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1/2 resolution decoding

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Originally committed as revision 3507 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
Michael Niedermayer 2004-09-25 23:18:58 +00:00
parent bc133816c0
commit 178fcca848
10 changed files with 724 additions and 73 deletions
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6
ffmpeg.c
View File

@ -188,6 +188,8 @@ static int predictor = 0;
static int video_profile = FF_PROFILE_UNKNOWN;
static int video_level = FF_LEVEL_UNKNOWN;
static int nsse_weight = 8;
static int subpel_quality= 8;
static int lowres= 0;
extern int loop_input; /* currently a hack */
static int gop_size = 12;
@ -3148,6 +3150,8 @@ static void opt_output_file(const char *filename)
video_enc->profile= video_profile;
video_enc->level= video_level;
video_enc->nsse_weight= nsse_weight;
video_enc->me_subpel_quality= subpel_quality;
video_enc->lowres= lowres;
if(packet_size){
video_enc->rtp_mode= 1;
@ -3840,6 +3844,8 @@ const OptionDef options[] = {
{ "vprofile", OPT_INT | HAS_ARG | OPT_EXPERT | OPT_VIDEO, {(void*)&video_profile}, "profile", "" },
{ "vlevel", OPT_INT | HAS_ARG | OPT_EXPERT | OPT_VIDEO, {(void*)&video_level}, "level", "" },
{ "nssew", OPT_INT | HAS_ARG | OPT_EXPERT | OPT_VIDEO, {(void*)&nsse_weight}, "weight", "" },
{ "subq", OPT_INT | HAS_ARG | OPT_EXPERT | OPT_VIDEO, {(void*)&subpel_quality}, "", "" },
{ "lowres", OPT_INT | HAS_ARG | OPT_EXPERT | OPT_VIDEO, {(void*)&lowres}, "", "" },
/* audio options */
{ "ab", HAS_ARG | OPT_AUDIO, {(void*)opt_audio_bitrate}, "set audio bitrate (in kbit/s)", "bitrate", },

6
ffplay.c
View File

@ -171,6 +171,8 @@ static int step = 0;
static int thread_count = 1;
static int workaround_bugs = 1;
static int fast = 0;
static int lowres = 0;
static int idct = FF_IDCT_AUTO;
/* current context */
static int is_full_screen;
@ -1173,6 +1175,8 @@ static int stream_component_open(VideoState *is, int stream_index)
enc->debug_mv = debug_mv;
enc->debug = debug;
enc->workaround_bugs = workaround_bugs;
enc->lowres = lowres;
enc->idct_algo= idct;
if(fast) enc->flags2 |= CODEC_FLAG2_FAST;
if (!codec ||
avcodec_open(enc, codec) < 0)
@ -1832,6 +1836,8 @@ const OptionDef options[] = {
{ "bug", OPT_INT | HAS_ARG | OPT_EXPERT, {(void*)&workaround_bugs}, "workaround bugs", "" },
{ "vismv", HAS_ARG | OPT_EXPERT, {(void*)opt_vismv}, "visualize motion vectors", "" },
{ "fast", OPT_BOOL | OPT_EXPERT, {(void*)&fast}, "non spec compliant optimizations", "" },
{ "lowres", OPT_INT | HAS_ARG | OPT_EXPERT, {(void*)&lowres}, "", "" },
{ "idct", OPT_INT | HAS_ARG | OPT_EXPERT, {(void*)&idct}, "set idct algo", "algo" },
#ifdef CONFIG_NETWORK
{ "rtp_tcp", OPT_EXPERT, {(void*)&opt_rtp_tcp}, "force RTP/TCP protocol usage", "" },
#endif

10
libavcodec/avcodec.h
View File

@ -17,7 +17,7 @@ extern "C" {
#define FFMPEG_VERSION_INT 0x000409
#define FFMPEG_VERSION "0.4.9-pre1"
#define LIBAVCODEC_BUILD 4721
#define LIBAVCODEC_BUILD 4722
#define LIBAVCODEC_VERSION_INT FFMPEG_VERSION_INT
#define LIBAVCODEC_VERSION FFMPEG_VERSION
@ -1111,6 +1111,7 @@ typedef struct AVCodecContext {
#define FF_IDCT_ALTIVEC 8
#define FF_IDCT_SH4 9
#define FF_IDCT_SIMPLEARM 10
#define FF_IDCT_INT4 11
/**
* slice count.
@ -1656,6 +1657,13 @@ typedef struct AVCodecContext {
*/
int level;
#define FF_LEVEL_UNKNOWN -99
/**
* low resolution decoding. 1-> 1/2 size, 2->1/4 size
* - encoding: unused
* - decoding: set by user
*/
int lowres;
} AVCodecContext;

