mirror of https://git.ffmpeg.org/ffmpeg.git
fixed msmpeg4 infinite loop if buggy stream
rewrote quantizer fixed bias (+10% compression/quality for h263 like codecs) qscale=1 support mpeg1 intra frames looks far less blocky added codec_id field Originally committed as revision 423 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
Michael Niedermayer
parent
1ac9248bb7
commit
d7e9533aa0
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@ -157,6 +157,9 @@ inline void dprintf(const char* fmt,...) {}
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#endif /* HAVE_AV_CONFIG_H */
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/* assume b>0 */
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#define ROUNDED_DIV(a,b) (((a)>0 ? (a) + ((b)>>1) : (a) - ((b)>>1))/(b))
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/* bit output */
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struct PutBitContext;
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@ -904,8 +904,26 @@ void h263_encode_init(MpegEncContext *s)
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s->mv_penalty= mv_penalty; //FIXME exact table for msmpeg4 & h263p
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// use fcodes >1 only for mpeg4 & h263 & h263p FIXME
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if(s->h263_plus) s->fcode_tab= umv_fcode_tab;
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else if(s->h263_pred && !s->h263_msmpeg4) s->fcode_tab= fcode_tab;
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switch(s->codec_id){
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case CODEC_ID_MPEG4:
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s->fcode_tab= fcode_tab;
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s->min_qcoeff= -2048;
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s->max_qcoeff= 2047;
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break;
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case CODEC_ID_H263P:
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s->fcode_tab= umv_fcode_tab;
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s->min_qcoeff= -128;
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s->max_qcoeff= 127;
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break;
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default: //nothing needed default table allready set in mpegvideo.c
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s->min_qcoeff= -128;
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s->max_qcoeff= 127;
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}
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/* h263 type bias */
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//FIXME mpeg4 mpeg quantizer
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s->intra_quant_bias=0;
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s->inter_quant_bias=-(1<<(QUANT_BIAS_SHIFT-2)); //(a - x/4)/x
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}
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static void h263_encode_block(MpegEncContext * s, DCTELEM * block, int n)
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@ -2702,8 +2720,8 @@ int mpeg4_decode_picture_header(MpegEncContext * s)
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s->chroma_intra_matrix[i]= v;
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v= ff_mpeg4_default_non_intra_matrix[i];
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s->non_intra_matrix[i]= v;
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s->chroma_non_intra_matrix[i]= v;
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s->inter_matrix[i]= v;
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s->chroma_inter_matrix[i]= v;
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}
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/* load custom intra matrix */
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@ -2725,15 +2743,15 @@ int mpeg4_decode_picture_header(MpegEncContext * s)
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if(v==0) break;
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j= zigzag_direct[i];
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s->non_intra_matrix[j]= v;
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s->chroma_non_intra_matrix[j]= v;
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s->inter_matrix[j]= v;
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s->chroma_inter_matrix[j]= v;
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}
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/* replicate last value */
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for(; i<64; i++){
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j= zigzag_direct[i];
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s->non_intra_matrix[j]= v;
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s->chroma_non_intra_matrix[j]= v;
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s->inter_matrix[j]= v;
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s->chroma_inter_matrix[j]= v;
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}
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}
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@ -73,17 +73,13 @@ static int h263_decode_init(AVCodecContext *avctx)
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default:
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return -1;
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}
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s->codec_id= avctx->codec->id;
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/* for h263, we allocate the images after having read the header */
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if (avctx->codec->id != CODEC_ID_H263 && avctx->codec->id != CODEC_ID_MPEG4)
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if (MPV_common_init(s) < 0)
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return -1;
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/* XXX: suppress this matrix init, only needed because using mpeg1
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dequantize in mmx case */
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for(i=0;i<64;i++)
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s->non_intra_matrix[i] = default_non_intra_matrix[i];
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if (s->h263_msmpeg4)
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msmpeg4_decode_init_vlc(s);
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else
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@ -251,7 +247,7 @@ static int h263_decode_frame(AVCodecContext *avctx,
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if(msmpeg4_decode_ext_header(s, buf_size) < 0) return -1;
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/* divx 5.01+ bistream reorder stuff */
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if(s->h263_pred && s->bitstream_buffer_size==0){
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if(s->codec_id==CODEC_ID_MPEG4 && s->bitstream_buffer_size==0){
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int current_pos= get_bits_count(&s->gb)/8;
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if( buf_size - current_pos > 5
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&& buf_size - current_pos < BITSTREAM_BUFFER_SIZE){
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@ -26,8 +26,6 @@
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#include "../mangle.h"
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extern UINT8 zigzag_end[64];
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extern void (*draw_edges)(UINT8 *buf, int wrap, int width, int height, int w);
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extern int (*dct_quantize)(MpegEncContext *s, DCTELEM *block, int n, int qscale);
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extern UINT8 zigzag_direct_noperm[64];
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extern UINT16 inv_zigzag_direct16[64];
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@ -260,7 +258,7 @@ asm volatile(
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block[0]= block0;
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} else {
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quant_matrix = s->non_intra_matrix;
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quant_matrix = s->inter_matrix;
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asm volatile(
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"pcmpeqw %%mm7, %%mm7 \n\t"
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"psrlw $15, %%mm7 \n\t"
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@ -382,7 +380,7 @@ asm volatile(
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//Note, we dont do mismatch control for intra as errors cannot accumulate
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} else {
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quant_matrix = s->non_intra_matrix;
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quant_matrix = s->inter_matrix;
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asm volatile(
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"pcmpeqw %%mm7, %%mm7 \n\t"
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"psrlq $48, %%mm7 \n\t"
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@ -33,149 +33,160 @@
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static int RENAME(dct_quantize)(MpegEncContext *s,
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DCTELEM *block, int n,
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int qscale)
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int qscale, int *overflow)
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{
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int i, level, last_non_zero_p1, q;
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const UINT16 *qmat;
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int level=0, last_non_zero_p1, q; //=0 is cuz gcc says uninitalized ...
