diff options
Diffstat (limited to 'libavcodec/h264.c')
| -rw-r--r-- | libavcodec/h264.c | 736 |
1 files changed, 562 insertions, 174 deletions
diff --git a/libavcodec/h264.c b/libavcodec/h264.c index eb873a4855..0aa923fdbb 100644 --- a/libavcodec/h264.c +++ b/libavcodec/h264.c @@ -36,6 +36,7 @@ #include "golomb.h" #include "mathops.h" #include "rectangle.h" +#include "thread.h" #include "vdpau_internal.h" #include "libavutil/avassert.h" @@ -245,6 +246,141 @@ static int ff_h264_decode_rbsp_trailing(H264Context *h, const uint8_t *src){ return 0; } +static inline int get_lowest_part_list_y(H264Context *h, Picture *pic, int n, int height, + int y_offset, int list){ + int raw_my= h->mv_cache[list][ scan8[n] ][1]; + int filter_height= (raw_my&3) ? 2 : 0; + int full_my= (raw_my>>2) + y_offset; + int top = full_my - filter_height, bottom = full_my + height + filter_height; + + return FFMAX(abs(top), bottom); +} + +static inline void get_lowest_part_y(H264Context *h, int refs[2][48], int n, int height, + int y_offset, int list0, int list1, int *nrefs){ + MpegEncContext * const s = &h->s; + int my; + + y_offset += 16*(s->mb_y >> MB_FIELD); + + if(list0){ + int ref_n = h->ref_cache[0][ scan8[n] ]; + Picture *ref= &h->ref_list[0][ref_n]; + + // Error resilience puts the current picture in the ref list. + // Don't try to wait on these as it will cause a deadlock. + // Fields can wait on each other, though. + if(ref->thread_opaque != s->current_picture.thread_opaque || + (ref->reference&3) != s->picture_structure) { + my = get_lowest_part_list_y(h, ref, n, height, y_offset, 0); + if (refs[0][ref_n] < 0) nrefs[0] += 1; + refs[0][ref_n] = FFMAX(refs[0][ref_n], my); + } + } + + if(list1){ + int ref_n = h->ref_cache[1][ scan8[n] ]; + Picture *ref= &h->ref_list[1][ref_n]; + + if(ref->thread_opaque != s->current_picture.thread_opaque || + (ref->reference&3) != s->picture_structure) { + my = get_lowest_part_list_y(h, ref, n, height, y_offset, 1); + if (refs[1][ref_n] < 0) nrefs[1] += 1; + refs[1][ref_n] = FFMAX(refs[1][ref_n], my); + } + } +} + +/** + * Wait until all reference frames are available for MC operations. + * + * @param h the H264 context + */ +static void await_references(H264Context *h){ + MpegEncContext * const s = &h->s; + const int mb_xy= h->mb_xy; + const int mb_type= s->current_picture.mb_type[mb_xy]; + int refs[2][48]; + int nrefs[2] = {0}; + int ref, list; + + memset(refs, -1, sizeof(refs)); + + if(IS_16X16(mb_type)){ + get_lowest_part_y(h, refs, 0, 16, 0, + IS_DIR(mb_type, 0, 0), IS_DIR(mb_type, 0, 1), nrefs); + }else if(IS_16X8(mb_type)){ + get_lowest_part_y(h, refs, 0, 8, 0, + IS_DIR(mb_type, 0, 0), IS_DIR(mb_type, 0, 1), nrefs); + get_lowest_part_y(h, refs, 8, 8, 8, + IS_DIR(mb_type, 1, 0), IS_DIR(mb_type, 1, 1), nrefs); + }else if(IS_8X16(mb_type)){ + get_lowest_part_y(h, refs, 0, 16, 0, + IS_DIR(mb_type, 0, 0), IS_DIR(mb_type, 0, 1), nrefs); + get_lowest_part_y(h, refs, 4, 16, 0, + IS_DIR(mb_type, 1, 0), IS_DIR(mb_type, 1, 1), nrefs); + }else{ + int i; + + assert(IS_8X8(mb_type)); + + for(i=0; i<4; i++){ + const int sub_mb_type= h->sub_mb_type[i]; + const int n= 4*i; + int y_offset= (i&2)<<2; + + if(IS_SUB_8X8(sub_mb_type)){ + get_lowest_part_y(h, refs, n , 8, y_offset, + IS_DIR(sub_mb_type, 0, 0), IS_DIR(sub_mb_type, 0, 1), nrefs); + }else if(IS_SUB_8X4(sub_mb_type)){ + get_lowest_part_y(h, refs, n , 4, y_offset, + IS_DIR(sub_mb_type, 0, 0), IS_DIR(sub_mb_type, 0, 1), nrefs); + get_lowest_part_y(h, refs, n+2, 4, y_offset+4, + IS_DIR(sub_mb_type, 0, 0), IS_DIR(sub_mb_type, 0, 1), nrefs); + }else if(IS_SUB_4X8(sub_mb_type)){ + get_lowest_part_y(h, refs, n , 8, y_offset, + IS_DIR(sub_mb_type, 0, 0), IS_DIR(sub_mb_type, 0, 1), nrefs); + get_lowest_part_y(h, refs, n+1, 8, y_offset, + IS_DIR(sub_mb_type, 0, 0), IS_DIR(sub_mb_type, 0, 1), nrefs); + }else{ + int j; + assert(IS_SUB_4X4(sub_mb_type)); + for(j=0; j<4; j++){ + int sub_y_offset= y_offset + 2*(j&2); + get_lowest_part_y(h, refs, n+j, 4, sub_y_offset, + IS_DIR(sub_mb_type, 0, 0), IS_DIR(sub_mb_type, 0, 1), nrefs); + } + } + } + } + + for(list=h->list_count-1; list>=0; list--){ + for(ref=0; ref<48 && nrefs[list]; ref++){ + int row = refs[list][ref]; + if(row >= 0){ + Picture *ref_pic = &h->ref_list[list][ref]; + int ref_field = ref_pic->reference - 1; + int ref_field_picture = ref_pic->field_picture; + int pic_height = 16*s->mb_height >> ref_field_picture; + + row <<= MB_MBAFF; + nrefs[list]--; + + if(!FIELD_PICTURE && ref_field_picture){ // frame referencing two fields + ff_thread_await_progress((AVFrame*)ref_pic, FFMIN((row >> 1) - !