71
libavcodec/dsputil.c
View File

@ -446,6 +446,24 @@ static void put_pixels_clamped_c(const DCTELEM *block, uint8_t *restrict pixels,
}
}
static void put_pixels_clamped4_c(const DCTELEM *block, uint8_t *restrict pixels,
int line_size)
{
int i;
uint8_t *cm = cropTbl + MAX_NEG_CROP;
/* read the pixels */
for(i=0;i<4;i++) {
pixels[0] = cm[block[0]];
pixels[1] = cm[block[1]];
pixels[2] = cm[block[2]];
pixels[3] = cm[block[3]];
pixels += line_size;
block += 8;
}
}
static void put_signed_pixels_clamped_c(const DCTELEM *block,
uint8_t *restrict pixels,
int line_size)
@ -487,6 +505,23 @@ static void add_pixels_clamped_c(const DCTELEM *block, uint8_t *restrict pixels,
block += 8;
}
}
static void add_pixels_clamped4_c(const DCTELEM *block, uint8_t *restrict pixels,
int line_size)
{
int i;
uint8_t *cm = cropTbl + MAX_NEG_CROP;
/* read the pixels */
for(i=0;i<4;i++) {
pixels[0] = cm[pixels[0] + block[0]];
pixels[1] = cm[pixels[1] + block[1]];
pixels[2] = cm[pixels[2] + block[2]];
pixels[3] = cm[pixels[3] + block[3]];
pixels += line_size;
block += 8;
}
}
#if 0
#define PIXOP2(OPNAME, OP) \
@ -3294,6 +3329,17 @@ static void ff_jref_idct_add(uint8_t *dest, int line_size, DCTELEM *block)
add_pixels_clamped_c(block, dest, line_size);
}
static void ff_jref_idct4_put(uint8_t *dest, int line_size, DCTELEM *block)
{
j_rev_dct4 (block);
put_pixels_clamped4_c(block, dest, line_size);
}
static void ff_jref_idct4_add(uint8_t *dest, int line_size, DCTELEM *block)
{
j_rev_dct4 (block);
add_pixels_clamped4_c(block, dest, line_size);
}
/* init static data */
void dsputil_static_init(void)
{
@ -3332,16 +3378,23 @@ void dsputil_init(DSPContext* c, AVCodecContext *avctx)
}
#endif //CONFIG_ENCODERS
if(avctx->idct_algo==FF_IDCT_INT){
c->idct_put= ff_jref_idct_put;
c->idct_add= ff_jref_idct_add;
c->idct = j_rev_dct;
c->idct_permutation_type= FF_LIBMPEG2_IDCT_PERM;
}else{ //accurate/default
c->idct_put= simple_idct_put;
c->idct_add= simple_idct_add;
c->idct = simple_idct;
if(avctx->lowres==1){
c->idct_put= ff_jref_idct4_put;
c->idct_add= ff_jref_idct4_add;
c->idct = j_rev_dct4;
c->idct_permutation_type= FF_NO_IDCT_PERM;
}else{
if(avctx->idct_algo==FF_IDCT_INT){
c->idct_put= ff_jref_idct_put;
c->idct_add= ff_jref_idct_add;
c->idct = j_rev_dct;
c->idct_permutation_type= FF_LIBMPEG2_IDCT_PERM;
}else{ //accurate/default
c->idct_put= simple_idct_put;
c->idct_add= simple_idct_add;
c->idct = simple_idct;
c->idct_permutation_type= FF_NO_IDCT_PERM;
}
}
/* VP3 DSP support */

1
libavcodec/dsputil.h
View File

@ -42,6 +42,7 @@ void ff_jpeg_fdct_islow (DCTELEM *data);
void ff_fdct248_islow (DCTELEM *data);
void j_rev_dct (DCTELEM *data);
void j_rev_dct4 (DCTELEM *data);
void ff_fdct_mmx(DCTELEM *block);
void ff_fdct_mmx2(DCTELEM *block);

