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gstreamer/sys/va/gstvah264dec.c

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/* GStreamer
* Copyright (C) 2020 Igalia, S.L.
* Author: Víctor Jáquez <vjaquez@igalia.com>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library 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
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public
* License along with this library; if not, write to the0
* Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
* Boston, MA 02110-1301, USA.
*/
/**
* SECTION:element-vah264dec
* @title: vah264dec
* @short_description: A VA-API based H264 video decoder
*
* vah264dec decodes H264 bitstreams to VA surfaces using the
* installed and chosen [VA-API](https://01.org/linuxmedia/vaapi)
* driver.
*
* The decoding surfaces can be mapped onto main memory as video
* frames.
*
* ## Example launch line
* ```
* gst-launch-1.0 filesrc location=big_buck_bunny.mov ! parsebin ! vah264dec ! autovideosink
* ```
*
* Since: 1.18
*
*/
/* ToDo:
*
* + mutiview and stereo profiles
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include "gstvah264dec.h"
#include "gstvabasedec.h"
GST_DEBUG_CATEGORY_STATIC (gst_va_h264dec_debug);
#ifndef GST_DISABLE_GST_DEBUG
#define GST_CAT_DEFAULT gst_va_h264dec_debug
#else
#define GST_CAT_DEFAULT NULL
#endif
#define GST_VA_H264_DEC(obj) ((GstVaH264Dec *) obj)
#define GST_VA_H264_DEC_GET_CLASS(obj) (G_TYPE_INSTANCE_GET_CLASS ((obj), G_TYPE_FROM_INSTANCE (obj), GstVaH264DecClass))
#define GST_VA_H264_DEC_CLASS(klass) ((GstVaH264DecClass *) klass)
typedef struct _GstVaH264Dec GstVaH264Dec;
typedef struct _GstVaH264DecClass GstVaH264DecClass;
struct _GstVaH264DecClass
{
GstVaBaseDecClass parent_class;
};
struct _GstVaH264Dec
{
GstVaBaseDec parent;
GstFlowReturn last_ret;
gint coded_width;
gint coded_height;
gint dpb_size;
/* Used to fill VAPictureParameterBufferH264.ReferenceFrames */
GArray *ref_list;
gboolean need_negotiation;
gboolean interlaced;
};
/* *INDENT-OFF* */
static const gchar *src_caps_str =
GST_VIDEO_CAPS_MAKE_WITH_FEATURES (GST_CAPS_FEATURE_MEMORY_VA,
"{ NV12, P010_10LE }") " ;"
GST_VIDEO_CAPS_MAKE ("{ NV12, P010_10LE }");
/* *INDENT-ON* */
static const gchar *sink_caps_str = "video/x-h264";
static gboolean
gst_va_h264_dec_end_picture (GstH264Decoder * decoder, GstH264Picture * picture)
{
GstVaBaseDec *base = GST_VA_BASE_DEC (decoder);
GstVaDecodePicture *va_pic;
GST_LOG_OBJECT (base, "end picture %p, (poc %d)",
picture, picture->pic_order_cnt);
va_pic = gst_h264_picture_get_user_data (picture);
return gst_va_decoder_decode (base->decoder, va_pic);
}
static GstFlowReturn
gst_va_h264_dec_output_picture (GstH264Decoder * decoder,
GstVideoCodecFrame * frame, GstH264Picture * picture)
{
GstVaBaseDec *base = GST_VA_BASE_DEC (decoder);
GstVaH264Dec *self = GST_VA_H264_DEC (decoder);
GST_LOG_OBJECT (self,
"Outputting picture %p (poc %d)", picture, picture->pic_order_cnt);
if (self->last_ret != GST_FLOW_OK) {
gst_h264_picture_unref (picture);
gst_video_decoder_drop_frame (GST_VIDEO_DECODER (self), frame);
return self->last_ret;
}
if (base->copy_frames)
gst_va_base_dec_copy_output_buffer (base, frame);
if (picture->buffer_flags != 0) {
gboolean interlaced =
(picture->buffer_flags & GST_VIDEO_BUFFER_FLAG_INTERLACED) != 0;
gboolean tff = (picture->buffer_flags & GST_VIDEO_BUFFER_FLAG_TFF) != 0;
GST_TRACE_OBJECT (self,
"apply buffer flags 0x%x (interlaced %d, top-field-first %d)",
picture->buffer_flags, interlaced, tff);
GST_BUFFER_FLAG_SET (frame->output_buffer, picture->buffer_flags);
}
gst_h264_picture_unref (picture);
