mirror of
https://github.com/FFmpeg/FFmpeg.git
synced 2024-11-26 19:01:44 +02:00
added support for B-frames and multiple slices
Originally committed as revision 1974 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
Mike Melanson
parent
ccdaf63dc3
commit
da3b975630
@ -1038,6 +1038,103 @@ static inline void put_tpel_pixels_mc22_c(uint8_t *dst, const uint8_t *src, int
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dst += stride;
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}
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}
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static inline void avg_tpel_pixels_mc00_c(uint8_t *dst, const uint8_t *src, int stride, int width, int height){
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switch(width){
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case 2: avg_pixels2_c (dst, src, stride, height); break;
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case 4: avg_pixels4_c (dst, src, stride, height); break;
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case 8: avg_pixels8_c (dst, src, stride, height); break;
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case 16:avg_pixels16_c(dst, src, stride, height); break;
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}
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}
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static inline void avg_tpel_pixels_mc10_c(uint8_t *dst, const uint8_t *src, int stride, int width, int height){
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int i,j;
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for (i=0; i < height; i++) {
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for (j=0; j < width; j++) {
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dst[j] = (dst[j] + ((683*(2*src[j] + src[j+1] + 1)) >> 11) + 1) >> 1;
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}
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src += stride;
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dst += stride;
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}
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}
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static inline void avg_tpel_pixels_mc20_c(uint8_t *dst, const uint8_t *src, int stride, int width, int height){
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int i,j;
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for (i=0; i < height; i++) {
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for (j=0; j < width; j++) {
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dst[j] = (dst[j] + ((683*(src[j] + 2*src[j+1] + 1)) >> 11) + 1) >> 1;
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}
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src += stride;
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dst += stride;
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}
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}
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static inline void avg_tpel_pixels_mc01_c(uint8_t *dst, const uint8_t *src, int stride, int width, int height){
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int i,j;
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for (i=0; i < height; i++) {
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for (j=0; j < width; j++) {
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dst[j] = (dst[j] + ((683*(2*src[j] + src[j+stride] + 1)) >> 11) + 1) >> 1;
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}
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src += stride;
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dst += stride;
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}
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}
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static inline void avg_tpel_pixels_mc11_c(uint8_t *dst, const uint8_t *src, int stride, int width, int height){
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int i,j;
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for (i=0; i < height; i++) {
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for (j=0; j < width; j++) {
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dst[j] = (dst[j] + ((2731*(4*src[j] + 3*src[j+1] + 3*src[j+stride] + 2*src[j+stride+1] + 6)) >> 15) + 1) >> 1;
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}
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src += stride;
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dst += stride;
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}
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}
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static inline void avg_tpel_pixels_mc12_c(uint8_t *dst, const uint8_t *src, int stride, int width, int height){
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int i,j;
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for (i=0; i < height; i++) {
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for (j=0; j < width; j++) {
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dst[j] = (dst[j] + ((2731*(3*src[j] + 4*src[j+1] + 2*src[j+stride] + 3*src[j+stride+1] + 6)) >> 15) + 1) >> 1;
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}
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src += stride;
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dst += stride;
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}
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}
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static inline void avg_tpel_pixels_mc02_c(uint8_t *dst, const uint8_t *src, int stride, int width, int height){
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int i,j;
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for (i=0; i < height; i++) {
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for (j=0; j < width; j++) {
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dst[j] = (dst[j] + ((683*(src[j] + 2*src[j+stride] + 1)) >> 11) + 1) >> 1;
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}
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src += stride;
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dst += stride;
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}
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}
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static inline void avg_tpel_pixels_mc21_c(uint8_t *dst, const uint8_t *src, int stride, int width, int height){
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int i,j;
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for (i=0; i < height; i++) {
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for (j=0; j < width; j++) {
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dst[j] = (dst[j] + ((2731*(3*src[j] + 2*src[j+1] + 4*src[j+stride] + 3*src[j+stride+1] + 6)) >> 15) + 1) >> 1;
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}
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src += stride;
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dst += stride;
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}
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}
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static inline void avg_tpel_pixels_mc22_c(uint8_t *dst, const uint8_t *src, int stride, int width, int height){
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int i,j;
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for (i=0; i < height; i++) {
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for (j=0; j < width; j++) {
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dst[j] = (dst[j] + ((2731*(2*src[j] + 3*src[j+1] + 3*src[j+stride] + 4*src[j+stride+1] + 6)) >> 15) + 1) >> 1;
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}
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src += stride;
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dst += stride;
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}
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}
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#if 0
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#define TPEL_WIDTH(width)\
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static void put_tpel_pixels ## width ## _mc00_c(uint8_t *dst, const uint8_t *src, int stride, int height){\
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@ -2809,6 +2906,8 @@ void dsputil_init(DSPContext* c, AVCodecContext *avctx)
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dspfunc(avg_no_rnd, 0, 16);
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dspfunc(avg, 1, 8);
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dspfunc(avg_no_rnd, 1, 8);
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dspfunc(avg, 2, 4);
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dspfunc(avg, 3, 2);
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#undef dspfunc
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c->put_tpel_pixels_tab[ 0] = put_tpel_pixels_mc00_c;
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@ -2821,6 +2920,16 @@ void dsputil_init(DSPContext* c, AVCodecContext *avctx)
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c->put_tpel_pixels_tab[ 9] = put_tpel_pixels_mc12_c;
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c->put_tpel_pixels_tab[10] = put_tpel_pixels_mc22_c;
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c->avg_tpel_pixels_tab[ 0] = avg_tpel_pixels_mc00_c;
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c->avg_tpel_pixels_tab[ 1] = avg_tpel_pixels_mc10_c;
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c->avg_tpel_pixels_tab[ 2] = avg_tpel_pixels_mc20_c;
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c->avg_tpel_pixels_tab[ 4] = avg_tpel_pixels_mc01_c;
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c->avg_tpel_pixels_tab[ 5] = avg_tpel_pixels_mc11_c;
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c->avg_tpel_pixels_tab[ 6] = avg_tpel_pixels_mc21_c;
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c->avg_tpel_pixels_tab[ 8] = avg_tpel_pixels_mc02_c;
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c->avg_tpel_pixels_tab[ 9] = avg_tpel_pixels_mc12_c;
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c->avg_tpel_pixels_tab[10] = avg_tpel_pixels_mc22_c;
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#define dspfunc(PFX, IDX, NUM) \
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c->PFX ## _pixels_tab[IDX][ 0] = PFX ## NUM ## _mc00_c; \
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c->PFX ## _pixels_tab[IDX][ 1] = PFX ## NUM ## _mc10_c; \
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@ -162,15 +162,15 @@ typedef struct DSPContext {
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/**
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* Halfpel motion compensation with rounding (a+b+1)>>1.
