diff options
Diffstat (limited to 'src/gallium/state_trackers/omx/bellagio/vid_dec_h264.c')
| -rw-r--r-- | src/gallium/state_trackers/omx/bellagio/vid_dec_h264.c | 1032 |
1 files changed, 1032 insertions, 0 deletions
diff --git a/src/gallium/state_trackers/omx/bellagio/vid_dec_h264.c b/src/gallium/state_trackers/omx/bellagio/vid_dec_h264.c new file mode 100644 index 0000000000..7ea71c1046 --- /dev/null +++ b/src/gallium/state_trackers/omx/bellagio/vid_dec_h264.c @@ -0,0 +1,1032 @@ +/************************************************************************** + * + * Copyright 2013 Advanced Micro Devices, Inc. + * All Rights Reserved. + * + * Permission is hereby granted, free of charge, to any person obtaining a + * copy of this software and associated documentation files (the + * "Software"), to deal in the Software without restriction, including + * without limitation the rights to use, copy, modify, merge, publish, + * distribute, sub license, and/or sell copies of the Software, and to + * permit persons to whom the Software is furnished to do so, subject to + * the following conditions: + * + * The above copyright notice and this permission notice (including the + * next paragraph) shall be included in all copies or substantial portions + * of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS + * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. + * IN NO EVENT SHALL THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR + * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, + * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE + * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. + * + **************************************************************************/ + +/* + * Authors: + * Christian König <christian.koenig@amd.com> + * + */ + +#include "pipe/p_video_codec.h" +#include "util/u_memory.h" +#include "util/u_video.h" +#include "vl/vl_rbsp.h" +#include "vl/vl_zscan.h" + +#include "entrypoint.h" +#include "vid_dec.h" + +#define DPB_MAX_SIZE 5 + +struct dpb_list { + struct list_head list; + struct pipe_video_buffer *buffer; + OMX_TICKS timestamp; + int poc; +}; + +static const uint8_t Default_4x4_Intra[16] = { + 6, 13, 20, 28, 13, 20, 28, 32, + 20, 28, 32, 37, 28, 32, 37, 42 +}; + +static const uint8_t Default_4x4_Inter[16] = { + 10, 14, 20, 24, 14, 20, 24, 27, + 20, 24, 27, 30, 24, 27, 30, 34 +}; + +static const uint8_t Default_8x8_Intra[64] = { + 6, 10, 13, 16, 18, 23, 25, 27, + 10, 11, 16, 18, 23, 25, 27, 29, + 13, 16, 18, 23, 25, 27, 29, 31, + 16, 18, 23, 25, 27, 29, 31, 33, + 18, 23, 25, 27, 29, 31, 33, 36, + 23, 25, 27, 29, 31, 33, 36, 38, + 25, 27, 29, 31, 33, 36, 38, 40, + 27, 29, 31, 33, 36, 38, 40, 42 +}; + +static const uint8_t Default_8x8_Inter[64] = { + 9, 13, 15, 17, 19, 21, 22, 24, + 13, 13, 17, 19, 21, 22, 24, 25, + 15, 17, 19, 21, 22, 24, 25, 27, + 17, 19, 21, 22, 24, 25, 27, 28, + 19, 21, 22, 24, 25, 27, 28, 30, + 21, 22, 24, 25, 27, 28, 30, 32, + 22, 24, 25, 27, 28, 30, 32, 33, + 24, 25, 27, 28, 30, 32, 33, 35 +}; + +static void vid_dec_h264_Decode(vid_dec_PrivateType *priv, struct vl_vlc *vlc, unsigned min_bits_left); +static void vid_dec_h264_EndFrame(vid_dec_PrivateType *priv); +static struct pipe_video_buffer *vid_dec_h264_Flush(vid_dec_PrivateType *priv, OMX_TICKS *timestamp); + +void vid_dec_h264_Init(vid_dec_PrivateType *priv) +{ + priv->picture.base.profile = PIPE_VIDEO_PROFILE_MPEG4_AVC_HIGH; + + priv->Decode = vid_dec_h264_Decode; + priv->EndFrame = vid_dec_h264_EndFrame; + priv->Flush = vid_dec_h264_Flush; + + LIST_INITHEAD(&priv->codec_data.h264.dpb_list); + priv->picture.h264.field_order_cnt[0] = priv->picture.h264.field_order_cnt[1] = INT_MAX; + priv->first_buf_in_frame = true; +} + +static void vid_dec_h264_BeginFrame(vid_dec_PrivateType *priv) +{ + //TODO: sane buffer handling + + if (priv->frame_started) + return; + + if (!priv->codec) { + struct pipe_video_codec templat = {}; + omx_base_video_PortType *port; + + port = (omx_base_video_PortType *)priv->ports[OMX_BASE_FILTER_INPUTPORT_INDEX]; + templat.profile = priv->profile; + templat.entrypoint = PIPE_VIDEO_ENTRYPOINT_BITSTREAM; + templat.chroma_format = PIPE_VIDEO_CHROMA_FORMAT_420; + templat.max_references = priv->picture.h264.num_ref_frames; + templat.expect_chunked_decode = true; + templat.width = port->sPortParam.format.video.nFrameWidth; + templat.height = port->sPortParam.format.video.nFrameHeight; + templat.level = priv->picture.h264.pps->sps->level_idc; + + priv->codec = priv->pipe->create_video_codec(priv->pipe, &templat); + } + + vid_dec_NeedTarget(priv); + + if (priv->first_buf_in_frame) + priv->timestamp = priv->timestamps[0]; + priv->first_buf_in_frame = false; + + priv->picture.h264.num_ref_frames = priv->picture.h264.pps->sps->max_num_ref_frames; + + priv->picture.h264.slice_count = 0; + priv->codec->begin_frame(priv->codec, priv->target, &priv->picture.base); + priv->frame_started = true; +} + +static struct pipe_video_buffer *vid_dec_h264_Flush(vid_dec_PrivateType *priv, + OMX_TICKS *timestamp) +{ + struct dpb_list *entry, *result = NULL; + struct pipe_video_buffer *buf; + + /* search for the lowest poc and break on zeros */ + LIST_FOR_EACH_ENTRY(entry, &priv->codec_data.h264.dpb_list, list) { + + if (result && entry->poc == 0) + break; + + if (!result || entry->poc < result->poc) + result = entry; + } + + if (!result) + return NULL; + + buf = result->buffer; + if (timestamp) + *timestamp = result->timestamp; + + --priv->codec_data.h264.dpb_num; + LIST_DEL(&result->list); + FREE(result); + + return buf; +} + +static void vid_dec_h264_EndFrame(vid_dec_PrivateType *priv) +{ + struct dpb_list *entry; + struct pipe_video_buffer *tmp; + bool top_field_first; + OMX_TICKS timestamp; + + if (!priv->frame_started) + return; + + priv->codec->end_frame(priv->codec, priv->target, &priv->picture.base); + priv->frame_started = false; + + // TODO: implement frame number handling + priv->picture.h264.frame_num_list[0] = priv->picture.h264.frame_num; + priv->picture.h264.field_order_cnt_list[0][0] = priv->picture.h264.frame_num; + priv->picture.h264.field_order_cnt_list[0][1] = priv->picture.h264.frame_num; + + top_field_first = priv->picture.h264.field_order_cnt[0] < priv->picture.h264.field_order_cnt[1]; + + if (priv->picture.h264.field_pic_flag && priv->picture.h264.bottom_field_flag != top_field_first) + return; + + /* add the decoded picture to the dpb list */ + entry = CALLOC_STRUCT(dpb_list); + if (!entry) + return; + + priv->first_buf_in_frame = true; + entry->buffer = priv->target; + entry->timestamp = priv->timestamp; + entry->poc = MIN2(priv->picture.h264.field_order_cnt[0], priv->picture.h264.field_order_cnt[1]); + LIST_ADDTAIL(&entry->list, &priv->codec_data.h264.dpb_list); + ++priv->codec_data.h264.dpb_num; + priv->target = NULL; + priv->picture.h264.field_order_cnt[0] = priv->picture.h264.field_order_cnt[1] = INT_MAX; + + if (priv->codec_data.h264.dpb_num <= DPB_MAX_SIZE) + return; + + tmp = priv->in_buffers[0]->pInputPortPrivate; + priv->in_buffers[0]->pInputPortPrivate = vid_dec_h264_Flush(priv, ×tamp); + priv->in_buffers[0]->nTimeStamp = timestamp; + priv->target = tmp; + priv->frame_finished = priv->in_buffers[0]->pInputPortPrivate != NULL; +} + +static void vui_parameters(struct vl_rbsp *rbsp) +{ + // TODO +} + +static void scaling_list(struct vl_rbsp *rbsp, uint8_t *scalingList, unsigned sizeOfScalingList, + const uint8_t *defaultList, const uint8_t *fallbackList) +{ + unsigned lastScale = 8, nextScale = 8; + const int *list; + unsigned i; + + /* (pic|seq)_scaling_list_present_flag[i] */ + if (!vl_rbsp_u(rbsp, 1)) { + if (fallbackList) + memcpy(scalingList, fallbackList, sizeOfScalingList); + return; + } + + list = (sizeOfScalingList == 16) ? vl_zscan_normal_16 : vl_zscan_normal; + for (i = 0; i < sizeOfScalingList; ++i ) { + + if (nextScale != 0) { + signed delta_scale = vl_rbsp_se(rbsp); + nextScale = (lastScale + delta_scale + 256) % 256; + if (i == 0 && nextScale == 0) { + memcpy(scalingList, defaultList, sizeOfScalingList); + return; + } + } + scalingList[list[i]] = nextScale == 0 ? lastScale : nextScale; + lastScale = scalingList[list[i]]; + } +} + +static struct pipe_h264_sps *seq_parameter_set_id(vid_dec_PrivateType *priv, struct vl_rbsp *rbsp) +{ + unsigned id = vl_rbsp_ue(rbsp); + if (id >= ARRAY_SIZE(priv->codec_data.h264.sps)) + return NULL; /* invalid seq_parameter_set_id */ + + return &priv->codec_data.h264.sps[id]; +} + +static void seq_parameter_set(vid_dec_PrivateType *priv, struct vl_rbsp *rbsp) +{ + struct pipe_h264_sps *sps; + unsigned profile_idc, level_idc; + unsigned i; + + /* Sequence parameter set */ + profile_idc = vl_rbsp_u(rbsp, 8); + + /* constraint_set0_flag */ + vl_rbsp_u(rbsp, 1); + + /* constraint_set1_flag */ + vl_rbsp_u(rbsp, 1); + + /* constraint_set2_flag */ + vl_rbsp_u(rbsp, 1); + + /* constraint_set3_flag */ + vl_rbsp_u(rbsp, 1); + + /* constraint_set4_flag */ + vl_rbsp_u(rbsp, 1); + + /* constraint_set5_flag */ + vl_rbsp_u(rbsp, 1); + + /* reserved_zero_2bits */ + vl_rbsp_u(rbsp, 2); + + /* level_idc */ + level_idc = vl_rbsp_u(rbsp, 8); + + sps = seq_parameter_set_id(priv, rbsp); + if (!sps) + return; + + memset(sps, 0, sizeof(*sps)); + memset(sps->ScalingList4x4, 16, sizeof(sps->ScalingList4x4)); + memset(sps->ScalingList8x8, 16, sizeof(sps->ScalingList8x8)); + + sps->level_idc = level_idc; + + if (profile_idc == 100 || profile_idc == 110 || profile_idc == 122 || profile_idc == 244 || + profile_idc == 44 || profile_idc == 83 || profile_idc == 86 || profile_idc == 118 || + profile_idc == 128 || profile_idc == 138) { + + sps->chroma_format_idc = vl_rbsp_ue(rbsp); + + if (sps->chroma_format_idc == 3) + sps->separate_colour_plane_flag = vl_rbsp_u(rbsp, 1); + + sps->bit_depth_luma_minus8 = vl_rbsp_ue(rbsp); + + sps->bit_depth_chroma_minus8 = vl_rbsp_ue(rbsp); + + /* qpprime_y_zero_transform_bypass_flag */ + vl_rbsp_u(rbsp, 1); + + sps->seq_scaling_matrix_present_flag = vl_rbsp_u(rbsp, 1); + if (sps->seq_scaling_matrix_present_flag) { + + scaling_list(rbsp, sps->ScalingList4x4[0], 16, Default_4x4_Intra, Default_4x4_Intra); + scaling_list(rbsp, sps->ScalingList4x4[1], 16, Default_4x4_Intra, sps->ScalingList4x4[0]); + scaling_list(rbsp, sps->ScalingList4x4[2], 16, Default_4x4_Intra, sps->ScalingList4x4[1]); + scaling_list(rbsp, sps->ScalingList4x4[3], 16, Default_4x4_Inter, Default_4x4_Inter); + scaling_list(rbsp, sps->ScalingList4x4[4], 16, Default_4x4_Inter, sps->ScalingList4x4[3]); + scaling_list(rbsp, sps->ScalingList4x4[5], 16, Default_4x4_Inter, sps->ScalingList4x4[4]); + + scaling_list(rbsp, sps->ScalingList8x8[0], 64, Default_8x8_Intra, Default_8x8_Intra); + scaling_list(rbsp, sps->ScalingList8x8[1], 64, Default_8x8_Inter, Default_8x8_Inter); + if (sps->chroma_format_idc == 3) { + scaling_list(rbsp, sps->ScalingList8x8[2], 64, Default_8x8_Intra, sps->ScalingList8x8[0]); + scaling_list(rbsp, sps->ScalingList8x8[3], 64, Default_8x8_Inter, sps->ScalingList8x8[1]); + scaling_list(rbsp, sps->ScalingList8x8[4], 64, Default_8x8_Intra, sps->ScalingList8x8[2]); + scaling_list(rbsp, sps->ScalingList8x8[5], 64, Default_8x8_Inter, sps->ScalingList8x8[3]); + } + } + } else if (profile_idc == 183) + sps->chroma_format_idc = 0; + else + sps->chroma_format_idc = 1; + + sps->log2_max_frame_num_minus4 = vl_rbsp_ue(rbsp); + + sps->pic_order_cnt_type = vl_rbsp_ue(rbsp); + + if (sps->pic_order_cnt_type == 0) + sps->log2_max_pic_order_cnt_lsb_minus4 = vl_rbsp_ue(rbsp); + else if (sps->pic_order_cnt_type == 1) { + sps->delta_pic_order_always_zero_flag = vl_rbsp_u(rbsp, 1); + + sps->offset_for_non_ref_pic = vl_rbsp_se(rbsp); + + sps->offset_for_top_to_bottom_field = vl_rbsp_se(rbsp); + + sps->num_ref_frames_in_pic_order_cnt_cycle = vl_rbsp_ue(rbsp); + + for (i = 0; i < sps->num_ref_frames_in_pic_order_cnt_cycle; ++i) + sps->offset_for_ref_frame[i] = vl_rbsp_se(rbsp); + } + + sps->max_num_ref_frames = vl_rbsp_ue(rbsp); + + /* gaps_in_frame_num_value_allowed_flag */ + vl_rbsp_u(rbsp, 1); + + /* pic_width_in_mbs_minus1 */ + vl_rbsp_ue(rbsp); + + /* pic_height_in_map_units_minus1 */ + vl_rbsp_ue(rbsp); + + sps->frame_mbs_only_flag = vl_rbsp_u(rbsp, 1); + if (!sps->frame_mbs_only_flag) + sps->mb_adaptive_frame_field_flag = vl_rbsp_u(rbsp, 1); + + sps->direct_8x8_inference_flag = vl_rbsp_u(rbsp, 1); + + /* frame_cropping_flag */ + if (vl_rbsp_u(rbsp, 1)) { + /* frame_crop_left_offset */ + vl_rbsp_ue(rbsp); + + /* frame_crop_right_offset */ + vl_rbsp_ue(rbsp); + + /* frame_crop_top_offset */ + vl_rbsp_ue(rbsp); + + /* frame_crop_bottom_offset */ + vl_rbsp_ue(rbsp); + } + + /* vui_parameters_present_flag */ + if (vl_rbsp_u(rbsp, 1)) + vui_parameters(rbsp); +} + +static struct pipe_h264_pps *pic_parameter_set_id(vid_dec_PrivateType *priv, struct vl_rbsp *rbsp) +{ + unsigned id = vl_rbsp_ue(rbsp); + if (id >= ARRAY_SIZE(priv->codec_data.h264.pps)) + return NULL; /* invalid pic_parameter_set_id */ + + return &priv->codec_data.h264.pps[id]; +} + +static void picture_parameter_set(vid_dec_PrivateType *priv, struct vl_rbsp *rbsp) +{ + struct pipe_h264_sps *sps; + struct pipe_h264_pps *pps; + unsigned i; + + pps = pic_parameter_set_id(priv, rbsp); + if (!pps) + return; + + memset(pps, 0, sizeof(*pps)); + + sps = pps->sps = seq_parameter_set_id(priv, rbsp); + if (!sps) + return; + + memcpy(pps->ScalingList4x4, sps->ScalingList4x4, sizeof(pps->ScalingList4x4)); + memcpy(pps->ScalingList8x8, sps->ScalingList8x8, sizeof(pps->ScalingList8x8)); + + pps->entropy_coding_mode_flag = vl_rbsp_u(rbsp, 1); + + pps->bottom_field_pic_order_in_frame_present_flag = vl_rbsp_u(rbsp, 1); + + pps->num_slice_groups_minus1 = vl_rbsp_ue(rbsp); + if (pps->num_slice_groups_minus1 > 0) { + pps->slice_group_map_type = vl_rbsp_ue(rbsp); + + if (pps->slice_group_map_type == 0) { + + for (i = 0; i <= pps->num_slice_groups_minus1; ++i) + /* run_length_minus1[i] */ + vl_rbsp_ue(rbsp); + + } else if (pps->slice_group_map_type == 2) { + + for (i = 0; i <= pps->num_slice_groups_minus1; ++i) { + /* top_left[i] */ + vl_rbsp_ue(rbsp); + + /* bottom_right[i] */ + vl_rbsp_ue(rbsp); + } + + } else if (pps->slice_group_map_type >= 3 && pps->slice_group_map_type <= 5) { + + /* slice_group_change_direction_flag */ + vl_rbsp_u(rbsp, 1); + + pps->slice_group_change_rate_minus1 = vl_rbsp_ue(rbsp); + + } else if (pps->slice_group_map_type == 6) { + + unsigned pic_size_in_map_units_minus1; + + pic_size_in_map_units_minus1 = vl_rbsp_ue(rbsp); + + for (i = 0; i <= pic_size_in_map_units_minus1; ++i) + /* slice_group_id[i] */ + vl_rbsp_u(rbsp, log2(pps->num_slice_groups_minus1 + 1)); + } + } + + pps->num_ref_idx_l0_default_active_minus1 = vl_rbsp_ue(rbsp); + + pps->num_ref_idx_l1_default_active_minus1 = vl_rbsp_ue(rbsp); + + pps->weighted_pred_flag = vl_rbsp_u(rbsp, 1); + + pps->weighted_bipred_idc = vl_rbsp_u(rbsp, 2); + + pps->pic_init_qp_minus26 = vl_rbsp_se(rbsp); + + /* pic_init_qs_minus26 */ + vl_rbsp_se(rbsp); + + pps->chroma_qp_index_offset = vl_rbsp_se(rbsp); + + pps->deblocking_filter_control_present_flag = vl_rbsp_u(rbsp, 1); + + pps->constrained_intra_pred_flag = vl_rbsp_u(rbsp, 1); + + pps->redundant_pic_cnt_present_flag = vl_rbsp_u(rbsp, 1); + + if (vl_rbsp_more_data(rbsp)) { + pps->transform_8x8_mode_flag = vl_rbsp_u(rbsp, 1); + + /* pic_scaling_matrix_present_flag */ + if (vl_rbsp_u(rbsp, 1)) { + + scaling_list(rbsp, pps->ScalingList4x4[0], 16, Default_4x4_Intra, + sps->seq_scaling_matrix_present_flag ? NULL : Default_4x4_Intra); + scaling_list(rbsp, pps->ScalingList4x4[1], 16, Default_4x4_Intra, pps->ScalingList4x4[0]); + scaling_list(rbsp, pps->ScalingList4x4[2], 16, Default_4x4_Intra, pps->ScalingList4x4[1]); + scaling_list(rbsp, pps->ScalingList4x4[3], 16, Default_4x4_Inter, + sps->seq_scaling_matrix_present_flag ? NULL : Default_4x4_Inter); + scaling_list(rbsp, pps->ScalingList4x4[4], 16, Default_4x4_Inter, pps->ScalingList4x4[3]); + scaling_list(rbsp, pps->ScalingList4x4[5], 16, Default_4x4_Inter, pps->ScalingList4x4[4]); + + if (pps->transform_8x8_mode_flag) { + scaling_list(rbsp, pps->ScalingList8x8[0], 64, Default_8x8_Intra, + sps->seq_scaling_matrix_present_flag ? NULL : Default_8x8_Intra); + scaling_list(rbsp, pps->ScalingList8x8[1], 