return gst_video_decoder_finish_frame (GST_VIDEO_DECODER (self), frame);
}
static void
_init_vaapi_pic (VAPictureH264 * va_picture)
{
va_picture->picture_id = VA_INVALID_ID;
va_picture->frame_idx = 0;
va_picture->flags = VA_PICTURE_H264_INVALID;
va_picture->TopFieldOrderCnt = 0;
va_picture->BottomFieldOrderCnt = 0;
}
static void
_fill_vaapi_pic (VAPictureH264 * va_picture, GstH264Picture * picture,
gboolean merge_other_field)
{
GstVaDecodePicture *va_pic;
va_pic = gst_h264_picture_get_user_data (picture);
if (!va_pic) {
_init_vaapi_pic (va_picture);
return;
}
va_picture->picture_id = gst_va_decode_picture_get_surface (va_pic);
va_picture->flags = 0;
if (GST_H264_PICTURE_IS_LONG_TERM_REF (picture)) {
va_picture->flags |= VA_PICTURE_H264_LONG_TERM_REFERENCE;
va_picture->frame_idx = picture->long_term_frame_idx;
} else {
if (GST_H264_PICTURE_IS_SHORT_TERM_REF (picture))
va_picture->flags |= VA_PICTURE_H264_SHORT_TERM_REFERENCE;
va_picture->frame_idx = picture->frame_num;
}
switch (picture->field) {
case GST_H264_PICTURE_FIELD_FRAME:
va_picture->TopFieldOrderCnt = picture->top_field_order_cnt;
va_picture->BottomFieldOrderCnt = picture->bottom_field_order_cnt;
break;
case GST_H264_PICTURE_FIELD_TOP_FIELD:
if (merge_other_field && picture->other_field) {
va_picture->BottomFieldOrderCnt =
picture->other_field->bottom_field_order_cnt;
} else {
va_picture->flags |= VA_PICTURE_H264_TOP_FIELD;
va_picture->BottomFieldOrderCnt = 0;
}
va_picture->TopFieldOrderCnt = picture->top_field_order_cnt;
break;
case GST_H264_PICTURE_FIELD_BOTTOM_FIELD:
if (merge_other_field && picture->other_field) {
va_picture->TopFieldOrderCnt =
picture->other_field->top_field_order_cnt;
} else {
va_picture->flags |= VA_PICTURE_H264_BOTTOM_FIELD;
va_picture->TopFieldOrderCnt = 0;
}
va_picture->BottomFieldOrderCnt = picture->bottom_field_order_cnt;
break;
default:
va_picture->TopFieldOrderCnt = 0;
va_picture->BottomFieldOrderCnt = 0;
break;
}
}
/* fill the VA API reference picture lists from the GstCodec reference
* picture list */
static void
_fill_ref_pic_list (VAPictureH264 va_reflist[32], GArray * reflist,
GstH264Picture * current_picture)
{
guint i;
for (i = 0; i < reflist->len; i++) {
GstH264Picture *picture = g_array_index (reflist, GstH264Picture *, i);
if (picture) {
_fill_vaapi_pic (&va_reflist[i], picture,
GST_H264_PICTURE_IS_FRAME (current_picture));
} else {
/* list might include null picture if reference picture was missing */
_init_vaapi_pic (&va_reflist[i]);
}
}
for (; i < 32; i++)
_init_vaapi_pic (&va_reflist[i]);
}
static void
_fill_pred_weight_table (GstH264SliceHdr * header,
VASliceParameterBufferH264 * slice_param)
{
GstH264PPS *pps;
GstH264SPS *sps;
guint num_weight_tables = 0;
gint i, j;
pps = header->pps;
sps = pps->sequence;
if (pps->weighted_pred_flag
&& (GST_H264_IS_P_SLICE (header) || GST_H264_IS_SP_SLICE (header)))
num_weight_tables = 1;
else if (pps->weighted_bipred_idc == 1 && GST_H264_IS_B_SLICE (header))
num_weight_tables = 2;
if (num_weight_tables == 0)
return;
slice_param->luma_log2_weight_denom =
header->pred_weight_table.luma_log2_weight_denom;
slice_param->chroma_log2_weight_denom =
header->pred_weight_table.chroma_log2_weight_denom;
/* VA API also wants the inferred (default) values, not only what is
* available in the bitstream (7.4.3.2). */
slice_param->luma_weight_l0_flag = 1;
for (i = 0; i <= slice_param->num_ref_idx_l0_active_minus1; i++) {
slice_param->luma_weight_l0[i] =
header->pred_weight_table.luma_weight_l0[i];
slice_param->luma_offset_l0[i] =
header->pred_weight_table.luma_offset_l0[i];
}
slice_param->chroma_weight_l0_flag = sps->chroma_array_type != 0;