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* this is an array[2][4] of motion compensation funcions for 2
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* horizontal blocksizes (8,16) and the 4 halfpel positions<br>
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* This is an array[2][4] of motion compensation functions for 2
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* horizontal blocksizes (2,4,8,16) and the 4 halfpel positions<br>
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* *pixels_tab[ 0->16xH 1->8xH ][ xhalfpel + 2*yhalfpel ]
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* @param block destination into which the result is averaged (a+b+1)>>1
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* @param pixels source
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* @param line_size number of bytes in a horizontal line of block
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* @param h height
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*/
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op_pixels_func avg_pixels_tab[2][4];
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op_pixels_func avg_pixels_tab[4][4];
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/**
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* Halfpel motion compensation with no rounding (a+b)>>1.
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@ -206,7 +206,8 @@ typedef struct DSPContext {
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* @param h height
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*/
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tpel_mc_func put_tpel_pixels_tab[11]; //FIXME individual func ptr per width?
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tpel_mc_func avg_tpel_pixels_tab[11]; //FIXME individual func ptr per width?
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qpel_mc_func put_qpel_pixels_tab[2][16];
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qpel_mc_func avg_qpel_pixels_tab[2][16];
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qpel_mc_func put_no_rnd_qpel_pixels_tab[2][16];
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@ -198,6 +198,9 @@ typedef struct H264Context{
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int halfpel_flag;
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int thirdpel_flag;
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int unknown_svq3_flag;
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int next_slice_index;
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SPS sps_buffer[MAX_SPS_COUNT];
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SPS sps; ///< current sps
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@ -262,8 +262,12 @@ static inline int svq3_decode_block (GetBitContext *gb, DCTELEM *block,
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return 0;
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}
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static inline void svq3_mc_dir_part (MpegEncContext *s, int x, int y,
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int width, int height, int mx, int my, int dxy, int thirdpel) {
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static inline void svq3_mc_dir_part (MpegEncContext *s,
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int x, int y, int width, int height,
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int mx, int my, int dxy,
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int thirdpel, int dir, int avg) {
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const Picture *pic = (dir == 0) ? &s->last_picture : &s->next_picture;
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uint8_t *src, *dest;
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int i, emu = 0;
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int blocksize= 2 - (width>>3); //16->0, 8->1, 4->2
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@ -284,17 +288,17 @@ static inline void svq3_mc_dir_part (MpegEncContext *s, int x, int y,
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/* form component predictions */
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dest = s->current_picture.data[0] + x + y*s->linesize;
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src = s->last_picture.data[0] + mx + my*s->linesize;
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src = pic->data[0] + mx + my*s->linesize;
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if (emu) {
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ff_emulated_edge_mc(s->edge_emu_buffer, src, s->linesize, (width + 1), (height + 1),
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ff_emulated_edge_mc (s, src, s->linesize, (width + 1), (height + 1),
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mx, my, s->h_edge_pos, s->v_edge_pos);
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src = s->edge_emu_buffer;
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}