64, Default_8x8_Inter, + sps->seq_scaling_matrix_present_flag ? NULL : Default_8x8_Inter); + if (sps->chroma_format_idc == 3) { + scaling_list(rbsp, pps->ScalingList8x8[2], 64, Default_8x8_Intra, pps->ScalingList8x8[0]); + scaling_list(rbsp, pps->ScalingList8x8[3], 64, Default_8x8_Inter, pps->ScalingList8x8[1]); + scaling_list(rbsp, pps->ScalingList8x8[4], 64, Default_8x8_Intra, pps->ScalingList8x8[2]); + scaling_list(rbsp, pps->ScalingList8x8[5], 64, Default_8x8_Inter, pps->ScalingList8x8[3]); + } + } + } + + pps->second_chroma_qp_index_offset = vl_rbsp_se(rbsp); + } +} + +static void ref_pic_list_mvc_modification(vid_dec_PrivateType *priv, struct vl_rbsp *rbsp) +{ + // TODO + assert(0); +} + +static void ref_pic_list_modification(vid_dec_PrivateType *priv, struct vl_rbsp *rbsp, + enum pipe_h264_slice_type slice_type) +{ + unsigned modification_of_pic_nums_idc; + + if (slice_type != 2 && slice_type != 4) { + /* ref_pic_list_modification_flag_l0 */ + if (vl_rbsp_u(rbsp, 1)) { + do { + modification_of_pic_nums_idc = vl_rbsp_ue(rbsp); + if (modification_of_pic_nums_idc == 0 || + modification_of_pic_nums_idc == 1) + /* abs_diff_pic_num_minus1 */ + vl_rbsp_ue(rbsp); + else if (modification_of_pic_nums_idc == 2) + /* long_term_pic_num */ + vl_rbsp_ue(rbsp); + } while (modification_of_pic_nums_idc != 3); + } + } + + if (slice_type == 1) { + /* ref_pic_list_modification_flag_l1 */ + if (vl_rbsp_u(rbsp, 1)) { + do { + modification_of_pic_nums_idc = vl_rbsp_ue(rbsp); + if (modification_of_pic_nums_idc == 0 || + modification_of_pic_nums_idc == 1) + /* abs_diff_pic_num_minus1 */ + vl_rbsp_ue(rbsp); + else if (modification_of_pic_nums_idc == 2) + /* long_term_pic_num */ + vl_rbsp_ue(rbsp); + } while (modification_of_pic_nums_idc != 3); + } + } +} + +static void pred_weight_table(vid_dec_PrivateType *priv, struct vl_rbsp *rbsp, + struct pipe_h264_sps *sps, enum pipe_h264_slice_type slice_type) +{ + unsigned ChromaArrayType = sps->separate_colour_plane_flag ? 0 : sps->chroma_format_idc; + unsigned i, j; + + /* luma_log2_weight_denom */ + vl_rbsp_ue(rbsp); + + if (ChromaArrayType != 0) + /* chroma_log2_weight_denom */ + vl_rbsp_ue(rbsp); + + for (i = 0; i <= priv->picture.h264.num_ref_idx_l0_active_minus1; ++i) { + /* luma_weight_l0_flag */ + if (vl_rbsp_u(rbsp, 1)) { + /* luma_weight_l0[i] */ + vl_rbsp_se(rbsp); + /* luma_offset_l0[i] */ + vl_rbsp_se(rbsp); + } + if (ChromaArrayType != 0) { + /* chroma_weight_l0_flag */ + if (vl_rbsp_u(rbsp, 1)) { + for (j = 0; j < 2; ++j) { + /* chroma_weight_l0[i][j] */ + vl_rbsp_se(rbsp); + /* chroma_offset_l0[i][j] */ + vl_rbsp_se(rbsp); + } + } + } + } + + if (slice_type == 1) { + for (i = 0; i <= priv->picture.h264.num_ref_idx_l1_active_minus1; ++i) { + /* luma_weight_l1_flag */ + if (vl_rbsp_u(rbsp, 1)) { + /* luma_weight_l1[i] */ + vl_rbsp_se(rbsp); + /* luma_offset_l1[i] */ + vl_rbsp_se(rbsp); + } + if (ChromaArrayType != 0) { + /* chroma_weight_l1_flag */ + if (vl_rbsp_u(rbsp, 1)) { + for (j = 0; j < 2; ++j) { + /* chroma_weight_l1[i][j] */ + vl_rbsp_se(rbsp); + /* chroma_offset_l1[i][j] */ + vl_rbsp_se(rbsp); + } + } + } + } + } +} + +static void dec_ref_pic_marking(vid_dec_PrivateType *priv, struct vl_rbsp *rbsp, + bool IdrPicFlag) +{ + unsigned memory_management_control_operation; + + if (IdrPicFlag) { + /* no_output_of_prior_pics_flag */ + vl_rbsp_u(rbsp, 1); + /* long_term_reference_flag */ + vl_rbsp_u(rbsp, 1); + } else { + /* adaptive_ref_pic_marking_mode_flag */ + if (vl_rbsp_u(rbsp, 1)) { + do { + memory_management_control_operation = vl_rbsp_ue(rbsp); + + if (memory_management_control_operation == 1 || + memory_management_control_operation == 3) + /* difference_of_pic_nums_minus1 */ + vl_rbsp_ue(rbsp); + + if (memory_management_control_operation == 2) + /* long_term_pic_num */ + vl_rbsp_ue(rbsp); + + if (memory_management_control_operation == 3 || + memory_management_control_operation == 6) + /* long_term_frame_idx */ + vl_rbsp_ue(rbsp); + + if (memory_management_control_operation == 