(row&1), pic_height-1), 1); + ff_thread_await_progress((AVFrame*)ref_pic, FFMIN((row >> 1) , pic_height-1), 0); + }else if(FIELD_PICTURE && !ref_field_picture){ // field referencing one field of a frame + ff_thread_await_progress((AVFrame*)ref_pic, FFMIN(row*2 + ref_field , pic_height-1), 0); + }else if(FIELD_PICTURE){ + ff_thread_await_progress((AVFrame*)ref_pic, FFMIN(row, pic_height-1), ref_field); + }else{ + ff_thread_await_progress((AVFrame*)ref_pic, FFMIN(row, pic_height-1), 0); + } + } + } + } +} + #if 0 /** * DCT transforms the 16 dc values. @@ -518,6 +654,8 @@ static av_always_inline void hl_motion(H264Context *h, uint8_t *dest_y, uint8_t assert(IS_INTER(mb_type)); + if(HAVE_PTHREADS && (s->avctx->active_thread_type & FF_THREAD_FRAME)) + await_references(h); prefetch_motion(h, 0, pixel_shift); if(IS_16X16(mb_type)){ @@ -626,6 +764,7 @@ hl_motion_fn(1, 16); static void free_tables(H264Context *h, int free_rbsp){ int i; H264Context *hx; + av_freep(&h->intra4x4_pred_mode); av_freep(&h->chroma_pred_mode_table); av_freep(&h->cbp_table); @@ -898,7 +1037,7 @@ av_cold int ff_h264_decode_init(AVCodecContext *avctx){ h->sps.bit_depth_luma = avctx->bits_per_raw_sample = 8; h->thread_context[0] = h; - h->outputed_poc = INT_MIN; + h->outputed_poc = h->next_outputed_poc = INT_MIN; h->prev_poc_msb= 1<<16; h->x264_build = -1; ff_h264_reset_sei(h); @@ -921,10 +1060,135 @@ av_cold int ff_h264_decode_init(AVCodecContext *avctx){ return 0; } +#define IN_RANGE(a, b, size) (((a) >= (b)) && ((a) < ((b)+(size)))) +static void copy_picture_range(Picture **to, Picture **from, int count, MpegEncContext *new_base, MpegEncContext *old_base) +{ + int i; + + for (i=0; i<count; i++){ + assert((IN_RANGE(from[i], old_base, sizeof(*old_base)) || + IN_RANGE(from[i], old_base->picture, sizeof(Picture) * old_base->picture_count) || + !from[i])); + to[i] = REBASE_PICTURE(from[i], new_base, old_base); + } +} + +static void copy_parameter_set(void **to, void **from, int count, int size) +{ + int i; + + for (i=0; i<count; i++){ + if (to[i] && !from[i]) av_freep(&to[i]); + else if (from[i] && !to[i]) to[i] = av_malloc(size); + + if (from[i]) memcpy(to[i], from[i], size); + } +} + +static int decode_init_thread_copy(AVCodecContext *avctx){ + H264Context *h= avctx->priv_data; + + if (!avctx->is_copy) return 0; + memset(h->sps_buffers, 0, sizeof(h->sps_buffers)); + memset(h->pps_buffers, 0, sizeof(h->pps_buffers)); + + return 0; +} + +#define copy_fields(to, from, start_field, end_field) memcpy(&to->start_field, &from->start_field, (char*)&to->end_field - (char*)&to->start_field) +static int decode_update_thread_context(AVCodecContext *dst, const AVCodecContext *src){ + H264Context *h= dst->priv_data, *h1= src->priv_data; + MpegEncContext * const s = &h->s, * const s1 = &h1->s; + int inited = s->context_initialized, err; + int i; + + if(dst == src || !s1->context_initialized) return 0; + + err = ff_mpeg_update_thread_context(dst, src); + if(err) return err; + + //FIXME handle width/height changing + if(!inited){ + for(i = 0; i < MAX_SPS_COUNT; i++) + av_freep(h->sps_buffers + i); + + for(i = 0; i < MAX_PPS_COUNT; i++) + av_freep(h->pps_buffers + i); + + memcpy(&h->s + 1, &h1->s + 1, sizeof(H264Context) - sizeof(MpegEncContext)); //copy all fields after MpegEnc + memset(h->sps_buffers, 0, sizeof(h->sps_buffers)); + memset(h->pps_buffers, 