making act segmenter

1 files changed, 0 insertions, 398 deletions

diff --git a/ffmpeg1/libavcodec/h264_parser.c b/ffmpeg1/libavcodec/h264_parser.c
deleted file mode 100644
index 44b92b7..0000000
--- a/ffmpeg1/libavcodec/h264_parser.c
+++ /dev/null
@@ -1,398 +0,0 @@
-/*
- * H.26L/H.264/AVC/JVT/14496-10/... parser
- * Copyright (c) 2003 Michael Niedermayer <michaelni@gmx.at>
- *
- * This file is part of FFmpeg.
- *
- * FFmpeg 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.
- *
- * FFmpeg 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 FFmpeg; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
- */
-
-/**
- * @file
- * H.264 / AVC / MPEG4 part10 parser.
- * @author Michael Niedermayer <michaelni@gmx.at>
- */
-
-#define UNCHECKED_BITSTREAM_READER 1
-
-#include "parser.h"
-#include "h264data.h"
-#include "golomb.h"
-
-
-static int ff_h264_find_frame_end(H264Context *h, const uint8_t *buf, int buf_size)
-{
-    int i, j;
-    uint32_t state;
-    ParseContext *pc = &h->parse_context;
-    int next_avc= h->is_avc ? 0 : buf_size;
-
-//    mb_addr= pc->mb_addr - 1;
-    state= pc->state;
-    if(state>13)
-        state= 7;
-
-    if(h->is_avc && !h->nal_length_size)
-        av_log(h->avctx, AV_LOG_ERROR, "AVC-parser: nal length size invalid\n");
-
-    for(i=0; i<buf_size; i++){
-        if(i >= next_avc) {
-            int nalsize = 0;
-            i = next_avc;
-            for(j = 0; j < h->nal_length_size; j++)
-                nalsize = (nalsize << 8) | buf[i++];
-            if(nalsize <= 0 || nalsize > buf_size - i){
-                av_log(h->avctx, AV_LOG_ERROR, "AVC-parser: nal size %d remaining %d\n", nalsize, buf_size - i);
-                return buf_size;
-            }
-            next_avc= i + nalsize;
-            state= 5;
-        }
-
-        if(state==7){
-#if HAVE_FAST_UNALIGNED
-        /* we check i<buf_size instead of i+3/7 because its simpler
-         * and there should be FF_INPUT_BUFFER_PADDING_SIZE bytes at the end
-         */
-#    if HAVE_FAST_64BIT
-            while(i<next_avc && !((~*(const uint64_t*)(buf+i) & (*(const uint64_t*)(buf+i) - 0x0101010101010101ULL)) & 0x8080808080808080ULL))
-                i+=8;
-#    else
-            while(i<next_avc && !((~*(const uint32_t*)(buf+i) & (*(const uint32_t*)(buf+i) - 0x01010101U)) & 0x80808080U))
-                i+=4;
-#    endif
-#endif
-            for(; i<next_avc; i++){
-                if(!buf[i]){
-                    state=2;
-                    break;
-                }
-            }
-        }else if(state<=2){
-            if(buf[i]==1)   state^= 5; //2->7, 1->4, 0->5
-            else if(buf[i]) state = 7;
-            else            state>>=1; //2->1, 1->0, 0->0
-        }else if(state<=5){
-            int v= buf[i] & 0x1F;
-            if(v==6 || v==7 || v==8 || v==9){
-                if(pc->frame_start_found){
-                    i++;
-                    goto found;
-                }
-            }else if(v==1 || v==2 || v==5){
-                state+=8;
-                continue;
-            }
-            state= 7;
-        }else{
-            h->parse_history[h->parse_history_count++]= buf[i];
-            if(h->parse_history_count>3){
-                unsigned int mb, last_mb= h->parse_last_mb;
-                GetBitContext gb;
-
-                init_get_bits(&gb, h->parse_history, 8*h->parse_history_count);
-                h->parse_history_count=0;
-                mb= get_ue_golomb_long(&gb);
-                last_mb= h->parse_last_mb;
-                h->parse_last_mb= mb;
-                if(pc->frame_start_found){
-                    if(mb <= last_mb)
-                        goto found;
-                }else
-                    pc->frame_start_found = 1;
-                state= 7;
-            }
-        }
-    }
-    pc->state= state;
-    if(h->is_avc)
-        return next_avc;
-    return END_NOT_FOUND;
-
-found:
-    pc->state=7;
-    pc->frame_start_found= 0;
-    if(h->is_avc)
-        return next_avc;
-    return i-(state&5) - 3*(state>7);
-}
-
-/**
- * Parse NAL units of found picture and decode some basic information.
- *
- * @param s parser context.
- * @param avctx codec context.
- * @param buf buffer with field/frame data.
- * @param buf_size size of the buffer.
