making act segmenter

1 files changed, 544 insertions, 0 deletions

diff --git a/ffmpeg/libavcodec/mjpegenc.c b/ffmpeg/libavcodec/mjpegenc.c
new file mode 100644
index 0000000..80a4022
--- /dev/null
+++ b/ffmpeg/libavcodec/mjpegenc.c
@@ -0,0 +1,544 @@
+/*
+ * MJPEG encoder
+ * Copyright (c) 2000, 2001 Fabrice Bellard
+ * Copyright (c) 2003 Alex Beregszaszi
+ * Copyright (c) 2003-2004 Michael Niedermayer
+ *
+ * Support for external huffman table, various fixes (AVID workaround),
+ * aspecting, new decode_frame mechanism and apple mjpeg-b support
+ *                                  by Alex Beregszaszi
+ *
+ * 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
+ * MJPEG encoder.
+ */
+
+#include "avcodec.h"
+#include "mpegvideo.h"
+#include "mjpeg.h"
+#include "mjpegenc.h"
+
+/* use two quantizer tables (one for luminance and one for chrominance) */
+/* not yet working */
+#undef TWOMATRIXES
+
+
+av_cold int ff_mjpeg_encode_init(MpegEncContext *s)
+{
+    MJpegContext *m;
+
+    if (s->width > 65500 || s->height > 65500) {
+        av_log(s, AV_LOG_ERROR, "JPEG does not support resolutions above 65500x65500\n");
+        return -1;
+    }
+
+    m = av_malloc(sizeof(MJpegContext));
+    if (!m)
+        return -1;
+
+    s->min_qcoeff=-1023;
+    s->max_qcoeff= 1023;
+
+    /* build all the huffman tables */
+    ff_mjpeg_build_huffman_codes(m->huff_size_dc_luminance,
+                                 m->huff_code_dc_luminance,
+                                 avpriv_mjpeg_bits_dc_luminance,
+                                 avpriv_mjpeg_val_dc);
+    ff_mjpeg_build_huffman_codes(m->huff_size_dc_chrominance,
+                                 m->huff_code_dc_chrominance,
+                                 avpriv_mjpeg_bits_dc_chrominance,
+                                 avpriv_mjpeg_val_dc);
+    ff_mjpeg_build_huffman_codes(m->huff_size_ac_luminance,
+                                 m->huff_code_ac_luminance,
+                                 avpriv_mjpeg_bits_ac_luminance,
+                                 avpriv_mjpeg_val_ac_luminance);
+    ff_mjpeg_build_huffman_codes(m->huff_size_ac_chrominance,
+                                 m->huff_code_ac_chrominance,
+                                 avpriv_mjpeg_bits_ac_chrominance,
+                                 avpriv_mjpeg_val_ac_chrominance);
+
+    s->mjpeg_ctx = m;
+    return 0;
+}
+
+void ff_mjpeg_encode_close(MpegEncContext *s)
+{
+    av_free(s->mjpeg_ctx);
+}
+
+/* table_class: 0 = DC coef, 1 = AC coefs */
+static int put_huffman_table(MpegEncContext *s, int table_class, int table_id,
+                             const uint8_t *bits_table, const uint8_t *value_table)
+{
+    PutBitContext *p = &s->pb;
+    int n, i;
+
+    put_bits(p, 4, table_class);
+    put_bits(p, 4, table_id);
+
+    n = 0;
+    for(i=1;i<=16;i++) {
+        n += bits_table[i];
+        put_bits(p, 8, bits_table[i]);
+    }
+
+    for(i=0;i<n;i++)
+        put_bits(p, 8, value_table[i]);
+
+    return n + 17;
+}
+
+static void jpeg_table_header(MpegEncContext *s)
+{
+    PutBitContext *p = &s->pb;
+    int i, j, size;
+    uint8_t *ptr;
+
+    /* quant matrixes */
+    put_marker(p, DQT);
+#ifdef TWOMATRIXES
+    put_bits(p, 16, 2 + 2 * (1 + 64));
+#else
+    put_bits(p, 16, 2 + 1 * (1 + 64));
+#endif