33
libavcodec/i386/dsputil_mmx.c
View File

@ -2984,23 +2984,24 @@ void dsputil_init_mmx(DSPContext* c, AVCodecContext *avctx)
}
}
#endif //CONFIG_ENCODERS
if(idct_algo==FF_IDCT_AUTO || idct_algo==FF_IDCT_SIMPLEMMX){
c->idct_put= ff_simple_idct_put_mmx;
c->idct_add= ff_simple_idct_add_mmx;
c->idct = ff_simple_idct_mmx;
c->idct_permutation_type= FF_SIMPLE_IDCT_PERM;
}else if(idct_algo==FF_IDCT_LIBMPEG2MMX){
if(mm_flags & MM_MMXEXT){
c->idct_put= ff_libmpeg2mmx2_idct_put;
c->idct_add= ff_libmpeg2mmx2_idct_add;
c->idct = ff_mmxext_idct;
}else{
c->idct_put= ff_libmpeg2mmx_idct_put;
c->idct_add= ff_libmpeg2mmx_idct_add;
c->idct = ff_mmx_idct;
if(avctx->lowres==0){
if(idct_algo==FF_IDCT_AUTO || idct_algo==FF_IDCT_SIMPLEMMX){
c->idct_put= ff_simple_idct_put_mmx;
c->idct_add= ff_simple_idct_add_mmx;
c->idct = ff_simple_idct_mmx;
c->idct_permutation_type= FF_SIMPLE_IDCT_PERM;
}else if(idct_algo==FF_IDCT_LIBMPEG2MMX){
if(mm_flags & MM_MMXEXT){
c->idct_put= ff_libmpeg2mmx2_idct_put;
c->idct_add= ff_libmpeg2mmx2_idct_add;
c->idct = ff_mmxext_idct;
}else{
c->idct_put= ff_libmpeg2mmx_idct_put;
c->idct_add= ff_libmpeg2mmx_idct_add;
c->idct = ff_mmx_idct;
}
c->idct_permutation_type= FF_LIBMPEG2_IDCT_PERM;
}
c->idct_permutation_type= FF_LIBMPEG2_IDCT_PERM;
}
/* VP3 optimized DSP functions */