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const UINT16 *qmat, *bias;
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static __align8 INT16 temp_block[64];
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int minLevel, maxLevel;
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if(s->avctx!=NULL && s->avctx->codec->id==CODEC_ID_MPEG4){
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/* mpeg4 */
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minLevel= -2048;
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maxLevel= 2047;
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}else if(s->out_format==FMT_MPEG1){
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/* mpeg1 */
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minLevel= -255;
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maxLevel= 255;
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}else if(s->out_format==FMT_MJPEG){
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/* (m)jpeg */
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minLevel= -1023;
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maxLevel= 1023;
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}else{
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/* h263 / msmpeg4 */
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minLevel= -128;
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maxLevel= 127;
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}
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av_fdct (block);
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if (s->mb_intra) {
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int dummy;
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if (n < 4)
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q = s->y_dc_scale;
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else
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q = s->c_dc_scale;
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/* note: block[0] is assumed to be positive */
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#if 1
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asm volatile (
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"xorl %%edx, %%edx \n\t"
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"mul %%ecx \n\t"
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: "=d" (temp_block[0]), "=a"(dummy)
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: "a" (block[0] + (q >> 1)), "c" (inverse[q])
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);
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asm volatile (
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"xorl %%edx, %%edx \n\t"
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"mul %%ecx \n\t"
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: "=d" (level), "=a"(dummy)
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: "a" (block[0] + (q >> 1)), "c" (inverse[q])
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);
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#else
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asm volatile (
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"xorl %%edx, %%edx \n\t"
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"divw %%cx \n\t"
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"movzwl %%ax, %%eax \n\t"
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: "=a" (temp_block[0])
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: "a" (block[0] + (q >> 1)), "c" (q)
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: "%edx"
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);
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asm volatile (
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"xorl %%edx, %%edx \n\t"
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"divw %%cx \n\t"
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"movzwl %%ax, %%eax \n\t"
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: "=a" (level)
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: "a" (block[0] + (q >> 1)), "c" (q)
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: "%edx"
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);
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#endif
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block[0]=0; //avoid fake overflow
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// temp_block[0] = (block[0] + (q >> 1)) / q;
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i = 1;
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last_non_zero_p1 = 1;
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if (s->out_format == FMT_H263) {
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qmat = s->q_non_intra_matrix16;
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} else {
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qmat = s->q_intra_matrix16;
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}
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for(i=1;i<4;i++) {
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level = block[i] * qmat[i];
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level = level / (1 << (QMAT_SHIFT_MMX - 3));
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/* XXX: currently, this code is not optimal. the range should be:
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mpeg1: -255..255
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mpeg2: -2048..2047
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h263: -128..127
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mpeg4: -2048..2047
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*/
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if (level > maxLevel)
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level = maxLevel;
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else if (level < minLevel)
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level = minLevel;
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temp_block[i] = level;
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if(level)
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if(last_non_zero_p1 < inv_zigzag_direct16[i]) last_non_zero_p1= inv_zigzag_direct16[i];
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block[i]=0;
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}
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bias = s->q_intra_matrix16_bias[qscale];
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qmat = s->q_intra_matrix16[qscale];
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} else {
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i = 0;
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last_non_zero_p1 = 0;
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qmat = s->q_non_intra_matrix16;
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bias = s->q_inter_matrix16_bias[qscale];
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qmat = s->q_inter_matrix16[qscale];
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}
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asm volatile( /* XXX: small rounding bug, but it shouldnt matter */
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"movd %3, %%mm3 \n\t"
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SPREADW(%%mm3)
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"movd %4, %%mm4 \n\t"
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SPREADW(%%mm4)
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#ifndef HAVE_MMX2
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"movd %5, %%mm5 \n\t"
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SPREADW(%%mm5)
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#endif
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"pxor %%mm7, %%mm7 \n\t"
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"movd %%eax, %%mm2 \n\t"
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SPREADW(%%mm2)
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"movl %6, %%eax \n\t"
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".balign 16 \n\t"
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"1: \n\t"
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"movq (%1, %%eax), %%mm0 \n\t"
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"movq (%2, %%eax), %%mm1 \n\t"
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"movq %%mm0, %%mm6 \n\t"
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"psraw $15, %%mm6 \n\t"
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"pmulhw %%mm0, %%mm1 \n\t"
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"psubsw %%mm6, %%mm1 \n\t"
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#ifdef HAVE_MMX2
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"pminsw %%mm3, %%mm1 \n\t"
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"pmaxsw %%mm4, %%mm1 \n\t"
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#else
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"paddsw %%mm3, %%mm1 \n\t"
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"psubusw %%mm4, %%mm1 \n\t"
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"paddsw %%mm5, %%mm1 \n\t"
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#endif
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"movq %%mm1, (%8, %%eax) \n\t"
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"pcmpeqw %%mm7, %%mm1 \n\t"