+    put_bits(p, 4, 0); /* 8 bit precision */
+    put_bits(p, 4, 0); /* table 0 */
+    for(i=0;i<64;i++) {
+        j = s->intra_scantable.permutated[i];
+        put_bits(p, 8, s->intra_matrix[j]);
+    }
+#ifdef TWOMATRIXES
+    put_bits(p, 4, 0); /* 8 bit precision */
+    put_bits(p, 4, 1); /* table 1 */
+    for(i=0;i<64;i++) {
+        j = s->intra_scantable.permutated[i];
+        put_bits(p, 8, s->chroma_intra_matrix[j]);
+    }
+#endif
+
+    if(s->avctx->active_thread_type & FF_THREAD_SLICE){
+        put_marker(p, DRI);
+        put_bits(p, 16, 4);
+        put_bits(p, 16, (s->width-1)/(8*s->mjpeg_hsample[0]) + 1);
+    }
+
+    /* huffman table */
+    put_marker(p, DHT);
+    flush_put_bits(p);
+    ptr = put_bits_ptr(p);
+    put_bits(p, 16, 0); /* patched later */
+    size = 2;
+    size += put_huffman_table(s, 0, 0, avpriv_mjpeg_bits_dc_luminance,
+                              avpriv_mjpeg_val_dc);
+    size += put_huffman_table(s, 0, 1, avpriv_mjpeg_bits_dc_chrominance,
+                              avpriv_mjpeg_val_dc);
+
+    size += put_huffman_table(s, 1, 0, avpriv_mjpeg_bits_ac_luminance,
+                              avpriv_mjpeg_val_ac_luminance);
+    size += put_huffman_table(s, 1, 1, avpriv_mjpeg_bits_ac_chrominance,
+                              avpriv_mjpeg_val_ac_chrominance);
+    AV_WB16(ptr, size);
+}
+
+static void jpeg_put_comments(MpegEncContext *s)
+{
+    PutBitContext *p = &s->pb;
+    int size;
+    uint8_t *ptr;
+
+    if (s->avctx->sample_aspect_ratio.num /* && !lossless */)
+    {
+    /* JFIF header */
+    put_marker(p, APP0);
+    put_bits(p, 16, 16);
+    avpriv_put_string(p, "JFIF", 1); /* this puts the trailing zero-byte too */
+    put_bits(p, 16, 0x0102); /* v 1.02 */
+    put_bits(p, 8, 0); /* units type: 0 - aspect ratio */
+    put_bits(p, 16, s->avctx->sample_aspect_ratio.num);
+    put_bits(p, 16, s->avctx->sample_aspect_ratio.den);
+    put_bits(p, 8, 0); /* thumbnail width */
+    put_bits(p, 8, 0); /* thumbnail height */
+    }
+
+    /* comment */
+    if(!(s->flags & CODEC_FLAG_BITEXACT)){
+        put_marker(p, COM);
+        flush_put_bits(p);
+        ptr = put_bits_ptr(p);
+        put_bits(p, 16, 0); /* patched later */
+        avpriv_put_string(p, LIBAVCODEC_IDENT, 1);
+        size = strlen(LIBAVCODEC_IDENT)+3;
+        AV_WB16(ptr, size);
+    }
+
+    if(  s->avctx->pix_fmt == AV_PIX_FMT_YUV420P
+       ||s->avctx->pix_fmt == AV_PIX_FMT_YUV422P
+       ||s->avctx->pix_fmt == AV_PIX_FMT_YUV444P){
+        put_marker(p, COM);
+        flush_put_bits(p);
+        ptr = put_bits_ptr(p);
+        put_bits(p, 16, 0); /* patched later */
+        avpriv_put_string(p, "CS=ITU601", 1);
+        size = strlen("CS=ITU601")+3;
+        AV_WB16(ptr, size);
+    }
+}
+
+void ff_mjpeg_encode_picture_header(MpegEncContext *s)
+{
+    const int lossless= s->avctx->codec_id != AV_CODEC_ID_MJPEG;
+    int i;
+
+    put_marker(&s->pb, SOI);
+
+    // hack for AMV mjpeg format
+    if(s->avctx->codec_id == AV_CODEC_ID_AMV) goto end;
+
+    jpeg_put_comments(s);
+
+    jpeg_table_header(s);
+
+    switch(s->avctx->codec_id){
+    case AV_CODEC_ID_MJPEG:  put_marker(&s->pb, SOF0 ); break;
+    case AV_CODEC_ID_LJPEG:  put_marker(&s->pb, SOF3 ); break;
+    default: av_assert0(0);
+    }
+
