LOG_VERBOSE, "Using VAAPI render target "
"format %s (%#x).\n", rt_format->name, rt_format->value);
ctx->config_attributes[ctx->nb_config_attributes++] =
(VAConfigAttrib) {
.type = VAConfigAttribRTFormat,
.value = rt_format->value,
};
}
err = 0;
fail:
av_freep(&va_profiles);
av_freep(&va_entrypoints);
return err;
}
static av_cold int vaapi_encode_init_rate_control(AVCodecContext *avctx)
{
VAAPIEncodeContext *ctx = avctx->priv_data;
int64_t rc_bits_per_second;
int rc_target_percentage;
int rc_window_size;
int64_t hrd_buffer_size;
int64_t hrd_initial_buffer_fullness;
int fr_num, fr_den;
VAConfigAttrib rc_attr = { VAConfigAttribRateControl };
VAStatus vas;
vas = vaGetConfigAttributes(ctx->hwctx->display,
ctx->va_profile, ctx->va_entrypoint,
&rc_attr, 1);
if (vas != VA_STATUS_SUCCESS) {
av_log(avctx, AV_LOG_ERROR, "Failed to query rate control "
"config attribute: %d (%s).\n", vas, vaErrorStr(vas));
return AVERROR_EXTERNAL;
}
if (rc_attr.value == VA_ATTRIB_NOT_SUPPORTED) {
av_log(avctx, AV_LOG_VERBOSE, "Driver does not report any "
"supported rate control modes: assuming constant-quality.\n");
ctx->va_rc_mode = VA_RC_CQP;
return 0;
}
if (ctx->codec->flags & FLAG_CONSTANT_QUALITY_ONLY ||
avctx->flags & AV_CODEC_FLAG_QSCALE ||
avctx->bit_rate <= 0) {
if (rc_attr.value & VA_RC_CQP) {
av_log(avctx, AV_LOG_VERBOSE, "Using constant-quality mode.\n");
ctx->va_rc_mode = VA_RC_CQP;
if (avctx->bit_rate > 0 || avctx->rc_max_rate > 0) {
av_log(avctx, AV_LOG_WARNING, "Bitrate target parameters "
"ignored in constant-quality mode.\n");
}
return 0;
} else {
av_log(avctx, AV_LOG_ERROR, "Driver does not support "
"constant-quality mode (%#x).\n", rc_attr.value);
return AVERROR(EINVAL);
}
}
if (!(rc_attr.value & (VA_RC_CBR | VA_RC_VBR))) {
av_log(avctx, AV_LOG_ERROR, "Driver does not support any "
"bitrate-targetted rate control modes.\n");
return AVERROR(EINVAL);
}
if (avctx->rc_buffer_size)
hrd_buffer_size = avctx->rc_buffer_size;
else if (avctx->rc_max_rate > 0)
hrd_buffer_size = avctx->rc_max_rate;
else
hrd_buffer_size = avctx->bit_rate;
if (avctx->rc_initial_buffer_occupancy) {
if (avctx->rc_initial_buffer_occupancy > hrd_buffer_size) {
av_log(avctx, AV_LOG_ERROR, "Invalid RC buffer settings: "
"must have initial buffer size (%d) < "
"buffer size (%"PRId64").\n",
avctx->rc_initial_buffer_occupancy, hrd_buffer_size);
return AVERROR(EINVAL);
}
hrd_initial_buffer_fullness = avctx->rc_initial_buffer_occupancy;
} else {
hrd_initial_buffer_fullness = hrd_buffer_size * 3 / 4;
}
if (avctx->rc_max_rate && avctx->rc_max_rate < avctx->bit_rate) {
av_log(avctx, AV_LOG_ERROR, "Invalid bitrate settings: must have "
"bitrate (%"PRId64") <= maxrate (%"PRId64").\n",
avctx->bit_rate, avctx->rc_max_rate);
return AVERROR(EINVAL);
}
if (avctx->rc_max_rate > avctx->bit_rate) {
if (!(rc_attr.value & VA_RC_VBR)) {
av_log(avctx, AV_LOG_WARNING, "Driver does not support "
"VBR mode (%#x), using CBR mode instead.\n",
rc_attr.value);
ctx->va_rc_mode = VA_RC_CBR;
rc_bits_per_second = avctx->bit_rate;
rc_target_percentage = 100;
} else {
ctx->va_rc_mode = VA_RC_VBR;
rc_bits_per_second = avctx->rc_max_rate;
rc_target_percentage = (avctx->bit_rate * 100) /
avctx->rc_max_rate;
}
} else if (avctx->rc_max_rate == avctx->bit_rate) {
if (!(rc_attr.value & VA_RC_CBR)) {
av_log(avctx, AV_LOG_WARNING, "Driver does not support "
"CBR mode (%#x), using VBR mode instead.\n",
rc_attr.value);
ctx->va_rc_mode = VA_RC_VBR;
} else {
ctx->va_rc_mode = VA_RC_CBR;
}
rc_bits_per_second = avctx->bit_rate;
rc_target_percentage = 100;
} else {
if (rc_attr.value & VA_RC_VBR) {
ctx->va_rc_mode = VA_RC_VBR;
// We only have a target bitrate, but VAAPI requires that a
// maximum rate be supplied as well. Since the user has
// offered no particular constraint, arbitrarily pick a
// maximum rate of double the target rate.