if (slice_param->chroma_weight_l0_flag) {
for (i = 0; i <= slice_param->num_ref_idx_l0_active_minus1; i++) {
for (j = 0; j < 2; j++) {
slice_param->chroma_weight_l0[i][j] =
header->pred_weight_table.chroma_weight_l0[i][j];
slice_param->chroma_offset_l0[i][j] =
header->pred_weight_table.chroma_offset_l0[i][j];
}
}
}
if (num_weight_tables == 1)
return;
slice_param->luma_weight_l1_flag = 1;
for (i = 0; i <= slice_param->num_ref_idx_l1_active_minus1; i++) {
slice_param->luma_weight_l1[i] =
header->pred_weight_table.luma_weight_l1[i];
slice_param->luma_offset_l1[i] =
header->pred_weight_table.luma_offset_l1[i];
}
slice_param->chroma_weight_l1_flag = sps->chroma_array_type != 0;
if (slice_param->chroma_weight_l1_flag) {
for (i = 0; i <= slice_param->num_ref_idx_l1_active_minus1; i++) {
for (j = 0; j < 2; j++) {
slice_param->chroma_weight_l1[i][j] =
header->pred_weight_table.chroma_weight_l1[i][j];
slice_param->chroma_offset_l1[i][j] =
header->pred_weight_table.chroma_offset_l1[i][j];
}
}
}
}
static inline guint
_get_slice_data_bit_offset (GstH264SliceHdr * header, guint nal_header_bytes)
{
guint epb_count;
epb_count = header->n_emulation_prevention_bytes;
return 8 * nal_header_bytes + header->header_size - epb_count * 8;
}
static gboolean
gst_va_h264_dec_decode_slice (GstH264Decoder * decoder,
GstH264Picture * picture, GstH264Slice * slice, GArray * ref_pic_list0,
GArray * ref_pic_list1)
{
GstH264SliceHdr *header = &slice->header;
GstH264NalUnit *nalu = &slice->nalu;
GstVaBaseDec *base = GST_VA_BASE_DEC (decoder);
GstVaDecodePicture *va_pic;
VASliceParameterBufferH264 slice_param;
/* *INDENT-OFF* */
slice_param = (VASliceParameterBufferH264) {
.slice_data_size = nalu->size,
.slice_data_offset = 0,
.slice_data_flag = VA_SLICE_DATA_FLAG_ALL,
.slice_data_bit_offset =
_get_slice_data_bit_offset (header, nalu->header_bytes),
.first_mb_in_slice = header->first_mb_in_slice,
.slice_type = header->type % 5,
.direct_spatial_mv_pred_flag = header->direct_spatial_mv_pred_flag,
.cabac_init_idc = header->cabac_init_idc,
.slice_qp_delta = header->slice_qp_delta,
.disable_deblocking_filter_idc = header->disable_deblocking_filter_idc,
.slice_alpha_c0_offset_div2 = header->slice_alpha_c0_offset_div2,
.slice_beta_offset_div2 = header->slice_beta_offset_div2,
.num_ref_idx_l0_active_minus1 = header->num_ref_idx_l0_active_minus1,
.num_ref_idx_l1_active_minus1 = header->num_ref_idx_l1_active_minus1,
};
/* *INDENT-ON* */
_fill_ref_pic_list (slice_param.RefPicList0, ref_pic_list0, picture);
_fill_ref_pic_list (slice_param.RefPicList1, ref_pic_list1, picture);
_fill_pred_weight_table (header, &slice_param);
va_pic = gst_h264_picture_get_user_data (picture);
return gst_va_decoder_add_slice_buffer (base->decoder, va_pic, &slice_param,
sizeof (slice_param), slice->nalu.data + slice->nalu.offset,
slice->nalu.size);
}
static gboolean
gst_va_h264_dec_start_picture (GstH264Decoder * decoder,
GstH264Picture * picture, GstH264Slice * slice, GstH264Dpb * dpb)
{
GstVaH264Dec *self = GST_VA_H264_DEC (decoder);
GstH264PPS *pps;
GstH264SPS *sps;
GstVaBaseDec *base = GST_VA_BASE_DEC (decoder);
GstVaDecodePicture *va_pic;
VAIQMatrixBufferH264 iq_matrix = { 0, };
VAPictureParameterBufferH264 pic_param;
guint i, n;
GArray *ref_list = self->ref_list;
va_pic = gst_h264_picture_get_user_data (picture);
pps = slice->header.pps;
sps = pps->sequence;
/* *INDENT-OFF* */
pic_param = (VAPictureParameterBufferH264) {
/* .CurrPic */
/* .ReferenceFrames */
.picture_width_in_mbs_minus1 = sps->pic_width_in_mbs_minus1,
.picture_height_in_mbs_minus1 =
((sps->pic_height_in_map_units_minus1 + 1) <<
!sps->frame_mbs_only_flag) -1,