0, sizeof(h->pps_buffers)); + ff_h264_alloc_tables(h); + context_init(h); + + for(i=0; i<2; i++){ + h->rbsp_buffer[i] = NULL; + h->rbsp_buffer_size[i] = 0; + } + + h->thread_context[0] = h; + + // frame_start may not be called for the next thread (if it's decoding a bottom field) + // so this has to be allocated here + h->s.obmc_scratchpad = av_malloc(16*2*s->linesize + 8*2*s->uvlinesize); + + s->dsp.clear_blocks(h->mb); + } + + //extradata/NAL handling + h->is_avc = h1->is_avc; + + //SPS/PPS + copy_parameter_set((void**)h->sps_buffers, (void**)h1->sps_buffers, MAX_SPS_COUNT, sizeof(SPS)); + h->sps = h1->sps; + copy_parameter_set((void**)h->pps_buffers, (void**)h1->pps_buffers, MAX_PPS_COUNT, sizeof(PPS)); + h->pps = h1->pps; + + //Dequantization matrices + //FIXME these are big - can they be only copied when PPS changes? + copy_fields(h, h1, dequant4_buffer, dequant4_coeff); + + for(i=0; i<6; i++) + h->dequant4_coeff[i] = h->dequant4_buffer[0] + (h1->dequant4_coeff[i] - h1->dequant4_buffer[0]); + + for(i=0; i<2; i++) + h->dequant8_coeff[i] = h->dequant8_buffer[0] + (h1->dequant8_coeff[i] - h1->dequant8_buffer[0]); + + h->dequant_coeff_pps = h1->dequant_coeff_pps; + + //POC timing + copy_fields(h, h1, poc_lsb, redundant_pic_count); + + //reference lists + copy_fields(h, h1, ref_count, list_count); + copy_fields(h, h1, ref_list, intra_gb); + copy_fields(h, h1, short_ref, cabac_init_idc); + + copy_picture_range(h->short_ref, h1->short_ref, 32, s, s1); + copy_picture_range(h->long_ref, h1->long_ref, 32, s, s1); + copy_picture_range(h->delayed_pic, h1->delayed_pic, MAX_DELAYED_PIC_COUNT+2, s, s1); + + h->last_slice_type = h1->last_slice_type; + + if(!s->current_picture_ptr) return 0; + + if(!s->dropable) { + ff_h264_execute_ref_pic_marking(h, h->mmco, h->mmco_index); + h->prev_poc_msb = h->poc_msb; + h->prev_poc_lsb = h->poc_lsb; + } + h->prev_frame_num_offset= h->frame_num_offset; + h->prev_frame_num = h->frame_num; + h->outputed_poc = h->next_outputed_poc; + + return 0; +} + int ff_h264_frame_start(H264Context *h){ MpegEncContext * const s = &h->s; int i; const int pixel_shift = h->pixel_shift; + int thread_count = (s->avctx->active_thread_type & FF_THREAD_SLICE) ? s->avctx->thread_count : 1; if(MPV_frame_start(s, s->avctx) < 0) return -1; @@ -953,7 +1217,7 @@ int ff_h264_frame_start(H264Context *h){ /* can't be in alloc_tables because linesize isn't known there. * FIXME: redo bipred weight to not require extra buffer? */ - for(i = 0; i < s->avctx->thread_count; i++) + for(i = 0; i < thread_count; i++) if(h->thread_context[i] && !h->thread_context[i]->s.obmc_scratchpad) h->thread_context[i]->s.obmc_scratchpad = av_malloc(16*2*s->linesize + 8*2*s->uvlinesize); @@ -973,11 +1237,173 @@ int ff_h264_frame_start(H264Context *h){ s->current_picture_ptr->field_poc[0]= s->current_picture_ptr->field_poc[1]= INT_MAX; + + h->next_output_pic = NULL; + assert(s->current_picture_ptr->long_ref==0); return 0; } +/** + * Run setup operations that must be run after slice header decoding. + * This includes finding the next displayed frame. + * + * @param h h264 master context + * @param setup_finished enough NALs have been read that we can call + * ff_thread_finish_setup() + */ +static void decode_postinit(H264Context *h, int setup_finished){ + MpegEncContext * const s = &h->s; + Picture *out = s->current_picture_ptr; + Picture *cur = s->current_picture_ptr; + int i, pics, out_of_order, out_idx; + + s->current_picture_ptr->qscale_type= FF_QSCALE_TYPE_H264; + s->current_picture_ptr->pict_type= s->pict_type; + + if (h->next_output_pic) return; + + if (cur->field_poc[0]==INT_MAX || cur->field_poc[1]==INT_MAX) { + //FIXME: if we have two PAFF fields in one packet, we can't start the next thread here. + //If we have one field per packet, we can. The check in decode_nal_units() is not good enough + //to find this yet, so we assume the worst for now. + //if (setup_finished) + // ff_thread_finish_setup(s->avctx); + return; + } + + cur->interlaced_frame = 0; + cur->repeat_pict = 0; + + /* Signal