rc_bits_per_second = 2 * avctx->bit_rate;
rc_target_percentage = 50;
} else {
ctx->va_rc_mode = VA_RC_CBR;
rc_bits_per_second = avctx->bit_rate;
rc_target_percentage = 100;
}
}
rc_window_size = (hrd_buffer_size * 1000) / rc_bits_per_second;
av_log(avctx, AV_LOG_VERBOSE, "RC mode: %s, %d%% of %"PRId64" bps "
"over %d ms.\n", ctx->va_rc_mode == VA_RC_VBR ? "VBR" : "CBR",
rc_target_percentage, rc_bits_per_second, rc_window_size);
av_log(avctx, AV_LOG_VERBOSE, "RC buffer: %"PRId64" bits, "
"initial fullness %"PRId64" bits.\n",
hrd_buffer_size, hrd_initial_buffer_fullness);
if (rc_bits_per_second > UINT32_MAX ||
hrd_buffer_size > UINT32_MAX ||
hrd_initial_buffer_fullness > UINT32_MAX) {
av_log(avctx, AV_LOG_ERROR, "RC parameters of 2^32 or "
"greater are not supported by VAAPI.\n");
return AVERROR(EINVAL);
}
ctx->va_bit_rate = rc_bits_per_second;
ctx->config_attributes[ctx->nb_config_attributes++] =
(VAConfigAttrib) {
.type = VAConfigAttribRateControl,
.value = ctx->va_rc_mode,
};
ctx->rc_params.misc.type = VAEncMiscParameterTypeRateControl;
ctx->rc_params.rc = (VAEncMiscParameterRateControl) {
.bits_per_second = rc_bits_per_second,
.target_percentage = rc_target_percentage,
.window_size = rc_window_size,
.initial_qp = 0,
.min_qp = (avctx->qmin > 0 ? avctx->qmin : 0),
.basic_unit_size = 0,
#if VA_CHECK_VERSION(1, 1, 0)
.max_qp = (avctx->qmax > 0 ? avctx->qmax : 0),
#endif
};
vaapi_encode_add_global_param(avctx, &ctx->rc_params.misc,
sizeof(ctx->rc_params));
ctx->hrd_params.misc.type = VAEncMiscParameterTypeHRD;
ctx->hrd_params.hrd = (VAEncMiscParameterHRD) {
.initial_buffer_fullness = hrd_initial_buffer_fullness,
.buffer_size = hrd_buffer_size,
};
vaapi_encode_add_global_param(avctx, &ctx->hrd_params.misc,
sizeof(ctx->hrd_params));
if (avctx->framerate.num > 0 && avctx->framerate.den > 0)
av_reduce(&fr_num, &fr_den,
avctx->framerate.num, avctx->framerate.den, 65535);
else
av_reduce(&fr_num, &fr_den,
avctx->time_base.den, avctx->time_base.num, 65535);
ctx->fr_params.misc.type = VAEncMiscParameterTypeFrameRate;
ctx->fr_params.fr.framerate = (unsigned int)fr_den << 16 | fr_num;
#if VA_CHECK_VERSION(0, 40, 0)
vaapi_encode_add_global_param(avctx, &ctx->fr_params.misc,
sizeof(ctx->fr_params));
#endif
return 0;
}
static av_cold int vaapi_encode_init_gop_structure(AVCodecContext *avctx)
{
VAAPIEncodeContext *ctx = avctx->priv_data;
VAStatus vas;
VAConfigAttrib attr = { VAConfigAttribEncMaxRefFrames };
uint32_t ref_l0, ref_l1;
vas = vaGetConfigAttributes(ctx->hwctx->display,
ctx->va_profile,
ctx->va_entrypoint,
&attr, 1);
if (vas != VA_STATUS_SUCCESS) {
av_log(avctx, AV_LOG_ERROR, "Failed to query reference frames "