+    put_bits(&s->pb, 16, 17);
+    if(lossless && (s->avctx->pix_fmt == AV_PIX_FMT_BGR0
+                    || s->avctx->pix_fmt == AV_PIX_FMT_BGRA
+                    || s->avctx->pix_fmt == AV_PIX_FMT_BGR24))
+        put_bits(&s->pb, 8, 9); /* 9 bits/component RCT */
+    else
+        put_bits(&s->pb, 8, 8); /* 8 bits/component */
+    put_bits(&s->pb, 16, s->height);
+    put_bits(&s->pb, 16, s->width);
+    put_bits(&s->pb, 8, 3); /* 3 components */
+
+    /* Y component */
+    put_bits(&s->pb, 8, 1); /* component number */
+    put_bits(&s->pb, 4, s->mjpeg_hsample[0]); /* H factor */
+    put_bits(&s->pb, 4, s->mjpeg_vsample[0]); /* V factor */
+    put_bits(&s->pb, 8, 0); /* select matrix */
+
+    /* Cb component */
+    put_bits(&s->pb, 8, 2); /* component number */
+    put_bits(&s->pb, 4, s->mjpeg_hsample[1]); /* H factor */
+    put_bits(&s->pb, 4, s->mjpeg_vsample[1]); /* V factor */
+#ifdef TWOMATRIXES
+    put_bits(&s->pb, 8, lossless ? 0 : 1); /* select matrix */
+#else
+    put_bits(&s->pb, 8, 0); /* select matrix */
+#endif
+
+    /* Cr component */
+    put_bits(&s->pb, 8, 3); /* component number */
+    put_bits(&s->pb, 4, s->mjpeg_hsample[2]); /* H factor */
+    put_bits(&s->pb, 4, s->mjpeg_vsample[2]); /* V factor */
+#ifdef TWOMATRIXES
+    put_bits(&s->pb, 8, lossless ? 0 : 1); /* select matrix */
+#else
+    put_bits(&s->pb, 8, 0); /* select matrix */
+#endif
+
+    /* scan header */
+    put_marker(&s->pb, SOS);
+    put_bits(&s->pb, 16, 12); /* length */
+    put_bits(&s->pb, 8, 3); /* 3 components */
+
+    /* Y component */
+    put_bits(&s->pb, 8, 1); /* index */
+    put_bits(&s->pb, 4, 0); /* DC huffman table index */
+    put_bits(&s->pb, 4, 0); /* AC huffman table index */
+
+    /* Cb component */
+    put_bits(&s->pb, 8, 2); /* index */
+    put_bits(&s->pb, 4, 1); /* DC huffman table index */
+    put_bits(&s->pb, 4, lossless ? 0 : 1); /* AC huffman table index */
+
+    /* Cr component */
+    put_bits(&s->pb, 8, 3); /* index */
+    put_bits(&s->pb, 4, 1); /* DC huffman table index */
+    put_bits(&s->pb, 4, lossless ? 0 : 1); /* AC huffman table index */
+
+    put_bits(&s->pb, 8, lossless ? s->avctx->prediction_method+1 : 0); /* Ss (not used) */
+
+    switch(s->avctx->codec_id){
+    case AV_CODEC_ID_MJPEG:  put_bits(&s->pb, 8, 63); break; /* Se (not used) */
+    case AV_CODEC_ID_LJPEG:  put_bits(&s->pb, 8,  0); break; /* not used */
+    default: av_assert0(0);
+    }
+
+    put_bits(&s->pb, 8, 0); /* Ah/Al (not used) */
+
+end:
+    s->esc_pos = put_bits_count(&s->pb) >> 3;
+    for(i=1; i<s->slice_context_count; i++)
+        s->thread_context[i]->esc_pos = 0;
+}
+
+static void escape_FF(MpegEncContext *s, int start)
+{
+    int size= put_bits_count(&s->pb) - start*8;
+    int i, ff_count;
+    uint8_t *buf= s->pb.buf + start;
+    int align= (-(size_t)(buf))&3;
+
+    av_assert1((size&7) == 0);
+    size >>= 3;
+
+    ff_count=0;
+    for(i=0; i<size && i<align; i++){
+        if(buf[i]==0xFF) ff_count++;
+    }
+    for(; i<size-15; i+=16){
+        int acc, v;
+
+        v= *(uint32_t*)(&buf[i]);
+        acc= (((v & (v>>4))&0x0F0F0F0F)+0x01010101)&0x10101010;
+        v= *(uint32_t*)(&buf[i+4]);
+        acc+=(((v & (v>>4))&0x0F0F0F0F)+0x01010101)&0x10101010;
+        v= *(uint32_t*)(&buf[i+8]);