interlacing information externally. */ + /* Prioritize picture timing SEI information over used decoding process if it exists. */ + + if(h->sps.pic_struct_present_flag){ + switch (h->sei_pic_struct) + { + case SEI_PIC_STRUCT_FRAME: + break; + case SEI_PIC_STRUCT_TOP_FIELD: + case SEI_PIC_STRUCT_BOTTOM_FIELD: + cur->interlaced_frame = 1; + break; + case SEI_PIC_STRUCT_TOP_BOTTOM: + case SEI_PIC_STRUCT_BOTTOM_TOP: + if (FIELD_OR_MBAFF_PICTURE) + cur->interlaced_frame = 1; + else + // try to flag soft telecine progressive + cur->interlaced_frame = h->prev_interlaced_frame; + break; + case SEI_PIC_STRUCT_TOP_BOTTOM_TOP: + case SEI_PIC_STRUCT_BOTTOM_TOP_BOTTOM: + // Signal the possibility of telecined film externally (pic_struct 5,6) + // From these hints, let the applications decide if they apply deinterlacing. + cur->repeat_pict = 1; + break; + case SEI_PIC_STRUCT_FRAME_DOUBLING: + // Force progressive here, as doubling interlaced frame is a bad idea. + cur->repeat_pict = 2; + break; + case SEI_PIC_STRUCT_FRAME_TRIPLING: + cur->repeat_pict = 4; + break; + } + + if ((h->sei_ct_type & 3) && h->sei_pic_struct <= SEI_PIC_STRUCT_BOTTOM_TOP) + cur->interlaced_frame = (h->sei_ct_type & (1<<1)) != 0; + }else{ + /* Derive interlacing flag from used decoding process. */ + cur->interlaced_frame = FIELD_OR_MBAFF_PICTURE; + } + h->prev_interlaced_frame = cur->interlaced_frame; + + if (cur->field_poc[0] != cur->field_poc[1]){ + /* Derive top_field_first from field pocs. */ + cur->top_field_first = cur->field_poc[0] < cur->field_poc[1]; + }else{ + if(cur->interlaced_frame || h->sps.pic_struct_present_flag){ + /* Use picture timing SEI information. Even if it is a information of a past frame, better than nothing. */ + if(h->sei_pic_struct == SEI_PIC_STRUCT_TOP_BOTTOM + || h->sei_pic_struct == SEI_PIC_STRUCT_TOP_BOTTOM_TOP) + cur->top_field_first = 1; + else + cur->top_field_first = 0; + }else{ + /* Most likely progressive */ + cur->top_field_first = 0; + } + } + + //FIXME do something with unavailable reference frames + + /* Sort B-frames into display order */ + + if(h->sps.bitstream_restriction_flag + && s->avctx->has_b_frames < h->sps.num_reorder_frames){ + s->avctx->has_b_frames = h->sps.num_reorder_frames; + s->low_delay = 0; + } + + if( s->avctx->strict_std_compliance >= FF_COMPLIANCE_STRICT + && !h->sps.bitstream_restriction_flag){ + s->avctx->has_b_frames= MAX_DELAYED_PIC_COUNT; + s->low_delay= 0; + } + + pics = 0; + while(h->delayed_pic[pics]) pics++; + + assert(pics <= MAX_DELAYED_PIC_COUNT); + + h->delayed_pic[pics++] = cur; + if(cur->reference == 0) + cur->reference = DELAYED_PIC_REF; + + out = h->delayed_pic[0]; + out_idx = 0; + for(i=1; h->delayed_pic[i] && !h->delayed_pic[i]->key_frame && !h->delayed_pic[i]->mmco_reset; i++) + if(h->delayed_pic[i]->poc < out->poc){ + out = h->delayed_pic[i]; + out_idx = i; + } + if(s->avctx->has_b_frames == 0 && (h->delayed_pic[0]->key_frame || h->delayed_pic[0]->mmco_reset)) + h->next_outputed_poc= INT_MIN; + out_of_order = out->poc < h->next_outputed_poc; + + if(h->sps.bitstream_restriction_flag && s->avctx->has_b_frames >= h->sps.num_reorder_frames) + { } + else if((out_of_order && pics-1 == s->avctx->has_b_frames && s->avctx->has_b_frames < MAX_DELAYED_PIC_COUNT) + || (s->low_delay && + ((h->next_outputed_poc != INT_MIN && out->poc > h->next_outputed_poc + 2) + || cur->pict_type == AV_PICTURE_TYPE_B))) + { + s->low_delay = 0; + s->avctx->has_b_frames++; + } + + if(out_of_order || pics > s->avctx->has_b_frames){ + out->reference &= ~DELAYED_PIC_REF; + out->owner2 = s; // for frame threading, the owner must be the second field's thread + // or else the first thread can release the picture and reuse it unsafely + for(i=out_idx; h->delayed_pic[i]; i++) + h->delayed_pic[i] = h->delayed_pic[i+1]; + } + if(!out_of_order && pics > s->avctx->has_b_frames){ + h->next_output_pic = out; + if(out_idx==0 && h->delayed_pic[0] && (h->delayed_pic[0]->key_frame || h->delayed_pic[0]->mmco_reset)) { + h->next_outputed_poc = INT_MIN; + } else + h->next_outputed_poc = out->poc; + }else{ + av_log(s->avctx, AV_LOG_DEBUG, "no picture\n"); + } + + if (setup_finished) + ff_thread_finish_setup(s->avctx); +} + static inline void backup_mb_border(H264Context *h, uint8_t *src_y, uint8_t *src_cb, uint8_t *src_cr, int linesize, int uvlinesize, int simple){ MpegEncContext * const s = &h->s; uint8_t *top_border; @@ -1573,7 +1999,7 @@ static void flush_dpb(AVCodecContext *avctx){ h->delayed_pic[i]->reference= 0; h->delayed_pic[i]= NULL; } - h->outputed_poc= INT_MIN; + h->outputed_poc=h->next_outputed_poc= INT_MIN; h->prev_interlaced_frame = 1; idr(h); if(h->s.current_picture_ptr) @@ -1697,24 +2123,28 @@ static void init_scan_tables(H264Context *h){ } } -static void field_end(H264Context *h){ +static void field_end(H264Context *h, int in_setup){ MpegEncContext * const s = &h->s; AVCodecContext * const avctx= s->avctx; s->mb_y= 0; - s->current_picture_ptr->qscale_type= FF_QSCALE_TYPE_H264; - s->current_picture_ptr->pict_type= s->pict_type; + if (!in_setup && !s->dropable) + ff_thread_report_progress((AVFrame*)s->current_picture_ptr, (16*s->mb_height >> FIELD_PICTURE) - 1, + s->picture_structure==PICT_BOTTOM_FIELD); if (CONFIG_H264_VDPAU_DECODER && s->avctx->codec->capabilities&CODEC_CAP_HWACCEL_VDPAU) ff_vdpau_h264_set_reference_frames(s); - if(!s->dropable) { - ff_h264_execute_ref_pic_marking(h, h->mmco, h->mmco_index); - h->prev_poc_msb= h->poc_msb; - h->prev_poc_lsb= h->poc_lsb; + if(in_setup || !(avctx->active_thread_type&FF_THREAD_FRAME)){ + if(!s->dropable) { + ff_h264_execute_ref_pic_marking(h, h->mmco, h->mmco_index); + h->prev_poc_msb= h->poc_msb; + h->prev_poc_lsb= h->poc_lsb; + } + h->prev_frame_num_offset= h->frame_num_offset; + h->prev_frame_num= h->frame_num; + h->outputed_poc = h->next_outputed_poc; } - h->prev_frame_num_offset= h->frame_num_offset; - h->prev_frame_num= h->frame_num; if (avctx->hwaccel) { if (avctx->hwaccel->end_frame(avctx) < 0) @@ -1831,7 +2261,7 @@ static int decode_slice_header(H264Context *h, H264Context *h0){ if(first_mb_in_slice == 0){ //FIXME better field boundary detection if(h0->current_slice && FIELD_PICTURE){ - field_end(h); + field_end(h, 1); } h0->current_slice = 0; @@ -1900,8 +2330,10 @@ static int decode_slice_header(H264Context *h, H264Context *h0){ if (s->context_initialized && ( s->width != s->avctx->width || s->height != s->avctx->height || av_cmp_q(h->sps.sar, s->avctx->sample_aspect_ratio))) { - if(h != h0) + if(h != h0) { + av_log_missing_feature(s->avctx, "Width/height changing with threads is", 0); return -1; // width / height changed during parallelized decoding + } free_tables(h, 0); flush_dpb(s->avctx); MPV_common_end(s); @@ -1960,22 +2392,27 @@ static int decode_slice_header(H264Context *h, H264Context *h0){ init_scan_tables(h); ff_h264_alloc_tables(h); - for(i = 1; i < s->avctx->thread_count; i++) { - H264Context *c; - c = h->thread_context[i] = av_malloc(sizeof(H264Context)); - memcpy(c, h->s.thread_context[i], sizeof(MpegEncContext)); - memset(&c->s + 1, 0, sizeof(H264Context) - sizeof(MpegEncContext)); - c->h264dsp = h->h264dsp; - c->sps = h->sps; - c->pps = h->pps; - c->pixel_shift = h->pixel_shift; - init_scan_tables(c); - clone_tables(c, h, i); - } - - for(i = 0; i < s->avctx->thread_count; i++) - if(context_init(h->thread_context[i]) < 0) + if (!HAVE_THREADS || !(s->avctx->active_thread_type&FF_THREAD_SLICE)) { + if (context_init(h) < 0) return -1; + } else { + for(i = 1; i < s->avctx->thread_count; i++) { + H264Context *c; + c = h->thread_context[i] = av_malloc(sizeof(H264Context)); + memcpy(c, h->s.thread_context[i], sizeof(MpegEncContext)); + memset(&c->s + 1, 0, sizeof(H264Context) - sizeof(MpegEncContext)); + c->h264dsp = h->h264dsp; + c->sps = h->sps; + c->pps = h->pps; + c->pixel_shift = h->pixel_shift; + init_scan_tables(c); + clone_tables(c, h, i); + } + + for(i = 0; i < s->avctx->thread_count; i++) + if(context_init(h->thread_context[i]) < 0) + return -1; + } } h->frame_num= get_bits(&s->gb, h->sps.log2_max_frame_num); @@ -1996,6 +2433,10 @@ static int decode_slice_header(H264Context *h, H264Context *h0){ h->mb_field_decoding_flag= s->picture_structure != PICT_FRAME; if(h0->current_slice == 0){ + if(h->frame_num != h->prev_frame_num && + (h->prev_frame_num+1)%(1<<h->sps.log2_max_frame_num) < (h->frame_num - h->sps.ref_frame_count)) + h->prev_frame_num = h->frame_num - h->sps.ref_frame_count - 1; + while(h->frame_num != h->prev_frame_num && h->frame_num != (h->prev_frame_num+1)%(1<<h->sps.log2_max_frame_num)){ Picture *prev = h->short_ref_count ? h->short_ref[0] : NULL; @@ -2005,6 +2446,8 @@ static int decode_slice_header(H264Context *h, H264Context *h0){ h->prev_frame_num++; h->prev_frame_num %= 1<<h->sps.log2_max_frame_num; s->current_picture_ptr->frame_num= h->prev_frame_num; + ff_thread_report_progress((AVFrame*)s->current_picture_ptr, INT_MAX, 0); + ff_thread_report_progress((AVFrame*)s->current_picture_ptr, INT_MAX, 1); ff_generate_sliding_window_mmcos(h); ff_h264_execute_ref_pic_marking(h, h->mmco, h->mmco_index); /* Error concealment: if a ref is missing, copy the previous ref in its place. @@ -2064,9 +2507,13 @@ static int decode_slice_header(H264Context *h, H264Context *h0){ s0->first_field = FIELD_PICTURE; } - if((!FIELD_PICTURE || s0->first_field) && ff_h264_frame_start(h) < 0) { - s0->first_field = 0; - return -1; + if(!FIELD_PICTURE || s0->first_field) { + if (ff_h264_frame_start(h) < 0) { + s0->first_field = 0; + return -1; + } + } else { + ff_release_unused_pictures(s, 0); } } if(h != h0) @@ -2309,7 +2756,8 @@ static int decode_slice_header(H264Context *h, H264Context *h0){ +(h->ref_list[j][i].reference&3); } - h->emu_edge_width= (s->flags&CODEC_FLAG_EMU_EDGE) ? 0 : 16; + //FIXME: fix draw_edges+PAFF+frame threads + h->emu_edge_width= (s->flags&CODEC_FLAG_EMU_EDGE || (!h->sps.frame_mbs_only_flag && s->avctx->active_thread_type)) ? 0 : 16; h->emu_edge_height= (FRAME_MBAFF || FIELD_PICTURE) ? 0 : h->emu_edge_width; if(s->avctx->debug&FF_DEBUG_PICT_INFO){ @@ -2631,6 +3079,40 @@ static void predict_field_decoding_flag(H264Context *h){ h->mb_mbaff = h->mb_field_decoding_flag = IS_INTERLACED(mb_type) ? 1 : 0; } +/** + * Draw edges and report progress for the last MB row. + */ +static void decode_finish_row(H264Context *h){ + MpegEncContext * const s = &h->s; + int top = 16*(s->mb_y >> FIELD_PICTURE); + int height = 16 << FRAME_MBAFF; + int deblock_border = (16 + 4) << FRAME_MBAFF; + int pic_height = 16*s->mb_height >> FIELD_PICTURE; + + if (h->deblocking_filter) { + if((top + height) >= pic_height) + height += deblock_border; + + top -= deblock_border; + } + + if (top >= pic_height || (top + height) < h->emu_edge_height) + return; + + height = FFMIN(height, pic_height - top); + if (top < h->emu_edge_height) { + height = top+height; + top = 0; + } + + ff_draw_horiz_band(s, top, height); + + if (s->dropable) return; + + ff_thread_report_progress((AVFrame*)s->current_picture_ptr, top + height - 1, + s->picture_structure==PICT_BOTTOM_FIELD); +} + static int decode_slice(struct AVCodecContext *avctx, void *arg){ H264Context *h = *(void**)arg; MpegEncContext * const s = &h->s; @@ -2686,7 +3168,7 @@ static int decode_slice(struct AVCodecContext *avctx, void *arg){ if( ++s->mb_x >= s->mb_width ) { loop_filter(h, lf_x_start, s->mb_x); s->mb_x = lf_x_start = 0; - ff_draw_horiz_band(s, 16*s->mb_y, 16); + decode_finish_row(h); ++s->mb_y; if(FIELD_OR_MBAFF_PICTURE) { ++s->mb_y; @@ -2726,7 +3208,7 @@ static int decode_slice(struct AVCodecContext *avctx, void *arg){ if(++s->mb_x >= s->mb_width){ loop_filter(h, lf_x_start, s->mb_x); s->mb_x = lf_x_start = 0; - ff_draw_horiz_band(s, 16*s->mb_y, 16); + decode_finish_row(h); ++s->mb_y; if(FIELD_OR_MBAFF_PICTURE) { ++s->mb_y; @@ -2855,12 +3337,15 @@ static void execute_decode_slices(H264Context *h, int context_count){ static int decode_nal_units(H264Context *h, const uint8_t *buf, int buf_size){ MpegEncContext * const s = &h->s; AVCodecContext * const avctx= s->avctx; - int buf_index=0; H264Context *hx; ///< thread context - int context_count = 0; - int next_avc= h->is_avc ? 