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"movq (%7, %%eax), %%mm0 \n\t"
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"movq %%mm7, (%1, %%eax) \n\t"
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"pandn %%mm0, %%mm1 \n\t"
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PMAXW(%%mm1, %%mm2)
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"addl $8, %%eax \n\t"
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" js 1b \n\t"
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"movq %%mm2, %%mm0 \n\t"
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"psrlq $32, %%mm2 \n\t"
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PMAXW(%%mm0, %%mm2)
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"movq %%mm2, %%mm0 \n\t"
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"psrlq $16, %%mm2 \n\t"
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PMAXW(%%mm0, %%mm2)
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"movd %%mm2, %%eax \n\t"
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"movzbl %%al, %%eax \n\t"
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: "+a" (last_non_zero_p1)
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: "r" (block+64), "r" (qmat+64),
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#ifdef HAVE_MMX2
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"m" (maxLevel), "m" (minLevel), "m" (minLevel /* dummy */), "g" (2*i - 128),
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#else
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"m" (0x7FFF - maxLevel), "m" (0x7FFF -maxLevel + minLevel), "m" (minLevel), "g" (2*i - 128),
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#endif
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"r" (inv_zigzag_direct16+64), "r" (temp_block+64)
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);
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if(s->out_format == FMT_H263){
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asm volatile(
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"movd %%eax, %%mm3 \n\t" // last_non_zero_p1
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SPREADW(%%mm3)
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"pxor %%mm7, %%mm7 \n\t" // 0
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"pxor %%mm4, %%mm4 \n\t" // 0
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"movq (%2), %%mm5 \n\t" // qmat[0]
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"pxor %%mm6, %%mm6 \n\t"
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"psubw (%3), %%mm6 \n\t" // -bias[0]
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"movl $-128, %%eax \n\t"
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".balign 16 \n\t"
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"1: \n\t"
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"pxor %%mm1, %%mm1 \n\t" // 0
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"movq (%1, %%eax), %%mm0 \n\t" // block[i]
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"pcmpgtw %%mm0, %%mm1 \n\t" // block[i] <= 0 ? 0xFF : 0x00
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"pxor %%mm1, %%mm0 \n\t"
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"psubw %%mm1, %%mm0 \n\t" // ABS(block[i])
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"psubusw %%mm6, %%mm0 \n\t" // ABS(block[i]) + bias[0]
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"pmulhw %%mm5, %%mm0 \n\t" // (ABS(block[i])*qmat[0] - bias[0]*qmat[0])>>16
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"por %%mm0, %%mm4 \n\t"
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"pxor %%mm1, %%mm0 \n\t"
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"psubw %%mm1, %%mm0 \n\t" // out=((ABS(block[i])*qmat[0] - bias[0]*qmat[0])>>16)*sign(block[i])
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"movq %%mm0, (%5, %%eax) \n\t"
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"pcmpeqw %%mm7, %%mm0 \n\t" // out==0 ? 0xFF : 0x00
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"movq (%4, %%eax), %%mm1 \n\t"
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"movq %%mm7, (%1, %%eax) \n\t" // 0
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"pandn %%mm1, %%mm0 \n\t"
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PMAXW(%%mm0, %%mm3)
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"addl $8, %%eax \n\t"
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" js 1b \n\t"
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"movq %%mm3, %%mm0 \n\t"
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"psrlq $32, %%mm3 \n\t"
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PMAXW(%%mm0, %%mm3)
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"movq %%mm3, %%mm0 \n\t"
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"psrlq $16, %%mm3 \n\t"
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PMAXW(%%mm0, %%mm3)
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"movd %%mm3, %%eax \n\t"
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"movzbl %%al, %%eax \n\t" // last_non_zero_p1
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: "+a" (last_non_zero_p1)
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: "r" (block+64), "r" (qmat), "r" (bias),
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"r" (inv_zigzag_direct16+64), "r" (temp_block+64)
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);
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// note the asm is split cuz gcc doesnt like that many operands ...
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asm volatile(
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"movd %1, %%mm1 \n\t" // max_qcoeff
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SPREADW(%%mm1)
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"psubusw %%mm1, %%mm4 \n\t"
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"packuswb %%mm4, %%mm4 \n\t"
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"movd %%mm4, %0 \n\t" // *overflow
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: "=g" (*overflow)
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: "g" (s->max_qcoeff)
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);
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}else{ // FMT_H263
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asm volatile(
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"movd %%eax, %%mm3 \n\t" // last_non_zero_p1
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SPREADW(%%mm3)
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"pxor %%mm7, %%mm7 \n\t" // 0
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"pxor %%mm4, %%mm4 \n\t" // 0
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"movl $-128, %%eax \n\t"
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".balign 16 \n\t"
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"1: \n\t"
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"pxor %%mm1, %%mm1 \n\t" // 0
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"movq (%1, %%eax), %%mm0 \n\t" // block[i]
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"pcmpgtw %%mm0, %%mm1 \n\t" // block[i] <= 0 ? 0xFF : 0x00
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"pxor %%mm1, %%mm0 \n\t"
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"psubw %%mm1, %%mm0 \n\t" // ABS(block[i])
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"movq (%3, %%eax), %%mm6 \n\t" // bias[0]
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"paddusw %%mm6, %%mm0 \n\t" // ABS(block[i]) + bias[0]
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"movq (%2, %%eax), %%mm5 \n\t" // qmat[i]
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"pmulhw %%mm5, %%mm0 \n\t" // (ABS(block[i])*qmat[0] + bias[0]*qmat[0])>>16
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"por %%mm0, %%mm4 \n\t"
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"pxor %%mm1, %%mm0 \n\t"
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"psubw %%mm1, %%mm0 \n\t" // out=((ABS(block[i])*qmat[0] - bias[0]*qmat[0])>>16)*sign(block[i])
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"movq %%mm0, (%5, %%eax) \n\t"
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"pcmpeqw %%mm7, %%mm0 \n\t" // out==0 ? 0xFF : 0x00
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"movq (%4, %%eax), %%mm1 \n\t"
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"movq %%mm7, (%1, %%eax) \n\t" // 0
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"pandn %%mm1, %%mm0 \n\t"
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PMAXW(%%mm0, %%mm3)
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"addl $8, %%eax \n\t"
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" js 1b \n\t"
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"movq %%mm3, %%mm0 \n\t"
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"psrlq $32, %%mm3 \n\t"
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PMAXW(%%mm0, %%mm3)
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"movq %%mm3, %%mm0 \n\t"
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"psrlq $16, %%mm3 \n\t"
|
||||
PMAXW(%%mm0, %%mm3)
|
||||
"movd %%mm3, %%eax \n\t"
|
||||
"movzbl %%al, %%eax \n\t" // last_non_zero_p1
|
||||
: "+a" (last_non_zero_p1)
|
||||
: "r" (block+64), "r" (qmat+64), "r" (bias+64),
|
||||
"r" (inv_zigzag_direct16+64), "r" (temp_block+64)
|
||||
);
|
||||
// note the asm is split cuz gcc doesnt like that many operands ...