.bit_depth_luma_minus8 = sps->bit_depth_luma_minus8,
.bit_depth_chroma_minus8 = sps->bit_depth_chroma_minus8,
.num_ref_frames = sps->num_ref_frames,
.seq_fields.bits = {
.chroma_format_idc = sps->chroma_format_idc,
.residual_colour_transform_flag = sps->separate_colour_plane_flag,
.gaps_in_frame_num_value_allowed_flag =
sps->gaps_in_frame_num_value_allowed_flag,
.frame_mbs_only_flag = sps->frame_mbs_only_flag,
.mb_adaptive_frame_field_flag = sps->mb_adaptive_frame_field_flag,
.direct_8x8_inference_flag = sps->direct_8x8_inference_flag,
.MinLumaBiPredSize8x8 = sps->level_idc >= 31, /* A.3.3.2 */
.log2_max_frame_num_minus4 = sps->log2_max_frame_num_minus4,
.pic_order_cnt_type = sps->pic_order_cnt_type,
.log2_max_pic_order_cnt_lsb_minus4 = sps->log2_max_pic_order_cnt_lsb_minus4,
.delta_pic_order_always_zero_flag = sps->delta_pic_order_always_zero_flag,
},
.pic_init_qp_minus26 = pps->pic_init_qp_minus26,
.pic_init_qs_minus26 = pps->pic_init_qs_minus26,
.chroma_qp_index_offset = pps->chroma_qp_index_offset,
.second_chroma_qp_index_offset = pps->second_chroma_qp_index_offset,
.pic_fields.bits = {
.entropy_coding_mode_flag = pps->entropy_coding_mode_flag,
.weighted_pred_flag = pps->weighted_pred_flag,
.weighted_bipred_idc = pps->weighted_bipred_idc,
.transform_8x8_mode_flag = pps->transform_8x8_mode_flag,
.field_pic_flag = slice->header.field_pic_flag,
.constrained_intra_pred_flag = pps->constrained_intra_pred_flag,
.pic_order_present_flag = pps->pic_order_present_flag,
.deblocking_filter_control_present_flag =
pps->deblocking_filter_control_present_flag,
.redundant_pic_cnt_present_flag = pps->redundant_pic_cnt_present_flag,
.reference_pic_flag = picture->nal_ref_idc != 0,
},
.frame_num = slice->header.frame_num,
};
/* *INDENT-ON* */
_fill_vaapi_pic (&pic_param.CurrPic, picture, FALSE);
/* reference frames */
{
guint ref_frame_idx = 0;
g_array_set_size (ref_list, 0);
gst_h264_dpb_get_pictures_short_term_ref (dpb, FALSE, FALSE, ref_list);
for (i = 0; ref_frame_idx < 16 && i < ref_list->len; i++) {
GstH264Picture *pic = g_array_index (ref_list, GstH264Picture *, i);
_fill_vaapi_pic (&pic_param.ReferenceFrames[ref_frame_idx++], pic, TRUE);
}
g_array_set_size (ref_list, 0);
gst_h264_dpb_get_pictures_long_term_ref (dpb, FALSE, ref_list);
for (i = 0; ref_frame_idx < 16 && i < ref_list->len; i++) {
GstH264Picture *pic = g_array_index (ref_list, GstH264Picture *, i);
_fill_vaapi_pic (&pic_param.ReferenceFrames[ref_frame_idx++], pic, TRUE);
}
g_array_set_size (ref_list, 0);
for (; ref_frame_idx < 16; ref_frame_idx++)
_init_vaapi_pic (&pic_param.ReferenceFrames[ref_frame_idx]);
}
if (!gst_va_decoder_add_param_buffer (base->decoder, va_pic,
VAPictureParameterBufferType, &pic_param, sizeof (pic_param)))
return FALSE;
/* there are always 6 4x4 scaling lists */
for (i = 0; i < 6; i++) {
gst_h264_quant_matrix_4x4_get_raster_from_zigzag (iq_matrix.ScalingList4x4
[i], pps->scaling_lists_4x4[i]);
}
/* We need the first 2 entries (Y intra and Y inter for YCbCr 4:2:2 and
* less, and the full 6 entries for 4:4:4, see Table 7-2 of the spec for
* more details */
n = (pps->sequence->chroma_format_idc == 3) ? 6 : 2;
for (i = 0; i < n; i++) {
gst_h264_quant_matrix_8x8_get_raster_from_zigzag (iq_matrix.ScalingList8x8
[i], pps->scaling_lists_8x8[i]);
}
return gst_va_decoder_add_param_buffer (base->decoder, va_pic,
VAIQMatrixBufferType, &iq_matrix, sizeof (iq_matrix));
}
static gboolean
gst_va_h264_dec_new_picture (GstH264Decoder * decoder,
GstVideoCodecFrame * frame, GstH264Picture * picture)
{
GstVaH264Dec *self = GST_VA_H264_DEC (decoder);
GstVaDecodePicture *pic;
