diff options
Diffstat (limited to 'libavcodec/vaapi_encode_mpeg2.c')
| -rw-r--r-- | libavcodec/vaapi_encode_mpeg2.c | 470 |
1 files changed, 470 insertions, 0 deletions
diff --git a/libavcodec/vaapi_encode_mpeg2.c b/libavcodec/vaapi_encode_mpeg2.c new file mode 100644 index 0000000000..634178521f --- /dev/null +++ b/libavcodec/vaapi_encode_mpeg2.c @@ -0,0 +1,470 @@ +/* + * This file is part of Libav. + * + * Libav 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. + * + * Libav 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 Libav; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA + */ + +#include <va/va.h> +#include <va/va_enc_mpeg2.h> + +#include "libavutil/avassert.h" +#include "libavutil/common.h" +#include "libavutil/internal.h" +#include "libavutil/opt.h" +#include "libavutil/pixfmt.h" + +#include "avcodec.h" +#include "internal.h" +#include "mpegvideo.h" +#include "put_bits.h" +#include "vaapi_encode.h" + +typedef struct VAAPIEncodeMPEG2Context { + int mb_width; + int mb_height; + + int quant_i; + int quant_p; + int quant_b; + + int64_t last_i_frame; + + unsigned int bit_rate; + unsigned int vbv_buffer_size; +} VAAPIEncodeMPEG2Context; + + +#define vseq_var(name) vseq->name, name +#define vseqext_field(name) vseq->sequence_extension.bits.name, name +#define vgop_field(name) vseq->gop_header.bits.name, name +#define vpic_var(name) vpic->name, name +#define vpcext_field(name) vpic->picture_coding_extension.bits.name, name +#define vcomp_field(name) vpic->composite_display.bits.name, name + +#define u2(width, value, name) put_bits(&pbc, width, value) +#define u(width, ...) u2(width, __VA_ARGS__) + +static int vaapi_encode_mpeg2_write_sequence_header(AVCodecContext *avctx, + char *data, size_t *data_len) +{ + VAAPIEncodeContext *ctx = avctx->priv_data; + VAEncSequenceParameterBufferMPEG2 *vseq = ctx->codec_sequence_params; + VAAPIEncodeMPEG2Context *priv = ctx->priv_data; + PutBitContext pbc; + + init_put_bits(&pbc, data, 8 * *data_len); + + u(32, SEQ_START_CODE, sequence_header_code); + + u(12, vseq->picture_width, horizontal_size_value); + u(12, vseq->picture_height, vertical_size_value); + u(4, vseq_var(aspect_ratio_information)); + u(4, 8, frame_rate_code); + u(18, priv->bit_rate & 0x3fff, bit_rate_value); + u(1, 1, marker_bit); + u(10, priv->vbv_buffer_size & 0x3ff, vbv_buffer_size_value); + u(1, 0, constrained_parameters_flag); + u(1, 0, load_intra_quantiser_matrix); + // intra_quantiser_matrix[64] + u(1, 0, load_non_intra_quantiser_matrix); + // non_intra_quantiser_matrix[64] + + while (put_bits_count(&pbc) % 8) + u(1, 0, zero_bit); + + u(32, EXT_START_CODE, extension_start_code); + u(4, 1, extension_start_code_identifier); + u(8, vseqext_field(profile_and_level_indication)); + u(1, vseqext_field(progressive_sequence)); + u(2, vseqext_field(chroma_format)); + u(2, 0, horizontal_size_extension); + u(2, 0, vertical_size_extension); + u(12, priv->bit_rate >> 18, bit_rate_extension); + u(1, 1, marker_bit); + u(8, priv->vbv_buffer_size >> 10, vbv_buffer_size_extension); + u(1, vseqext_field(low_delay)); + u(2, vseqext_field(frame_rate_extension_n)); + u(2, vseqext_field(frame_rate_extension_d)); + + while (put_bits_count(&pbc) % 8) + u(1, 0, zero_bit); + + u(32, GOP_START_CODE, group_start_code); + u(25, vgop_field(time_code)); + u(1, vgop_field(closed_gop)); + u(1, vgop_field(broken_link)); + + while (put_bits_count(&pbc) % 8) + u(1, 0, zero_bit); + + *data_len = put_bits_count(&pbc); + flush_put_bits(&pbc); + + return 