X-Git-Url: https://git.sesse.net/?a=blobdiff_plain;f=libavcodec%2Fmjpegenc.c;h=8291113cb19f860ab74479288f67eccbc6a615cb;hb=e17567a831dede1f24e3a1a4c305a93012d7a8ce;hp=ebe899326e718e4526ed2d5033d05587c740d538;hpb=9c6cf7f2c9d326281e3eefa67673aabaa9d69940;p=ffmpeg diff --git a/libavcodec/mjpegenc.c b/libavcodec/mjpegenc.c index ebe899326e7..8291113cb19 100644 --- a/libavcodec/mjpegenc.c +++ b/libavcodec/mjpegenc.c @@ -30,27 +30,22 @@ * MJPEG encoder. */ -//#define DEBUG -#include +#include "libavutil/pixdesc.h" #include "avcodec.h" -#include "dsputil.h" +#include "jpegtables.h" +#include "mjpegenc_common.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; m = av_malloc(sizeof(MJpegContext)); if (!m) - return -1; + return AVERROR(ENOMEM); s->min_qcoeff=-1023; s->max_qcoeff= 1023; @@ -82,294 +77,7 @@ 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;ipb; - 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 - - /* 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->aspect_ratio_info /* && !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, 0x0201); /* 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 == PIX_FMT_YUV420P - ||s->avctx->pix_fmt == PIX_FMT_YUV422P - ||s->avctx->pix_fmt == 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; - - put_marker(&s->pb, SOI); - - 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: assert(0); - } - - put_bits(&s->pb, 16, 17); - if(lossless && s->avctx->pix_fmt == 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, 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: assert(0); - } - - put_bits(&s->pb, 8, 0); /* Ah/Al (not used) */ -} - -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; - - assert((size&7) == 0); - size >>= 3; - - ff_count=0; - for(i=0; i>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(; ipb); - 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(PutBitContext * pbc) -{ - int length; - length= (-put_bits_count(pbc))&7; - if(length) put_bits(pbc, length, (1<pb); - flush_put_bits(&s->pb); - - assert((s->header_bits&7)==0); - - escape_FF(s, s->header_bits>>3); - - 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, 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; @@ -382,11 +90,11 @@ static void encode_block(MpegEncContext *s, DCTELEM *block, int n) 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); + ff_mjpeg_encode_dc(&s->pb, 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); + ff_mjpeg_encode_dc(&s->pb, 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; } @@ -427,7 +135,7 @@ static void encode_block(MpegEncContext *s, DCTELEM *block, int n) put_bits(&s->pb, huff_size_ac[0], huff_code_ac[0]); } -void ff_mjpeg_encode_mb(MpegEncContext *s, DCTELEM block[6][64]) +void ff_mjpeg_encode_mb(MpegEncContext *s, int16_t block[8][64]) { int i; for(i=0;i<5;i++) { @@ -444,16 +152,35 @@ void ff_mjpeg_encode_mb(MpegEncContext *s, DCTELEM block[6][64]) s->i_tex_bits += get_bits_diff(s); } +#define OFFSET(x) offsetof(MpegEncContext, x) +#define VE AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_ENCODING_PARAM +static const AVOption options[] = { +{ "pred", "Prediction method", OFFSET(pred), AV_OPT_TYPE_INT, { .i64 = 1 }, 1, 3, VE, "pred" }, + { "left", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = 1 }, INT_MIN, INT_MAX, VE, "pred" }, + { "plane", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = 2 }, INT_MIN, INT_MAX, VE, "pred" }, + { "median", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = 3 }, INT_MIN, INT_MAX, VE, "pred" }, + + { NULL}, +}; + +static const AVClass mjpeg_class = { + .class_name = "mjpeg", + .item_name = av_default_item_name, + .option = options, + .version = LIBAVUTIL_VERSION_INT, +}; + AVCodec ff_mjpeg_encoder = { .name = "mjpeg", + .long_name = NULL_IF_CONFIG_SMALL("MJPEG (Motion JPEG)"), .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 PixelFormat[]){ - PIX_FMT_YUVJ420P, PIX_FMT_YUVJ422P, PIX_FMT_NONE + .priv_class = &mjpeg_class, + .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)"), };