/*
* MJPEG encoder
- * Copyright (c) 2000, 2001 Fabrice Bellard.
+ * Copyright (c) 2000, 2001 Fabrice Bellard
* Copyright (c) 2003 Alex Beregszaszi
* Copyright (c) 2003-2004 Michael Niedermayer
*
- * This file is part of FFmpeg.
+ * Support for external huffman table, various fixes (AVID workaround),
+ * aspecting, new decode_frame mechanism and apple mjpeg-b support
+ * by Alex Beregszaszi
*
- * FFmpeg is free software; you can redistribute it and/or
+ * This file is part of Libav.
+ *
+ * Libav 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,
+ * Libav 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
+ * License along with Libav; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
- *
- * Support for external huffman table, various fixes (AVID workaround),
- * aspecting, new decode_frame mechanism and apple mjpeg-b support
- * by Alex Beregszaszi
*/
/**
- * @file mjpegenc.c
+ * @file
* MJPEG encoder.
*/
#include "dsputil.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
-typedef struct MJpegContext {
- uint8_t huff_size_dc_luminance[12]; //FIXME use array [3] instead of lumi / chrom, for easier addressing
- uint16_t huff_code_dc_luminance[12];
- uint8_t huff_size_dc_chrominance[12];
- uint16_t huff_code_dc_chrominance[12];
-
- uint8_t huff_size_ac_luminance[256];
- uint16_t huff_code_ac_luminance[256];
- uint8_t huff_size_ac_chrominance[256];
- uint16_t huff_code_ac_chrominance[256];
-} MJpegContext;
-
-int mjpeg_init(MpegEncContext *s)
+av_cold int ff_mjpeg_encode_init(MpegEncContext *s)
{
MJpegContext *m;
s->max_qcoeff= 1023;
/* build all the huffman tables */
- build_huffman_codes(m->huff_size_dc_luminance,
- m->huff_code_dc_luminance,
- bits_dc_luminance,
- val_dc_luminance);
- build_huffman_codes(m->huff_size_dc_chrominance,
- m->huff_code_dc_chrominance,
- bits_dc_chrominance,
- val_dc_chrominance);
- build_huffman_codes(m->huff_size_ac_luminance,
- m->huff_code_ac_luminance,
- bits_ac_luminance,
- val_ac_luminance);
- build_huffman_codes(m->huff_size_ac_chrominance,
- m->huff_code_ac_chrominance,
- bits_ac_chrominance,
- val_ac_chrominance);
+ 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 mjpeg_close(MpegEncContext *s)
+void ff_mjpeg_encode_close(MpegEncContext *s)
{
av_free(s->mjpeg_ctx);
}
/* huffman table */
put_marker(p, DHT);
flush_put_bits(p);
- ptr = pbBufPtr(p);
+ ptr = put_bits_ptr(p);
put_bits(p, 16, 0); /* patched later */
size = 2;
- size += put_huffman_table(s, 0, 0, bits_dc_luminance, val_dc_luminance);
- size += put_huffman_table(s, 0, 1, bits_dc_chrominance, val_dc_chrominance);
-
- size += put_huffman_table(s, 1, 0, bits_ac_luminance, val_ac_luminance);
- size += put_huffman_table(s, 1, 1, bits_ac_chrominance, val_ac_chrominance);
- ptr[0] = size >> 8;
- ptr[1] = size;
+ 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)
/* JFIF header */
put_marker(p, APP0);
put_bits(p, 16, 16);