0; +} + +static int vaapi_encode_mpeg2_write_picture_header(AVCodecContext *avctx, + VAAPIEncodePicture *pic, + char *data, size_t *data_len) +{ + VAEncPictureParameterBufferMPEG2 *vpic = pic->codec_picture_params; + int picture_coding_type; + PutBitContext pbc; + + init_put_bits(&pbc, data, 8 * *data_len); + + u(32, PICTURE_START_CODE, picture_start_code); + u(10, vpic_var(temporal_reference)); + + switch (vpic->picture_type) { + case VAEncPictureTypeIntra: + picture_coding_type = AV_PICTURE_TYPE_I; + break; + case VAEncPictureTypePredictive: + picture_coding_type = AV_PICTURE_TYPE_P; + break; + case VAEncPictureTypeBidirectional: + picture_coding_type = AV_PICTURE_TYPE_B; + break; + default: + av_assert0(0 && "invalid picture_coding_type"); + } + u(3, picture_coding_type, picture_coding_type); + u(16, 0xffff, vbv_delay); + if (picture_coding_type == 2 || picture_coding_type == 3) { + u(1, 0, full_pel_forward_vector); + u(3, 7, forward_f_code); + } + if (picture_coding_type == 3) { + u(1, 0, full_pel_backward_vector); + u(3, 7, backward_f_code); + } + u(1, 0, extra_bit_picture); + + while (put_bits_count(&pbc) % 8) + u(1, 0, zero_bit); + + u(32, EXT_START_CODE, extension_start_code); + u(4, 8, extension_start_code_identifier); + u(4, vpic_var(f_code[0][0])); + u(4, vpic_var(f_code[0][1])); + u(4, vpic_var(f_code[1][0])); + u(4, vpic_var(f_code[1][1])); + u(2, vpcext_field(intra_dc_precision)); + u(2, vpcext_field(picture_structure)); + u(1, vpcext_field(top_field_first)); + u(1, vpcext_field(frame_pred_frame_dct)); + u(1, vpcext_field(concealment_motion_vectors)); + u(1, vpcext_field(q_scale_type)); + u(1, vpcext_field(intra_vlc_format)); + u(1, vpcext_field(alternate_scan)); + u(1, vpcext_field(repeat_first_field)); + u(1, 1, chroma_420_type); + u(1, vpcext_field(progressive_frame)); + u(1, vpcext_field(composite_display_flag)); + if (vpic->picture_coding_extension.bits.composite_display_flag) { + u(1, vcomp_field(v_axis)); + u(3, vcomp_field(field_sequence)); + u(1, vcomp_field(sub_carrier)); + u(7, vcomp_field(burst_amplitude)); + u(8, vcomp_field(sub_carrier_phase)); + } + + while (put_bits_count(&pbc) % 8) + u(1, 0, zero_bit); + + *data_len = put_bits_count(&pbc); + flush_put_bits(&pbc); + + return 0; +} + +static int vaapi_encode_mpeg2_init_sequence_params(AVCodecContext *avctx) +{ + VAAPIEncodeContext *ctx = avctx->priv_data; + VAEncSequenceParameterBufferMPEG2 *vseq = ctx->codec_sequence_params; + VAEncPictureParameterBufferMPEG2 *vpic = ctx->codec_picture_params; + VAAPIEncodeMPEG2Context *priv = ctx->priv_data; + + vseq->intra_period = avctx->gop_size; + vseq->ip_period = ctx->b_per_p + 1; + + vseq->picture_width = avctx->width; + vseq->picture_height = avctx->height; + + vseq->bits_per_second = avctx->bit_rate; + if (avctx->framerate.num > 0 && avctx->framerate.den > 0) + vseq->frame_rate = (float)avctx->framerate.num / avctx->framerate.den; + else + vseq->frame_rate = (float)avctx->time_base.num / avctx->time_base.den; + + vseq->aspect_ratio_information = 1; + vseq->vbv_buffer_size = avctx->rc_buffer_size / (16 * 1024); + + vseq->sequence_extension.bits.profile_and_level_indication = + avctx->profile << 4 | avctx->level; + vseq->sequence_extension.bits.progressive_sequence = 1; + vseq->sequence_extension.bits.chroma_format = 1; + vseq->sequence_extension.bits.low_delay = 0; + vseq->sequence_extension.bits.frame_rate_extension_n = 0; + vseq->sequence_extension.bits.frame_rate_extension_d = 0; + + vseq->new_gop_header = 