"attribute: %d (%s).\n", vas, vaErrorStr(vas));
return AVERROR_EXTERNAL;
}
if (attr.value == VA_ATTRIB_NOT_SUPPORTED) {
ref_l0 = ref_l1 = 0;
} else {
ref_l0 = attr.value & 0xffff;
ref_l1 = attr.value >> 16 & 0xffff;
}
if (avctx->gop_size <= 1) {
av_log(avctx, AV_LOG_VERBOSE, "Using intra frames only.\n");
ctx->gop_size = 1;
} else if (ref_l0 < 1) {
av_log(avctx, AV_LOG_ERROR, "Driver does not support any "
"reference frames.\n");
return AVERROR(EINVAL);
} else if (ref_l1 < 1 || avctx->max_b_frames < 1) {
av_log(avctx, AV_LOG_VERBOSE, "Using intra and P-frames "
"(supported references: %d / %d).\n", ref_l0, ref_l1);
ctx->gop_size = avctx->gop_size;
ctx->p_per_i = INT_MAX;
ctx->b_per_p = 0;
} else {
av_log(avctx, AV_LOG_VERBOSE, "Using intra, P- and B-frames "
"(supported references: %d / %d).\n", ref_l0, ref_l1);
ctx->gop_size = avctx->gop_size;
ctx->p_per_i = INT_MAX;
ctx->b_per_p = avctx->max_b_frames;
}
return 0;
}
static av_cold int vaapi_encode_init_slice_structure(AVCodecContext *avctx)
{
VAAPIEncodeContext *ctx = avctx->priv_data;
VAConfigAttrib attr[2] = { { VAConfigAttribEncMaxSlices },
{ VAConfigAttribEncSliceStructure } };
VAStatus vas;
uint32_t max_slices, slice_structure;
int req_slices;
if (!(ctx->codec->flags & FLAG_SLICE_CONTROL)) {
if (avctx->slices > 0) {
av_log(avctx, AV_LOG_WARNING, "Multiple slices were requested "
"but this codec does not support controlling slices.\n");
}
return 0;
}
ctx->slice_block_rows = (avctx->height + ctx->slice_block_height - 1) /
ctx->slice_block_height;
ctx->slice_block_cols = (avctx->width + ctx->slice_block_width - 1) /
ctx->slice_block_width;
if (avctx->slices <= 1) {
ctx->nb_slices = 1;
ctx->slice_size = ctx->slice_block_rows;
return 0;
}
vas = vaGetConfigAttributes(ctx->hwctx->display,
ctx->va_profile,
ctx->va_entrypoint,
attr, FF_ARRAY_ELEMS(attr));
if (vas != VA_STATUS_SUCCESS) {
av_log(avctx, AV_LOG_ERROR, "Failed to query slice "
"attributes: %d (%s).\n", vas, vaErrorStr(vas));
return AVERROR_EXTERNAL;
}
max_slices = attr[0].value;
slice_structure = attr[1].value;
if (max_slices == VA_ATTRIB_NOT_SUPPORTED ||
slice_structure == VA_ATTRIB_NOT_SUPPORTED) {
av_log(avctx, AV_LOG_ERROR, "Driver does not support encoding "
"pictures as multiple slices.\n.");
return AVERROR(EINVAL);
}
// For fixed-size slices currently we only support whole rows, making
// rectangular slices. This could be extended to arbitrary runs of
// blocks, but since slices tend to be a conformance requirement and
// most cases (such as broadcast or bluray) want rectangular slices
// only it would need to be gated behind another option.