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if(thirdpel)
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s->dsp.put_tpel_pixels_tab[dxy](dest, src, s->linesize, width, height);
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(avg ? s->dsp.avg_tpel_pixels_tab : s->dsp.put_tpel_pixels_tab)[dxy](dest, src, s->linesize, width, height);
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else
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s->dsp.put_pixels_tab[blocksize][dxy](dest, src, s->linesize, height);
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(avg ? s->dsp.avg_pixels_tab : s->dsp.put_pixels_tab)[blocksize][dxy](dest, src, s->linesize, height);
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if (!(s->flags & CODEC_FLAG_GRAY)) {
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mx = (mx + (mx < (int) x)) >> 1;
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@ -305,17 +309,17 @@ static inline void svq3_mc_dir_part (MpegEncContext *s, int x, int y,
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for (i=1; i < 3; i++) {
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dest = s->current_picture.data[i] + (x >> 1) + (y >> 1)*s->uvlinesize;
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src = s->last_picture.data[i] + mx + my*s->uvlinesize;
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src = pic->data[i] + mx + my*s->uvlinesize;
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if (emu) {
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ff_emulated_edge_mc(s->edge_emu_buffer, src, s->uvlinesize, (width + 1), (height + 1),
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ff_emulated_edge_mc (s, src, s->uvlinesize, (width + 1), (height + 1),
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mx, my, (s->h_edge_pos >> 1), (s->v_edge_pos >> 1));
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src = s->edge_emu_buffer;
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}
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if(thirdpel)
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s->dsp.put_tpel_pixels_tab[dxy](dest, src, s->uvlinesize, width, height);
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(avg ? s->dsp.avg_tpel_pixels_tab : s->dsp.put_tpel_pixels_tab)[dxy](dest, src, s->uvlinesize, width, height);
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else
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s->dsp.put_pixels_tab[blocksize][dxy](dest, src, s->uvlinesize, height);
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(avg ? s->dsp.avg_pixels_tab : s->dsp.put_pixels_tab)[blocksize][dxy](dest, src, s->uvlinesize, height);
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}
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}
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}
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@ -334,11 +338,52 @@ static int svq3_decode_mb (H264Context *h, unsigned int mb_type) {
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h->topright_samples_available = 0xFFFF;
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if (mb_type == 0) { /* SKIP */
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svq3_mc_dir_part (s, 16*s->mb_x, 16*s->mb_y, 16, 16, 0, 0, 0, 0);
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if (s->pict_type == P_TYPE) {
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svq3_mc_dir_part (s, 16*s->mb_x, 16*s->mb_y, 16, 16, 0, 0, 0, 0, 0, 0);
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cbp = 0;
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mb_type = MB_TYPE_SKIP;
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cbp = 0;
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mb_type = MB_TYPE_SKIP;
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} else {
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for (dir=0; dir < 2; dir++) {
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for (i=0; i < 4; i++) {
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for (j=0; j < 4; j++) {
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int dxy;
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x = 16*s->mb_x + 4*j;
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y = 16*s->mb_y + 4*i;
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mx = 2*s->next_picture.motion_val[0][b_xy + j + i*h->b_stride][0];
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my = 2*s->next_picture.motion_val[0][b_xy + j + i*h->b_stride][1];
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if (dir == 0) {
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mx = (mx * h->frame_num_offset) / h->prev_frame_num_offset;
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my = (my * h->frame_num_offset) / h->prev_frame_num_offset;
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} else {
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mx = (mx * (h->frame_num_offset - h->prev_frame_num_offset)) / h->prev_frame_num_offset;