0; + vseq->gop_header.bits.time_code = 0; + vseq->gop_header.bits.closed_gop = 1; + vseq->gop_header.bits.broken_link = 0; + + vpic->forward_reference_picture = VA_INVALID_ID; + vpic->backward_reference_picture = VA_INVALID_ID; + vpic->reconstructed_picture = VA_INVALID_ID; + + vpic->coded_buf = VA_INVALID_ID; + + vpic->temporal_reference = 0; + vpic->f_code[0][0] = 15; + vpic->f_code[0][1] = 15; + vpic->f_code[1][0] = 15; + vpic->f_code[1][1] = 15; + + vpic->picture_coding_extension.bits.intra_dc_precision = 0; + vpic->picture_coding_extension.bits.picture_structure = 3; + vpic->picture_coding_extension.bits.top_field_first = 0; + vpic->picture_coding_extension.bits.frame_pred_frame_dct = 1; + vpic->picture_coding_extension.bits.concealment_motion_vectors = 0; + vpic->picture_coding_extension.bits.q_scale_type = 0; + vpic->picture_coding_extension.bits.intra_vlc_format = 0; + vpic->picture_coding_extension.bits.alternate_scan = 0; + vpic->picture_coding_extension.bits.repeat_first_field = 0; + vpic->picture_coding_extension.bits.progressive_frame = 1; + vpic->picture_coding_extension.bits.composite_display_flag = 0; + + priv->bit_rate = (avctx->bit_rate + 399) / 400; + priv->vbv_buffer_size = avctx->rc_buffer_size / (16 * 1024); + + return 0; +} + +static int vaapi_encode_mpeg2_init_picture_params(AVCodecContext *avctx, + VAAPIEncodePicture *pic) +{ + VAAPIEncodeContext *ctx = avctx->priv_data; + VAEncPictureParameterBufferMPEG2 *vpic = pic->codec_picture_params; + VAAPIEncodeMPEG2Context *priv = ctx->priv_data; + int fch, fcv; + + switch (avctx->level) { + case 4: // High. + case 6: // High 1440. + fch = 9; + fcv = 5; + break; + case 8: // Main. + fch = 8; + fcv = 5; + break; + case 10: // Low. + default: + fch = 7; + fcv = 4; + break; + } + + switch (pic->type) { + case PICTURE_TYPE_IDR: + case PICTURE_TYPE_I: + vpic->picture_type = VAEncPictureTypeIntra; + priv->last_i_frame = pic->display_order; + break; + case PICTURE_TYPE_P: + vpic->picture_type = VAEncPictureTypePredictive; + vpic->forward_reference_picture = pic->refs[0]->recon_surface; + vpic->f_code[0][0] = fch; + vpic->f_code[0][1] = fcv; + break; + case PICTURE_TYPE_B: + vpic->picture_type = VAEncPictureTypeBidirectional; + vpic->forward_reference_picture = pic->refs[0]->recon_surface; + vpic->backward_reference_picture = pic->refs[1]->recon_surface; + vpic->f_code[0][0] = fch; + vpic->f_code[0][1] = fcv; + vpic->f_code[1][0] = fch; + vpic->f_code[1][1] = fcv; + break; + default: + av_assert0(0 && "invalid picture type"); + } + + vpic->reconstructed_picture = pic->recon_surface; + vpic->coded_buf = pic->output_buffer; + + vpic->temporal_reference = pic->display_order - priv->last_i_frame; + + pic->nb_slices = priv->mb_height; + + return 0; +} + +static int vaapi_encode_mpeg2_init_slice_params(AVCodecContext *avctx, + VAAPIEncodePicture *pic, + VAAPIEncodeSlice *slice) +{ + VAAPIEncodeContext *ctx = avctx->priv_data; + VAEncSliceParameterBufferMPEG2 *vslice = slice->codec_slice_params; + VAAPIEncodeMPEG2Context *priv = ctx->priv_data; + int qp; + + vslice->macroblock_address = priv->mb_width * slice->index; + vslice->num_macroblocks = priv->mb_width; + + switch (pic->type) { + case PICTURE_TYPE_IDR: + case PICTURE_TYPE_I: + qp = priv->quant_i; + break; + case PICTURE_TYPE_P: + qp = priv->quant_p; + break; + case PICTURE_TYPE_B: + qp = priv->quant_b; + break; + default: + av_assert0(0 && "invalid picture type"); + } + + vslice->quantiser_scale_code = qp; + vslice->is_intra_slice = (pic->type == PICTURE_TYPE_IDR || + pic->type == PICTURE_TYPE_I); + + return 0; +} + +static av_cold int vaapi_encode_mpeg2_configure(AVCodecContext *avctx) +{ + VAAPIEncodeContext *ctx = avctx->priv_data; + VAAPIEncodeMPEG2Context *priv = ctx->priv_data; + + priv->mb_width = FFALIGN(avctx->width, 16) / 16; + priv->mb_height = FFALIGN(avctx->height, 16) / 16; + + if (ctx->va_rc_mode == VA_RC_CQP) { + priv->quant_p = av_clip(avctx->global_quality, 1, 31); + if (avctx->i_quant_factor > 0.0) + priv->quant_i = av_clip((avctx->global_quality * + avctx->i_quant_factor + + avctx->i_quant_offset) + 0.5, + 1, 31); + else + priv->quant_i = priv->quant_p; + if (avctx->b_quant_factor > 0.0) + priv->quant_b = av_clip((avctx->global_quality * + avctx->b_quant_factor + + avctx->b_quant_offset) + 0.5, + 1, 31); + else + priv->quant_b = priv->quant_p; + + av_log(avctx, AV_LOG_DEBUG, "Using fixed quantiser " + "%d / %d / %d for I- / P- / B-frames.\n", + priv->quant_i, priv->quant_p, priv->quant_b); + + } else { + av_assert0(0 && "Invalid RC mode."); + } + + return 0; +} + +static const VAAPIEncodeType vaapi_encode_type_mpeg2 = { + .priv_data_size = sizeof(VAAPIEncodeMPEG2Context), + + .configure = &vaapi_encode_mpeg2_configure, + + .sequence_params_size = sizeof(VAEncSequenceParameterBufferMPEG2), + .init_sequence_params = &vaapi_encode_mpeg2_init_sequence_params, + + .picture_params_size = sizeof(VAEncPictureParameterBufferMPEG2), + .init_picture_params = &vaapi_encode_mpeg2_init_picture_params, + + .slice_params_size = sizeof(VAEncSliceParameterBufferMPEG2), + .init_slice_params = &vaapi_encode_mpeg2_init_slice_params, + + .sequence_header_type = VAEncPackedHeaderSequence, + .write_sequence_header = &vaapi_encode_mpeg2_write_sequence_header, + + .picture_header_type = VAEncPackedHeaderPicture, + .write_picture_header = &vaapi_encode_mpeg2_write_picture_header, +}; + +static av_cold int vaapi_encode_mpeg2_init(AVCodecContext *avctx) +{ + VAAPIEncodeContext *ctx = avctx->priv_data; + + ctx->codec = &vaapi_encode_type_mpeg2; + + switch (avctx->profile) { + case FF_PROFILE_MPEG2_SIMPLE: + ctx->va_profile = VAProfileMPEG2Simple; + break; + case FF_PROFILE_MPEG2_MAIN: + ctx->va_profile = VAProfileMPEG2Main; + break; + default: + av_log(avctx, AV_LOG_ERROR, "Unknown MPEG-2 profile %d.\n", + avctx->profile); + return AVERROR(EINVAL); + } + + ctx->va_entrypoint = VAEntrypointEncSlice; + ctx->va_rt_format = VA_RT_FORMAT_YUV420; + ctx->va_rc_mode = VA_RC_CQP; + + ctx->va_packed_headers = VA_ENC_PACKED_HEADER_SEQUENCE | + VA_ENC_PACKED_HEADER_PICTURE; + + ctx->surface_width = FFALIGN(avctx->width, 16); + ctx->surface_height = FFALIGN(avctx->height, 16); + + return ff_vaapi_encode_init(avctx); +} + +static const AVCodecDefault vaapi_encode_mpeg2_defaults[] = { + { "profile", "4" }, + { "level", "4" }, + { "bf", "1" }, + { "g", "120" }, + { "i_qfactor", "1.0" }, + { "i_qoffset", "0.0" }, + { "b_qfactor", "1.2" }, + { "b_qoffset", "0.0" }, + { "global_quality", "10" }, + { NULL }, +}; + +AVCodec ff_mpeg2_vaapi_encoder = { + .name = "mpeg2_vaapi", + .long_name = NULL_IF_CONFIG_SMALL("MPEG-2 (VAAPI)"), + .type = AVMEDIA_TYPE_VIDEO, + .id = AV_CODEC_ID_MPEG2VIDEO, + .priv_data_size = sizeof(VAAPIEncodeContext), + .init = &vaapi_encode_mpeg2_init, + .encode2 = &ff_vaapi_encode2, + .close = &ff_vaapi_encode_close, + .capabilities = AV_CODEC_CAP_DELAY, + .defaults = vaapi_encode_mpeg2_defaults, + .pix_fmts = (const enum AVPixelFormat[]) { + AV_PIX_FMT_VAAPI, + AV_PIX_FMT_NONE, + }, +}; |