|
||||
asm volatile(
|
||||
"movd %1, %%mm1 \n\t" // max_qcoeff
|
||||
SPREADW(%%mm1)
|
||||
"psubusw %%mm1, %%mm4 \n\t"
|
||||
"packuswb %%mm4, %%mm4 \n\t"
|
||||
"movd %%mm4, %0 \n\t" // *overflow
|
||||
: "=g" (*overflow)
|
||||
: "g" (s->max_qcoeff)
|
||||
);
|
||||
}
|
||||
|
||||
if(s->mb_intra) temp_block[0]= level; //FIXME move afer permute
|
||||
// last_non_zero_p1=64;
|
||||
/* permute for IDCT */
|
||||
asm volatile(
|
||||
"movl %0, %%eax \n\t"
|
||||
"movl %0, %%eax \n\t"
|
||||
"pushl %%ebp \n\t"
|
||||
"movl %%esp, " MANGLE(esp_temp) "\n\t"
|
||||
"1: \n\t"
|
||||
|
|
@ -203,5 +214,6 @@ static int RENAME(dct_quantize)(MpegEncContext *s,
|
|||
}
|
||||
*/
|
||||
//block_permute(block);
|
||||
|
||||
return last_non_zero_p1 - 1;
|
||||
}
|
||||
|
|
|
|||
|
|
@ -160,6 +160,9 @@ int mjpeg_init(MpegEncContext *s)
|
|||
m = malloc(sizeof(MJpegContext));
|
||||
if (!m)
|
||||
return -1;
|
||||
|
||||
s->min_qcoeff=-1023;
|
||||
s->max_qcoeff= 1023;
|
||||
|
||||
/* build all the huffman tables */
|
||||
build_huffman_codes(m->huff_size_dc_luminance,
|
||||
|
|
|
|||
|
|
@ -399,8 +399,11 @@ void mpeg1_encode_init(MpegEncContext *s)
|
|||
}
|
||||
}
|
||||
s->mv_penalty= mv_penalty;
|
||||
|
||||
s->fcode_tab= fcode_tab;
|
||||
s->min_qcoeff=-255;
|
||||
s->max_qcoeff= 255;
|
||||
s->intra_quant_bias= 3<<(QUANT_BIAS_SHIFT-3); //(a + x*3/8)/x
|
||||
s->inter_quant_bias= 0;
|
||||
}
|
||||
|
||||
static inline void encode_dc(MpegEncContext *s, int diff, int component)
|
||||
|
|
@ -1027,9 +1030,9 @@ static int mpeg2_decode_block_non_intra(MpegEncContext *s,
|
|||
UINT8 *buf_ptr;
|
||||
i = 0;
|
||||
if (n < 4)
|
||||
matrix = s->non_intra_matrix;
|
||||
matrix = s->inter_matrix;
|
||||
else
|
||||
matrix = s->chroma_non_intra_matrix;
|
||||
matrix = s->chroma_inter_matrix;
|
||||
|
||||
/* special case for the first coef. no need to add a second vlc table */
|
||||
SAVE_BITS(&s->gb);
|
||||
|
|
@ -1183,6 +1186,7 @@ static int mpeg_decode_init(AVCodecContext *avctx)
|
|||
s->buf_ptr = s->buffer;
|
||||
s->mpeg_enc_ctx.picture_number = 0;
|
||||
s->repeat_field = 0;
|
||||
s->mpeg_enc_ctx.codec_id= avctx->codec->id;
|
||||
return 0;
|
||||
}
|
||||
|
||||
|
|
@ -1292,8 +1296,8 @@ static void mpeg_decode_quant_matrix_extension(MpegEncContext *s)
|
|||
for(i=0;i<64;i++) {
|
||||
v = get_bits(&s->gb, 8);
|
||||
j = zigzag_direct[i];
|
||||
s->non_intra_matrix[j] = v;
|
||||
s->chroma_non_intra_matrix[j] = v;
|
||||
s->inter_matrix[j] = v;
|
||||
s->chroma_inter_matrix[j] = v;
|
||||
}
|
||||
}
|
||||
if (get_bits1(&s->gb)) {
|
||||
|
|
@ -1307,7 +1311,7 @@ static void mpeg_decode_quant_matrix_extension(MpegEncContext *s)
|
|||
for(i=0;i<64;i++) {
|
||||
v = get_bits(&s->gb, 8);
|
||||
j = zigzag_direct[i];
|
||||
s->chroma_non_intra_matrix[j] = v;
|
||||
s->chroma_inter_matrix[j] = v;
|
||||
}
|
||||
}
|
||||
}
|
||||
|
|
@ -1386,7 +1390,6 @@ static int mpeg_decode_slice(AVCodecContext *avctx,
|
|||
s->mb_x = -1;
|
||||
s->mb_y = start_code;
|
||||
s->mb_incr = 0;
|
||||
|
||||
/* start frame decoding */
|
||||
if (s->first_slice) {
|
||||
s->first_slice = 0;
|
||||
|
|
@ -1526,20 +1529,20 @@ static int mpeg1_decode_sequence(AVCodecContext *avctx,
|
|||
for(i=0;i<64;i++) {
|
||||
v = get_bits(&s->gb, 8);
|
||||
j = zigzag_direct[i];
|
||||
s->non_intra_matrix[j] = v;
|
||||
s->chroma_non_intra_matrix[j] = v;
|
||||
s->inter_matrix[j] = v;
|
||||
s->chroma_inter_matrix[j] = v;
|
||||
}
|
||||
#ifdef DEBUG
|
||||
dprintf("non intra matrix present\n");
|
||||
for(i=0;i<64;i++)
|
||||
dprintf(" %d", s->non_intra_matrix[zigzag_direct[i]]);
|
||||
dprintf(" %d", s->inter_matrix[zigzag_direct[i]]);
|
||||
printf("\n");
|
||||
#endif
|
||||
} else {
|
||||
for(i=0;i<64;i++) {
|
||||
v = default_non_intra_matrix[i];
|
||||
s->non_intra_matrix[i] = v;
|
||||
s->chroma_non_intra_matrix[i] = v;
|
||||
s->inter_matrix[i] = v;
|
||||
s->chroma_inter_matrix[i] = v;
|
||||
}
|
||||
}
|
||||
|
||||
|
|
@ -1566,7 +1569,7 @@ static int mpeg_decode_frame(AVCodecContext *avctx,