- */
-static inline int parse_nal_units(AVCodecParserContext *s,
-                                  AVCodecContext *avctx,
-                                  const uint8_t *buf, int buf_size)
-{
-    H264Context *h = s->priv_data;
-    const uint8_t *buf_end = buf + buf_size;
-    unsigned int pps_id;
-    unsigned int slice_type;
-    int state = -1;
-    const uint8_t *ptr;
-    int q264 = buf_size >=4 && !memcmp("Q264", buf, 4);
-
-    /* set some sane default values */
-    s->pict_type = AV_PICTURE_TYPE_I;
-    s->key_frame = 0;
-
-    h->avctx= avctx;
-    h->sei_recovery_frame_cnt = -1;
-    h->sei_dpb_output_delay         =  0;
-    h->sei_cpb_removal_delay        = -1;
-    h->sei_buffering_period_present =  0;
-
-    if (!buf_size)
-        return 0;
-
-    for(;;) {
-        int src_length, dst_length, consumed, nalsize = 0;
-        if (h->is_avc) {
-            int i;
-            if (h->nal_length_size >= buf_end - buf) break;
-            nalsize = 0;
-            for (i = 0; i < h->nal_length_size; i++)
-                nalsize = (nalsize << 8) | *buf++;
-            if (nalsize <= 0 || nalsize > buf_end - buf) {
-                av_log(h->avctx, AV_LOG_ERROR, "AVC: nal size %d\n", nalsize);
-                break;
-            }
-            src_length = nalsize;
-        } else {
-        buf = avpriv_mpv_find_start_code(buf, buf_end, &state);
-        if(buf >= buf_end)
-            break;
-        --buf;
-        src_length = buf_end - buf;
-        }
-        switch (state & 0x1f) {
-        case NAL_SLICE:
-        case NAL_IDR_SLICE:
-            // Do not walk the whole buffer just to decode slice header
-            if (src_length > 20)
-                src_length = 20;
-            break;
-        }
-        ptr= ff_h264_decode_nal(h, buf, &dst_length, &consumed, src_length);
-        if (ptr==NULL || dst_length < 0)
-            break;
-
-        init_get_bits(&h->gb, ptr, 8*dst_length);
-        switch(h->nal_unit_type) {
-        case NAL_SPS:
-            ff_h264_decode_seq_parameter_set(h);
-            break;
-        case NAL_PPS:
-            ff_h264_decode_picture_parameter_set(h, h->gb.size_in_bits);
-            break;
-        case NAL_SEI:
-            ff_h264_decode_sei(h);
-            break;
-        case NAL_IDR_SLICE:
-            s->key_frame = 1;
-            /* fall through */
-        case NAL_SLICE:
-            get_ue_golomb_long(&h->gb);  // skip first_mb_in_slice
-            slice_type = get_ue_golomb_31(&h->gb);
-            s->pict_type = golomb_to_pict_type[slice_type % 5];
-            if (h->sei_recovery_frame_cnt >= 0) {
-                /* key frame, since recovery_frame_cnt is set */
-                s->key_frame = 1;
-            }
-            pps_id= get_ue_golomb(&h->gb);
-            if(pps_id>=MAX_PPS_COUNT) {
-                av_log(h->avctx, AV_LOG_ERROR, "pps_id out of range\n");
-                return -1;
-            }
-            if(!h->pps_buffers[pps_id]) {
-                av_log(h->avctx, AV_LOG_ERROR, "non-existing PPS referenced\n");
-                return -1;
-            }
-            h->pps= *h->pps_buffers[pps_id];
-            if(!h->sps_buffers[h->pps.sps_id]) {
-                av_log(h->avctx, AV_LOG_ERROR, "non-existing SPS referenced\n");
-                return -1;
-            }
-            h->sps = *h->sps_buffers[h->pps.sps_id];
-            h->frame_num = get_bits(&h->gb, h->sps.log2_max_frame_num);
-
-            avctx->profile = ff_h264_get_profile(&h->sps);
-            avctx->level   = h->sps.level_idc;
-
-            if(h->sps.frame_mbs_only_flag){
-                h->picture_structure= PICT_FRAME;
-            }else{
-                if(get_bits1(&h->gb)) { //field_pic_flag
-                    h->picture_structure= PICT_TOP_FIELD + get_bits1(&h->gb); //bottom_field_flag
-                } else {
-                    h->picture_structure= PICT_FRAME;
-                }
-            }
-
-            if(h->sps.pic_struct_present_flag) {
-                switch (h->sei_pic_struct) {
-                    case SEI_PIC_STRUCT_TOP_FIELD:
-                    case SEI_PIC_STRUCT_BOTTOM_FIELD:
-                        s->repeat_pict = 0;
-                        break;
-                    case SEI_PIC_STRUCT_FRAME:
-                    case SEI_PIC_STRUCT_TOP_BOTTOM:
-                    case SEI_PIC_STRUCT_BOTTOM_TOP:
-                        s->repeat_pict = 1;