GstVideoDecoder *vdec = GST_VIDEO_DECODER (decoder);
GstVaBaseDec *base = GST_VA_BASE_DEC (decoder);
self->last_ret = gst_video_decoder_allocate_output_frame (vdec, frame);
if (self->last_ret != GST_FLOW_OK)
goto error;
pic = gst_va_decode_picture_new (base->decoder, frame->output_buffer);
gst_h264_picture_set_user_data (picture, pic,
(GDestroyNotify) gst_va_decode_picture_free);
GST_LOG_OBJECT (self, "New va decode picture %p - %#x", pic,
gst_va_decode_picture_get_surface (pic));
return TRUE;
error:
{
GST_WARNING_OBJECT (self,
"Failed to allocated output buffer, return %s",
gst_flow_get_name (self->last_ret));
return FALSE;
}
}
static gboolean
gst_va_h264_dec_new_field_picture (GstH264Decoder * decoder,
const GstH264Picture * first_field, GstH264Picture * second_field)
{
GstVaDecodePicture *first_pic, *second_pic;
GstVaH264Dec *self = GST_VA_H264_DEC (decoder);
GstVaBaseDec *base = GST_VA_BASE_DEC (decoder);
first_pic = gst_h264_picture_get_user_data ((GstH264Picture *) first_field);
if (!first_pic)
return FALSE;
second_pic = gst_va_decode_picture_new (base->decoder, first_pic->gstbuffer);
gst_h264_picture_set_user_data (second_field, second_pic,
(GDestroyNotify) gst_va_decode_picture_free);
GST_LOG_OBJECT (self, "New va decode picture %p - %#x", second_pic,
gst_va_decode_picture_get_surface (second_pic));
return TRUE;
}
static inline guint
_get_num_views (const GstH264SPS * sps)
{
return 1 + (sps->extension_type == GST_H264_NAL_EXTENSION_MVC ?
sps->extension.mvc.num_views_minus1 : 0);
}
static guint
_get_rtformat (GstVaH264Dec * self, guint8 bit_depth_luma,
guint8 chroma_format_idc)
{
switch (bit_depth_luma) {
case 10:
if (chroma_format_idc == 3)
return VA_RT_FORMAT_YUV444_10;
if (chroma_format_idc == 2)
return VA_RT_FORMAT_YUV422_10;
else
return VA_RT_FORMAT_YUV420_10;
break;
case 8:
if (chroma_format_idc == 3)
return VA_RT_FORMAT_YUV444;
if (chroma_format_idc == 2)
return VA_RT_FORMAT_YUV422;
else
return VA_RT_FORMAT_YUV420;
break;
default:
GST_ERROR_OBJECT (self, "Unsupported chroma format: %d "
"(with depth luma: %d)", chroma_format_idc, bit_depth_luma);
return 0;
}
}
/* *INDENT-OFF* */
static const struct
{
GstH264Profile profile_idc;
VAProfile va_profile;
} profile_map[] = {
#define P(idc, va) { G_PASTE (GST_H264_PROFILE_, idc), G_PASTE (VAProfileH264, va) }
/* P (BASELINE, ), */
P (MAIN, Main),
/* P (EXTENDED, ), */
P (HIGH, High),
/* P (HIGH10, ), */
/* P (HIGH_422, ), */
/* P (HIGH_444, ), */
P (MULTIVIEW_HIGH, MultiviewHigh),
P (STEREO_HIGH, StereoHigh),
/* P (SCALABLE_BASELINE, ), */
/* P (SCALABLE_HIGH, ), */
#undef P
};
/* *INDENT-ON* */
static VAProfile
_get_profile (GstVaH264Dec * self, const GstH264SPS * sps, gint max_dpb_size)
{
GstVaBaseDec *base = GST_VA_BASE_DEC (self);
VAProfile profiles[4];
gint i = 0, j;
for (j = 0; j < G_N_ELEMENTS (profile_map); j++) {
if (profile_map[j].profile_idc == sps->profile_idc) {
profiles[i++] = profile_map[j].va_profile;
break;
}
}
switch (sps->profile_idc) {
case GST_H264_PROFILE_BASELINE:
/* A.2 compliant */
if (sps->constraint_set0_flag || sps->constraint_set1_flag
|| sps->constraint_set2_flag) {
profiles[i++] = VAProfileH264ConstrainedBaseline;
profiles[i++] = VAProfileH264Main;
}
break;
case GST_H264_PROFILE_EXTENDED:
if (sps->constraint_set1_flag) { /* A.2.2 (main profile) */
profiles[i++] = VAProfileH264Main;
}
break;
case GST_H264_PROFILE_MULTIVIEW_HIGH:
if (_get_num_views (sps) == 2) {
profiles[i++] = VAProfileH264StereoHigh;
}
if (max_dpb_size <= 16 /* && i965 driver */ ) {
profiles[i++] = VAProfileH264MultiviewHigh;
}
default:
break;
}
for (j = 0; j < i && j < G_N_ELEMENTS (profiles); j++) {
