32 return (
s->mpeg_f_code[0][0] << 12) | (
s->mpeg_f_code[0][1] << 8) |
33 (
s->mpeg_f_code[1][0] << 4) |
s->mpeg_f_code[1][1];
39 return s->first_field ||
s->picture_structure ==
PICT_FRAME;
46 VAPictureParameterBufferMPEG2 pic_param;
47 VAIQMatrixBufferMPEG2 iq_matrix;
52 pic_param = (VAPictureParameterBufferMPEG2) {
53 .horizontal_size =
s->width,
54 .vertical_size =
s->height,
55 .forward_reference_picture = VA_INVALID_ID,
56 .backward_reference_picture = VA_INVALID_ID,
57 .picture_coding_type =
s->pict_type,
59 .picture_coding_extension.bits = {
60 .intra_dc_precision =
s->intra_dc_precision,
61 .picture_structure =
s->picture_structure,
62 .top_field_first =
s->top_field_first,
63 .frame_pred_frame_dct =
s->frame_pred_frame_dct,
64 .concealment_motion_vectors =
s->concealment_motion_vectors,
65 .q_scale_type =
s->q_scale_type,
66 .intra_vlc_format =
s->intra_vlc_format,
67 .alternate_scan =
s->alternate_scan,
68 .repeat_first_field =
s->repeat_first_field,
69 .progressive_frame =
s->progressive_frame,
74 switch (
s->pict_type) {
84 VAPictureParameterBufferType,
85 &pic_param,
sizeof(pic_param));
89 iq_matrix.load_intra_quantiser_matrix = 1;
90 iq_matrix.load_non_intra_quantiser_matrix = 1;
91 iq_matrix.load_chroma_intra_quantiser_matrix = 1;
92 iq_matrix.load_chroma_non_intra_quantiser_matrix = 1;
94 for (
i = 0;
i < 64;
i++) {
96 iq_matrix.intra_quantiser_matrix[
i] =
s->intra_matrix[n];
97 iq_matrix.non_intra_quantiser_matrix[
i] =
s->inter_matrix[n];
98 iq_matrix.chroma_intra_quantiser_matrix[
i] =
s->chroma_intra_matrix[n];
99 iq_matrix.chroma_non_intra_quantiser_matrix[
i] =
s->chroma_inter_matrix[n];
103 VAIQMatrixBufferType,
104 &iq_matrix,
sizeof(iq_matrix));
135 VASliceParameterBufferMPEG2 slice_param;
137 uint32_t quantiser_scale_code, intra_slice_flag, macroblock_offset;
144 quantiser_scale_code =
get_bits(&gb, 5);
146 if (intra_slice_flag) {
153 slice_param = (VASliceParameterBufferMPEG2) {
154 .slice_data_size =
size,
155 .slice_data_offset = 0,
156 .slice_data_flag = VA_SLICE_DATA_FLAG_ALL,
157 .macroblock_offset = macroblock_offset,
158 .slice_horizontal_position =
s->mb_x,
159 .slice_vertical_position =
s->mb_y >> (
s->picture_structure !=
PICT_FRAME),
160 .quantiser_scale_code = quantiser_scale_code,
161 .intra_slice_flag = intra_slice_flag,
165 &slice_param,
sizeof(slice_param),
176 .
name =
"mpeg2_vaapi",
static av_cold int init(AVCodecContext *avctx)
static av_cold int uninit(AVCodecContext *avctx)
static unsigned int get_bits_long(GetBitContext *s, int n)
Read 0-32 bits.
static unsigned int get_bits1(GetBitContext *s)
static void skip_bits(GetBitContext *s, int n)
static int skip_1stop_8data_bits(GetBitContext *gb)
static int get_bits_count(const GetBitContext *s)
static unsigned int get_bits(GetBitContext *s, int n)
Read 1-25 bits.
static int init_get_bits(GetBitContext *s, const uint8_t *buffer, int bit_size)
Initialize GetBitContext.
@ AV_CODEC_ID_MPEG2VIDEO
preferred ID for MPEG-1/2 video decoding
#define AVERROR_INVALIDDATA
Invalid data found when processing input.
@ AV_PICTURE_TYPE_P
Predicted.
@ AV_PICTURE_TYPE_B
Bi-dir predicted.
#define HWACCEL_CAP_ASYNC_SAFE
common internal API header
const uint8_t ff_zigzag_direct[64]
void ff_mpeg_draw_horiz_band(MpegEncContext *s, int y, int h)
main external API structure.
const char * name
Name of the hardware accelerated codec.
VASurfaceID output_surface
int ff_vaapi_decode_make_slice_buffer(AVCodecContext *avctx, VAAPIDecodePicture *pic, const void *params_data, size_t params_size, const void *slice_data, size_t slice_size)
int ff_vaapi_decode_make_param_buffer(AVCodecContext *avctx, VAAPIDecodePicture *pic, int type, const void *data, size_t size)
int ff_vaapi_common_frame_params(AVCodecContext *avctx, AVBufferRef *hw_frames_ctx)
int ff_vaapi_decode_issue(AVCodecContext *avctx, VAAPIDecodePicture *pic)
int ff_vaapi_decode_init(AVCodecContext *avctx)
int ff_vaapi_decode_uninit(AVCodecContext *avctx)
int ff_vaapi_decode_cancel(AVCodecContext *avctx, VAAPIDecodePicture *pic)
static VASurfaceID ff_vaapi_get_surface_id(AVFrame *pic)
static int vaapi_mpeg2_start_frame(AVCodecContext *avctx, av_unused const uint8_t *buffer, av_unused uint32_t size)
static int mpeg2_get_is_frame_start(const MpegEncContext *s)
Determine frame start: first field for field picture or frame picture.
const AVHWAccel ff_mpeg2_vaapi_hwaccel
static int vaapi_mpeg2_end_frame(AVCodecContext *avctx)
static int vaapi_mpeg2_decode_slice(AVCodecContext *avctx, const uint8_t *buffer, uint32_t size)
static int mpeg2_get_f_code(const MpegEncContext *s)
Reconstruct bitstream f_code.