- ff_put_string(p, "JFIF", 1); /* this puts the trailing zero-byte too */
+ avpriv_put_string(p, "JFIF", 1); /* this puts the trailing zero-byte too */
put_bits(p, 16, 0x0201); /* v 1.02 */
put_bits(p, 8, 0); /* units type: 0 - aspect ratio */
put_bits(p, 16, s->avctx->sample_aspect_ratio.num);
if(!(s->flags & CODEC_FLAG_BITEXACT)){
put_marker(p, COM);
flush_put_bits(p);
- ptr = pbBufPtr(p);
+ ptr = put_bits_ptr(p);
put_bits(p, 16, 0); /* patched later */
- ff_put_string(p, LIBAVCODEC_IDENT, 1);
+ avpriv_put_string(p, LIBAVCODEC_IDENT, 1);
size = strlen(LIBAVCODEC_IDENT)+3;
- ptr[0] = size >> 8;
- ptr[1] = size;
+ AV_WB16(ptr, size);
}
- if( s->avctx->pix_fmt == PIX_FMT_YUV420P
- ||s->avctx->pix_fmt == PIX_FMT_YUV422P
- ||s->avctx->pix_fmt == PIX_FMT_YUV444P){
+ 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 = pbBufPtr(p);
+ ptr = put_bits_ptr(p);
put_bits(p, 16, 0); /* patched later */
- ff_put_string(p, "CS=ITU601", 1);
+ avpriv_put_string(p, "CS=ITU601", 1);
size = strlen("CS=ITU601")+3;
- ptr[0] = size >> 8;
- ptr[1] = size;
+ AV_WB16(ptr, size);
}
}
-void mjpeg_picture_header(MpegEncContext *s)
+void ff_mjpeg_encode_picture_header(MpegEncContext *s)
{
- const int lossless= s->avctx->codec_id != CODEC_ID_MJPEG;
+ const int lossless= s->avctx->codec_id != AV_CODEC_ID_MJPEG;
put_marker(&s->pb, SOI);
jpeg_table_header(s);
switch(s->avctx->codec_id){
- case CODEC_ID_MJPEG: put_marker(&s->pb, SOF0 ); break;
- case CODEC_ID_LJPEG: put_marker(&s->pb, SOF3 ); break;
+ case AV_CODEC_ID_MJPEG: put_marker(&s->pb, SOF0 ); break;
+ case AV_CODEC_ID_LJPEG: put_marker(&s->pb, SOF3 ); break;
default: assert(0);
}
put_bits(&s->pb, 16, 17);
- if(lossless && s->avctx->pix_fmt == PIX_FMT_RGB32)
+ if(lossless && s->avctx->pix_fmt == AV_PIX_FMT_BGRA)
put_bits(&s->pb, 8, 9); /* 9 bits/component RCT */
else
put_bits(&s->pb, 8, 8); /* 8 bits/component */
put_bits(&s->pb, 8, lossless ? s->avctx->prediction_method+1 : 0); /* Ss (not used) */
switch(s->avctx->codec_id){
- case CODEC_ID_MJPEG: put_bits(&s->pb, 8, 63); break; /* Se (not used) */
- case CODEC_ID_LJPEG: put_bits(&s->pb, 8, 0); break; /* not used */
+ 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: assert(0);
}
if(ff_count==0) return;
- /* skip put bits */
- for(i=0; i<ff_count-3; i+=4)
- put_bits(&s->pb, 32, 0);
- put_bits(&s->pb, (ff_count-i)*8, 0);
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){
-//printf("%d %d\n", i, ff_count);
buf[i+ff_count]= 0;
ff_count--;
}
}
}
-void ff_mjpeg_stuffing(PutBitContext * pbc)
+void ff_mjpeg_encode_stuffing(PutBitContext * pbc)
{
int length;
length= (-put_bits_count(pbc))&7;
if(length) put_bits(pbc, length, (1<<length)-1);
}
-void mjpeg_picture_trailer(MpegEncContext *s)
+void ff_mjpeg_encode_picture_trailer(MpegEncContext *s)
{
- ff_mjpeg_stuffing(&s->pb);
+ ff_mjpeg_encode_stuffing(&s->pb);
flush_put_bits(&s->pb);
assert((s->header_bits&7)==0);
put_marker(&s->pb, EOI);
}
-static inline void mjpeg_encode_dc(MpegEncContext *s, int val,