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my = (my * (h->frame_num_offset - h->prev_frame_num_offset)) / h->prev_frame_num_offset;
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}
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mx = ((unsigned)(mx + 3 + 0x6000))/6 - 0x1000;
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my = ((unsigned)(my + 3 + 0x6000))/6 - 0x1000;
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dxy= (mx&1) + 2*(my&1);
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/* update mv_cache */
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s->current_picture.motion_val[dir][b_xy + j + i*h->b_stride][0] = 3*mx;
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s->current_picture.motion_val[dir][b_xy + j + i*h->b_stride][1] = 3*my;
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svq3_mc_dir_part (s, x, y, 4, 4, mx>>1, my>>1, dxy, 0, dir, (dir == 1));
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}
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}
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}
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if ((vlc = svq3_get_ue_golomb (&s->gb)) >= 48)
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return -1;
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cbp = golomb_to_inter_cbp[vlc];
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mb_type = MB_TYPE_16x16;
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}
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} else if (mb_type < 8) { /* INTER */
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int dir0, dir1;
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if (h->thirdpel_flag && h->halfpel_flag == !get_bits (&s->gb, 1)) {
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mode = THIRDPEL_MODE;
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} else if (h->halfpel_flag && h->thirdpel_flag == !get_bits (&s->gb, 1)) {
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@ -348,7 +393,7 @@ static int svq3_decode_mb (H264Context *h, unsigned int mb_type) {
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}
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/* fill caches */
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/* note ref_cache[0] should contain here:
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/* note ref_cache should contain here:
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????????
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???11111
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N??11111
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@ -357,44 +402,62 @@ static int svq3_decode_mb (H264Context *h, unsigned int mb_type) {
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N
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*/
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if (s->mb_x > 0) {
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for (i=0; i < 4; i++) {
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*(uint32_t *) h->mv_cache[0][scan8[0] - 1 + i*8] = *(uint32_t *) s->current_picture.motion_val[0][b_xy - 1 + i*h->b_stride];
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for (m=0; m < 2; m++) {
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if (s->mb_x > 0 && h->intra4x4_pred_mode[mb_xy - 1][0] != -1) {
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for (i=0; i < 4; i++) {
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*(uint32_t *) h->mv_cache[m][scan8[0] - 1 + i*8] = *(uint32_t *) s->current_picture.motion_val[m][b_xy - 1 + i*h->b_stride];
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}
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} else {
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for (i=0; i < 4; i++) {
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*(uint32_t *) h->mv_cache[m][scan8[0] - 1 + i*8] = 0;
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}
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}
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} else {
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for (i=0; i < 4; i++) {
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*(uint32_t *) h->mv_cache[0][scan8[0] - 1 + i*8] = 0;
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}
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}
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if (s->mb_y > 0) {
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memcpy (h->mv_cache[0][scan8[0] - 1*8], s->current_picture.motion_val[0][b_xy - h->b_stride], 4*2*sizeof(int16_t));
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memset (&h->ref_cache[0][scan8[0] - 1*8], 1, 4);
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if (s->mb_y > 0) {
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memcpy (h->mv_cache[m][scan8[0] - 1*8], s->current_picture.motion_val[m][b_xy - h->b_stride], 4*2*sizeof(int16_t));
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memset (&h->ref_cache[m][scan8[0] - 1*8], (h->intra4x4_pred_mode[mb_xy - s->mb_stride][4] == -1) ? PART_NOT_AVAILABLE : 1, 4);