+        acc+=(((v & (v>>4))&0x0F0F0F0F)+0x01010101)&0x10101010;
+        v= *(uint32_t*)(&buf[i+12]);
+        acc+=(((v & (v>>4))&0x0F0F0F0F)+0x01010101)&0x10101010;
+
+        acc>>=4;
+        acc+= (acc>>16);
+        acc+= (acc>>8);
+        ff_count+= acc&0xFF;
+    }
+    for(; i<size; i++){
+        if(buf[i]==0xFF) ff_count++;
+    }
+
+    if(ff_count==0) return;
+
+    flush_put_bits(&s->pb);
+    skip_put_bytes(&s->pb, ff_count);
+
+    for(i=size-1; ff_count; i--){
+        int v= buf[i];
+
+        if(v==0xFF){
+            buf[i+ff_count]= 0;
+            ff_count--;
+        }
+
+        buf[i+ff_count]= v;
+    }
+}
+
+void ff_mjpeg_encode_stuffing(MpegEncContext *s)
+{
+    int length, i;
+    PutBitContext *pbc = &s->pb;
+    int mb_y = s->mb_y - !s->mb_x;
+    length= (-put_bits_count(pbc))&7;
+    if(length) put_bits(pbc, length, (1<<length)-1);
+
+    flush_put_bits(&s->pb);
+    escape_FF(s, s->esc_pos);
+
+    if((s->avctx->active_thread_type & FF_THREAD_SLICE) && mb_y < s->mb_height)
+        put_marker(pbc, RST0 + (mb_y&7));
+    s->esc_pos = put_bits_count(pbc) >> 3;
+
+    for(i=0; i<3; i++)
+        s->last_dc[i] = 128 << s->intra_dc_precision;
+}
+
+void ff_mjpeg_encode_picture_trailer(MpegEncContext *s)
+{
+
+    av_assert1((s->header_bits&7)==0);
+
+
+    put_marker(&s->pb, EOI);
+}
+
+void ff_mjpeg_encode_dc(MpegEncContext *s, int val,
+                        uint8_t *huff_size, uint16_t *huff_code)
+{
+    int mant, nbits;
+
+    if (val == 0) {
+        put_bits(&s->pb, huff_size[0], huff_code[0]);
+    } else {
+        mant = val;
+        if (val < 0) {
+            val = -val;
+            mant--;
+        }
+
+        nbits= av_log2_16bit(val) + 1;
+
+        put_bits(&s->pb, huff_size[nbits], huff_code[nbits]);
+
+        put_sbits(&s->pb, nbits, mant);
+    }
+}
+
+static void encode_block(MpegEncContext *s, int16_t *block, int n)
+{
+    int mant, nbits, code, i, j;
+    int component, dc, run, last_index, val;
+    MJpegContext *m = s->mjpeg_ctx;
+    uint8_t *huff_size_ac;
+    uint16_t *huff_code_ac;
+
+    /* DC coef */
+    component = (n <= 3 ? 0 : (n&1) + 1);
+    dc = block[0]; /* overflow is impossible */
+    val = dc - s->last_dc[component];
+    if (n < 4) {
+        ff_mjpeg_encode_dc(s, val, m->huff_size_dc_luminance, m->huff_code_dc_luminance);
+        huff_size_ac = m->huff_size_ac_luminance;
+        huff_code_ac = m->huff_code_ac_luminance;
+    } else {
+        ff_mjpeg_encode_dc(s, val, m->huff_size_dc_chrominance, m->huff_code_dc_chrominance);
+        huff_size_ac = m->huff_size_ac_chrominance;
+        huff_code_ac = m->huff_code_ac_chrominance;
+    }
+    s->last_dc[component] = dc;
+
+    /* AC coefs */
+
+    run = 0;
+    last_index = s->block_last_index[n];
+    for(i=1;i<=last_index;i++) {
+        j = s->intra_scantable.permutated[i];
+        val = block[j];
+        if (val == 0) {
+            run++;
+        } else {
+            while (run >= 16) {
+                put_bits(&s->pb, huff_size_ac[0xf0], huff_code_ac[0xf0]);
+                run -= 16;
+            }
+            mant = val;
+            if (val < 0) {
+                val = -val;
+                mant--;
+            }
+
+            nbits= av_log2(val) + 1;
+            code = (run << 4) | nbits;