- uint8_t *huff_size, uint16_t *huff_code)
+void ff_mjpeg_encode_dc(MpegEncContext *s, int val,
+ uint8_t *huff_size, uint16_t *huff_code)
{
int mant, nbits;
put_bits(&s->pb, huff_size[nbits], huff_code[nbits]);
- put_bits(&s->pb, nbits, mant & ((1 << nbits) - 1));
+ put_sbits(&s->pb, nbits, mant);
}
}
-static void encode_block(MpegEncContext *s, DCTELEM *block, int n)
+static void encode_block(MpegEncContext *s, int16_t *block, int n)
{
int mant, nbits, code, i, j;
int component, dc, run, last_index, val;
dc = block[0]; /* overflow is impossible */
val = dc - s->last_dc[component];
if (n < 4) {
- mjpeg_encode_dc(s, val, m->huff_size_dc_luminance, m->huff_code_dc_luminance);
+ 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 {
- mjpeg_encode_dc(s, val, m->huff_size_dc_chrominance, m->huff_code_dc_chrominance);
+ 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;
}
put_bits(&s->pb, huff_size_ac[code], huff_code_ac[code]);
- put_bits(&s->pb, nbits, mant & ((1 << nbits) - 1));
+ put_sbits(&s->pb, nbits, mant);
run = 0;
}
}
put_bits(&s->pb, huff_size_ac[0], huff_code_ac[0]);
}
-void mjpeg_encode_mb(MpegEncContext *s,
- DCTELEM block[6][64])
+void ff_mjpeg_encode_mb(MpegEncContext *s, int16_t block[6][64])
{
int i;
for(i=0;i<5;i++) {
encode_block(s, block[5], 5);
encode_block(s, block[7], 7);
}
-}
-
-static int encode_picture_lossless(AVCodecContext *avctx, unsigned char *buf, int buf_size, void *data){
- MpegEncContext * const s = avctx->priv_data;
- MJpegContext * const m = s->mjpeg_ctx;
- AVFrame *pict = data;
- const int width= s->width;
- const int height= s->height;
- AVFrame * const p= (AVFrame*)&s->current_picture;
- const int predictor= avctx->prediction_method+1;
-
- init_put_bits(&s->pb, buf, buf_size);
-
- *p = *pict;
- p->pict_type= FF_I_TYPE;
- p->key_frame= 1;
-
- mjpeg_picture_header(s);
-
- s->header_bits= put_bits_count(&s->pb);
-
- if(avctx->pix_fmt == PIX_FMT_RGB32){
- int x, y, i;
- const int linesize= p->linesize[0];
- uint16_t (*buffer)[4]= (void *) s->rd_scratchpad;
- int left[3], top[3], topleft[3];
-
- for(i=0; i<3; i++){
- buffer[0][i]= 1 << (9 - 1);
- }
-
- for(y = 0; y < height; y++) {
- const int modified_predictor= y ? predictor : 1;
- uint8_t *ptr = p->data[0] + (linesize * y);
- if(s->pb.buf_end - s->pb.buf - (put_bits_count(&s->pb)>>3) < width*3*4){
- av_log(s->avctx, AV_LOG_ERROR, "encoded frame too large\n");
- return -1;
- }
-
- for(i=0; i<3; i++){
- top[i]= left[i]= topleft[i]= buffer[0][i];
- }
- for(x = 0; x < width; x++) {
- buffer[x][1] = ptr[4*x+0] - ptr[4*x+1] + 0x100;
- buffer[x][2] = ptr[4*x+2] - ptr[4*x+1] + 0x100;
- buffer[x][0] = (ptr[4*x+0] + 2*ptr[4*x+1] + ptr[4*x+2])>>2;
-
- for(i=0;i<3;i++) {
- int pred, diff;
-
- PREDICT(pred, topleft[i], top[i], left[i], modified_predictor);
-
- topleft[i]= top[i];
- top[i]= buffer[x+1][i];
-
- left[i]= buffer[x][i];
-
- diff= ((left[i] - pred + 0x100)&0x1FF) - 0x100;