-                        break;
-                    case SEI_PIC_STRUCT_TOP_BOTTOM_TOP:
-                    case SEI_PIC_STRUCT_BOTTOM_TOP_BOTTOM:
-                        s->repeat_pict = 2;
-                        break;
-                    case SEI_PIC_STRUCT_FRAME_DOUBLING:
-                        s->repeat_pict = 3;
-                        break;
-                    case SEI_PIC_STRUCT_FRAME_TRIPLING:
-                        s->repeat_pict = 5;
-                        break;
-                    default:
-                        s->repeat_pict = h->picture_structure == PICT_FRAME ? 1 : 0;
-                        break;
-                }
-            } else {
-                s->repeat_pict = h->picture_structure == PICT_FRAME ? 1 : 0;
-            }
-
-            return 0; /* no need to evaluate the rest */
-        }
-        buf += h->is_avc ? nalsize : consumed;
-    }
-    if (q264)
-        return 0;
-    /* didn't find a picture! */
-    av_log(h->avctx, AV_LOG_ERROR, "missing picture in access unit with size %d\n", buf_size);
-    return -1;
-}
-
-static int h264_parse(AVCodecParserContext *s,
-                      AVCodecContext *avctx,
-                      const uint8_t **poutbuf, int *poutbuf_size,
-                      const uint8_t *buf, int buf_size)
-{
-    H264Context *h = s->priv_data;
-    ParseContext *pc = &h->parse_context;
-    int next;
-
-    if (!h->got_first) {
-        h->got_first = 1;
-        if (avctx->extradata_size) {
-            h->avctx = avctx;
-            // must be done like in decoder, otherwise opening the parser,
-            // letting it create extradata and then closing and opening again
-            // will cause has_b_frames to be always set.
-            // Note that estimate_timings_from_pts does exactly this.
-            if (!avctx->has_b_frames)
-                h->low_delay = 1;
-            ff_h264_decode_extradata(h, avctx->extradata, avctx->extradata_size);
-        }
-    }
-
-    if(s->flags & PARSER_FLAG_COMPLETE_FRAMES){
-        next= buf_size;
-    }else{
-        next= ff_h264_find_frame_end(h, buf, buf_size);
-
-        if (ff_combine_frame(pc, next, &buf, &buf_size) < 0) {
-            *poutbuf = NULL;
-            *poutbuf_size = 0;
-            return buf_size;
-        }
-
-        if(next<0 && next != END_NOT_FOUND){
-            av_assert1(pc->last_index + next >= 0 );
-            ff_h264_find_frame_end(h, &pc->buffer[pc->last_index + next], -next); //update state
-        }
-    }
-
-    parse_nal_units(s, avctx, buf, buf_size);
-
-    if (h->sei_cpb_removal_delay >= 0) {
-        s->dts_sync_point    = h->sei_buffering_period_present;
-        s->dts_ref_dts_delta = h->sei_cpb_removal_delay;
-        s->pts_dts_delta     = h->sei_dpb_output_delay;
-    } else {
-        s->dts_sync_point    = INT_MIN;
-        s->dts_ref_dts_delta = INT_MIN;
-        s->pts_dts_delta     = INT_MIN;
-    }
-
-    if (s->flags & PARSER_FLAG_ONCE) {
-        s->flags &= PARSER_FLAG_COMPLETE_FRAMES;
-    }
-
-    *poutbuf = buf;
-    *poutbuf_size = buf_size;
-    return next;
-}
-
-static int h264_split(AVCodecContext *avctx,
-                      const uint8_t *buf, int buf_size)
-{
-    int i;
-    uint32_t state = -1;
-    int has_sps= 0;
-
-    for(i=0; i<=buf_size; i++){
-        if((state&0xFFFFFF1F) == 0x107)
-            has_sps=1;
-/*        if((state&0xFFFFFF1F) == 0x101 || (state&0xFFFFFF1F) == 0x102 || (state&0xFFFFFF1F) == 0x105){
-        }*/
-        if((state&0xFFFFFF00) == 0x100 && (state&0xFFFFFF1F) != 0x107 && (state&0xFFFFFF1F) != 0x108 && (state&0xFFFFFF1F) != 0x109){
-            if(has_sps){
-                while(i>4 && buf[i-5]==0) i--;
-                return i-4;
-            }
-        }
-        if (i<buf_size)
-            state= (state<<8) | buf[i];
-    }
-    return 0;
-}
-
-static void close(AVCodecParserContext *s)
-{
-    H264Context *h = s->priv_data;
-    ParseContext *pc = &h->parse_context;
-
-    av_free(pc->buffer);
-    ff_h264_free_context(h);
-}
-
-static int init(AVCodecParserContext *s)
-{
-    H264Context *h = s->priv_data;
-    h->thread_context[0] = h;
-    h->slice_context_count = 1;
-    return 0;
-}
-
-AVCodecParser ff_h264_parser = {
-    .codec_ids      = { AV_CODEC_ID_H264 },
-    .priv_data_size = sizeof(H264Context),
-    .parser_init    = init,
-    .parser_parse   = h264_parse,
-    .parser_close   = close,
-    .split          = h264_split,
-};