if (gst_va_decoder_has_profile (base->decoder, profiles[j]))
return profiles[j];
}
GST_ERROR_OBJECT (self, "Unsupported profile: %d", sps->profile_idc);
return VAProfileNone;
}
static gboolean
gst_va_h264_dec_new_sequence (GstH264Decoder * decoder, const GstH264SPS * sps,
gint max_dpb_size)
{
GstVaBaseDec *base = GST_VA_BASE_DEC (decoder);
GstVaH264Dec *self = GST_VA_H264_DEC (decoder);
VAProfile profile;
gint display_width;
gint display_height;
gint padding_left, padding_right, padding_top, padding_bottom;
guint rt_format;
gboolean negotiation_needed = FALSE;
gboolean interlaced;
if (self->dpb_size < max_dpb_size)
self->dpb_size = max_dpb_size;
if (sps->frame_cropping_flag) {
display_width = sps->crop_rect_width;
display_height = sps->crop_rect_height;
padding_left = sps->crop_rect_x;
padding_right = sps->width - sps->crop_rect_x - display_width;
padding_top = sps->crop_rect_y;
padding_bottom = sps->height - sps->crop_rect_y - display_height;
} else {
display_width = sps->width;
display_height = sps->height;
padding_left = padding_right = padding_top = padding_bottom = 0;
}
profile = _get_profile (self, sps, max_dpb_size);
if (profile == VAProfileNone)
return FALSE;
rt_format = _get_rtformat (self, sps->bit_depth_luma_minus8 + 8,
sps->chroma_format_idc);
if (rt_format == 0)
return FALSE;
if (!gst_va_decoder_config_is_equal (base->decoder, profile,
rt_format, sps->width, sps->height)) {
base->profile = profile;
base->rt_format = rt_format;
self->coded_width = sps->width;
self->coded_height = sps->height;
negotiation_needed = TRUE;
GST_INFO_OBJECT (self, "Format changed to %s [%x] (%dx%d)",
gst_va_profile_name (profile), rt_format, self->coded_width,
self->coded_height);
}
if (base->width != display_width || base->height != display_height) {
base->width = display_width;
base->height = display_height;
negotiation_needed = TRUE;
GST_INFO_OBJECT (self, "Resolution changed to %dx%d", base->width,
base->height);
}
interlaced = !sps->frame_mbs_only_flag;
if (self->interlaced != interlaced) {
self->interlaced = interlaced;
negotiation_needed = TRUE;
GST_INFO_OBJECT (self, "Interlaced mode changed to %d", interlaced);
}
base->need_valign = base->width < self->coded_width
|| base->height < self->coded_height;
if (base->need_valign) {
/* *INDENT-OFF* */
if (base->valign.padding_left != padding_left ||
base->valign.padding_right != padding_right ||
base->valign.padding_top != padding_top ||
base->valign.padding_bottom != padding_bottom) {
negotiation_needed = TRUE;
GST_INFO_OBJECT (self, "crop rect changed to (%d,%d)-->(%d,%d)",
padding_left, padding_top, padding_right, padding_bottom);
}
base->valign = (GstVideoAlignment) {
.padding_left = padding_left,
.padding_right = padding_right,
.padding_top = padding_top,
.padding_bottom = padding_bottom,
};
/* *INDENT-ON* */
}
base->min_buffers = self->dpb_size + 4; /* dpb size + scratch surfaces */
if (negotiation_needed) {
self->need_negotiation = TRUE;
if (!gst_video_decoder_negotiate (GST_VIDEO_DECODER (self))) {
GST_ERROR_OBJECT (self, "Failed to negotiate with downstream");
return FALSE;
}
}
return TRUE;
}
static GstCaps *
_complete_sink_caps (GstCaps * sinkcaps)
{
GstCaps *caps = gst_caps_copy (sinkcaps);
GValue val = G_VALUE_INIT;
const gchar *streamformat[] = { "avc", "avc3", "byte-stream" };
gint i;
g_value_init (&val, G_TYPE_STRING);
g_value_set_string (&val, "au");
gst_caps_set_value (caps, "alignment", &val);
g_value_unset (&val);
gst_value_list_init (&val, G_N_ELEMENTS (streamformat));
for (i = 0; i < G_N_ELEMENTS (streamformat); i++) {
GValue v = G_VALUE_INIT;
g_value_init (&v, G_TYPE_STRING);