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if (s->mb_x < (s->mb_width - 1)) {
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*(uint32_t *) h->mv_cache[0][scan8[0] + 4 - 1*8] = *(uint32_t *) s->current_picture.motion_val[0][b_xy - h->b_stride + 4];
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h->ref_cache[0][scan8[0] + 4 - 1*8] = 1;
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if (s->mb_x < (s->mb_width - 1)) {
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*(uint32_t *) h->mv_cache[m][scan8[0] + 4 - 1*8] = *(uint32_t *) s->current_picture.motion_val[m][b_xy - h->b_stride + 4];
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h->ref_cache[m][scan8[0] + 4 - 1*8] =
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(h->intra4x4_pred_mode[mb_xy - s->mb_stride + 1][0] == -1 ||
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h->intra4x4_pred_mode[mb_xy - s->mb_stride][4] == -1) ? PART_NOT_AVAILABLE : 1;
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}else
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h->ref_cache[m][scan8[0] + 4 - 1*8] = PART_NOT_AVAILABLE;
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if (s->mb_x > 0) {
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*(uint32_t *) h->mv_cache[0][scan8[0] - 1 - 1*8] = *(uint32_t *) s->current_picture.motion_val[m][b_xy - h->b_stride - 1];
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h->ref_cache[m][scan8[0] - 1 - 1*8] = (h->intra4x4_pred_mode[mb_xy - s->mb_stride - 1][3] == -1) ? PART_NOT_AVAILABLE : 1;
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}else
|
||||
h->ref_cache[m][scan8[0] - 1 - 1*8] = PART_NOT_AVAILABLE;
|
||||
}else
|
||||
h->ref_cache[0][scan8[0] + 4 - 1*8] = PART_NOT_AVAILABLE;
|
||||
if (s->mb_x > 0) {
|
||||
*(uint32_t *) h->mv_cache[0][scan8[0] - 1 - 1*8] = *(uint32_t *) s->current_picture.motion_val[0][b_xy - h->b_stride - 1];
|
||||
h->ref_cache[0][scan8[0] - 1 - 1*8] = 1;
|
||||
}else
|
||||
h->ref_cache[0][scan8[0] - 1 - 1*8] = PART_NOT_AVAILABLE;
|
||||
}else
|
||||
memset (&h->ref_cache[0][scan8[0] - 1*8 - 1], PART_NOT_AVAILABLE, 8);
|
||||
memset (&h->ref_cache[m][scan8[0] - 1*8 - 1], PART_NOT_AVAILABLE, 8);
|
||||
|
||||
if (s->pict_type != B_TYPE)
|
||||
break;
|
||||
}
|
||||
|
||||
/* decode motion vector(s) and form prediction(s) */
|
||||
part_width = ((mb_type & 5) == 5) ? 4 : 8 << (mb_type & 1);
|
||||
part_height = 16 >> ((unsigned) mb_type / 3);
|
||||
if (s->pict_type == P_TYPE) {
|
||||
part_width = ((mb_type & 5) == 5) ? 4 : 8 << (mb_type & 1);
|
||||
part_height = 16 >> ((unsigned) mb_type / 3);
|
||||
dir0 = 0;
|
||||
dir1 = 0;
|
||||
} else { /* B_TYPE */
|
||||
part_width = 16;
|
||||
part_height = 16;
|
||||
dir0 = (mb_type == 2) ? 1 : 0;
|
||||
dir1 = (mb_type == 1) ? 0 : 1;
|
||||
}
|
||||
|
||||
for (dir=dir0; dir <= dir1; dir++) {
|
||||
for (i=0; i < 16; i+=part_height) {
|
||||
for (j=0; j < 16; j+=part_width) {
|
||||
int dxy;
|
||||
int avg=(dir == 1 && dir0 != dir1);
|
||||
int dxy;
|
||||
x = 16*s->mb_x + j;
|
||||
y = 16*s->mb_y + i;
|
||||
k = ((j>>2)&1) + ((i>>1)&2) + ((j>>1)&4) + (i&8);
|
||||
|
||||
pred_motion (h, k, (part_width >> 2), 0, 1, &mx, &my);
|
||||
pred_motion (h, k, (part_width >> 2), dir, 1, &mx, &my);
|
||||
|
||||
/* clip motion vector prediction to frame border */
|
||||
mx = clip (mx, -6*x, 6*(s->h_edge_pos - part_width - x));
|
||||
@ -416,7 +479,7 @@ static int svq3_decode_mb (H264Context *h, unsigned int mb_type) {
|
||||
fy= ((unsigned)(my + 0x3000))/3 - 0x1000;
|
||||
dxy= (mx - 3*fx) + 4*(my - 3*fy);
|
||||
|
||||
svq3_mc_dir_part (s, x, y, part_width, part_height, fx, fy, dxy, 1);
|
||||
svq3_mc_dir_part (s, x, y, part_width, part_height, fx, fy, dxy, 1, dir, avg);
|
||||
mx += mx;
|
||||
my += my;
|
||||
} else if (mode == HALFPEL_MODE) {
|
||||
@ -424,7 +487,7 @@ static int svq3_decode_mb (H264Context *h, unsigned int mb_type) {
|
||||
my = ((unsigned)(my + 1 + 0x3000))/3 + dy - 0x1000;
|
||||
dxy= (mx&1) + 2*(my&1);
|
||||
|
||||
svq3_mc_dir_part (s, x, y, part_width, part_height, mx>>1, my>>1, dxy, 0);
|
||||
svq3_mc_dir_part (s, x, y, part_width, part_height, mx>>1, my>>1, dxy, 0, dir, avg);
|
||||
mx *= 3;
|
||||
my *= 3;
|
||||
} else {
|
||||
@ -432,18 +495,37 @@ static int svq3_decode_mb (H264Context *h, unsigned int mb_type) {
|
||||
mx = ((unsigned)(mx + 3 + 0x6000))/6 + dx - 0x1000;
|
||||
my = ((unsigned)(my + 3 + 0x6000))/6 + dy - 0x1000;
|
||||
|
||||
svq3_mc_dir_part (s, x, y, part_width, part_height, mx, my, 0, 0);
|
||||
svq3_mc_dir_part (s, x, y, part_width, part_height, mx, my, 0, 0, dir, avg);
|
||||
mx *= 6;
|
||||
my *= 6;
|
||||
}
|
||||
|
||||
/* update mv_cache */
|
||||
fill_rectangle(h->mv_cache[0][scan8[k]], part_width>>2, part_height>>2, 8, pack16to32(mx,my), 4);
|
||||
fill_rectangle(h->mv_cache[dir][scan8[k]], part_width>>2, part_height>>2, 8, pack16to32(mx,my), 4);
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
for (i=0; i < 4; i++) {
|
||||