|
|||
dprintf("fill_buffer\n");
|
||||
|
||||
*data_size = 0;
|
||||
|
||||
|
||||
/* special case for last picture */
|
||||
if (buf_size == 0) {
|
||||
if (s2->picture_number > 0) {
|
||||
|
|
@ -1591,7 +1594,7 @@ static int mpeg_decode_frame(AVCodecContext *avctx,
|
|||
*data_size = sizeof(AVPicture);
|
||||
goto the_end;
|
||||
}
|
||||
|
||||
|
||||
while (buf_ptr < buf_end) {
|
||||
buf_start = buf_ptr;
|
||||
/* find start next code */
|
||||
|
|
|
|||
|
|
@ -38,9 +38,9 @@ static void dct_unquantize_mpeg2_c(MpegEncContext *s,
|
|||
static void dct_unquantize_h263_c(MpegEncContext *s,
|
||||
DCTELEM *block, int n, int qscale);
|
||||
static void draw_edges_c(UINT8 *buf, int wrap, int width, int height, int w);
|
||||
static int dct_quantize_c(MpegEncContext *s, DCTELEM *block, int n, int qscale);
|
||||
static int dct_quantize_c(MpegEncContext *s, DCTELEM *block, int n, int qscale, int *overflow);
|
||||
|
||||
int (*dct_quantize)(MpegEncContext *s, DCTELEM *block, int n, int qscale)= dct_quantize_c;
|
||||
int (*dct_quantize)(MpegEncContext *s, DCTELEM *block, int n, int qscale, int *overflow)= dct_quantize_c;
|
||||
void (*draw_edges)(UINT8 *buf, int wrap, int width, int height, int w)= draw_edges_c;
|
||||
|
||||
#define EDGE_WIDTH 16
|
||||
|
|
@ -78,29 +78,38 @@ extern UINT8 zigzag_end[64];
|
|||
/* default motion estimation */
|
||||
int motion_estimation_method = ME_EPZS;
|
||||
|
||||
static void convert_matrix(int *qmat, UINT16 *qmat16, const UINT16 *quant_matrix, int qscale)
|
||||
static void convert_matrix(int (*qmat)[64], uint16_t (*qmat16)[64], uint16_t (*qmat16_bias)[64],
|
||||
const UINT16 *quant_matrix, int bias)
|
||||
{
|
||||
int i;
|
||||
int qscale;
|
||||
|
||||
if (av_fdct == jpeg_fdct_ifast) {
|
||||
for(i=0;i<64;i++) {
|
||||
/* 16 <= qscale * quant_matrix[i] <= 7905 */
|
||||
/* 19952 <= aanscales[i] * qscale * quant_matrix[i] <= 249205026 */
|
||||
/* (1<<36)/19952 >= (1<<36)/(aanscales[i] * qscale * quant_matrix[i]) >= (1<<36)/249205026 */
|
||||
/* 3444240 >= (1<<36)/(aanscales[i] * qscale * quant_matrix[i]) >= 275 */
|
||||
|
||||
qmat[block_permute_op(i)] = (int)((UINT64_C(1) << (QMAT_SHIFT + 11)) /
|
||||
(aanscales[i] * qscale * quant_matrix[block_permute_op(i)]));
|
||||
}
|
||||
} else {
|
||||
for(i=0;i<64;i++) {
|
||||
/* We can safely suppose that 16 <= quant_matrix[i] <= 255
|
||||
So 16 <= qscale * quant_matrix[i] <= 7905
|
||||
so (1<<19) / 16 >= (1<<19) / (qscale * quant_matrix[i]) >= (1<<19) / 7905
|
||||
so 32768 >= (1<<19) / (qscale * quant_matrix[i]) >= 67
|
||||
*/
|
||||
qmat[i] = (1 << QMAT_SHIFT_MMX) / (qscale * quant_matrix[i]);
|
||||
qmat16[i] = (1 << QMAT_SHIFT_MMX) / (qscale * quant_matrix[block_permute_op(i)]);
|
||||
for(qscale=1; qscale<32; qscale++){
|
||||
int i;
|
||||
if (av_fdct == jpeg_fdct_ifast) {
|
||||
for(i=0;i<64;i++) {
|
||||
const int j= block_permute_op(i);
|
||||
/* 16 <= qscale * quant_matrix[i] <= 7905 */
|
||||
/* 19952 <= aanscales[i] * qscale * quant_matrix[i] <= 249205026 */
|
||||
/* (1<<36)/19952 >= (1<<36)/(aanscales[i] * qscale * quant_matrix[i]) >= (1<<36)/249205026 */
|
||||
/* 3444240 >= (1<<36)/(aanscales[i] * qscale * quant_matrix[i]) >= 275 */
|
||||
|
||||
qmat[qscale][j] = (int)((UINT64_C(1) << (QMAT_SHIFT + 11)) /
|
||||
(aanscales[i] * qscale * quant_matrix[j]));
|
||||
}
|
||||
} else {
|
||||
for(i=0;i<64;i++) {
|
||||
/* We can safely suppose that 16 <= quant_matrix[i] <= 255
|
||||
So 16 <= qscale * quant_matrix[i] <= 7905
|
||||
so (1<<19) / 16 >= (1<<19) / (qscale * quant_matrix[i]) >= (1<<19) / 7905
|
||||
so 32768 >= (1<<19) / (qscale * quant_matrix[i]) >= 67
|
||||
*/
|
||||
qmat [qscale][i] = (1 << QMAT_SHIFT_MMX) / (qscale * quant_matrix[i]);
|
||||
qmat16[qscale][i] = (1 << QMAT_SHIFT_MMX) / (qscale * quant_matrix[block_permute_op(i)]);
|
||||
|
||||
if(qmat16[qscale][i]==0 || qmat16[qscale][i]==128*256) qmat16[qscale][i]=128*256-1;
|
||||
|
||||
qmat16_bias[qscale][i]= ROUNDED_DIV(bias<<(16-QUANT_BIAS_SHIFT), qmat16[qscale][i]);