-
- if(i==0)
- mjpeg_encode_dc(s, diff, m->huff_size_dc_luminance, m->huff_code_dc_luminance); //FIXME ugly
- else
- mjpeg_encode_dc(s, diff, m->huff_size_dc_chrominance, m->huff_code_dc_chrominance);
- }
- }
- }
- }else{
- int mb_x, mb_y, i;
- const int mb_width = (width + s->mjpeg_hsample[0] - 1) / s->mjpeg_hsample[0];
- const int mb_height = (height + s->mjpeg_vsample[0] - 1) / s->mjpeg_vsample[0];
-
- for(mb_y = 0; mb_y < mb_height; mb_y++) {
- if(s->pb.buf_end - s->pb.buf - (put_bits_count(&s->pb)>>3) < mb_width * 4 * 3 * s->mjpeg_hsample[0] * s->mjpeg_vsample[0]){
- av_log(s->avctx, AV_LOG_ERROR, "encoded frame too large\n");
- return -1;
- }
- for(mb_x = 0; mb_x < mb_width; mb_x++) {
- if(mb_x==0 || mb_y==0){
- for(i=0;i<3;i++) {
- uint8_t *ptr;
- int x, y, h, v, linesize;
- h = s->mjpeg_hsample[i];
- v = s->mjpeg_vsample[i];
- linesize= p->linesize[i];
-
- for(y=0; y<v; y++){
- for(x=0; x<h; x++){
- int pred;
-
- ptr = p->data[i] + (linesize * (v * mb_y + y)) + (h * mb_x + x); //FIXME optimize this crap
- if(y==0 && mb_y==0){
- if(x==0 && mb_x==0){
- pred= 128;
- }else{
- pred= ptr[-1];
- }
- }else{
- if(x==0 && mb_x==0){
- pred= ptr[-linesize];
- }else{
- PREDICT(pred, ptr[-linesize-1], ptr[-linesize], ptr[-1], predictor);
- }
- }
-
- if(i==0)
- mjpeg_encode_dc(s, (int8_t)(*ptr - pred), m->huff_size_dc_luminance, m->huff_code_dc_luminance); //FIXME ugly
- else
- mjpeg_encode_dc(s, (int8_t)(*ptr - pred), m->huff_size_dc_chrominance, m->huff_code_dc_chrominance);
- }
- }
- }
- }else{
- for(i=0;i<3;i++) {
- uint8_t *ptr;
- int x, y, h, v, linesize;
- h = s->mjpeg_hsample[i];
- v = s->mjpeg_vsample[i];
- linesize= p->linesize[i];
-
- for(y=0; y<v; y++){
- for(x=0; x<h; x++){
- int pred;
-
- ptr = p->data[i] + (linesize * (v * mb_y + y)) + (h * mb_x + x); //FIXME optimize this crap
-//printf("%d %d %d %d %8X\n", mb_x, mb_y, x, y, ptr);
- PREDICT(pred, ptr[-linesize-1], ptr[-linesize], ptr[-1], predictor);
-
- if(i==0)
- mjpeg_encode_dc(s, (int8_t)(*ptr - pred), m->huff_size_dc_luminance, m->huff_code_dc_luminance); //FIXME ugly
- else
- mjpeg_encode_dc(s, (int8_t)(*ptr - pred), m->huff_size_dc_chrominance, m->huff_code_dc_chrominance);
- }
- }
- }
- }
- }
- }
- }
-
- emms_c();
-
- mjpeg_picture_trailer(s);
- s->picture_number++;
-
- flush_put_bits(&s->pb);
- return pbBufPtr(&s->pb) - s->pb.buf;
-// return (put_bits_count(&f->pb)+7)/8;
+ s->i_tex_bits += get_bits_diff(s);
}
-
-AVCodec ljpeg_encoder = { //FIXME avoid MPV_* lossless jpeg shouldnt need them
- "ljpeg",
- CODEC_TYPE_VIDEO,
- CODEC_ID_LJPEG,
- sizeof(MpegEncContext),
- MPV_encode_init,
- encode_picture_lossless,
- MPV_encode_end,
+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,
+ .pix_fmts = (const enum AVPixelFormat[]){
+ AV_PIX_FMT_YUVJ420P, AV_PIX_FMT_YUVJ422P, AV_PIX_FMT_NONE
+ },
+ .long_name = NULL_IF_CONFIG_SMALL("MJPEG (Motion JPEG)"),
};
projects / ffmpeg / blobdiff