/* * gstvaapidecoder_vc1.c - VC-1 decoder * * Copyright (C) 2011 Intel Corporation * * This library 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. * * 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 * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free * Software Foundation, Inc., 51 Franklin Street, Fifth Floor, * Boston, MA 02110-1301 USA */ /** * SECTION:gstvaapidecoder_vc1 * @short_description: VC-1 decoder */ #include "sysdeps.h" #include #include #include "gstvaapidecoder_vc1.h" #include "gstvaapidecoder_objects.h" #include "gstvaapidecoder_priv.h" #include "gstvaapidisplay_priv.h" #include "gstvaapiobject_priv.h" #define DEBUG 1 #include "gstvaapidebug.h" G_DEFINE_TYPE(GstVaapiDecoderVC1, gst_vaapi_decoder_vc1, GST_VAAPI_TYPE_DECODER) #define GST_VAAPI_DECODER_VC1_GET_PRIVATE(obj) \ (G_TYPE_INSTANCE_GET_PRIVATE((obj), \ GST_VAAPI_TYPE_DECODER_VC1, \ GstVaapiDecoderVC1Private)) struct _GstVaapiDecoderVC1Private { GstVaapiProfile profile; guint width; guint height; guint fps_n; guint fps_d; GstVC1SeqHdr seq_hdr; GstVC1EntryPointHdr entrypoint_hdr; GstVC1FrameHdr frame_hdr; GstVC1BitPlanes *bitplanes; GstVaapiPicture *current_picture; GstVaapiPicture *next_picture; GstVaapiPicture *prev_picture; GstAdapter *adapter; GstBuffer *sub_buffer; guint8 *rbdu_buffer; guint rbdu_buffer_size; guint is_constructed : 1; guint is_opened : 1; guint is_first_field : 1; guint has_entrypoint : 1; guint size_changed : 1; guint profile_changed : 1; guint closed_entry : 1; guint broken_link : 1; }; static GstVaapiDecoderStatus get_status(GstVC1ParserResult result) { GstVaapiDecoderStatus status; switch (result) { case GST_VC1_PARSER_OK: status = GST_VAAPI_DECODER_STATUS_SUCCESS; break; case GST_VC1_PARSER_NO_BDU_END: status = GST_VAAPI_DECODER_STATUS_ERROR_NO_DATA; break; case GST_VC1_PARSER_ERROR: status = GST_VAAPI_DECODER_STATUS_ERROR_BITSTREAM_PARSER; break; default: status = GST_VAAPI_DECODER_STATUS_ERROR_UNKNOWN; break; } return status; } static void gst_vaapi_decoder_vc1_close(GstVaapiDecoderVC1 *decoder) { GstVaapiDecoderVC1Private * const priv = decoder->priv; gst_vaapi_picture_replace(&priv->current_picture, NULL); gst_vaapi_picture_replace(&priv->next_picture, NULL); gst_vaapi_picture_replace(&priv->prev_picture, NULL); if (priv->sub_buffer) { gst_buffer_unref(priv->sub_buffer); priv->sub_buffer = NULL; } if (priv->bitplanes) { gst_vc1_bitplanes_free(priv->bitplanes); priv->bitplanes = NULL; } if (priv->adapter) { gst_adapter_clear(priv->adapter); g_object_unref(priv->adapter); priv->adapter = NULL; } } static gboolean gst_vaapi_decoder_vc1_open(GstVaapiDecoderVC1 *decoder, GstBuffer *buffer) { GstVaapiDecoderVC1Private * const priv = decoder->priv; gst_vaapi_decoder_vc1_close(decoder); priv->adapter = gst_adapter_new(); if (!priv->adapter) return FALSE; priv->bitplanes = gst_vc1_bitplanes_new(); if (!priv->bitplanes) return FALSE; return TRUE; } static void gst_vaapi_decoder_vc1_destroy(GstVaapiDecoderVC1 *decoder) { GstVaapiDecoderVC1Private * const priv = decoder->priv; gst_vaapi_decoder_vc1_close(decoder); if (priv->rbdu_buffer) { g_free(priv->rbdu_buffer); priv->rbdu_buffer = NULL; priv->rbdu_buffer_size = 0; } } static gboolean gst_vaapi_decoder_vc1_create(GstVaapiDecoderVC1 *decoder) { if (!GST_VAAPI_DECODER_CODEC(decoder)) return FALSE; return TRUE; } static GstVaapiDecoderStatus ensure_context(GstVaapiDecoderVC1 *decoder) { GstVaapiDecoderVC1Private * const priv = decoder->priv; GstVaapiProfile profiles[2]; GstVaapiEntrypoint entrypoint = GST_VAAPI_ENTRYPOINT_VLD; guint i, n_profiles = 0; gboolean reset_context = FALSE; if (priv->profile_changed) { GST_DEBUG("profile changed"); priv->profile_changed = FALSE; reset_context = TRUE; profiles[n_profiles++] = priv->profile; if (priv->profile == GST_VAAPI_PROFILE_VC1_SIMPLE) profiles[n_profiles++] = GST_VAAPI_PROFILE_VC1_MAIN; for (i = 0; i < n_profiles; i++) { if (gst_vaapi_display_has_decoder(GST_VAAPI_DECODER_DISPLAY(decoder), profiles[i], entrypoint)) break; } if (i == n_profiles) return GST_VAAPI_DECODER_STATUS_ERROR_UNSUPPORTED_PROFILE; priv->profile = profiles[i]; } if (priv->size_changed) { GST_DEBUG("size changed"); priv->size_changed = FALSE; reset_context = TRUE; } if (reset_context) { GstVaapiContextInfo info; info.profile = priv->profile; info.entrypoint = entrypoint; info.width = priv->width; info.height = priv->height; info.ref_frames = 2; reset_context = gst_vaapi_decoder_ensure_context( GST_VAAPI_DECODER(decoder), &info ); if (!reset_context) return GST_VAAPI_DECODER_STATUS_ERROR_UNKNOWN; } return GST_VAAPI_DECODER_STATUS_SUCCESS; } static inline GstVaapiDecoderStatus render_picture(GstVaapiDecoderVC1 *decoder, GstVaapiPicture *picture) { if (!gst_vaapi_picture_output(picture)) return GST_VAAPI_DECODER_STATUS_ERROR_ALLOCATION_FAILED; return GST_VAAPI_DECODER_STATUS_SUCCESS; } static GstVaapiDecoderStatus decode_current_picture(GstVaapiDecoderVC1 *decoder) { GstVaapiDecoderVC1Private * const priv = decoder->priv; GstVaapiPicture * const picture = priv->current_picture; GstVaapiDecoderStatus status = GST_VAAPI_DECODER_STATUS_SUCCESS; if (picture) { if (!gst_vaapi_picture_decode(picture)) status = GST_VAAPI_DECODER_STATUS_ERROR_UNKNOWN; if (!GST_VAAPI_PICTURE_IS_REFERENCE(picture)) { if (priv->prev_picture && priv->next_picture) status = render_picture(decoder, picture); } gst_vaapi_picture_replace(&priv->current_picture, NULL); } return status; } static GstVaapiDecoderStatus decode_sequence(GstVaapiDecoderVC1 *decoder, GstVC1BDU *rbdu, GstVC1BDU *ebdu) { GstVaapiDecoder * const base_decoder = GST_VAAPI_DECODER(decoder); GstVaapiDecoderVC1Private * const priv = decoder->priv; GstVC1SeqHdr * const seq_hdr = &priv->seq_hdr; GstVC1AdvancedSeqHdr * const adv_hdr = &seq_hdr->advanced; GstVC1SeqStructC * const structc = &seq_hdr->struct_c; GstVC1ParserResult result; GstVaapiProfile profile; guint width, height, fps_n, fps_d; result = gst_vc1_parse_sequence_header( rbdu->data + rbdu->offset, rbdu->size, seq_hdr ); if (result != GST_VC1_PARSER_OK) { GST_DEBUG("failed to parse sequence layer"); return get_status(result); } priv->has_entrypoint = FALSE; /* Validate profile */ switch (seq_hdr->profile) { case GST_VC1_PROFILE_SIMPLE: case GST_VC1_PROFILE_MAIN: case GST_VC1_PROFILE_ADVANCED: break; default: GST_DEBUG("unsupported profile %d", seq_hdr->profile); return GST_VAAPI_DECODER_STATUS_ERROR_UNSUPPORTED_PROFILE; } fps_n = 0; fps_d = 0; switch (seq_hdr->profile) { case GST_VC1_PROFILE_SIMPLE: case GST_VC1_PROFILE_MAIN: if (structc->wmvp) { fps_n = structc->framerate; fps_d = 1; } break; case GST_VC1_PROFILE_ADVANCED: if (adv_hdr->display_ext && adv_hdr->framerate_flag) { if (adv_hdr->framerateind) { // 6.1.14.4.4 - Frame Rate Explicit fps_n = adv_hdr->framerateexp + 1; fps_d = 32; } else { // 6.1.14.4.2 - Frame Rate Numerator static const guint frameratenr_table[] = { [1] = 24000, [2] = 25000, [3] = 30000, [4] = 50000, [5] = 60000, [6] = 48000, [7] = 72000 }; // 6.1.14.4.3 - Frame Rate Denominator static const guint frameratedr_table[] = { [1] = 1000, [2] = 1001 }; if (adv_hdr->frameratenr < 1 || adv_hdr->frameratenr > 7) { GST_DEBUG("unsupported FRAMERATENR value"); return GST_VAAPI_DECODER_STATUS_ERROR_BITSTREAM_PARSER; } fps_n = frameratenr_table[adv_hdr->frameratenr]; if (adv_hdr->frameratedr < 1 || adv_hdr->frameratedr > 2) { GST_DEBUG("unsupported FRAMERATEDR value"); return GST_VAAPI_DECODER_STATUS_ERROR_BITSTREAM_PARSER; } fps_d = frameratedr_table[adv_hdr->frameratedr]; } } break; default: g_assert(0 && "XXX: we already validated the profile above"); break; } if (fps_n && fps_d) { priv->fps_n = fps_n; priv->fps_d = fps_d; gst_vaapi_decoder_set_framerate(base_decoder, priv->fps_n, priv->fps_d); } switch (seq_hdr->profile) { case GST_VC1_PROFILE_SIMPLE: case GST_VC1_PROFILE_MAIN: width = seq_hdr->struct_c.coded_width; height = seq_hdr->struct_c.coded_height; break; case GST_VC1_PROFILE_ADVANCED: width = seq_hdr->advanced.max_coded_width; height = seq_hdr->advanced.max_coded_height; break; default: g_assert(0 && "XXX: we already validated the profile above"); break; } if (priv->width != width) { priv->width = width; priv->size_changed = TRUE; } if (priv->height != height) { priv->height = height; priv->size_changed = TRUE; } switch (seq_hdr->profile) { case GST_VC1_PROFILE_SIMPLE: profile = GST_VAAPI_PROFILE_VC1_SIMPLE; break; case GST_VC1_PROFILE_MAIN: profile = GST_VAAPI_PROFILE_VC1_MAIN; break; case GST_VC1_PROFILE_ADVANCED: profile = GST_VAAPI_PROFILE_VC1_ADVANCED; break; default: g_assert(0 && "XXX: we already validated the profile above"); break; } if (priv->profile != profile) { priv->profile = profile; priv->profile_changed = TRUE; } return GST_VAAPI_DECODER_STATUS_SUCCESS; } static GstVaapiDecoderStatus decode_sequence_end(GstVaapiDecoderVC1 *decoder) { GstVaapiDecoderVC1Private * const priv = decoder->priv; GstVaapiDecoderStatus status; if (priv->current_picture) { status = decode_current_picture(decoder); if (status != GST_VAAPI_DECODER_STATUS_SUCCESS) return status; status = render_picture(decoder, priv->current_picture); if (status != GST_VAAPI_DECODER_STATUS_SUCCESS) return status; } if (priv->next_picture) { status = render_picture(decoder, priv->next_picture); if (status != GST_VAAPI_DECODER_STATUS_SUCCESS) return status; } return GST_VAAPI_DECODER_STATUS_END_OF_STREAM; } static GstVaapiDecoderStatus decode_entry_point(GstVaapiDecoderVC1 *decoder, GstVC1BDU *rbdu, GstVC1BDU *ebdu) { GstVaapiDecoderVC1Private * const priv = decoder->priv; GstVC1SeqHdr * const seq_hdr = &priv->seq_hdr; GstVC1EntryPointHdr * const entrypoint_hdr = &priv->entrypoint_hdr; GstVC1ParserResult result; result = gst_vc1_parse_entry_point_header( rbdu->data + rbdu->offset, rbdu->size, entrypoint_hdr, seq_hdr ); if (result != GST_VC1_PARSER_OK) { GST_DEBUG("failed to parse entrypoint