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
|
|
@ -388,7 +397,8 @@ int MPV_encode_init(AVCodecContext *avctx)
|
|||
s->max_b_frames= avctx->max_b_frames;
|
||||
s->rc_strategy= avctx->rc_strategy;
|
||||
s->b_frame_strategy= avctx->b_frame_strategy;
|
||||
|
||||
s->codec_id= avctx->codec->id;
|
||||
|
||||
if (s->gop_size <= 1) {
|
||||
s->intra_only = 1;
|
||||
s->gop_size = 12;
|
||||
|
|
@ -523,8 +533,21 @@ int MPV_encode_init(AVCodecContext *avctx)
|
|||
|
||||
/* init default q matrix */
|
||||
for(i=0;i<64;i++) {
|
||||
s->intra_matrix[i] = default_intra_matrix[i];
|
||||
s->non_intra_matrix[i] = default_non_intra_matrix[i];
|
||||
if(s->out_format == FMT_H263)
|
||||
s->intra_matrix[i] = default_non_intra_matrix[i];
|
||||
else
|
||||
s->intra_matrix[i] = default_intra_matrix[i];
|
||||
|
||||
s->inter_matrix[i] = default_non_intra_matrix[i];
|
||||
}
|
||||
|
||||
/* precompute matrix */
|
||||
/* for mjpeg, we do include qscale in the matrix */
|
||||
if (s->out_format != FMT_MJPEG) {
|
||||
convert_matrix(s->q_intra_matrix, s->q_intra_matrix16, s->q_intra_matrix16_bias,
|
||||
s->intra_matrix, s->intra_quant_bias);
|
||||
convert_matrix(s->q_inter_matrix, s->q_inter_matrix16, s->q_inter_matrix16_bias,
|
||||
s->inter_matrix, s->inter_quant_bias);
|
||||
}
|
||||
|
||||
if(ff_rate_control_init(s) < 0)
|
||||
|
|
@ -1307,6 +1330,21 @@ void MPV_decode_mb(MpegEncContext *s, DCTELEM block[6][64])
|
|||
emms_c(); //FIXME remove
|
||||
}
|
||||
|
||||
static inline void clip_coeffs(MpegEncContext *s, DCTELEM *block, int last_index)
|
||||
{
|
||||
int i;
|
||||
const int maxlevel= s->max_qcoeff;
|
||||
const int minlevel= s->min_qcoeff;
|
||||
|
||||
for(i=0; i<=last_index; i++){
|
||||
const int j = zigzag_direct[i];
|
||||
int level = block[j];
|
||||
|
||||
if (level>maxlevel) level=maxlevel;
|
||||
else if(level<minlevel) level=minlevel;
|
||||
block[j]= level;
|
||||
}
|
||||
}
|
||||
|
||||
static void encode_mb(MpegEncContext *s, int motion_x, int motion_y)
|
||||
{
|
||||
|
|
@ -1407,8 +1445,19 @@ static void encode_mb(MpegEncContext *s, int motion_x, int motion_y)
|
|||
s->y_dc_scale = 8;
|
||||
s->c_dc_scale = 8;
|
||||
}
|
||||
for(i=0;i<6;i++) {
|
||||
s->block_last_index[i] = dct_quantize(s, s->block[i], i, s->qscale);
|
||||
if(s->out_format==FMT_MJPEG){
|
||||
for(i=0;i<6;i++) {
|
||||
int overflow;
|
||||
s->block_last_index[i] = dct_quantize(s, s->block[i], i, 8, &overflow);
|
||||
if(overflow) clip_coeffs(s, s->block[i], s->block_last_index[i]);
|
||||
}
|
||||
}else{
|
||||
for(i=0;i<6;i++) {
|
||||
int overflow;
|
||||
s->block_last_index[i] = dct_quantize(s, s->block[i], i, s->qscale, &overflow);
|
||||
// FIXME we could decide to change to quantizer instead of clipping
|
||||
if(overflow) clip_coeffs(s, s->block[i], s->block_last_index[i]);
|
||||
}
|
||||
}
|
||||
|
||||
/* huffman encode */
|
||||
|
|
@ -1596,17 +1645,13 @@ static void encode_picture(MpegEncContext *s, int picture_number)
|
|||
else if (!s->fixed_qscale)
|
||||
s->qscale = ff_rate_estimate_qscale(s);
|
||||
|
||||
|
||||
/* precompute matrix */
|
||||
if (s->out_format == FMT_MJPEG) {
|
||||
/* for mjpeg, we do include qscale in the matrix */
|
||||
s->intra_matrix[0] = default_intra_matrix[0];
|
||||
for(i=1;i<64;i++)
|
||||
s->intra_matrix[i] = (default_intra_matrix[i] * s->qscale) >> 3;
|
||||
convert_matrix(s->q_intra_matrix, s->q_intra_matrix16, s->intra_matrix, 8);
|
||||
} else {
|
||||
convert_matrix(s->q_intra_matrix, s->q_intra_matrix16, s->intra_matrix, s->qscale);
|
||||
convert_matrix(s->q_non_intra_matrix, s->q_non_intra_matrix16, s->non_intra_matrix, s->qscale);
|
||||
convert_matrix(s->q_intra_matrix, s->q_intra_matrix16,
|
||||
s->q_intra_matrix16_bias, s->intra_matrix, s->intra_quant_bias);
|
||||
}
|
||||
|
||||
s->last_bits= get_bit_count(&s->pb);
|
||||
|
|
@ -1957,29 +2002,13 @@ static void encode_picture(MpegEncContext *s, int picture_number)
|
|||
|
||||
static int dct_quantize_c(MpegEncContext *s,
|
||||
DCTELEM *block, int n,
|
||||