+
+            put_bits(&s->pb, huff_size_ac[code], huff_code_ac[code]);
+
+            put_sbits(&s->pb, nbits, mant);
+            run = 0;
+        }
+    }
+
+    /* output EOB only if not already 64 values */
+    if (last_index < 63 || run != 0)
+        put_bits(&s->pb, huff_size_ac[0], huff_code_ac[0]);
+}
+
+void ff_mjpeg_encode_mb(MpegEncContext *s, int16_t block[6][64])
+{
+    int i;
+    if (s->chroma_format == CHROMA_444) {
+        encode_block(s, block[0], 0);
+        encode_block(s, block[2], 2);
+        encode_block(s, block[4], 4);
+        encode_block(s, block[8], 8);
+        encode_block(s, block[5], 5);
+        encode_block(s, block[9], 9);
+
+        if (16*s->mb_x+8 < s->width) {
+            encode_block(s, block[1], 1);
+            encode_block(s, block[3], 3);
+            encode_block(s, block[6], 6);
+            encode_block(s, block[10], 10);
+            encode_block(s, block[7], 7);
+            encode_block(s, block[11], 11);
+        }
+    } else {
+        for(i=0;i<5;i++) {
+            encode_block(s, block[i], i);
+        }
+        if (s->chroma_format == CHROMA_420) {
+            encode_block(s, block[5], 5);
+        } else {
+            encode_block(s, block[6], 6);
+            encode_block(s, block[5], 5);
+            encode_block(s, block[7], 7);
+        }
+    }
+
+    s->i_tex_bits += get_bits_diff(s);
+}
+
+// maximum over s->mjpeg_vsample[i]
+#define V_MAX 2
+static int amv_encode_picture(AVCodecContext *avctx, AVPacket *pkt,
+                              const AVFrame *pic_arg, int *got_packet)
+
+{
+    MpegEncContext *s = avctx->priv_data;
+    AVFrame pic = *pic_arg;
+    int i;
+
+    //CODEC_FLAG_EMU_EDGE have to be cleared
+    if(s->avctx->flags & CODEC_FLAG_EMU_EDGE)
+        return -1;
+
+    //picture should be flipped upside-down
+    for(i=0; i < 3; i++) {
+        pic.data[i] += (pic.linesize[i] * (s->mjpeg_vsample[i] * (8 * s->mb_height -((s->height/V_MAX)&7)) - 1 ));
+        pic.linesize[i] *= -1;
+    }
+    return ff_MPV_encode_picture(avctx, pkt, &pic, got_packet);
+}
+
+#if CONFIG_MJPEG_ENCODER
+AVCodec ff_mjpeg_encoder = {
+    .name           = "mjpeg",
+    .type           = AVMEDIA_TYPE_VIDEO,
+    .id             = AV_CODEC_ID_MJPEG,
+    .priv_data_size = sizeof(MpegEncContext),
+    .init           = ff_MPV_encode_init,
+    .encode2        = ff_MPV_encode_picture,
+    .close          = ff_MPV_encode_end,
+    .capabilities   = CODEC_CAP_SLICE_THREADS | CODEC_CAP_FRAME_THREADS | CODEC_CAP_INTRA_ONLY,
+    .pix_fmts       = (const enum AVPixelFormat[]){
+        AV_PIX_FMT_YUVJ420P, AV_PIX_FMT_YUVJ422P, AV_PIX_FMT_YUVJ444P, AV_PIX_FMT_NONE
+    },
+    .long_name      = NULL_IF_CONFIG_SMALL("MJPEG (Motion JPEG)"),
+};
+#endif
+#if CONFIG_AMV_ENCODER
+AVCodec ff_amv_encoder = {
+    .name           = "amv",
+    .type           = AVMEDIA_TYPE_VIDEO,
+    .id             = AV_CODEC_ID_AMV,
+    .priv_data_size = sizeof(MpegEncContext),
+    .init           = ff_MPV_encode_init,
+    .encode2        = amv_encode_picture,
+    .close          = ff_MPV_encode_end,
+    .pix_fmts       = (const enum AVPixelFormat[]){
+        AV_PIX_FMT_YUVJ420P, AV_PIX_FMT_YUVJ422P, AV_PIX_FMT_NONE
+    },
+    .long_name      = NULL_IF_CONFIG_SMALL("AMV Video"),
+};
+#endif