if (avctx->slices > ctx->slice_block_rows) {
av_log(avctx, AV_LOG_WARNING, "Not enough rows to use "
"configured number of slices (%d < %d); using "
"maximum.\n", ctx->slice_block_rows, avctx->slices);
req_slices = ctx->slice_block_rows;
} else {
req_slices = avctx->slices;
}
if (slice_structure & VA_ENC_SLICE_STRUCTURE_ARBITRARY_ROWS ||
slice_structure & VA_ENC_SLICE_STRUCTURE_ARBITRARY_MACROBLOCKS) {
ctx->nb_slices = req_slices;
ctx->slice_size = ctx->slice_block_rows / ctx->nb_slices;
} else if (slice_structure & VA_ENC_SLICE_STRUCTURE_POWER_OF_TWO_ROWS) {
int k;
for (k = 1;; k *= 2) {
if (2 * k * (req_slices - 1) + 1 >= ctx->slice_block_rows)
break;
}
ctx->nb_slices = (ctx->slice_block_rows + k - 1) / k;
ctx->slice_size = k;
#if VA_CHECK_VERSION(1, 0, 0)
} else if (slice_structure & VA_ENC_SLICE_STRUCTURE_EQUAL_ROWS) {
ctx->nb_slices = ctx->slice_block_rows;
ctx->slice_size = 1;
#endif
} else {
av_log(avctx, AV_LOG_ERROR, "Driver does not support any usable "
"slice structure modes (%#x).\n", slice_structure);
return AVERROR(EINVAL);
}
if (ctx->nb_slices > avctx->slices) {
av_log(avctx, AV_LOG_WARNING, "Slice count rounded up to "
"%d (from %d) due to driver constraints on slice "
"structure.\n", ctx->nb_slices, avctx->slices);
}
if (ctx->nb_slices > max_slices) {
av_log(avctx, AV_LOG_ERROR, "Driver does not support "
"encoding with %d slices (max %"PRIu32").\n",
ctx->nb_slices, max_slices);
return AVERROR(EINVAL);
}
av_log(avctx, AV_LOG_VERBOSE, "Encoding pictures with %d slices "
"(default size %d block rows).\n",
ctx->nb_slices, ctx->slice_size);
return 0;
}
static av_cold int vaapi_encode_init_packed_headers(AVCodecContext *avctx)
{
VAAPIEncodeContext *ctx = avctx->priv_data;
VAStatus vas;
VAConfigAttrib attr = { VAConfigAttribEncPackedHeaders };
vas = vaGetConfigAttributes(ctx->hwctx->display,
ctx->va_profile,
ctx->va_entrypoint,
&attr, 1);
if (vas != VA_STATUS_SUCCESS) {
av_log(avctx, AV_LOG_ERROR, "Failed to query packed headers "
"attribute: %d (%s).\n", vas, vaErrorStr(vas));
return AVERROR_EXTERNAL;
}
if (attr.value == VA_ATTRIB_NOT_SUPPORTED) {
if (ctx->desired_packed_headers) {
av_log(avctx, AV_LOG_WARNING, "Driver does not support any "
"packed headers (wanted %#x).\n",
ctx->desired_packed_headers);
} else {
av_log(avctx, AV_LOG_VERBOSE, "Driver does not support any "
"packed headers (none wanted).\n");
}
ctx->va_packed_headers = 0;
} else {
if (ctx->desired_packed_headers & ~attr.value) {
av_log(avctx, AV_LOG_WARNING, "Driver does not support some "
"wanted packed headers (wanted %#x, found %#x).\n",
ctx->desired_packed_headers, attr.value);
} else {
av_log(avctx, AV_LOG_VERBOSE, "All wanted packed headers "
"available (wanted %#x, found %#x).\n",
ctx->desired_packed_headers, attr.value);
}
ctx->va_packed_headers = ctx->desired_packed_headers & attr.value;
}
if (ctx->va_packed_headers) {
ctx->config_attributes[ctx->nb_config_attributes++] =
(VAConfigAttrib) {
.type = VAConfigAttribEncPackedHeaders,
.value = ctx->va_packed_headers,
};
}
if ( (ctx->desired_packed_headers & VA_ENC_PACKED_HEADER_SEQUENCE) &&
!(ctx->va_packed_headers & VA_ENC_PACKED_HEADER_SEQUENCE) &&
(avctx->flags & AV_CODEC_FLAG_GLOBAL_HEADER)) {
av_log(avctx, AV_LOG_WARNING, "Driver does not support packed "
"sequence headers, but a global header is requested.\n");
av_log(avctx, AV_LOG_WARNING, "No global header will be written: "