layer"); return get_status(result); } if (entrypoint_hdr->coded_size_flag) { priv->width = entrypoint_hdr->coded_width; priv->height = entrypoint_hdr->coded_height; priv->size_changed = TRUE; } priv->has_entrypoint = TRUE; priv->closed_entry = entrypoint_hdr->closed_entry; priv->broken_link = entrypoint_hdr->broken_link; return GST_VAAPI_DECODER_STATUS_SUCCESS; } /* Reconstruct bitstream PTYPE (7.1.1.4, index into Table-35) */ static guint get_PTYPE(guint ptype) { switch (ptype) { case GST_VC1_PICTURE_TYPE_I: return 0; case GST_VC1_PICTURE_TYPE_P: return 1; case GST_VC1_PICTURE_TYPE_B: return 2; case GST_VC1_PICTURE_TYPE_BI: return 3; } return 4; /* skipped P-frame */ } /* Reconstruct bitstream BFRACTION (7.1.1.14, index into Table-40) */ static guint get_BFRACTION(guint bfraction) { guint i; static const struct { guint16 index; guint16 value; } bfraction_map[] = { { 0, GST_VC1_BFRACTION_BASIS / 2 }, { 1, GST_VC1_BFRACTION_BASIS / 3 }, { 2, (GST_VC1_BFRACTION_BASIS * 2) / 3 }, { 3, GST_VC1_BFRACTION_BASIS / 4 }, { 4, (GST_VC1_BFRACTION_BASIS * 3) / 4 }, { 5, GST_VC1_BFRACTION_BASIS / 5 }, { 6, (GST_VC1_BFRACTION_BASIS * 2) / 5 }, { 7, (GST_VC1_BFRACTION_BASIS * 3) / 5 }, { 8, (GST_VC1_BFRACTION_BASIS * 4) / 5 }, { 9, GST_VC1_BFRACTION_BASIS / 6 }, { 10, (GST_VC1_BFRACTION_BASIS * 5) / 6 }, { 11, GST_VC1_BFRACTION_BASIS / 7 }, { 12, (GST_VC1_BFRACTION_BASIS * 2) / 7 }, { 13, (GST_VC1_BFRACTION_BASIS * 3) / 7 }, { 14, (GST_VC1_BFRACTION_BASIS * 4) / 7 }, { 15, (GST_VC1_BFRACTION_BASIS * 5) / 7 }, { 16, (GST_VC1_BFRACTION_BASIS * 6) / 7 }, { 17, GST_VC1_BFRACTION_BASIS / 8 }, { 18, (GST_VC1_BFRACTION_BASIS * 3) / 8 }, { 19, (GST_VC1_BFRACTION_BASIS * 5) / 8 }, { 20, (GST_VC1_BFRACTION_BASIS * 7) / 8 }, { 21, GST_VC1_BFRACTION_RESERVED }, { 22, GST_VC1_BFRACTION_PTYPE_BI } }; if (!bfraction) return 0; for (i = 0; i < G_N_ELEMENTS(bfraction_map); i++) { if (bfraction_map[i].value == bfraction) return bfraction_map[i].index; } return 21; /* RESERVED */ } /* Translate GStreamer MV modes to VA-API */ static guint get_VAMvModeVC1(guint mvmode) { switch (mvmode) { case GST_VC1_MVMODE_1MV_HPEL_BILINEAR: return VAMvMode1MvHalfPelBilinear; case GST_VC1_MVMODE_1MV: return VAMvMode1Mv; case GST_VC1_MVMODE_1MV_HPEL: return VAMvMode1MvHalfPel; case GST_VC1_MVMODE_MIXED_MV: return VAMvModeMixedMv; case GST_VC1_MVMODE_INTENSITY_COMP: return VAMvModeIntensityCompensation; } return 0; } /* Reconstruct bitstream MVMODE (7.1.1.32) */ static guint get_MVMODE(GstVC1FrameHdr *frame_hdr) { guint mvmode; if (frame_hdr->profile == GST_VC1_PROFILE_ADVANCED) mvmode = frame_hdr->pic.advanced.mvmode; else mvmode = frame_hdr->pic.simple.mvmode; if (frame_hdr->ptype == GST_VC1_PICTURE_TYPE_P || frame_hdr->ptype == GST_VC1_PICTURE_TYPE_B) return get_VAMvModeVC1(mvmode); return 0; } /* Reconstruct bitstream MVMODE2 (7.1.1.33) */ static guint get_MVMODE2(GstVC1FrameHdr *frame_hdr) { guint mvmode, mvmode2; if (frame_hdr->profile == GST_VC1_PROFILE_ADVANCED) { mvmode = frame_hdr->pic.advanced.mvmode; mvmode2 = frame_hdr->pic.advanced.mvmode2; } else { mvmode = frame_hdr->pic.simple.mvmode; mvmode2 = frame_hdr->pic.simple.mvmode2; } if (frame_hdr->ptype == GST_VC1_PICTURE_TYPE_P && mvmode == GST_VC1_MVMODE_INTENSITY_COMP) return get_VAMvModeVC1(mvmode2); return 0; } static inline int has_MVTYPEMB_bitplane(GstVaapiDecoderVC1 *decoder) { GstVaapiDecoderVC1Private * const priv = decoder->priv; GstVC1SeqHdr * const seq_hdr = &priv->seq_hdr; GstVC1FrameHdr * const frame_hdr = &priv->frame_hdr; guint mvmode, mvmode2; if (seq_hdr->profile == GST_VC1_PROFILE_ADVANCED) { GstVC1PicAdvanced * const pic = &frame_hdr->pic.advanced; if (pic->mvtypemb) return 0; mvmode = pic->mvmode; mvmode2 = pic->mvmode2; } else { GstVC1PicSimpleMain * const pic = &frame_hdr->pic.simple; if (pic->mvtypemb) return 0; mvmode = pic->mvmode; mvmode2 = pic->mvmode2; } return (frame_hdr->ptype == GST_VC1_PICTURE_TYPE_P && (mvmode == GST_VC1_MVMODE_MIXED_MV || (mvmode == GST_VC1_MVMODE_INTENSITY_COMP && mvmode2 == GST_VC1_MVMODE_MIXED_MV))); } static inline int has_SKIPMB_bitplane(GstVaapiDecoderVC1 *decoder) { GstVaapiDecoderVC1Private * const priv = decoder->priv; GstVC1SeqHdr * const seq_hdr = &priv->seq_hdr; GstVC1FrameHdr * const frame_hdr = &priv->frame_hdr; if (seq_hdr->profile == GST_VC1_PROFILE_ADVANCED) { GstVC1PicAdvanced * const pic = &frame_hdr->pic.advanced; if (pic->skipmb) return 0; } else { GstVC1PicSimpleMain * const pic = &frame_hdr->pic.simple; if (pic->skipmb) return 0; } return (frame_hdr->ptype == GST_VC1_PICTURE_TYPE_P || frame_hdr->ptype == GST_VC1_PICTURE_TYPE_B); } static inline int has_DIRECTMB_bitplane(GstVaapiDecoderVC1 *decoder) { GstVaapiDecoderVC1Private * const priv = decoder->priv; GstVC1SeqHdr * const seq_hdr = &priv->seq_hdr; GstVC1FrameHdr * const frame_hdr = &priv->frame_hdr; if (seq_hdr->profile == GST_VC1_PROFILE_ADVANCED) { GstVC1PicAdvanced * const pic = &frame_hdr->pic.advanced; if (pic->directmb) return 0; } else { GstVC1PicSimpleMain * const pic = &frame_hdr->pic.simple; if (pic->directmb) return 0; } return frame_hdr->ptype == GST_VC1_PICTURE_TYPE_B; } static inline int has_ACPRED_bitplane(GstVaapiDecoderVC1 *decoder) { GstVaapiDecoderVC1Private * const priv = decoder->priv; GstVC1SeqHdr * const seq_hdr = &priv->seq_hdr; GstVC1FrameHdr * const frame_hdr = &priv->frame_hdr; GstVC1PicAdvanced * const pic = &frame_hdr->pic.advanced; if (seq_hdr->profile != GST_VC1_PROFILE_ADVANCED) return 0; if (pic->acpred) return 0; return (frame_hdr->ptype == GST_VC1_PICTURE_TYPE_I || frame_hdr->ptype == GST_VC1_PICTURE_TYPE_BI); } static inline int has_OVERFLAGS_bitplane(GstVaapiDecoderVC1 *decoder) { GstVaapiDecoderVC1Private * const priv = decoder->priv; GstVC1SeqHdr * const seq_hdr = &priv->seq_hdr; GstVC1EntryPointHdr * const entrypoint_hdr = &priv->entrypoint_hdr; GstVC1FrameHdr * const frame_hdr = &priv->frame_hdr; GstVC1PicAdvanced * const pic = &frame_hdr->pic.advanced; if (seq_hdr->profile != GST_VC1_PROFILE_ADVANCED) return 0; if (pic->overflags) return 0; return ((frame_hdr->ptype == GST_VC1_PICTURE_TYPE_I || frame_hdr->ptype == GST_VC1_PICTURE_TYPE_BI) && (entrypoint_hdr->overlap && frame_hdr->pquant <= 8) && pic->condover == GST_VC1_CONDOVER_SELECT); } static inline void pack_bitplanes(GstVaapiBitPlane *bitplane, guint n, const guint8 *bitplanes[3], guint x, guint y, guint stride) { const guint dst_index = n / 2; const guint src_index = y * stride + x; guint8 v = 0; if (bitplanes[0]) v |= bitplanes[0][src_index]; if (bitplanes[1]) v |= bitplanes[1][src_index] << 1; if (bitplanes[2]) v |= bitplanes[2][src_index] << 2; bitplane->data[dst_index] = (bitplane->data[dst_index] << 4) | v; } static gboolean fill_picture_structc(GstVaapiDecoderVC1 *decoder, GstVaapiPicture *picture) { GstVaapiDecoderVC1Private * const priv = decoder->priv; VAPictureParameterBufferVC1 * const pic_param = picture->param; GstVC1SeqStructC * const structc = &priv->seq_hdr.struct_c; GstVC1FrameHdr * const frame_hdr = &priv->frame_hdr; GstVC1PicSimpleMain * const pic = &frame_hdr->pic.simple; /* Fill in VAPictureParameterBufferVC1 (simple/main profile bits) */ pic_param->sequence_fields.bits.finterpflag = structc->finterpflag; pic_param->sequence_fields.bits.multires = structc->multires; pic_param->sequence_fields.bits.overlap = structc->overlap; pic_param->sequence_fields.bits.syncmarker = structc->syncmarker; pic_param->sequence_fields.bits.rangered = structc->rangered; pic_param->sequence_fields.bits.max_b_frames = structc->maxbframes; pic_param->conditional_overlap_flag = 0; /* advanced profile only */ pic_param->fast_uvmc_flag = structc->fastuvmc; pic_param->b_picture_fraction = get_BFRACTION(pic->bfraction); pic_param->cbp_table = pic->cbptab; pic_param->mb_mode_table = 0; /* XXX: interlaced frame */ pic_param->range_reduction_frame = pic->rangeredfrm; pic_param->rounding_control = 0; /* advanced profile only */ pic_param->post_processing = 0; /* advanced profile only */ pic_param->picture_resolution_index = pic->respic; pic_param->luma_scale = pic->lumscale; pic_param->luma_shift = pic->lumshift; pic_param->raw_coding.flags.mv_type_mb = pic->mvtypemb; pic_param->raw_coding.flags.direct_mb = pic->directmb; pic_param->raw_coding.flags.skip_mb = pic->skipmb; pic_param->bitplane_present.flags.bp_mv_type_mb = has_MVTYPEMB_bitplane(decoder); pic_param->bitplane_present.flags.bp_direct_mb = has_DIRECTMB_bitplane(decoder); pic_param->bitplane_present.flags.bp_skip_mb = has_SKIPMB_bitplane(decoder); pic_param->mv_fields.bits.mv_table = pic->mvtab; pic_param->mv_fields.bits.extended_mv_flag = structc->extended_mv; pic_param->mv_fields.bits.extended_mv_range = pic->mvrange; pic_param->transform_fields.bits.variable_sized_transform_flag = structc->vstransform; pic_param->transform_fields.bits.mb_level_transform_type_flag = pic->ttmbf; pic_param->transform_fields.bits.frame_level_transform_type = pic->ttfrm; pic_param->transform_fields.bits.transform_ac_codingset_idx2 = pic->transacfrm2; return TRUE; } static gboolean fill_picture_advanced(GstVaapiDecoderVC1 *decoder, GstVaapiPicture *picture) { GstVaapiDecoderVC1Private * const priv = decoder->priv; VAPictureParameterBufferVC1 * const pic_param = picture->param; GstVC1AdvancedSeqHdr * const adv_hdr = &priv->seq_hdr.advanced; GstVC1EntryPointHdr * const entrypoint_hdr = &priv->entrypoint_hdr; GstVC1FrameHdr * const frame_hdr = &priv->frame_hdr; GstVC1PicAdvanced * const pic = &frame_hdr->pic.advanced; if (!priv->has_entrypoint) return FALSE; /* Fill in VAPictureParameterBufferVC1 (advanced profile bits) */ pic_param->sequence_fields.bits.pulldown = adv_hdr->pulldown; pic_param->sequence_fields.bits.interlace = adv_hdr->interlace; pic_param->sequence_fields.bits.tfcntrflag = adv_hdr->tfcntrflag; pic_param->sequence_fields.bits.finterpflag = adv_hdr->finterpflag; pic_param->sequence_fields.bits.psf = adv_hdr->psf; pic_param->sequence_fields.bits.overlap = entrypoint_hdr->overlap; pic_param->entrypoint_fields.bits.broken_link = entrypoint_hdr->broken_link; pic_param->entrypoint_fields.bits.closed_entry = entrypoint_hdr->closed_entry; pic_param->entrypoint_fields.bits.panscan_flag = entrypoint_hdr->panscan_flag; pic_param->entrypoint_fields.bits.loopfilter = entrypoint_hdr->loopfilter; pic_param->conditional_overlap_flag = pic->condover; pic_param->fast_uvmc_flag = entrypoint_hdr->fastuvmc; pic_param->range_mapping_fields.bits.luma_flag = entrypoint_hdr->range_mapy_flag; pic_param->range_mapping_fields.bits.luma = entrypoint_hdr->range_mapy; pic_param->range_mapping_fields.bits.chroma_flag = entrypoint_hdr->range_mapuv_flag; pic_param->range_mapping_fields.bits.chroma = entrypoint_hdr->range_mapuv; pic_param->b_picture_fraction = get_BFRACTION(pic->bfraction); pic_param->cbp_table = pic->cbptab; pic_param->mb_mode_table = 0; /* XXX: interlaced frame */ pic_param->range_reduction_frame = 0; /* simple/main profile only */ pic_param->rounding_control = pic->rndctrl; pic_param->post_processing = pic->postproc; pic_param->picture_resolution_index = 0; /* simple/main profile only */ pic_param->luma_scale = pic->lumscale; pic_param->luma_shift = pic->lumshift; pic_param->picture_fields.bits.frame_coding_mode = pic->fcm; pic_param->picture_fields.bits.top_field_first = pic->tff; pic_param->picture_fields.bits.is_first_field = pic->fcm == 0; /* XXX: interlaced frame */ pic_param->picture_fields.bits.intensity_compensation = pic->mvmode == GST_VC1_MVMODE_INTENSITY_COMP; pic_param->raw_coding.flags.mv_type_mb = pic->mvtypemb; pic_param->raw_coding.flags.direct_mb = pic->directmb; pic_param->raw_coding.flags.skip_mb = pic->skipmb; pic_param->raw_coding.flags.ac_pred = pic->acpred; pic_param->raw_coding.flags.overflags = pic->overflags; pic_param->bitplane_present.flags.bp_mv_type_mb = has_MVTYPEMB_bitplane(decoder); pic_param->bitplane_present.flags.bp_direct_mb = has_DIRECTMB_bitplane(decoder); pic_param->bitplane_present.flags.bp_skip_mb = has_SKIPMB_bitplane(decoder); pic_param->bitplane_present.flags.bp_ac_pred = has_ACPRED_bitplane(decoder); pic_param->bitplane_present.flags.bp_overflags = has_OVERFLAGS_bitplane(decoder); pic_param->reference_fields.bits.reference_distance_flag = entrypoint_hdr->refdist_flag; pic_param->mv_fields.bits.mv_table = pic->mvtab; pic_param->mv_fields.bits.extended_mv_flag = entrypoint_hdr->extended_mv; pic_param->mv_fields.bits.extended_mv_range = pic->mvrange; pic_param->mv_fields.bits.extended_dmv_flag = entrypoint_hdr->extended_dmv; pic_param->pic_quantizer_fields.bits.dquant = entrypoint_hdr->dquant; pic_param->pic_quantizer_fields.bits.quantizer = entrypoint_hdr->quantizer; pic_param->transform_fields.bits.variable_sized_transform_flag = entrypoint_hdr->vstransform; pic_param->transform_fields.bits.mb_level_transform_type_flag = pic->ttmbf; pic_param->transform_fields.bits.frame_level_transform_type = pic->ttfrm; pic_param->transform_fields.bits.transform_ac_codingset_idx2 = pic->transacfrm2; return TRUE; } static gboolean fill_picture(GstVaapiDecoderVC1 *decoder, GstVaapiPicture *picture) { GstVaapiDecoderVC1Private * const priv = decoder->priv; VAPictureParameterBufferVC1 * const pic_param = picture->param; GstVC1SeqHdr * const seq_hdr = &priv->seq_hdr; GstVC1FrameHdr * const frame_hdr = &priv->frame_hdr; /* Fill in VAPictureParameterBufferVC1 (common fields) */ pic_param->forward_reference_picture = VA_INVALID_ID; pic_param->backward_reference_picture = VA_INVALID_ID; pic_param->inloop_decoded_picture = VA_INVALID_ID; pic_param->sequence_fields.value = 0; #if VA_CHECK_VERSION(0,32,0) pic_param->sequence_fields.bits.profile = seq_hdr->profile; #endif pic_param->coded_width = priv->width; pic_param->coded_height = priv->height; pic_param->entrypoint_fields.value = 0; pic_param->range_mapping_fields.value = 0; pic_param->picture_fields.value = 0; pic_param->picture_fields.bits.picture_type = get_PTYPE(frame_hdr->ptype); pic_param->raw_coding.value = 0; pic_param->bitplane_present.value = 0; pic_param->reference_fields.value = 0; pic_param->mv_fields.value = 0; pic_param->mv_fields.bits.mv_mode = get_MVMODE(frame_hdr); pic_param->mv_fields.bits.mv_mode2 = get_MVMODE2(frame_hdr); pic_param->pic_quantizer_fields.value = 0; pic_param->pic_quantizer_fields.bits.half_qp = frame_hdr->halfqp; pic_param->pic_quantizer_fields.bits.pic_quantizer_scale = frame_hdr->pquant; pic_param->pic_quantizer_fields.bits.pic_quantizer_type = frame_hdr->pquantizer; pic_param->pic_quantizer_fields.bits.dq_frame = frame_hdr->vopdquant.dquantfrm; pic_param->pic_quantizer_fields.bits.dq_profile = frame_hdr->vopdquant.dqprofile; pic_param->pic_quantizer_fields.bits.dq_sb_edge = frame_hdr->vopdquant.dqsbedge; pic_param->pic_quantizer_fields.bits.dq_db_edge = frame_hdr->vopdquant.dqsbedge; pic_param->pic_quantizer_fields.bits.dq_binary_level = frame_hdr->vopdquant.dqbilevel; pic_param->pic_quantizer_fields.bits.alt_pic_quantizer = frame_hdr->vopdquant.altpquant; pic_param->transform_fields.value = 0; pic_param->transform_fields.bits.transform_ac_codingset_idx1 = frame_hdr->transacfrm; pic_param->transform_fields.bits.intra_transform_dc_table = frame_hdr->transdctab; if (seq_hdr->profile == GST_VC1_PROFILE_ADVANCED) { if (!fill_picture_advanced(decoder, picture)) return FALSE; } else { if (!fill_picture_structc(decoder, picture)) return FALSE; } switch (picture->type) { case GST_VAAPI_PICTURE_TYPE_B: if (priv->next_picture) pic_param->backward_reference_picture = priv->next_picture->surface_id; // fall-through case GST_VAAPI_PICTURE_TYPE_P: if (priv->prev_picture) pic_param->forward_reference_picture = priv->prev_picture->surface_id; break; default: break; } if (pic_param->bitplane_present.value) { const guint8 *bitplanes[3]; guint x, y, n; switch (picture->type) { case GST_VAAPI_PICTURE_TYPE_P: bitplanes[0] = pic_param->bitplane_present.flags.bp_direct_mb ? priv->bitplanes->directmb : NULL; bitplanes[1] = pic_param->bitplane_present.flags.bp_skip_mb ? priv->bitplanes->skipmb : NULL; bitplanes[2] = pic_param->bitplane_present.flags.bp_mv_type_mb ? priv->bitplanes->mvtypemb : NULL; break; case GST_VAAPI_PICTURE_TYPE_B: bitplanes[0] = pic_param->bitplane_present.flags.bp_direct_mb ? priv->bitplanes->directmb : NULL; bitplanes[1] = pic_param->bitplane_present.flags.bp_skip_mb ? priv->bitplanes->skipmb : NULL; bitplanes[2] = NULL; /* XXX: interlaced frame (FORWARD plane) */ break; case GST_VAAPI_PICTURE_TYPE_BI: case GST_VAAPI_PICTURE_TYPE_I: bitplanes[0] = NULL; /* XXX: interlaced frame (FIELDTX plane) */ bitplanes[1] = pic_param->bitplane_present.flags.bp_ac_pred ? priv->bitplanes->acpred : NULL; bitplanes[2] = pic_param->bitplane_present.flags.bp_overflags ? priv->bitplanes->overflags : NULL; break; default: bitplanes[0] = NULL; bitplanes[1] = NULL; bitplanes[2] = NULL; break; } picture->bitplane = GST_VAAPI_BITPLANE_NEW( decoder, (seq_hdr->mb_width * seq_hdr->mb_height + 1) / 2 ); if (!picture->bitplane) return FALSE; n = 0; for (y = 0; y < seq_hdr->mb_height; y++) for (x = 0; x < seq_hdr->mb_width; x++, n++) pack_bitplanes(picture->bitplane, n, bitplanes, x, y, seq_hdr->mb_stride); if (n & 1) /* move last nibble to the high order */ picture->bitplane->data[n/2] <<= 4; } return TRUE; } static GstVaapiDecoderStatus decode_frame(GstVaapiDecoderVC1 *decoder, GstVC1BDU *rbdu, GstVC1BDU *ebdu) { GstVaapiDecoderVC1Private * const priv = decoder->priv; GstVC1SeqHdr * const seq_hdr = &priv->seq_hdr; GstVC1FrameHdr * const frame_hdr = &priv->frame_hdr; GstVC1ParserResult result; GstVaapiPicture *picture; GstVaapiSlice *slice; GstVaapiDecoderStatus status; VASliceParameterBufferVC1 *slice_param; GstClockTime pts; status = ensure_context(decoder); if (status != GST_VAAPI_DECODER_STATUS_SUCCESS) { GST_DEBUG("failed to reset context"); return status; } if (priv->current_picture) { status = decode_current_picture(decoder); if (status != GST_VAAPI_DECODER_STATUS_SUCCESS) return status; } priv->current_picture = GST_VAAPI_PICTURE_NEW(VC1, decoder); if (!priv->current_picture) { GST_DEBUG("failed to allocate picture"); return GST_VAAPI_DECODER_STATUS_ERROR_ALLOCATION_FAILED; } picture = priv->current_picture; if (!gst_vc1_bitplanes_ensure_size(priv->bitplanes, seq_hdr)) { GST_DEBUG("failed to allocate bitplanes"); return GST_VAAPI_DECODER_STATUS_ERROR_ALLOCATION_FAILED; } memset(frame_hdr, 0, sizeof(*frame_hdr)); result = gst_vc1_parse_frame_header( rbdu->data + rbdu->offset, rbdu->size, frame_hdr, seq_hdr, priv->bitplanes ); if (result != GST_VC1_PARSER_OK) { GST_DEBUG("failed to parse frame layer"); return get_status(result); } switch (frame_hdr->ptype) { case GST_VC1_PICTURE_TYPE_I: picture->type = GST_VAAPI_PICTURE_TYPE_I; GST_VAAPI_PICTURE_FLAG_SET(picture, GST_VAAPI_PICTURE_FLAG_REFERENCE); break; case GST_VC1_PICTURE_TYPE_SKIPPED: case GST_VC1_PICTURE_TYPE_P: picture->type = GST_VAAPI_PICTURE_TYPE_P; GST_VAAPI_PICTURE_FLAG_SET(picture, GST_VAAPI_PICTURE_FLAG_REFERENCE); break; case GST_VC1_PICTURE_TYPE_B: picture->type = GST_VAAPI_PICTURE_TYPE_B; break; case GST_VC1_PICTURE_TYPE_BI: picture->type = GST_VAAPI_PICTURE_TYPE_BI; break; default: GST_DEBUG("unsupported picture type %d", frame_hdr->ptype); return GST_VAAPI_DECODER_STATUS_ERROR_UNKNOWN; } /* Update presentation time */ pts = gst_adapter_prev_timestamp(priv->adapter, NULL); picture->pts = pts; /* Update reference pictures */ if (GST_VAAPI_PICTURE_IS_REFERENCE(picture)) { if (priv->next_picture) status = render_picture(decoder, priv->next_picture); gst_vaapi_picture_replace(&priv->prev_picture, priv->next_picture); gst_vaapi_picture_replace(&priv->next_picture, picture); } if (!fill_picture(decoder, picture)) return GST_VAAPI_DECODER_STATUS_ERROR_UNKNOWN; slice = GST_VAAPI_SLICE_NEW( VC1, decoder, ebdu->data + ebdu->sc_offset, ebdu->size + ebdu->offset - ebdu->sc_offset ); if (!slice) { GST_DEBUG("failed to allocate slice"); return GST_VAAPI_DECODER_STATUS_ERROR_ALLOCATION_FAILED; } gst_vaapi_picture_add_slice(picture, slice); /* Fill in VASliceParameterBufferVC1 */ slice_param = slice->param; slice_param->macroblock_offset = 8 * (ebdu->offset - ebdu->sc_offset) + frame_hdr->header_size; slice_param->slice_vertical_position = 0; /* Decode picture right away, we got the full frame */ return decode_current_picture(decoder); } static gboolean decode_rbdu(GstVaapiDecoderVC1 *decoder, GstVC1BDU *rbdu, GstVC1BDU *ebdu) { GstVaapiDecoderVC1Private * const priv = decoder->priv; guint8 *rbdu_buffer; guint i, j, rbdu_buffer_size; /* BDU are encapsulated in advanced profile mode only */ if (priv->profile != GST_VAAPI_PROFILE_VC1_ADVANCED) { memcpy(rbdu, ebdu, sizeof(*rbdu)); return TRUE; } /* Reallocate unescaped bitstream buffer */ rbdu_buffer = priv->rbdu_buffer; if (!rbdu_buffer || ebdu->size > priv->rbdu_buffer_size) { rbdu_buffer = g_realloc(priv->rbdu_buffer, ebdu->size); if (!rbdu_buffer) return FALSE; priv->rbdu_buffer = rbdu_buffer; priv->rbdu_buffer_size = ebdu->size; } /* Unescape bitstream buffer */ if (ebdu->size < 4) { memcpy(rbdu_buffer, ebdu->data + ebdu->offset, ebdu->size); rbdu_buffer_size = ebdu->size; } else { guint8 * const bdu_buffer = ebdu->data + ebdu->offset; for (i = 0, j = 0; i < ebdu->size; i++) { if (i >= 2 && i < ebdu->size - 1 && bdu_buffer[i - 1] == 0x00 && bdu_buffer[i - 2] == 0x00 && bdu_buffer[i ] == 0x03 && bdu_buffer[i + 1] <= 0x03) i++; rbdu_buffer[j++] = bdu_buffer[i]; } rbdu_buffer_size = j; } /* Reconstruct RBDU */ rbdu->type = ebdu->type; rbdu->size = rbdu_buffer_size; rbdu->sc_offset = 0; rbdu->offset = 0; rbdu->data = rbdu_buffer; return TRUE; } static GstVaapiDecoderStatus decode_ebdu(GstVaapiDecoderVC1 *decoder, GstVC1BDU *ebdu) { GstVaapiDecoderStatus status; GstVC1BDU rbdu; if (!decode_rbdu(decoder, &rbdu, ebdu)) return GST_VAAPI_DECODER_STATUS_ERROR_ALLOCATION_FAILED; switch (ebdu->type) { case GST_VC1_SEQUENCE: status = decode_sequence(decoder, &rbdu, ebdu); break; case GST_VC1_ENTRYPOINT: status = decode_entry_point(decoder, &rbdu, ebdu); break; case GST_VC1_FRAME: status = decode_frame(decoder, &rbdu, ebdu); break; case GST_VC1_SLICE: GST_DEBUG("decode slice"); status = GST_VAAPI_DECODER_STATUS_ERROR_BITSTREAM_PARSER; break; case GST_VC1_END_OF_SEQ: status = decode_sequence_end(decoder); break; default: GST_DEBUG("unsupported BDU type %d", ebdu->type); status = GST_VAAPI_DECODER_STATUS_ERROR_BITSTREAM_PARSER; break; } return status; } static GstVaapiDecoderStatus decode_buffer(GstVaapiDecoderVC1 *decoder, GstBuffer *buffer) { GstVaapiDecoderVC1Private * const priv = decoder->priv; GstVaapiDecoderStatus status; GstVC1ParserResult result; GstVC1BDU ebdu; GstBuffer *codec_data; guchar *buf; guint buf_size, ofs; buf = GST_BUFFER_DATA(buffer); buf_size = GST_BUFFER_SIZE(buffer); if (!buf && buf_size == 0) return decode_sequence_end(decoder); gst_buffer_ref(buffer); gst_adapter_push(priv->adapter, buffer); /* Assume demuxer sends out plain frames if codec-data */ codec_data = GST_VAAPI_DECODER_CODEC_DATA(decoder); if (codec_data && codec_data != buffer) { ebdu.type = GST_VC1_FRAME; ebdu.size = buf_size; ebdu.sc_offset = 0; ebdu.offset = 0; ebdu.data = buf; status = decode_ebdu(decoder, &ebdu); if (gst_adapter_available(priv->adapter) >= buf_size) gst_adapter_flush(priv->adapter, buf_size); return status; } if (priv->sub_buffer) { buffer = gst_buffer_merge(priv->sub_buffer, buffer); if (!buffer) return GST_VAAPI_DECODER_STATUS_ERROR_ALLOCATION_FAILED; gst_buffer_unref(priv->sub_buffer); priv->sub_buffer = NULL; } buf = GST_BUFFER_DATA(buffer); buf_size = GST_BUFFER_SIZE(buffer); ofs = 0; do { result = gst_vc1_identify_next_bdu( buf + ofs, buf_size - ofs, &ebdu ); status = get_status(result); if (status == GST_VAAPI_DECODER_STATUS_ERROR_NO_DATA) { priv->sub_buffer = gst_buffer_create_sub(buffer, ofs, buf_size - ofs); break; } if (status != GST_VAAPI_DECODER_STATUS_SUCCESS) break; ofs += ebdu.offset + ebdu.size; if (gst_adapter_available(priv->adapter) >= ebdu.offset) gst_adapter_flush(priv->adapter, ebdu.offset); status = decode_ebdu(decoder, &ebdu); if (gst_adapter_available(priv->adapter) >= ebdu.size) gst_adapter_flush(priv->adapter, ebdu.size); } while (status == GST_VAAPI_DECODER_STATUS_SUCCESS); return status; } static GstVaapiDecoderStatus decode_codec_data(GstVaapiDecoderVC1 *decoder, GstBuffer *buffer) { GstVaapiDecoderVC1Private * const priv = decoder->priv; GstVC1SeqHdr * const seq_hdr = &priv->seq_hdr; GstVaapiDecoderStatus status; GstVC1ParserResult result; GstVC1BDU ebdu; GstCaps *caps; GstStructure *structure; guchar *buf; guint buf_size, ofs; gint width, height; guint32 format; buf = GST_BUFFER_DATA(buffer); buf_size = GST_BUFFER_SIZE(buffer); if (!buf || buf_size == 0) return GST_VAAPI_DECODER_STATUS_SUCCESS; caps = GST_VAAPI_DECODER_CAST(decoder)->priv->caps; structure = gst_caps_get_structure(caps, 0); if (!gst_structure_get_int(structure, "width", &width) || !gst_structure_get_int(structure, "height", &height)) { GST_DEBUG("failed to parse size from codec-data"); return GST_VAAPI_DECODER_STATUS_ERROR_UNKNOWN; } if (!gst_structure_get_fourcc(structure, "format", &format)) { GST_DEBUG("failed to parse profile from codec-data"); return GST_VAAPI_DECODER_STATUS_ERROR_UNSUPPORTED_CODEC; } /* WMV3 -- expecting sequence header */ if (format == GST_MAKE_FOURCC('W','M','V','3')) { seq_hdr->struct_c.coded_width = width; seq_hdr->struct_c.coded_height = height; ebdu.type = GST_VC1_SEQUENCE; ebdu.size = buf_size; ebdu.sc_offset = 0; ebdu.offset = 0; ebdu.data = buf; return decode_ebdu(decoder, &ebdu); } /* WVC1 -- expecting bitstream data units */ if (format != GST_MAKE_FOURCC('W','V','C','1')) return GST_VAAPI_DECODER_STATUS_ERROR_UNSUPPORTED_PROFILE; seq_hdr->advanced.max_coded_width = width; seq_hdr->advanced.max_coded_height = height; ofs = 0; do { result = gst_vc1_identify_next_bdu( buf + ofs, buf_size - ofs, &ebdu ); switch (result) { case GST_VC1_PARSER_NO_BDU_END: /* Assume the EBDU is complete within codec-data bounds */ ebdu.size = buf_size - ofs - (ebdu.offset - ebdu.sc_offset); // fall-through case GST_VC1_PARSER_OK: status = decode_ebdu(decoder, &ebdu); ofs += ebdu.offset + ebdu.size; break; default: status = get_status(result); break; } } while (status == GST_VAAPI_DECODER_STATUS_SUCCESS && ofs < buf_size); return status; } GstVaapiDecoderStatus gst_vaapi_decoder_vc1_decode(GstVaapiDecoder *base, GstBuffer *buffer) { GstVaapiDecoderVC1 * const decoder = GST_VAAPI_DECODER_VC1(base); GstVaapiDecoderVC1Private * const priv = decoder->priv; GstVaapiDecoderStatus status; GstBuffer *codec_data; g_return_val_if_fail(priv->is_constructed, GST_VAAPI_DECODER_STATUS_ERROR_INIT_FAILED); if (!priv->is_opened) { priv->is_opened = gst_vaapi_decoder_vc1_open(decoder, buffer); if (!priv->is_opened) return GST_VAAPI_DECODER_STATUS_ERROR_UNSUPPORTED_CODEC; codec_data = GST_VAAPI_DECODER_CODEC_DATA(decoder); if (codec_data) { status = decode_codec_data(decoder, codec_data); if (status != GST_VAAPI_DECODER_STATUS_SUCCESS) return status; } } return decode_buffer(decoder, buffer); } static void gst_vaapi_decoder_vc1_finalize(GObject *object) { GstVaapiDecoderVC1 * const decoder = GST_VAAPI_DECODER_VC1(object); gst_vaapi_decoder_vc1_destroy(decoder); G_OBJECT_CLASS(gst_vaapi_decoder_vc1_parent_class)->finalize(object); } static void gst_vaapi_decoder_vc1_constructed(GObject *object) { GstVaapiDecoderVC1 * const decoder = GST_VAAPI_DECODER_VC1(object); GstVaapiDecoderVC1Private * const priv = decoder->priv; GObjectClass *parent_class; parent_class = G_OBJECT_CLASS(gst_vaapi_decoder_vc1_parent_class); if (parent_class->constructed) parent_class->constructed(object); priv->is_constructed = gst_vaapi_decoder_vc1_create(decoder); } static void gst_vaapi_decoder_vc1_class_init(GstVaapiDecoderVC1Class *klass) { GObjectClass * const object_class = G_OBJECT_CLASS(klass); GstVaapiDecoderClass * const decoder_class = GST_VAAPI_DECODER_CLASS(klass); g_type_class_add_private(klass, sizeof(GstVaapiDecoderVC1Private)); object_class->finalize = gst_vaapi_decoder_vc1_finalize; object_class->constructed = gst_vaapi_decoder_vc1_constructed; decoder_class->decode = gst_vaapi_decoder_vc1_decode; } static void gst_vaapi_decoder_vc1_init(GstVaapiDecoderVC1 *decoder) { GstVaapiDecoderVC1Private *priv; priv = GST_VAAPI_DECODER_VC1_GET_PRIVATE(decoder); decoder->priv = priv; priv->width = 0; priv->height = 0; priv->fps_n = 0; priv->fps_d = 0; priv->profile = (GstVaapiProfile)0; priv->current_picture = NULL; priv->next_picture = NULL; priv->prev_picture = NULL; priv->adapter = NULL; priv->sub_buffer = NULL; priv->rbdu_buffer = NULL; priv->rbdu_buffer_size = 0; priv->is_constructed = FALSE; priv->is_opened = FALSE; priv->is_first_field = FALSE; priv->has_entrypoint = FALSE; priv->size_changed = FALSE; priv->profile_changed = FALSE; priv->closed_entry = FALSE; priv->broken_link = FALSE; } /** * gst_vaapi_decoder_vc1_new: * @display: a #GstVaapiDisplay * @caps: a #GstCaps holding codec information * * Creates a new #GstVaapiDecoder for VC-1 decoding. The @caps can * hold extra information like codec-data and pictured coded size. * * Return value: the newly allocated #GstVaapiDecoder object */ GstVaapiDecoder * gst_vaapi_decoder_vc1_new(GstVaapiDisplay *display, GstCaps *caps) { GstVaapiDecoderVC1 *decoder; g_return_val_if_fail(GST_VAAPI_IS_DISPLAY(display), NULL); g_return_val_if_fail(GST_IS_CAPS(caps), NULL); decoder = g_object_new( GST_VAAPI_TYPE_DECODER_VC1, "display", display, "caps", caps, NULL ); if (!decoder->priv->is_constructed) { g_object_unref(decoder); return NULL; } return GST_VAAPI_DECODER_CAST(decoder); }