g_value_set_string (&v, streamformat[i]);
gst_value_list_append_value (&val, &v);
g_value_unset (&v);
}
gst_caps_set_value (caps, "stream-format", &val);
g_value_unset (&val);
return caps;
}
static GstCaps *
gst_va_h264_dec_getcaps (GstVideoDecoder * decoder, GstCaps * filter)
{
GstCaps *sinkcaps, *caps = NULL, *tmp;
GstVaBaseDec *base = GST_VA_BASE_DEC (decoder);
if (base->decoder)
caps = gst_va_decoder_get_sinkpad_caps (base->decoder);
if (caps) {
sinkcaps = _complete_sink_caps (caps);
gst_caps_unref (caps);
if (filter) {
tmp = gst_caps_intersect_full (filter, sinkcaps,
GST_CAPS_INTERSECT_FIRST);
gst_caps_unref (sinkcaps);
caps = tmp;
} else {
caps = sinkcaps;
}
GST_LOG_OBJECT (base, "Returning caps %" GST_PTR_FORMAT, caps);
} else {
caps = gst_video_decoder_proxy_getcaps (decoder, NULL, filter);
}
return caps;
}
static gboolean
gst_va_h264_dec_negotiate (GstVideoDecoder * decoder)
{
GstVaBaseDec *base = GST_VA_BASE_DEC (decoder);
GstVaH264Dec *self = GST_VA_H264_DEC (decoder);
GstVideoFormat format = GST_VIDEO_FORMAT_UNKNOWN;
GstCapsFeatures *capsfeatures = NULL;
GstH264Decoder *h264dec = GST_H264_DECODER (decoder);
/* Ignore downstream renegotiation request. */
if (!self->need_negotiation)
return TRUE;
self->need_negotiation = FALSE;
if (gst_va_decoder_is_open (base->decoder)
&& !gst_va_decoder_close (base->decoder))
return FALSE;
if (!gst_va_decoder_open (base->decoder, base->profile, base->rt_format))
return FALSE;
if (!gst_va_decoder_set_frame_size (base->decoder, self->coded_width,
self->coded_height))
return FALSE;
if (base->output_state)
gst_video_codec_state_unref (base->output_state);
gst_va_base_dec_get_preferred_format_and_caps_features (base, &format,
&capsfeatures);
base->output_state =
gst_video_decoder_set_output_state (decoder, format,
base->width, base->height, h264dec->input_state);
if (self->interlaced)
base->output_state->info.interlace_mode = GST_VIDEO_INTERLACE_MODE_MIXED;
base->output_state->caps = gst_video_info_to_caps (&base->output_state->info);
if (capsfeatures)
gst_caps_set_features_simple (base->output_state->caps, capsfeatures);
GST_INFO_OBJECT (self, "Negotiated caps %" GST_PTR_FORMAT,
base->output_state->caps);
return GST_VIDEO_DECODER_CLASS (GST_VA_BASE_DEC_GET_PARENT_CLASS
(decoder))->negotiate (decoder);
}
static void
gst_va_h264_dec_dispose (GObject * object)
{
GstVaH264Dec *self = GST_VA_H264_DEC (object);
gst_va_base_dec_close (GST_VIDEO_DECODER (object));
g_clear_pointer (&self->ref_list, g_array_unref);
G_OBJECT_CLASS (GST_VA_BASE_DEC_GET_PARENT_CLASS (object))->dispose (object);
}
static void
gst_va_h264_dec_class_init (gpointer g_class, gpointer class_data)
{
GstCaps *src_doc_caps, *sink_doc_caps;
GObjectClass *gobject_class = G_OBJECT_CLASS (g_class);
GstElementClass *element_class = GST_ELEMENT_CLASS (g_class);
GstH264DecoderClass *h264decoder_class = GST_H264_DECODER_CLASS (g_class);
GstVideoDecoderClass *decoder_class = GST_VIDEO_DECODER_CLASS (g_class);
struct CData *cdata = class_data;
gchar *long_name;
if (cdata->description) {
long_name = g_strdup_printf ("VA-API H.264 Decoder in %s",
cdata->description);
} else {
long_name = g_strdup ("VA-API H.264 Decoder");
}
gst_element_class_set_metadata (element_class, long_name,
"Codec/Decoder/Video/Hardware",
"VA-API based H.264 video decoder",
"Víctor Jáquez <vjaquez@igalia.com>");
sink_doc_caps = gst_caps_from_string (sink_caps_str);
src_doc_caps = gst_caps_from_string (src_caps_str);
gst_va_base_dec_class_init (GST_VA_BASE_DEC_CLASS (g_class), H264,
cdata->render_device_path, cdata->sink_caps, cdata->src_caps,
src_doc_caps, sink_doc_caps);