0 : buf_size; + int buf_index; + int context_count; + int next_avc; + int pass = !(avctx->active_thread_type & FF_THREAD_FRAME); + int nals_needed=0; ///< number of NALs that need decoding before the next frame thread starts + int nal_index; - h->max_contexts = avctx->thread_count; + h->max_contexts = (HAVE_THREADS && (s->avctx->active_thread_type&FF_THREAD_SLICE)) ? avctx->thread_count : 1; if(!(s->flags2 & CODEC_FLAG2_CHUNKS)){ h->current_slice = 0; if (!s->first_field) @@ -2868,6 +3353,11 @@ static int decode_nal_units(H264Context *h, const uint8_t *buf, int buf_size){ ff_h264_reset_sei(h); } + for(;pass <= 1;pass++){ + buf_index = 0; + context_count = 0; + next_avc = h->is_avc ? 0 : buf_size; + nal_index = 0; for(;;){ int consumed; int dst_length; @@ -2926,6 +3416,19 @@ static int decode_nal_units(H264Context *h, const uint8_t *buf, int buf_size){ } buf_index += consumed; + nal_index++; + + if(pass == 0) { + // packets can sometimes contain multiple PPS/SPS + // e.g. two PAFF field pictures in one packet, or a demuxer which splits NALs strangely + // if so, when frame threading we can't start the next thread until we've read all of them + switch (hx->nal_unit_type) { + case NAL_SPS: + case NAL_PPS: + nals_needed = nal_index; + } + continue; + } //FIXME do not discard SEI id if(avctx->skip_frame >= AVDISCARD_NONREF && h->nal_ref_idc == 0) @@ -2949,16 +3452,21 @@ static int decode_nal_units(H264Context *h, const uint8_t *buf, int buf_size){ if((err = decode_slice_header(hx, h))) break; + s->current_picture_ptr->key_frame |= + (hx->nal_unit_type == NAL_IDR_SLICE) || + (h->sei_recovery_frame_cnt >= 0); + if (h->current_slice == 1) { + if(!(s->flags2 & CODEC_FLAG2_CHUNKS)) { + decode_postinit(h, nal_index >= nals_needed); + } + if (s->avctx->hwaccel && s->avctx->hwaccel->start_frame(s->avctx, NULL, 0) < 0) return -1; if(CONFIG_H264_VDPAU_DECODER && s->avctx->codec->capabilities&CODEC_CAP_HWACCEL_VDPAU) ff_vdpau_h264_picture_start(s); } - s->current_picture_ptr->key_frame |= - (hx->nal_unit_type == NAL_IDR_SLICE) || - (h->sei_recovery_frame_cnt >= 0); if(hx->redundant_pic_count==0 && (avctx->skip_frame < AVDISCARD_NONREF || hx->nal_ref_idc) && (avctx->skip_frame < AVDISCARD_BIDIR || hx->slice_type_nos!=AV_PICTURE_TYPE_B) @@ -3066,6 +3574,7 @@ static int decode_nal_units(H264Context *h, const uint8_t *buf, int buf_size){ goto again; } } + } if(context_count) execute_decode_slices(h, context_count); return buf_index; @@ -3101,6 +3610,8 @@ static int decode_frame(AVCodecContext *avctx, Picture *out; int i, out_idx; + s->current_picture_ptr = NULL; + //FIXME factorize this with the output code below out = h->delayed_pic[0]; out_idx = 0; @@ -3138,143 +3649,18 @@ static int decode_frame(AVCodecContext *avctx, } if(!(s->flags2 & CODEC_FLAG2_CHUNKS) || (s->mb_y >= s->mb_height && s->mb_height)){ - Picture *out = s->current_picture_ptr; - Picture *cur = s->current_picture_ptr; - int i, pics, out_of_order, out_idx; - field_end(h); + if(s->flags2 & CODEC_FLAG2_CHUNKS) decode_postinit(h, 1); + + field_end(h, 0); - if (cur->field_poc[0]==INT_MAX || cur->field_poc[1]==INT_MAX) { + if (!h->next_output_pic) { /* Wait for second field. */ *data_size = 0; } else { - cur->interlaced_frame = 0; - cur->repeat_pict = 0; - - /* Signal interlacing information externally. */ - /* Prioritize picture timing SEI information over used decoding process if it exists. */ - - if(h->sps.pic_struct_present_flag){ - switch (h->sei_pic_struct) - { - case SEI_PIC_STRUCT_FRAME: - break; - case SEI_PIC_STRUCT_TOP_FIELD: - case SEI_PIC_STRUCT_BOTTOM_FIELD: - cur->interlaced_frame = 1; - break; - case SEI_PIC_STRUCT_TOP_BOTTOM: - case SEI_PIC_STRUCT_BOTTOM_TOP: - if (FIELD_OR_MBAFF_PICTURE) - cur->interlaced_frame = 1; - else - // try to flag soft telecine progressive - cur->interlaced_frame = h->prev_interlaced_frame; - break; - case