"this may result in a stream which is not usable for some "
"purposes (e.g. not muxable to some containers).\n");
}
return 0;
}
static av_cold int vaapi_encode_init_quality(AVCodecContext *avctx)
{
#if VA_CHECK_VERSION(0, 36, 0)
VAAPIEncodeContext *ctx = avctx->priv_data;
VAStatus vas;
VAConfigAttrib attr = { VAConfigAttribEncQualityRange };
int quality = avctx->compression_level;
vas = vaGetConfigAttributes(ctx->hwctx->display,
ctx->va_profile,
ctx->va_entrypoint,
&attr, 1);
if (vas != VA_STATUS_SUCCESS) {
av_log(avctx, AV_LOG_ERROR, "Failed to query quality "
"config attribute: %d (%s).\n", vas, vaErrorStr(vas));
return AVERROR_EXTERNAL;
}
if (attr.value == VA_ATTRIB_NOT_SUPPORTED) {
if (quality != 0) {
av_log(avctx, AV_LOG_WARNING, "Quality attribute is not "
"supported: will use default quality level.\n");
}
} else {
if (quality > attr.value) {
av_log(avctx, AV_LOG_WARNING, "Invalid quality level: "
"valid range is 0-%d, using %d.\n",
attr.value, attr.value);
quality = attr.value;
}
ctx->quality_params.misc.type = VAEncMiscParameterTypeQualityLevel;
ctx->quality_params.quality.quality_level = quality;
vaapi_encode_add_global_param(avctx, &ctx->quality_params.misc,
sizeof(ctx->quality_params));
}
#else
av_log(avctx, AV_LOG_WARNING, "The encode quality option is "
"not supported with this VAAPI version.\n");
#endif
return 0;
}
static void vaapi_encode_free_output_buffer(void *opaque,
uint8_t *data)
{
AVCodecContext *avctx = opaque;
VAAPIEncodeContext *ctx = avctx->priv_data;
VABufferID buffer_id;
buffer_id = (VABufferID)(uintptr_t)data;
vaDestroyBuffer(ctx->hwctx->display, buffer_id);
av_log(avctx, AV_LOG_DEBUG, "Freed output buffer %#x\n", buffer_id);
}
static AVBufferRef *vaapi_encode_alloc_output_buffer(void *opaque,
int size)
{
AVCodecContext *avctx = opaque;
VAAPIEncodeContext *ctx = avctx->priv_data;
VABufferID buffer_id;
VAStatus vas;
AVBufferRef *ref;
// The output buffer size is fixed, so it needs to be large enough
// to hold the largest possible compressed frame. We assume here
// that the uncompressed frame plus some header data is an upper
// bound on that.
vas = vaCreateBuffer(ctx->hwctx->display, ctx->va_context,
VAEncCodedBufferType,
3 * ctx->surface_width * ctx->surface_height +
(1 << 16), 1, 0, &buffer_id);
if (vas != VA_STATUS_SUCCESS) {
av_log(avctx, AV_LOG_ERROR, "Failed to create bitstream "
"output buffer: %d (%s).\n", vas, vaErrorStr(vas));
return NULL;
}
av_log(avctx, AV_LOG_DEBUG, "Allocated output buffer %#x\n", buffer_id);
ref = av_buffer_create((uint8_t*)(uintptr_t)buffer_id,
sizeof(buffer_id),
&vaapi_encode_free_output_buffer,
avctx, AV_BUFFER_FLAG_READONLY);
if (!ref) {
vaDestroyBuffer(ctx->hwctx->display, buffer_id);
return NULL;
}
return ref;
}
static av_cold int vaapi_encode_create_recon_frames(AVCodecContext *avctx)
{
VAAPIEncodeContext *ctx = avctx->priv_data;
AVVAAPIHWConfig *hwconfig = NULL;
AVHWFramesConstraints *constraints = NULL;
enum AVPixelFormat recon_format;
int err, i;
hwconfig = av_hwdevice_hwconfig_alloc(ctx->device_ref);
if (!hwconfig) {
err = AVERROR(ENOMEM);
goto fail;
}
hwconfig->config_id = ctx->va_config;
constraints = av_hwdevice_get_hwframe_constraints(ctx->device_ref,
hwconfig);
if (!constraints) {
err = AVERROR(ENOMEM);
goto fail;
}
// Probably we can use the input surface format as the surface format
// of the reconstructed frames. If not, we just pick the first (only?)