gobject_class->dispose = gst_va_h264_dec_dispose;
decoder_class->getcaps = GST_DEBUG_FUNCPTR (gst_va_h264_dec_getcaps);
decoder_class->negotiate = GST_DEBUG_FUNCPTR (gst_va_h264_dec_negotiate);
h264decoder_class->new_sequence =
GST_DEBUG_FUNCPTR (gst_va_h264_dec_new_sequence);
h264decoder_class->decode_slice =
GST_DEBUG_FUNCPTR (gst_va_h264_dec_decode_slice);
h264decoder_class->new_picture =
GST_DEBUG_FUNCPTR (gst_va_h264_dec_new_picture);
h264decoder_class->output_picture =
GST_DEBUG_FUNCPTR (gst_va_h264_dec_output_picture);
h264decoder_class->start_picture =
GST_DEBUG_FUNCPTR (gst_va_h264_dec_start_picture);
h264decoder_class->end_picture =
GST_DEBUG_FUNCPTR (gst_va_h264_dec_end_picture);
h264decoder_class->new_field_picture =
GST_DEBUG_FUNCPTR (gst_va_h264_dec_new_field_picture);
g_free (long_name);
g_free (cdata->description);
g_free (cdata->render_device_path);
gst_caps_unref (cdata->src_caps);
gst_caps_unref (cdata->sink_caps);
g_free (cdata);
}
static void
gst_va_h264_dec_init (GTypeInstance * instance, gpointer g_class)
{
GstVaH264Dec *self = GST_VA_H264_DEC (instance);
gst_va_base_dec_init (GST_VA_BASE_DEC (instance), GST_CAT_DEFAULT);
gst_h264_decoder_set_process_ref_pic_lists (GST_H264_DECODER (instance),
TRUE);
self->ref_list = g_array_sized_new (FALSE, TRUE,
sizeof (GstH264Picture *), 16);
g_array_set_clear_func (self->ref_list,
(GDestroyNotify) gst_h264_picture_clear);
}
static gpointer
_register_debug_category (gpointer data)
{
GST_DEBUG_CATEGORY_INIT (gst_va_h264dec_debug, "vah264dec", 0,
"VA h264 decoder");
return NULL;
}
gboolean
gst_va_h264_dec_register (GstPlugin * plugin, GstVaDevice * device,
GstCaps * sink_caps, GstCaps * src_caps, guint rank)
{
static GOnce debug_once = G_ONCE_INIT;
GType type;
GTypeInfo type_info = {
.class_size = sizeof (GstVaH264DecClass),
.class_init = gst_va_h264_dec_class_init,
.instance_size = sizeof (GstVaH264Dec),
.instance_init = gst_va_h264_dec_init,
};
struct CData *cdata;
gboolean ret;
gchar *type_name, *feature_name;
g_return_val_if_fail (GST_IS_PLUGIN (plugin), FALSE);
g_return_val_if_fail (GST_IS_VA_DEVICE (device), FALSE);
g_return_val_if_fail (GST_IS_CAPS (sink_caps), FALSE);
g_return_val_if_fail (GST_IS_CAPS (src_caps), FALSE);
cdata = g_new (struct CData, 1);
cdata->description = NULL;
cdata->render_device_path = g_strdup (device->render_device_path);
cdata->sink_caps = _complete_sink_caps (sink_caps);
cdata->src_caps = gst_caps_ref (src_caps);
/* class data will be leaked if the element never gets instantiated */
GST_MINI_OBJECT_FLAG_SET (cdata->sink_caps,
GST_MINI_OBJECT_FLAG_MAY_BE_LEAKED);
GST_MINI_OBJECT_FLAG_SET (src_caps, GST_MINI_OBJECT_FLAG_MAY_BE_LEAKED);
type_info.class_data = cdata;
type_name = g_strdup ("GstVaH264Dec");
feature_name = g_strdup ("vah264dec");
/* The first decoder to be registered should use a constant name,
* like vah264dec, for any additional decoders, we create unique
* names, using inserting the render device name. */
if (g_type_from_name (type_name)) {
gchar *basename = g_path_get_basename (device->render_device_path);
g_free (type_name);
g_free (feature_name);
type_name = g_strdup_printf ("GstVa%sH264Dec", basename);
feature_name = g_strdup_printf ("va%sh264dec", basename);
cdata->description = basename;
/* lower rank for non-first device */
if (rank > 0)
rank--;
}
g_once (&debug_once, _register_debug_category, NULL);
type = g_type_register_static (GST_TYPE_H264_DECODER,
type_name, &type_info, 0);
ret = gst_element_register (plugin, feature_name, rank, type);
g_free (type_name);
g_free (feature_name);
return ret;
}
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