memcpy (s->current_picture.motion_val[0][b_xy + i*h->b_stride], h->mv_cache[0][scan8[0] + 8*i], 4*2*sizeof(int16_t));
|
||||
/* write back or clear motion vectors */
|
||||
if (s->pict_type == P_TYPE || mb_type != 2) {
|
||||
for (i=0; i < 4; i++) {
|
||||
memcpy (s->current_picture.motion_val[0][b_xy + i*h->b_stride], h->mv_cache[0][scan8[0] + 8*i], 4*2*sizeof(int16_t));
|
||||
}
|
||||
} else {
|
||||
for (i=0; i < 4; i++) {
|
||||
memset (s->current_picture.motion_val[0][b_xy + i*h->b_stride], 0, 4*2*sizeof(int16_t));
|
||||
}
|
||||
}
|
||||
if (s->pict_type == B_TYPE) {
|
||||
if (mb_type != 1) {
|
||||
for (i=0; i < 4; i++) {
|
||||
memcpy (s->current_picture.motion_val[1][b_xy + i*h->b_stride], h->mv_cache[1][scan8[0] + 8*i], 4*2*sizeof(int16_t));
|
||||
}
|
||||
} else {
|
||||
for (i=0; i < 4; i++) {
|
||||
memset (s->current_picture.motion_val[1][b_xy + i*h->b_stride], 0, 4*2*sizeof(int16_t));
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
if ((vlc = svq3_get_ue_golomb (&s->gb)) >= 48)
|
||||
@ -451,40 +533,67 @@ static int svq3_decode_mb (H264Context *h, unsigned int mb_type) {
|
||||
|
||||
cbp = golomb_to_inter_cbp[vlc];
|
||||
mb_type = MB_TYPE_16x16;
|
||||
} else if (mb_type == 8) { /* INTRA4x4 */
|
||||
} else if (mb_type == 8 || mb_type == 33) { /* INTRA4x4 */
|
||||
memset (h->intra4x4_pred_mode_cache, -1, 8*5*sizeof(int8_t));
|
||||
|
||||
if (s->mb_x > 0) {
|
||||
for (i=0; i < 4; i++) {
|
||||
h->intra4x4_pred_mode_cache[scan8[0] - 1 + i*8] = h->intra4x4_pred_mode[mb_xy - 1][i];
|
||||
if (mb_type == 8) {
|
||||
if (s->mb_x > 0) {
|
||||
for (i=0; i < 4; i++) {
|
||||
h->intra4x4_pred_mode_cache[scan8[0] - 1 + i*8] = h->intra4x4_pred_mode[mb_xy - 1][i];
|
||||
}
|
||||
if (h->intra4x4_pred_mode_cache[scan8[0] - 1] == -1) {
|
||||
h->left_samples_available = 0x5F5F;
|
||||
}
|
||||
}
|
||||
}
|
||||
if (s->mb_y > 0) {
|
||||
h->intra4x4_pred_mode_cache[4+8*0] = h->intra4x4_pred_mode[mb_xy - s->mb_stride][4];
|
||||
h->intra4x4_pred_mode_cache[5+8*0] = h->intra4x4_pred_mode[mb_xy - s->mb_stride][5];
|
||||
h->intra4x4_pred_mode_cache[6+8*0] = h->intra4x4_pred_mode[mb_xy - s->mb_stride][6];
|
||||
h->intra4x4_pred_mode_cache[7+8*0] = h->intra4x4_pred_mode[mb_xy - s->mb_stride][3];
|
||||
}
|
||||
if (s->mb_y > 0) {
|
||||
h->intra4x4_pred_mode_cache[4+8*0] = h->intra4x4_pred_mode[mb_xy - s->mb_stride][4];
|
||||
h->intra4x4_pred_mode_cache[5+8*0] = h->intra4x4_pred_mode[mb_xy - s->mb_stride][5];
|
||||
h->intra4x4_pred_mode_cache[6+8*0] = h->intra4x4_pred_mode[mb_xy - s->mb_stride][6];
|
||||
h->intra4x4_pred_mode_cache[7+8*0] = h->intra4x4_pred_mode[mb_xy - s->mb_stride][3];
|
||||
|
||||
/* decode prediction codes for luma blocks */
|
||||
for (i=0; i < 16; i+=2) {
|
||||
vlc = svq3_get_ue_golomb (&s->gb);
|
||||
if (h->intra4x4_pred_mode_cache[4+8*0] == -1) {
|
||||
h->top_samples_available = 0x33FF;
|
||||
}
|
||||
}
|
||||
|
||||
if (vlc >= 25)
|
||||
return -1;
|
||||
/* decode prediction codes for luma blocks */
|
||||
for (i=0; i < 16; i+=2) {
|
||||
vlc = svq3_get_ue_golomb (&s->gb);
|
||||
|
||||
left = &h->intra4x4_pred_mode_cache[scan8[i] - 1];
|
||||
top = &h->intra4x4_pred_mode_cache[scan8[i] - 8];
|
||||
if (vlc >= 25)
|
||||
return -1;
|
||||
|
||||
left[1] = svq3_pred_1[top[0] + 1][left[0] + 1][svq3_pred_0[vlc][0]];
|
||||
left[2] = svq3_pred_1[top[1] + 1][left[1] + 1][svq3_pred_0[vlc][1]];
|
||||
left = &h->intra4x4_pred_mode_cache[scan8[i] - 1];
|
||||
top = &h->intra4x4_pred_mode_cache[scan8[i] - 8];
|
||||
|
||||
if (left[1] == -1 || left[2] == -1)
|
||||
return -1;
|
||||
left[1] = svq3_pred_1[top[0] + 1][left[0] + 1][svq3_pred_0[vlc][0]];
|
||||
left[2] = svq3_pred_1[top[1] + 1][left[1] + 1][svq3_pred_0[vlc][1]];
|
||||
|
||||
if (left[1] == -1 || left[2] == -1)
|
||||
return -1;
|
||||
}
|
||||
} else {
|
||||
/* DC_128_PRED block type */
|
||||
for (i=0; i < 4; i++) {
|
||||
memset (&h->intra4x4_pred_mode_cache[scan8[0] + 8*i], DC_PRED, 4);
|
||||
}
|
||||
}
|
||||
|
||||
write_back_intra_pred_mode (h);
|
||||
check_intra4x4_pred_mode (h);
|
||||
|
||||
if (mb_type == 8) {
|
||||
check_intra4x4_pred_mode (h);
|
||||
|
||||
h->top_samples_available = (s->mb_y == 0) ? 0x33FF : 0xFFFF;
|
||||
h->left_samples_available = (s->mb_x == 0) ? 0x5F5F : 0xFFFF;
|
||||
} else {
|
||||
for (i=0; i < 4; i++) {
|
||||
memset (&h->intra4x4_pred_mode_cache[scan8[0] + 8*i], DC_128_PRED, 4);
|
||||
}
|
||||
|
||||
h->top_samples_available = 0x33FF;
|
||||
h->left_samples_available = 0x5F5F;
|
||||
}
|
||||
|
||||
if ((vlc = svq3_get_ue_golomb (&s->gb)) >= 48)
|
||||
return -1;
|
||||
@ -506,6 +615,11 @@ static int svq3_decode_mb (H264Context *h, unsigned int mb_type) {
|
||||
for (i=0; i < 4; i++) {
|
||||
memset (s->current_picture.motion_val[0][b_xy + i*h->b_stride], 0, 4*2*sizeof(int16_t));
|
||||
}
|
||||
if (s->pict_type == B_TYPE) {
|
||||
for (i=0; i < 4; i++) {
|
||||
memset (s->current_picture.motion_val[1][b_xy + i*h->b_stride], 0, 4*2*sizeof(int16_t));
|
||||
}
|
||||
}
|
||||
}
|
||||
if (!IS_INTRA4x4(mb_type)) {
|
||||
memset (h->intra4x4_pred_mode[mb_xy], DC_PRED, 8);
|
||||