// format in the valid list and hope that it all works.
recon_format = AV_PIX_FMT_NONE;
if (constraints->valid_sw_formats) {
for (i = 0; constraints->valid_sw_formats[i] != AV_PIX_FMT_NONE; i++) {
if (ctx->input_frames->sw_format ==
constraints->valid_sw_formats[i]) {
recon_format = ctx->input_frames->sw_format;
break;
}
}
if (recon_format == AV_PIX_FMT_NONE) {
// No match. Just use the first in the supported list and
// hope for the best.
recon_format = constraints->valid_sw_formats[0];
}
} else {
// No idea what to use; copy input format.
recon_format = ctx->input_frames->sw_format;
}
av_log(avctx, AV_LOG_DEBUG, "Using %s as format of "
"reconstructed frames.\n", av_get_pix_fmt_name(recon_format));
if (ctx->surface_width < constraints->min_width ||
ctx->surface_height < constraints->min_height ||
ctx->surface_width > constraints->max_width ||
ctx->surface_height > constraints->max_height) {
av_log(avctx, AV_LOG_ERROR, "Hardware does not support encoding at "
"size %dx%d (constraints: width %d-%d height %d-%d).\n",
ctx->surface_width, ctx->surface_height,
constraints->min_width, constraints->max_width,
constraints->min_height, constraints->max_height);
err = AVERROR(EINVAL);
goto fail;
}
av_freep(&hwconfig);
av_hwframe_constraints_free(&constraints);
ctx->recon_frames_ref = av_hwframe_ctx_alloc(ctx->device_ref);
if (!ctx->recon_frames_ref) {
err = AVERROR(ENOMEM);
goto fail;
}
ctx->recon_frames = (AVHWFramesContext*)ctx->recon_frames_ref->data;
ctx->recon_frames->format = AV_PIX_FMT_VAAPI;
ctx->recon_frames->sw_format = recon_format;
ctx->recon_frames->width = ctx->surface_width;
ctx->recon_frames->height = ctx->surface_height;
// At most three IDR/I/P frames and two runs of B frames can be in
// flight at any one time.
ctx->recon_frames->initial_pool_size = 3 + 2 * ctx->b_per_p;
err = av_hwframe_ctx_init(ctx->recon_frames_ref);
if (err < 0) {
av_log(avctx, AV_LOG_ERROR, "Failed to initialise reconstructed "
"frame context: %d.\n", err);
goto fail;
}
err = 0;
fail:
av_freep(&hwconfig);
av_hwframe_constraints_free(&constraints);
return err;
}
av_cold int ff_vaapi_encode_init(AVCodecContext *avctx)
{
VAAPIEncodeContext *ctx = avctx->priv_data;
AVVAAPIFramesContext *recon_hwctx = NULL;
VAStatus vas;
int err;
if (!avctx->hw_frames_ctx) {
av_log(avctx, AV_LOG_ERROR, "A hardware frames reference is "
"required to associate the encoding device.\n");
return AVERROR(EINVAL);
}
ctx->va_config = VA_INVALID_ID;
ctx->va_context = VA_INVALID_ID;
ctx->input_frames_ref = av_buffer_ref(avctx->hw_frames_ctx);
if (!ctx->input_frames_ref) {
err = AVERROR(ENOMEM);
goto fail;
}
ctx->input_frames = (AVHWFramesContext*)ctx->input_frames_ref->data;
ctx->device_ref = av_buffer_ref(ctx->input_frames->device_ref);
if (!ctx->device_ref) {
err = AVERROR(ENOMEM);
goto fail;
}
ctx->device = (AVHWDeviceContext*)ctx->device_ref->data;
ctx->hwctx = ctx->device->hwctx;
err = vaapi_encode_profile_entrypoint(avctx);
if (err < 0)
goto fail;
err = vaapi_encode_init_rate_control(avctx);
if (err < 0)
goto fail;
err = vaapi_encode_init_gop_structure(avctx);
if (err < 0)
goto fail;
err = vaapi_encode_init_slice_structure(avctx);
if (err < 0)
goto fail;
err = vaapi_encode_init_packed_headers(avctx);
if (err < 0)
goto fail;
if (avctx->compression_level >= 0) {
err = vaapi_encode_init_quality(avctx);
if (err < 0)
goto fail;
}
vas = vaCreateConfig(ctx->hwctx->display,