int qscale)
|
||||
int qscale, int *overflow)
|
||||
{
|
||||
int i, j, level, last_non_zero, q;
|
||||
const int *qmat;
|
||||
int minLevel, maxLevel;
|
||||
|
||||
if(s->avctx!=NULL && s->avctx->codec->id==CODEC_ID_MPEG4){
|
||||
/* mpeg4 */
|
||||
minLevel= -2048;
|
||||
maxLevel= 2047;
|
||||
}else if(s->out_format==FMT_MPEG1){
|
||||
/* mpeg1 */
|
||||
minLevel= -255;
|
||||
maxLevel= 255;
|
||||
}else if(s->out_format==FMT_MJPEG){
|
||||
/* (m)jpeg */
|
||||
minLevel= -1023;
|
||||
maxLevel= 1023;
|
||||
}else{
|
||||
/* h263 / msmpeg4 */
|
||||
minLevel= -128;
|
||||
maxLevel= 127;
|
||||
}
|
||||
int bias;
|
||||
int max=0;
|
||||
unsigned int threshold1, threshold2;
|
||||
|
||||
av_fdct (block);
|
||||
|
||||
|
|
@ -1998,71 +2027,40 @@ static int dct_quantize_c(MpegEncContext *s,
|
|||
block[0] = (block[0] + (q >> 1)) / q;
|
||||
i = 1;
|
||||
last_non_zero = 0;
|
||||
if (s->out_format == FMT_H263) {
|
||||
qmat = s->q_non_intra_matrix;
|
||||
} else {
|
||||
qmat = s->q_intra_matrix;
|
||||
}
|
||||
qmat = s->q_intra_matrix[qscale];
|
||||
bias= s->intra_quant_bias<<(QMAT_SHIFT - 3 - QUANT_BIAS_SHIFT);
|
||||
} else {
|
||||
i = 0;
|
||||
last_non_zero = -1;
|
||||
qmat = s->q_non_intra_matrix;
|
||||
qmat = s->q_inter_matrix[qscale];
|
||||
bias= s->inter_quant_bias<<(QMAT_SHIFT - 3 - QUANT_BIAS_SHIFT);
|
||||
}
|
||||
threshold1= (1<<(QMAT_SHIFT - 3)) - bias - 1;
|
||||
threshold2= threshold1<<1;
|
||||
|
||||
for(;i<64;i++) {
|
||||
j = zigzag_direct[i];
|
||||
level = block[j];
|
||||
level = level * qmat[j];
|
||||
#ifdef PARANOID
|
||||
{
|
||||
static int count = 0;
|
||||
int level1, level2, qmat1;
|
||||
double val;
|
||||
if (qmat == s->q_non_intra_matrix) {
|
||||
qmat1 = default_non_intra_matrix[j] * s->qscale;
|
||||
} else {
|
||||
qmat1 = default_intra_matrix[j] * s->qscale;
|
||||
}
|
||||
if (av_fdct != jpeg_fdct_ifast)
|
||||
val = ((double)block[j] * 8.0) / (double)qmat1;
|
||||
else
|
||||
val = ((double)block[j] * 8.0 * 2048.0) /
|
||||
((double)qmat1 * aanscales[j]);
|
||||
level1 = (int)val;
|
||||
level2 = level / (1 << (QMAT_SHIFT - 3));
|
||||
if (level1 != level2) {
|
||||
fprintf(stderr, "%d: quant error qlevel=%d wanted=%d level=%d qmat1=%d qmat=%d wantedf=%0.6f\n",
|
||||
count, level2, level1, block[j], qmat1, qmat[j],
|
||||
val);
|
||||
count++;
|
||||
}
|
||||
|
||||
}
|
||||
#endif
|
||||
/* XXX: slight error for the low range. Test should be equivalent to
|
||||
(level <= -(1 << (QMAT_SHIFT - 3)) || level >= (1 <<
|
||||
(QMAT_SHIFT - 3)))
|
||||
*/
|
||||
if (((level << (31 - (QMAT_SHIFT - 3))) >> (31 - (QMAT_SHIFT - 3))) !=
|
||||
level) {
|
||||
level = level / (1 << (QMAT_SHIFT - 3));
|
||||
/* XXX: currently, this code is not optimal. the range should be:
|
||||
mpeg1: -255..255
|
||||
mpeg2: -2048..2047
|
||||
h263: -128..127
|
||||
mpeg4: -2048..2047
|
||||
*/
|
||||
if (level > maxLevel)
|
||||
level = maxLevel;
|
||||
else if (level < minLevel)
|
||||
level = minLevel;
|
||||
|
||||
block[j] = level;
|
||||
// if( bias+level >= (1<<(QMAT_SHIFT - 3))
|
||||
// || bias-level >= (1<<(QMAT_SHIFT - 3))){
|
||||
if(((unsigned)(level+threshold1))>threshold2){
|
||||
if(level>0){
|
||||
level= (bias + level)>>(QMAT_SHIFT - 3);
|
||||
block[j]= level;
|
||||
}else{
|
||||
level= (bias - level)>>(QMAT_SHIFT - 3);
|
||||
block[j]= -level;
|
||||
}
|
||||
max |=level;
|
||||
last_non_zero = i;
|
||||
} else {
|
||||
block[j] = 0;
|
||||
}else{
|
||||
block[j]=0;
|
||||
}
|
||||
}
|
||||
*overflow= s->max_qcoeff < max; //overflow might have happend
|
||||
|
||||
return last_non_zero;
|
||||
}
|
||||
|
||||
|
|
@ -2104,7 +2102,7 @@ static void dct_unquantize_mpeg1_c(MpegEncContext *s,
|
|||
}
|
||||
} else {
|
||||
i = 0;
|
||||
quant_matrix = s->non_intra_matrix;
|
||||
quant_matrix = s->inter_matrix;
|
||||
for(;i<nCoeffs;i++) {
|
||||
int j= zigzag_direct[i];
|
||||
level = block[j];
|
||||
|
|
@ -2166,7 +2164,7 @@ static void dct_unquantize_mpeg2_c(MpegEncContext *s,
|
|||
} else {
|
||||
int sum=-1;
|
||||
i = 0;