@ -568,12 +682,89 @@ static int svq3_decode_mb (H264Context *h, unsigned int mb_type) {
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int svq3_decode_slice_header (H264Context *h) {
|
||||
MpegEncContext *const s = (MpegEncContext *) h;
|
||||
const int mb_xy = s->mb_x + s->mb_y*s->mb_stride;
|
||||
int i, header;
|
||||
|
||||
header = get_bits (&s->gb, 8);
|
||||
|
||||
if (((header & 0x9F) != 1 && (header & 0x9F) != 2) || (header & 0x60) == 0) {
|
||||
/* TODO: what? */
|
||||
fprintf (stderr, "unsupported slice header (%02X)\n", header);
|
||||
return -1;
|
||||
} else {
|
||||
int length = (header >> 5) & 3;
|
||||
|
||||
h->next_slice_index = s->gb.index + 8*show_bits (&s->gb, 8*length) + 8*length;
|
||||
|
||||
if (h->next_slice_index > s->gb.size_in_bits)
|
||||
return -1;
|
||||
|
||||
s->gb.size_in_bits = h->next_slice_index - 8*(length - 1);
|
||||
s->gb.index += 8;
|
||||
|
||||
if (length > 0) {
|
||||
memcpy ((uint8_t *) &s->gb.buffer[s->gb.index >> 3],
|
||||
&s->gb.buffer[s->gb.size_in_bits >> 3], (length - 1));
|
||||
}
|
||||
}
|
||||
|
||||
if ((i = svq3_get_ue_golomb (&s->gb)) == INVALID_VLC || i >= 3)
|
||||
return -1;
|
||||
|
||||
h->slice_type = golomb_to_pict_type[i];
|
||||
|
||||
if ((header & 0x9F) == 2) {
|
||||
i = (s->mb_num < 64) ? 6 : (1 + av_log2 (s->mb_num - 1));
|
||||
s->mb_skip_run = get_bits (&s->gb, i) - (s->mb_x + (s->mb_y * s->mb_width));
|
||||
} else {
|
||||
get_bits1 (&s->gb);
|
||||
s->mb_skip_run = 0;
|
||||
}
|
||||
|
||||
h->slice_num = get_bits (&s->gb, 8);
|
||||
s->qscale = get_bits (&s->gb, 5);
|
||||
s->adaptive_quant = get_bits1 (&s->gb);
|
||||
|
||||
/* unknown fields */
|
||||
get_bits1 (&s->gb);
|
||||
|
||||
if (h->unknown_svq3_flag) {
|
||||
get_bits1 (&s->gb);
|
||||
}
|
||||
|
||||
get_bits1 (&s->gb);
|
||||
get_bits (&s->gb, 2);
|
||||
|
||||
while (get_bits1 (&s->gb)) {
|
||||
get_bits (&s->gb, 8);
|
||||
}
|
||||
|
||||
/* reset intra predictors and invalidate motion vector references */
|
||||
if (s->mb_x > 0) {
|
||||
memset (h->intra4x4_pred_mode[mb_xy - 1], -1, 4*sizeof(int8_t));
|
||||
memset (h->intra4x4_pred_mode[mb_xy - s->mb_x], -1, 8*sizeof(int8_t)*s->mb_x);
|
||||
}
|
||||
if (s->mb_y > 0) {
|
||||
memset (h->intra4x4_pred_mode[mb_xy - s->mb_stride], -1, 8*sizeof(int8_t)*(s->mb_width - s->mb_x));
|
||||
|
||||
if (s->mb_x > 0) {
|
||||
h->intra4x4_pred_mode[mb_xy - s->mb_stride - 1][3] = -1;
|
||||
}
|
||||
}
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int svq3_decode_frame (AVCodecContext *avctx,
|
||||
void *data, int *data_size,
|
||||
uint8_t *buf, int buf_size) {
|
||||
MpegEncContext *const s = avctx->priv_data;
|
||||
H264Context *const h = avctx->priv_data;
|
||||
int i;
|
||||
int m, mb_type;
|
||||
|
||||
*data_size = 0;
|
||||
|
||||
s->flags = avctx->flags;
|
||||
|
||||
@ -584,6 +775,7 @@ static int svq3_decode_frame (AVCodecContext *avctx,
|
||||
h->pred16x16[PLANE_PRED8x8] = pred16x16_plane_svq3_c;
|
||||
h->halfpel_flag = 1;
|
||||
h->thirdpel_flag = 1;
|
||||
h->unknown_svq3_flag = 0;
|
||||
h->chroma_qp = 4;
|
||||
|
||||
if (MPV_common_init (s) < 0)
|
||||
@ -592,67 +784,63 @@ static int svq3_decode_frame (AVCodecContext *avctx,
|
||||
h->b_stride = 4*s->mb_width;
|
||||
|
||||
alloc_tables (h);
|
||||
}
|
||||
|
||||
s->low_delay= 1;
|
||||
|
||||
if (avctx->extradata && avctx->extradata_size >= 0x63
|
||||
&& !memcmp (avctx->extradata, "SVQ3", 4)) {
|
||||
|
||||
uint8_t *stsd = (uint8_t *) avctx->extradata + 0x62;
|
||||
if (avctx->extradata && avctx->extradata_size >= 0x64
|
||||
&& !memcmp (avctx->extradata, "SVQ3", 4)) {
|
||||
|
||||
if ((*stsd >> 5) != 7 || avctx->extradata_size >= 0x66) {
|
||||
GetBitContext gb;
|
||||
|
||||
if ((*stsd >> 5) == 7) {
|
||||
stsd += 3; /* skip width, height (12 bits each) */
|
||||
init_get_bits (&gb, (uint8_t *) avctx->extradata + 0x62,
|
||||
8*(avctx->extradata_size - 0x62));
|
||||
|
||||
/* 'frame size code' and optional 'width, height' */
|
||||
if (get_bits (&gb, 3) == 7) {
|
||||
get_bits (&gb, 12);
|
||||
get_bits (&gb, 12);
|
||||
}
|
||||
|
||||
h->halfpel_flag = (*stsd >> 4) & 1;
|
||||
h->thirdpel_flag = (*stsd >> 3) & 1;
|
||||
h->halfpel_flag = get_bits1 (&gb);
|
||||
h->thirdpel_flag = get_bits1 (&gb);
|
||||
|
||||
/* unknown fields */
|
||||
get_bits1 (&gb);
|
||||
get_bits1 (&gb);
|
||||
get_bits1 (&gb);
|
||||
get_bits1 (&gb);
|
||||
|
||||
s->low_delay = get_bits1 (&gb);
|
||||
|
||||
/* unknown field */
|
||||
get_bits1 (&gb);
|
||||
|
||||
while (get_bits1 (&gb)) {
|
||||
get_bits (&gb, 8);
|
||||
}
|
||||
|
||||
h->unknown_svq3_flag = get_bits1 (&gb);
|
||||
avctx->has_b_frames = !s->low_delay;
|
||||
}
|
||||
}
|
||||
|
||||
if ((buf[0] & 0x9F) != 1) {
|
||||
/* TODO: what? */
|
||||
fprintf (stderr, "unsupported header (%02X)\n", buf[0]);
|
||||
return -1;
|
||||
} else {
|
||||
int length = (buf[0] >> 5) & 3;
|
||||
int offset = 0;
|
||||
|
||||
for (i=0; i < length; i++) {
|
||||
offset = (offset << 8) | buf[i + 1];
|
||||
/* special case for last picture */
|
||||
if (buf_size == 0) {