ctx->va_profile, ctx->va_entrypoint,
ctx->config_attributes, ctx->nb_config_attributes,
&ctx->va_config);
if (vas != VA_STATUS_SUCCESS) {
av_log(avctx, AV_LOG_ERROR, "Failed to create encode pipeline "
"configuration: %d (%s).\n", vas, vaErrorStr(vas));
err = AVERROR(EIO);
goto fail;
}
err = vaapi_encode_create_recon_frames(avctx);
if (err < 0)
goto fail;
recon_hwctx = ctx->recon_frames->hwctx;
vas = vaCreateContext(ctx->hwctx->display, ctx->va_config,
ctx->surface_width, ctx->surface_height,
VA_PROGRESSIVE,
recon_hwctx->surface_ids,
recon_hwctx->nb_surfaces,
&ctx->va_context);
if (vas != VA_STATUS_SUCCESS) {
av_log(avctx, AV_LOG_ERROR, "Failed to create encode pipeline "
"context: %d (%s).\n", vas, vaErrorStr(vas));
err = AVERROR(EIO);
goto fail;
}
ctx->output_buffer_pool =
av_buffer_pool_init2(sizeof(VABufferID), avctx,
&vaapi_encode_alloc_output_buffer, NULL);
if (!ctx->output_buffer_pool) {
err = AVERROR(ENOMEM);
goto fail;
}
if (ctx->codec->configure) {
err = ctx->codec->configure(avctx);
if (err < 0)
goto fail;
}
ctx->input_order = 0;
ctx->output_delay = ctx->b_per_p;
ctx->decode_delay = 1;
ctx->output_order = - ctx->output_delay - 1;
if (ctx->codec->sequence_params_size > 0) {
ctx->codec_sequence_params =
av_mallocz(ctx->codec->sequence_params_size);
if (!ctx->codec_sequence_params) {
err = AVERROR(ENOMEM);
goto fail;
}
}
if (ctx->codec->picture_params_size > 0) {
ctx->codec_picture_params =
av_mallocz(ctx->codec->picture_params_size);
if (!ctx->codec_picture_params) {
err = AVERROR(ENOMEM);
goto fail;
}
}
if (ctx->codec->init_sequence_params) {
err = ctx->codec->init_sequence_params(avctx);
if (err < 0) {
av_log(avctx, AV_LOG_ERROR, "Codec sequence initialisation "
"failed: %d.\n", err);
goto fail;
}
}
// This should be configurable somehow. (Needs testing on a machine
// where it actually overlaps properly, though.)
ctx->issue_mode = ISSUE_MODE_MAXIMISE_THROUGHPUT;
if (ctx->va_packed_headers & VA_ENC_PACKED_HEADER_SEQUENCE &&
ctx->codec->write_sequence_header &&
avctx->flags & AV_CODEC_FLAG_GLOBAL_HEADER) {
char data[MAX_PARAM_BUFFER_SIZE];
size_t bit_len = 8 * sizeof(data);
err = ctx->codec->write_sequence_header(avctx, data, &bit_len);
if (err < 0) {
av_log(avctx, AV_LOG_ERROR, "Failed to write sequence header "
"for extradata: %d.\n", err);
goto fail;
} else {
avctx->extradata_size = (bit_len + 7) / 8;
avctx->extradata = av_mallocz(avctx->extradata_size +
AV_INPUT_BUFFER_PADDING_SIZE);
if (!avctx->extradata) {
err = AVERROR(ENOMEM);
goto fail;
}
memcpy(avctx->extradata, data, avctx->extradata_size);
}
}
return 0;
fail:
ff_vaapi_encode_close(avctx);
return err;
}
av_cold int ff_vaapi_encode_close(AVCodecContext *avctx)
{
VAAPIEncodeContext *ctx = avctx->priv_data;
VAAPIEncodePicture *pic, *next;
for (pic = ctx->pic_start; pic; pic = next) {
next = pic->next;
vaapi_encode_free(avctx, pic);
}
av_buffer_pool_uninit(&ctx->output_buffer_pool);
if (ctx->va_context != VA_INVALID_ID) {
vaDestroyContext(ctx->hwctx->display, ctx->va_context);
ctx->va_context = VA_INVALID_ID;
}
if (ctx->va_config != VA_INVALID_ID) {
vaDestroyConfig(ctx->hwctx->display, ctx->va_config);
ctx->va_config = VA_INVALID_ID;
}
av_freep(&ctx->codec_sequence_params);
av_freep(&ctx->codec_picture_params);
av_buffer_unref(&ctx->recon_frames_ref);
av_buffer_unref(&ctx->input_frames_ref);
av_buffer_unref(&ctx->device_ref);
return 0;
}
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