4) + /* max_long_term_frame_idx_plus1 */ + vl_rbsp_ue(rbsp); + } while (memory_management_control_operation != 0); + } + } +} + +static void slice_header(vid_dec_PrivateType *priv, struct vl_rbsp *rbsp, + unsigned nal_ref_idc, unsigned nal_unit_type) +{ + enum pipe_h264_slice_type slice_type; + struct pipe_h264_pps *pps; + struct pipe_h264_sps *sps; + unsigned frame_num, prevFrameNum; + bool IdrPicFlag = nal_unit_type == 5; + + if (IdrPicFlag != priv->codec_data.h264.IdrPicFlag) + vid_dec_h264_EndFrame(priv); + + priv->codec_data.h264.IdrPicFlag = IdrPicFlag; + + /* first_mb_in_slice */ + vl_rbsp_ue(rbsp); + + slice_type = vl_rbsp_ue(rbsp) % 5; + + pps = pic_parameter_set_id(priv, rbsp); + if (!pps) + return; + + sps = pps->sps; + if (!sps) + return; + + if (pps != priv->picture.h264.pps) + vid_dec_h264_EndFrame(priv); + + priv->picture.h264.pps = pps; + + if (sps->separate_colour_plane_flag == 1 ) + /* colour_plane_id */ + vl_rbsp_u(rbsp, 2); + + frame_num = vl_rbsp_u(rbsp, sps->log2_max_frame_num_minus4 + 4); + + if (frame_num != priv->picture.h264.frame_num) + vid_dec_h264_EndFrame(priv); + + prevFrameNum = priv->picture.h264.frame_num; + priv->picture.h264.frame_num = frame_num; + + priv->picture.h264.field_pic_flag = 0; + priv->picture.h264.bottom_field_flag = 0; + + if (!sps->frame_mbs_only_flag) { + unsigned field_pic_flag = vl_rbsp_u(rbsp, 1); + + if (!field_pic_flag && field_pic_flag != priv->picture.h264.field_pic_flag) + vid_dec_h264_EndFrame(priv); + + priv->picture.h264.field_pic_flag = field_pic_flag; + + if (priv->picture.h264.field_pic_flag) { + unsigned bottom_field_flag = vl_rbsp_u(rbsp, 1); + + if (bottom_field_flag != priv->picture.h264.bottom_field_flag) + vid_dec_h264_EndFrame(priv); + + priv->picture.h264.bottom_field_flag = bottom_field_flag; + } + } + + if (IdrPicFlag) { + unsigned idr_pic_id = vl_rbsp_ue(rbsp); + + if (idr_pic_id != priv->codec_data.h264.idr_pic_id) + vid_dec_h264_EndFrame(priv); + + priv->codec_data.h264.idr_pic_id = idr_pic_id; + } + + if (sps->pic_order_cnt_type == 0) { + unsigned log2_max_pic_order_cnt_lsb = sps->log2_max_pic_order_cnt_lsb_minus4 + 4; + unsigned max_pic_order_cnt_lsb = 1 << log2_max_pic_order_cnt_lsb; + int pic_order_cnt_lsb = vl_rbsp_u(rbsp, log2_max_pic_order_cnt_lsb); + int pic_order_cnt_msb; + + if (pic_order_cnt_lsb != priv->codec_data.h264.pic_order_cnt_lsb) + vid_dec_h264_EndFrame(priv); + + if (IdrPicFlag) { + priv->codec_data.h264.pic_order_cnt_msb = 0; + priv->codec_data.h264.pic_order_cnt_lsb = 0; + } + + if ((pic_order_cnt_lsb < priv->codec_data.h264.pic_order_cnt_lsb) && + (priv->codec_data.h264.pic_order_cnt_lsb - pic_order_cnt_lsb) >= (max_pic_order_cnt_lsb / 2)) + pic_order_cnt_msb = priv->codec_data.h264.pic_order_cnt_msb + max_pic_order_cnt_lsb; + + else if ((pic_order_cnt_lsb > priv->codec_data.h264.pic_order_cnt_lsb) && + (pic_order_cnt_lsb - priv->codec_data.h264.pic_order_cnt_lsb) > (max_pic_order_cnt_lsb / 2)) + pic_order_cnt_msb = priv->codec_data.h264.pic_order_cnt_msb - max_pic_order_cnt_lsb; + + else + pic_order_cnt_msb = priv->codec_data.h264.pic_order_cnt_msb; + + priv->codec_data.h264.pic_order_cnt_msb = pic_order_cnt_msb; + priv->codec_data.h264.pic_order_cnt_lsb = pic_order_cnt_lsb; + + if (pps->bottom_field_pic_order_in_frame_present_flag && !priv->picture.h264.field_pic_flag) { + unsigned delta_pic_order_cnt_bottom = vl_rbsp_se(rbsp); + + if (delta_pic_order_cnt_bottom != priv->codec_data.h264.delta_pic_order_cnt_bottom) + vid_dec_h264_EndFrame(priv); + + priv->codec_data.h264.delta_pic_order_cnt_bottom = delta_pic_order_cnt_bottom; + } + + if (!priv->picture.h264.field_pic_flag) { + priv->picture.h264.field_order_cnt[0] = pic_order_cnt_msb + pic_order_cnt_lsb; + priv->picture.h264.field_order_cnt[1] = priv->picture.h264.field_order_cnt [0] + + priv->codec_data.h264.delta_pic_order_cnt_bottom; + } else if (!priv->picture.h264.bottom_field_flag) + priv->picture.h264.field_order_cnt[0] = pic_order_cnt_msb + pic_order_cnt_lsb; + else + priv->picture.h264.field_order_cnt[1] = pic_order_cnt_msb + pic_order_cnt_lsb; + + } else if (sps->pic_order_cnt_type == 1) { + unsigned MaxFrameNum = 1 << (sps->log2_max_frame_num_minus4 + 4); + unsigned FrameNumOffset, absFrameNum, expectedPicOrderCnt; + + if (!sps->delta_pic_order_always_zero_flag) { + unsigned delta_pic_order_cnt[2]; + + delta_pic_order_cnt[0] = vl_rbsp_se(rbsp); + + if (delta_pic_order_cnt[0] != priv->codec_data.h264.delta_pic_order_cnt[0]) + vid_dec_h264_EndFrame(priv); + + priv->codec_data.h264.delta_pic_order_cnt[0] = delta_pic_order_cnt[0]; + + if (pps->bottom_field_pic_order_in_frame_present_flag && !priv->picture.h264.field_pic_flag) { + delta_pic_order_cnt[1] = vl_rbsp_se(rbsp); + + if (delta_pic_order_cnt[1] != priv->codec_data.h264.delta_pic_order_cnt[1]) + vid_dec_h264_EndFrame(priv); + + priv->codec_data.h264.delta_pic_order_cnt[1] = delta_pic_order_cnt[1]; + } + } + + if (IdrPicFlag) + FrameNumOffset = 0; + else if (prevFrameNum > frame_num) + FrameNumOffset = priv->codec_data.h264.prevFrameNumOffset + MaxFrameNum; + else + FrameNumOffset = priv->codec_data.h264.prevFrameNumOffset; + + priv->codec_data.h264.prevFrameNumOffset = FrameNumOffset; + + if (sps->num_ref_frames_in_pic_order_cnt_cycle != 0) + absFrameNum = FrameNumOffset + frame_num; + else + absFrameNum = 0; + + if (nal_ref_idc == 0 && absFrameNum > 0) + absFrameNum = absFrameNum - 1; + + if (absFrameNum > 0) { + unsigned picOrderCntCycleCnt = (absFrameNum - 1) / sps->num_ref_frames_in_pic_order_cnt_cycle; + unsigned frameNumInPicOrderCntCycle = (absFrameNum - 1) % sps->num_ref_frames_in_pic_order_cnt_cycle; + signed ExpectedDeltaPerPicOrderCntCycle = 0; + unsigned i; + + for (i = 0; i < sps->num_ref_frames_in_pic_order_cnt_cycle; ++i) + ExpectedDeltaPerPicOrderCntCycle += sps->offset_for_ref_frame[i]; + + expectedPicOrderCnt = picOrderCntCycleCnt * ExpectedDeltaPerPicOrderCntCycle; + for (i = 0; i <= frameNumInPicOrderCntCycle; ++i) + expectedPicOrderCnt += sps->offset_for_ref_frame[i]; + + } else + expectedPicOrderCnt = 0; + + if (nal_ref_idc == 0) + expectedPicOrderCnt += sps->offset_for_non_ref_pic; + + if (!priv->picture.h264.field_pic_flag) { + priv->picture.h264.field_order_cnt[0] = expectedPicOrderCnt + priv->codec_data.h264.delta_pic_order_cnt[0]; + priv->picture.h264.field_order_cnt[1] = priv->picture.h264.field_order_cnt[0] + + sps->offset_for_top_to_bottom_field + priv->codec_data.h264.delta_pic_order_cnt[1]; + + } else if (!priv->picture.h264.bottom_field_flag) + priv->picture.h264.field_order_cnt[0] = expectedPicOrderCnt + priv->codec_data.h264.delta_pic_order_cnt[0]; + else + priv->picture.h264.field_order_cnt[1] = expectedPicOrderCnt + sps->offset_for_top_to_bottom_field + + priv->codec_data.h264.delta_pic_order_cnt[0]; + + } else if (sps->pic_order_cnt_type == 2) { + unsigned MaxFrameNum = 1 << (sps->log2_max_frame_num_minus4 + 4); + unsigned FrameNumOffset, tempPicOrderCnt; + + if (IdrPicFlag) + FrameNumOffset = 0; + else if (prevFrameNum > frame_num) + FrameNumOffset = priv->codec_data.h264.prevFrameNumOffset + MaxFrameNum; + else + FrameNumOffset = priv->codec_data.h264.prevFrameNumOffset; + + priv->codec_data.h264.prevFrameNumOffset = FrameNumOffset; + + if (IdrPicFlag) + tempPicOrderCnt = 0; + else if (nal_ref_idc == 0) + tempPicOrderCnt = 2 * (FrameNumOffset + frame_num) - 1; + else + tempPicOrderCnt = 2 * (FrameNumOffset + frame_num); + + if (!priv->picture.h264.field_pic_flag) { + priv->picture.h264.field_order_cnt[0] = tempPicOrderCnt; + priv->picture.h264.field_order_cnt[1] = tempPicOrderCnt; + + } else if (!priv->picture.h264.bottom_field_flag) + priv->picture.h264.field_order_cnt[0] = tempPicOrderCnt; + else + priv->picture.h264.field_order_cnt[1] = tempPicOrderCnt; + } + + if (pps->redundant_pic_cnt_present_flag) + /* redundant_pic_cnt */ + vl_rbsp_ue(rbsp); + + if (slice_type == PIPE_H264_SLICE_TYPE_B) + /* direct_spatial_mv_pred_flag */ + vl_rbsp_u(rbsp, 1); + + priv->picture.h264.num_ref_idx_l0_active_minus1 = pps->num_ref_idx_l0_default_active_minus1; + priv->picture.h264.num_ref_idx_l1_active_minus1 = pps->num_ref_idx_l1_default_active_minus1; + + if (slice_type == PIPE_H264_SLICE_TYPE_P || + slice_type == PIPE_H264_SLICE_TYPE_SP || + slice_type == PIPE_H264_SLICE_TYPE_B) { + + /* num_ref_idx_active_override_flag */ + if (vl_rbsp_u(rbsp, 1)) { + priv->picture.h264.num_ref_idx_l0_active_minus1 = vl_rbsp_ue(rbsp); + + if (slice_type == PIPE_H264_SLICE_TYPE_B) + priv->picture.h264.num_ref_idx_l1_active_minus1 = vl_rbsp_ue(rbsp); + } + } + + if (nal_unit_type == 20 || nal_unit_type == 21) + ref_pic_list_mvc_modification(priv, rbsp); + else + ref_pic_list_modification(priv, rbsp, slice_type); + + if ((pps->weighted_pred_flag && (slice_type == PIPE_H264_SLICE_TYPE_P || slice_type == PIPE_H264_SLICE_TYPE_SP)) || + (pps->weighted_bipred_idc == 1 && slice_type == PIPE_H264_SLICE_TYPE_B)) + pred_weight_table(priv, rbsp, sps, slice_type); + + if (nal_ref_idc != 0) + dec_ref_pic_marking(priv, rbsp, IdrPicFlag); + + if (pps->entropy_coding_mode_flag && slice_type != PIPE_H264_SLICE_TYPE_I && slice_type != PIPE_H264_SLICE_TYPE_SI) + /* cabac_init_idc */ + vl_rbsp_ue(rbsp); + + /* slice_qp_delta */ + vl_rbsp_se(rbsp); + + if (slice_type == PIPE_H264_SLICE_TYPE_SP || slice_type == PIPE_H264_SLICE_TYPE_SI) { + if (slice_type == PIPE_H264_SLICE_TYPE_SP) + /* sp_for_switch_flag */ + vl_rbsp_u(rbsp, 1); + + /*slice_qs_delta */ + vl_rbsp_se(rbsp); + } + + if (pps->deblocking_filter_control_present_flag) { + unsigned disable_deblocking_filter_idc = vl_rbsp_ue(rbsp); + + if (disable_deblocking_filter_idc != 1) { + /* slice_alpha_c0_offset_div2 */ + vl_rbsp_se(rbsp); + + /* slice_beta_offset_div2 */ + vl_rbsp_se(rbsp); + } + } + + if (pps->num_slice_groups_minus1 > 0 && pps->slice_group_map_type >= 3 && pps->slice_group_map_type <= 5) + /* slice_group_change_cycle */ + vl_rbsp_u(rbsp, 2); +} + +static void vid_dec_h264_Decode(vid_dec_PrivateType *priv, struct vl_vlc *vlc, unsigned min_bits_left) +{ + unsigned nal_ref_idc, nal_unit_type; + + if (!vl_vlc_search_byte(vlc, vl_vlc_bits_left(vlc) - min_bits_left, 0x00)) + return; + + if (vl_vlc_peekbits(vlc, 24) != 0x000001) { + vl_vlc_eatbits(vlc, 8); + return; + } + + if (priv->slice) { + unsigned bytes = priv->bytes_left - (vl_vlc_bits_left(vlc) / 8); + ++priv->picture.h264.slice_count; + priv->codec->decode_bitstream(priv->codec, priv->target, &priv->picture.base, + 1, &priv->slice, &bytes); + priv->slice = NULL; + } + + vl_vlc_eatbits(vlc, 24); + + /* forbidden_zero_bit */ + vl_vlc_eatbits(vlc, 1); + + nal_ref_idc = vl_vlc_get_uimsbf(vlc, 2); + + if (nal_ref_idc != priv->codec_data.h264.nal_ref_idc && + (nal_ref_idc * priv->codec_data.h264.nal_ref_idc) == 0) + vid_dec_h264_EndFrame(priv); + + priv->codec_data.h264.nal_ref_idc = nal_ref_idc; + + nal_unit_type = vl_vlc_get_uimsbf(vlc, 5); + + if (nal_unit_type != 1 && nal_unit_type != 5) + vid_dec_h264_EndFrame(priv); + + if (nal_unit_type == 7) { + struct vl_rbsp rbsp; + vl_rbsp_init(&rbsp, vlc, ~0); + seq_parameter_set(priv, &rbsp); + + } else if (nal_unit_type == 8) { + struct vl_rbsp rbsp; + vl_rbsp_init(&rbsp, vlc, ~0); + picture_parameter_set(priv, &rbsp); + + } else if (nal_unit_type == 1 || nal_unit_type == 5) { + /* Coded slice of a non-IDR or IDR picture */ + unsigned bits = vl_vlc_valid_bits(vlc); + unsigned bytes = bits / 8 + 4; + struct vl_rbsp rbsp; + uint8_t buf[8]; + const void *ptr = buf; + unsigned i; + + buf[0] = 0x0; + buf[1] = 0x0; + buf[2] = 0x1; + buf[3] = (nal_ref_idc << 5) | nal_unit_type; + for (i = 4; i < bytes; ++i) + buf[i] = vl_vlc_peekbits(vlc, bits) >> ((bytes - i - 1) * 8); + + priv->bytes_left = (vl_vlc_bits_left(vlc) - bits) / 8; + priv->slice = vlc->data; + + vl_rbsp_init(&rbsp, vlc, 128); + slice_header(priv, &rbsp, nal_ref_idc, nal_unit_type); + + vid_dec_h264_BeginFrame(priv); + + ++priv->picture.h264.slice_count; + priv->codec->decode_bitstream(priv->codec, priv->target, &priv->picture.base, + 1, &ptr, &bytes); + } + + /* resync to byte boundary */ + vl_vlc_eatbits(vlc, vl_vlc_valid_bits(vlc) % 8); +} |