|
||||
if (s->next_picture_ptr && !s->low_delay) {
|
||||
*(AVFrame *) data = *(AVFrame *) &s->next_picture;
|
||||
*data_size = sizeof(AVFrame);
|
||||
}
|
||||
|
||||
if (buf_size < (offset + length + 1) || length == 0)
|
||||
return -1;
|
||||
|
||||
memcpy (&buf[2], &buf[offset + 2], (length - 1));
|
||||
return 0;
|
||||
}
|
||||
|
||||
init_get_bits (&s->gb, &buf[2], 8*(buf_size - 2));
|
||||
init_get_bits (&s->gb, buf, 8*buf_size);
|
||||
|
||||
if ((i = svq3_get_ue_golomb (&s->gb)) == INVALID_VLC || i >= 3)
|
||||
s->mb_x = s->mb_y = 0;
|
||||
|
||||
if (svq3_decode_slice_header (h))
|
||||
return -1;
|
||||
|
||||
s->pict_type = golomb_to_pict_type[i];
|
||||
s->pict_type = h->slice_type;
|
||||
s->picture_number = h->slice_num;
|
||||
|
||||
/* unknown fields */
|
||||
get_bits (&s->gb, 1);
|
||||
get_bits (&s->gb, 8);
|
||||
|
||||
s->qscale = get_bits (&s->gb, 5);
|
||||
s->adaptive_quant = get_bits (&s->gb, 1);
|
||||
|
||||
/* unknown fields */
|
||||
get_bits (&s->gb, 1);
|
||||
get_bits (&s->gb, 1);
|
||||
get_bits (&s->gb, 2);
|
||||
|
||||
while (get_bits (&s->gb, 1)) {
|
||||
get_bits (&s->gb, 8);
|
||||
}
|
||||
|
||||
if(avctx->debug&FF_DEBUG_PICT_INFO){
|
||||
printf("%c hpel:%d, tpel:%d aqp:%d qp:%d\n",
|
||||
av_get_pict_type_char(s->pict_type), h->halfpel_flag, h->thirdpel_flag,
|
||||
@ -660,27 +848,79 @@ static int svq3_decode_frame (AVCodecContext *avctx,
|
||||
);
|
||||
}
|
||||
|
||||
/* B-frames are not supported */
|
||||
if (s->pict_type == B_TYPE/* && avctx->hurry_up*/)
|
||||
return buf_size;
|
||||
/* for hurry_up==5 */
|
||||
s->current_picture.pict_type = s->pict_type;
|
||||
s->current_picture.key_frame = (s->pict_type == I_TYPE);
|
||||
|
||||
/* skip b frames if we dont have reference frames */
|
||||
if (s->last_picture_ptr == NULL && s->pict_type == B_TYPE) return 0;
|
||||
/* skip b frames if we are in a hurry */
|
||||
if (avctx->hurry_up && s->pict_type == B_TYPE) return 0;
|
||||
/* skip everything if we are in a hurry >= 5 */
|
||||
if (avctx->hurry_up >= 5) return 0;
|
||||
|
||||
if (s->next_p_frame_damaged) {
|
||||
if (s->pict_type == B_TYPE)
|
||||
return 0;
|
||||
else
|
||||
s->next_p_frame_damaged = 0;
|
||||
}
|
||||
|
||||
frame_start (h);
|
||||
|
||||
for(i=0; i<4; i++){
|
||||
int j;
|
||||
for(j=-1; j<4; j++)
|
||||
h->ref_cache[0][scan8[0] + 8*i + j]= 1;
|
||||
h->ref_cache[0][scan8[0] + 8*i + j]= PART_NOT_AVAILABLE;
|
||||
if (s->pict_type == B_TYPE) {
|
||||
h->frame_num_offset = (h->slice_num - h->prev_frame_num);
|
||||
|
||||
if (h->frame_num_offset < 0) {
|
||||
h->frame_num_offset += 256;
|
||||
}
|
||||
if (h->frame_num_offset == 0 || h->frame_num_offset >= h->prev_frame_num_offset) {
|
||||
printf ("error in B-frame picture id\n");
|
||||
return -1;
|
||||
}
|
||||
} else {
|
||||
h->prev_frame_num = h->frame_num;
|
||||
h->frame_num = h->slice_num;
|
||||
h->prev_frame_num_offset = (h->frame_num - h->prev_frame_num);
|
||||
|
||||
if (h->prev_frame_num_offset < 0) {
|
||||
h->prev_frame_num_offset += 256;
|
||||
}
|
||||
}
|
||||
|
||||
for(m=0; m<2; m++){
|
||||
int i;
|
||||
for(i=0; i<4; i++){
|
||||
int j;
|
||||
for(j=-1; j<4; j++)
|
||||
h->ref_cache[m][scan8[0] + 8*i + j]= 1;
|
||||
h->ref_cache[m][scan8[0] + 8*i + j]= PART_NOT_AVAILABLE;
|
||||
}
|
||||
}
|
||||
|
||||
for (s->mb_y=0; s->mb_y < s->mb_height; s->mb_y++) {
|
||||
for (s->mb_x=0; s->mb_x < s->mb_width; s->mb_x++) {
|
||||
int mb_type = svq3_get_ue_golomb (&s->gb);
|
||||
|
||||
if ( (s->gb.index + 7) >= s->gb.size_in_bits &&
|
||||
((s->gb.index & 7) == 0 || show_bits (&s->gb, (-s->gb.index & 7)) == 0)) {
|
||||
|
||||
s->gb.index = h->next_slice_index;
|
||||
s->gb.size_in_bits = 8*buf_size;
|
||||
|
||||
if (svq3_decode_slice_header (h))
|
||||
return -1;
|
||||
|
||||
/* TODO: support s->mb_skip_run */
|
||||
}
|
||||
|
||||
mb_type = svq3_get_ue_golomb (&s->gb);
|
||||
|
||||
if (s->pict_type == I_TYPE) {
|
||||
mb_type += 8;
|
||||
} else if (s->pict_type == B_TYPE && mb_type >= 4) {
|
||||
mb_type += 4;
|
||||
}
|
||||
if (mb_type > 32 || svq3_decode_mb (h, mb_type)) {
|
||||
if (mb_type > 33 || svq3_decode_mb (h, mb_type)) {
|
||||
fprintf (stderr, "error while decoding MB %d %d\n", s->mb_x, s->mb_y);
|
||||
return -1;
|
||||
}
|
||||
@ -693,11 +933,21 @@ static int svq3_decode_frame (AVCodecContext *avctx,
|
||||
ff_draw_horiz_band(s, 16*s->mb_y, 16);
|
||||
}
|
||||
|
||||
*(AVFrame *) data = *(AVFrame *) &s->current_picture;
|
||||
*data_size = sizeof(AVFrame);
|
||||
|
||||
MPV_frame_end(s);
|
||||
|
||||
|
||||
if (s->pict_type == B_TYPE || s->low_delay) {
|
||||
*(AVFrame *) data = *(AVFrame *) &s->current_picture;
|
||||
} else {
|
||||
*(AVFrame *) data = *(AVFrame *) &s->last_picture;
|
||||
}
|
||||
|
||||
avctx->frame_number = s->picture_number - 1;
|
||||
|
||||
/* dont output the last pic after seeking */
|
||||
if (s->last_picture_ptr || s->low_delay) {
|
||||
*data_size = sizeof(AVFrame);
|
||||
}
|
||||
|
||||
return buf_size;
|
||||
}
|
||||
|
||||
|
||||
Loading…
Reference in New Issue
Block a user