|
||||
quant_matrix = s->non_intra_matrix;
|
||||
quant_matrix = s->inter_matrix;
|
||||
for(;i<nCoeffs;i++) {
|
||||
int j= zigzag_direct[i];
|
||||
level = block[j];
|
||||
|
|
|
|||
|
|
@ -83,11 +83,15 @@ typedef struct MpegEncContext {
|
|||
int bit_rate; /* wanted bit rate */
|
||||
int bit_rate_tolerance; /* amount of +- bits (>0)*/
|
||||
enum OutputFormat out_format; /* output format */
|
||||
int h263_pred; /* use mpeg4/h263 ac/dc predictions */
|
||||
|
||||
/* the following codec id fields are deprecated in favor of codec_id */
|
||||
int h263_plus; /* h263 plus headers */
|
||||
int h263_rv10; /* use RV10 variation for H263 */
|
||||
int h263_pred; /* use mpeg4/h263 ac/dc predictions */
|
||||
int h263_msmpeg4; /* generate MSMPEG4 compatible stream */
|
||||
int h263_msmpeg4; /* generate MSMPEG4 compatible stream (deprecated, use msmpeg4_version instead)*/
|
||||
int h263_intel; /* use I263 intel h263 header */
|
||||
|
||||
int codec_id; /* see CODEC_ID_xxx */
|
||||
int fixed_qscale; /* fixed qscale if non zero */
|
||||
float qcompress; /* amount of qscale change between easy & hard scenes (0.0-1.0) */
|
||||
float qblur; /* amount of qscale smoothing over time (0.0-1.0) */
|
||||
|
|
@ -213,14 +217,21 @@ typedef struct MpegEncContext {
|
|||
/* matrix transmitted in the bitstream */
|
||||
UINT16 intra_matrix[64];
|
||||
UINT16 chroma_intra_matrix[64];
|
||||
UINT16 non_intra_matrix[64];
|
||||
UINT16 chroma_non_intra_matrix[64];
|
||||
UINT16 inter_matrix[64];
|
||||
UINT16 chroma_inter_matrix[64];
|
||||
#define QUANT_BIAS_SHIFT 4
|
||||
int intra_quant_bias; /* bias for the quantizer */
|
||||
int inter_quant_bias; /* bias for the quantizer */
|
||||
int min_qcoeff; /* minimum encodable coefficient */
|
||||
int max_qcoeff; /* maximum encodable coefficient */
|
||||
/* precomputed matrix (combine qscale and DCT renorm) */
|
||||
int q_intra_matrix[64];
|
||||
int q_non_intra_matrix[64];
|
||||
int q_intra_matrix[32][64];
|
||||
int q_inter_matrix[32][64];
|
||||
/* identical to the above but for MMX & these are not permutated */
|
||||
UINT16 __align8 q_intra_matrix16[64];
|
||||
UINT16 __align8 q_non_intra_matrix16[64];
|
||||
UINT16 __align8 q_intra_matrix16[32][64];
|
||||
UINT16 __align8 q_inter_matrix16[32][64];
|
||||
UINT16 __align8 q_intra_matrix16_bias[32][64];
|
||||
UINT16 __align8 q_inter_matrix16_bias[32][64];
|
||||
int block_last_index[6]; /* last non zero coefficient in block */
|
||||
|
||||
void *opaque; /* private data for the user */
|
||||
|
|
@ -328,7 +339,7 @@ typedef struct MpegEncContext {
|
|||
int first_slice_line; /* used in mpeg4 too to handle resync markers */
|
||||
int flipflop_rounding;
|
||||
int bitrate;
|
||||
int msmpeg4_version; /* 1=mp41, 2=mp42, 3=mp43/divx3 */
|
||||
int msmpeg4_version; /* 0=not msmpeg4, 1=mp41, 2=mp42, 3=mp43/divx3 */
|
||||
/* decompression specific */
|
||||
GetBitContext gb;
|
||||
|
||||
|
|
@ -386,6 +397,8 @@ void MPV_frame_end(MpegEncContext *s);
|
|||
#ifdef HAVE_MMX
|
||||
void MPV_common_init_mmx(MpegEncContext *s);
|
||||
#endif
|
||||
int (*dct_quantize)(MpegEncContext *s, DCTELEM *block, int n, int qscale, int *overflow);
|
||||
void (*draw_edges)(UINT8 *buf, int wrap, int width, int height, int w);
|
||||
|
||||
/* motion_est.c */
|
||||
void ff_estimate_p_frame_motion(MpegEncContext * s,
|
||||
|
|
|
|||
|
|
@ -340,6 +340,7 @@ static int rv10_decode_init(AVCodecContext *avctx)
|
|||
int i;
|
||||
static int done;
|
||||
|
||||
// s->avctx= avctx;
|
||||
s->out_format = FMT_H263;
|
||||
|
||||
s->width = avctx->width;
|
||||
|
|
@ -351,11 +352,6 @@ static int rv10_decode_init(AVCodecContext *avctx)
|
|||
if (MPV_common_init(s) < 0)
|
||||
return -1;
|
||||
|
||||
/* XXX: suppress this matrix init, only needed because using mpeg1
|
||||
dequantize in mmx case */
|
||||
for(i=0;i<64;i++)
|
||||
s->non_intra_matrix[i] = default_non_intra_matrix[i];
|
||||
|
||||
h263_decode_init_vlc(s);
|
||||
|
||||
/* init rv vlc */
|
||||
|
|
|
|||
Loading…
Reference in New Issue