SEI_PIC_STRUCT_TOP_BOTTOM_TOP: - case SEI_PIC_STRUCT_BOTTOM_TOP_BOTTOM: - // Signal the possibility of telecined film externally (pic_struct 5,6) - // From these hints, let the applications decide if they apply deinterlacing. - cur->repeat_pict = 1; - break; - case SEI_PIC_STRUCT_FRAME_DOUBLING: - // Force progressive here, as doubling interlaced frame is a bad idea. - cur->repeat_pict = 2; - break; - case SEI_PIC_STRUCT_FRAME_TRIPLING: - cur->repeat_pict = 4; - break; - } - - if ((h->sei_ct_type & 3) && h->sei_pic_struct <= SEI_PIC_STRUCT_BOTTOM_TOP) - cur->interlaced_frame = (h->sei_ct_type & (1<<1)) != 0; - }else{ - /* Derive interlacing flag from used decoding process. */ - cur->interlaced_frame = FIELD_OR_MBAFF_PICTURE; - } - h->prev_interlaced_frame = cur->interlaced_frame; - - if (cur->field_poc[0] != cur->field_poc[1]){ - /* Derive top_field_first from field pocs. */ - cur->top_field_first = cur->field_poc[0] < cur->field_poc[1]; - }else{ - if(cur->interlaced_frame || h->sps.pic_struct_present_flag){ - /* Use picture timing SEI information. Even if it is a information of a past frame, better than nothing. */ - if(h->sei_pic_struct == SEI_PIC_STRUCT_TOP_BOTTOM - || h->sei_pic_struct == SEI_PIC_STRUCT_TOP_BOTTOM_TOP) - cur->top_field_first = 1; - else - cur->top_field_first = 0; - }else{ - /* Most likely progressive */ - cur->top_field_first = 0; - } - } - - //FIXME do something with unavailable reference frames - - /* Sort B-frames into display order */ - - if(h->sps.bitstream_restriction_flag - && s->avctx->has_b_frames < h->sps.num_reorder_frames){ - s->avctx->has_b_frames = h->sps.num_reorder_frames; - s->low_delay = 0; - } - - if( s->avctx->strict_std_compliance >= FF_COMPLIANCE_STRICT - && !h->sps.bitstream_restriction_flag){ - s->avctx->has_b_frames= MAX_DELAYED_PIC_COUNT; - s->low_delay= 0; - } - - pics = 0; - while(h->delayed_pic[pics]) pics++; - - assert(pics <= MAX_DELAYED_PIC_COUNT); - - h->delayed_pic[pics++] = cur; - if(cur->reference == 0) - cur->reference = DELAYED_PIC_REF; - - out = h->delayed_pic[0]; - out_idx = 0; - for(i=1; h->delayed_pic[i] && !h->delayed_pic[i]->key_frame && !h->delayed_pic[i]->mmco_reset; i++) - if(h->delayed_pic[i]->poc < out->poc){ - out = h->delayed_pic[i]; - out_idx = i; - } - if(s->avctx->has_b_frames == 0 && (h->delayed_pic[0]->key_frame || h->delayed_pic[0]->mmco_reset)) - h->outputed_poc= INT_MIN; - out_of_order = out->poc < h->outputed_poc; - - if(h->sps.bitstream_restriction_flag && s->avctx->has_b_frames >= h->sps.num_reorder_frames) - { } - else if((out_of_order && pics-1 == s->avctx->has_b_frames && s->avctx->has_b_frames < MAX_DELAYED_PIC_COUNT) - || (s->low_delay && - ((h->outputed_poc != INT_MIN && out->poc > h->outputed_poc + 2) - || cur->pict_type == AV_PICTURE_TYPE_B))) - { - s->low_delay = 0; - s->avctx->has_b_frames++; - } - - if(out_of_order || pics > s->avctx->has_b_frames){ - out->reference &= ~DELAYED_PIC_REF; - for(i=out_idx; h->delayed_pic[i]; i++) - h->delayed_pic[i] = h->delayed_pic[i+1]; - } - if(!out_of_order && pics > s->avctx->has_b_frames){ - *data_size = sizeof(AVFrame); - - if(out_idx==0 && h->delayed_pic[0] && (h->delayed_pic[0]->key_frame || h->delayed_pic[0]->mmco_reset)) { - h->outputed_poc = INT_MIN; - } else - h->outputed_poc = out->poc; - *pict= *(AVFrame*)out; - }else{ - av_log(avctx, AV_LOG_DEBUG, "no picture\n"); - } + *data_size = sizeof(AVFrame); + *pict = *(AVFrame*)h->next_output_pic; } } @@ -3534,9 +3920,11 @@ AVCodec ff_h264_decoder = { ff_h264_decode_end, decode_frame, /*CODEC_CAP_DRAW_HORIZ_BAND |*/ CODEC_CAP_DR1 | CODEC_CAP_DELAY | - CODEC_CAP_SLICE_THREADS, + CODEC_CAP_SLICE_THREADS | CODEC_CAP_FRAME_THREADS, .flush= flush_dpb, .long_name = NULL_IF_CONFIG_SMALL("H.264 / AVC / MPEG-4 AVC / MPEG-4 part 10"), + .init_thread_copy = ONLY_IF_THREADS_ENABLED(decode_init_thread_copy), + .update_thread_context = ONLY_IF_THREADS_ENABLED(decode_update_thread_context), .profiles = NULL_IF_CONFIG_SMALL(profiles), }; |