456
libavcodec/jrevdct.c
View File

@ -1172,5 +1172,461 @@ void j_rev_dct(DCTBLOCK data)
}
}
#undef DCTSIZE
#define DCTSIZE 4
#define DCTSTRIDE 8
void j_rev_dct4(DCTBLOCK data)
{
int32_t tmp0, tmp1, tmp2, tmp3;
int32_t tmp10, tmp11, tmp12, tmp13;
int32_t z1;
int32_t d0, d2, d4, d6;
register DCTELEM *dataptr;
int rowctr;
/* Pass 1: process rows. */
/* Note results are scaled up by sqrt(8) compared to a true IDCT; */
/* furthermore, we scale the results by 2**PASS1_BITS. */
dataptr = data;
for (rowctr = DCTSIZE-1; rowctr >= 0; rowctr--) {
/* Due to quantization, we will usually find that many of the input
* coefficients are zero, especially the AC terms. We can exploit this
* by short-circuiting the IDCT calculation for any row in which all
* the AC terms are zero. In that case each output is equal to the
* DC coefficient (with scale factor as needed).
* With typical images and quantization tables, half or more of the
* row DCT calculations can be simplified this way.
*/
register int *idataptr = (int*)dataptr;
/* WARNING: we do the same permutation as MMX idct to simplify the
video core */
d0 = dataptr[0];
d2 = dataptr[1];
d4 = dataptr[2];
d6 = dataptr[3];
if ((d2 | d4 | d6) == 0) {
/* AC terms all zero */
if (d0) {
/* Compute a 32 bit value to assign. */
DCTELEM dcval = (DCTELEM) (d0 << PASS1_BITS);
register int v = (dcval & 0xffff) | ((dcval << 16) & 0xffff0000);
idataptr[0] = v;
idataptr[1] = v;
}
dataptr += DCTSTRIDE; /* advance pointer to next row */
continue;
}
/* Even part: reverse the even part of the forward DCT. */
/* The rotator is sqrt(2)*c(-6). */
if (d6) {
if (d4) {
if (d2) {
if (d0) {
/* d0 != 0, d2 != 0, d4 != 0, d6 != 0 */
z1 = MULTIPLY(d2 + d6, FIX_0_541196100);
tmp2 = z1 + MULTIPLY(-d6, FIX_1_847759065);
tmp3 = z1 + MULTIPLY(d2, FIX_0_765366865);
tmp0 = (d0 + d4) << CONST_BITS;
tmp1 = (d0 - d4) << CONST_BITS;
tmp10 = tmp0 + tmp3;
tmp13 = tmp0 - tmp3;
tmp11 = tmp1 + tmp2;
tmp12 = tmp1 - tmp2;
} else {
/* d0 == 0, d2 != 0, d4 != 0, d6 != 0 */
z1 = MULTIPLY(d2 + d6, FIX_0_541196100);
tmp2 = z1 + MULTIPLY(-d6, FIX_1_847759065);
tmp3 = z1 + MULTIPLY(d2, FIX_0_765366865);
tmp0 = d4 << CONST_BITS;
tmp10 = tmp0 + tmp3;
tmp13 = tmp0 - tmp3;
tmp11 = tmp2 - tmp0;
tmp12 = -(tmp0 + tmp2);
}
} else {
if (d0) {
/* d0 != 0, d2 == 0, d4 != 0, d6 != 0 */
tmp2 = MULTIPLY(-d6, FIX_1_306562965);
tmp3 = MULTIPLY(d6, FIX_0_541196100);
tmp0 = (d0 + d4) << CONST_BITS;
tmp1 = (d0 - d4) << CONST_BITS;
tmp10 = tmp0 + tmp3;
tmp13 = tmp0 - tmp3;
tmp11 = tmp1 + tmp2;
tmp12 = tmp1 - tmp2;
} else {
/* d0 == 0, d2 == 0, d4 != 0, d6 != 0 */
tmp2 = MULTIPLY(-d6, FIX_1_306562965);
tmp3 = MULTIPLY(d6, FIX_0_541196100);
tmp0 = d4 << CONST_BITS;
tmp10 = tmp0 + tmp3;
tmp13 = tmp0 - tmp3;
tmp11 = tmp2 - tmp0;
tmp12 = -(tmp0 + tmp2);
}
}
} else {
if (d2) {
if (d0) {
/* d0 != 0, d2 != 0, d4 == 0, d6 != 0 */
z1 = MULTIPLY(d2 + d6, FIX_0_541196100);
tmp2 = z1 + MULTIPLY(-d6, FIX_1_847759065);
tmp3 = z1 + MULTIPLY(d2, FIX_0_765366865);
tmp0 = d0 << CONST_BITS;
tmp10 = tmp0 + tmp3;
tmp13 = tmp0 - tmp3;
tmp11 = tmp0 + tmp2;
tmp12 = tmp0 - tmp2;
} else {
/* d0 == 0, d2 != 0, d4 == 0, d6 != 0 */
z1 = MULTIPLY(d2 + d6, FIX_0_541196100);
tmp2 = z1 + MULTIPLY(-d6, FIX_1_847759065);
tmp3 = z1 + MULTIPLY(d2, FIX_0_765366865);
tmp10 = tmp3;
tmp13 = -tmp3;
tmp11 = tmp2;
tmp12 = -tmp2;
}
} else {
if (d0) {
/* d0 != 0, d2 == 0, d4 == 0, d6 != 0 */
tmp2 = MULTIPLY(-d6, FIX_1_306562965);
tmp3 = MULTIPLY(d6, FIX_0_541196100);
tmp0 = d0 << CONST_BITS;
tmp10 = tmp0 + tmp3;
tmp13 = tmp0 - tmp3;
tmp11 = tmp0 + tmp2;
tmp12 = tmp0 - tmp2;
} else {
/* d0 == 0, d2 == 0, d4 == 0, d6 != 0 */
tmp2 = MULTIPLY(-d6, FIX_1_306562965);
tmp3 = MULTIPLY(d6, FIX_0_541196100);
tmp10 = tmp3;
tmp13 = -tmp3;
tmp11 = tmp2;
tmp12 = -tmp2;
}
}
}
} else {
if (d4) {
if (d2) {
if (d0) {
/* d0 != 0, d2 != 0, d4 != 0, d6 == 0 */
tmp2 = MULTIPLY(d2, FIX_0_541196100);
tmp3 = MULTIPLY(d2, FIX_1_306562965);
tmp0 = (d0 + d4) << CONST_BITS;
tmp1 = (d0 - d4) << CONST_BITS;
tmp10 = tmp0 + tmp3;
tmp13 = tmp0 - tmp3;
tmp11 = tmp1 + tmp2;
tmp12 = tmp1 - tmp2;
} else {
/* d0 == 0, d2 != 0, d4 != 0, d6 == 0 */
tmp2 = MULTIPLY(d2, FIX_0_541196100);
tmp3 = MULTIPLY(d2, FIX_1_306562965);
tmp0 = d4 << CONST_BITS;
tmp10 = tmp0 + tmp3;
tmp13 = tmp0 - tmp3;
tmp11 = tmp2 - tmp0;
tmp12 = -(tmp0 + tmp2);
}
} else {
if (d0) {
/* d0 != 0, d2 == 0, d4 != 0, d6 == 0 */
tmp10 = tmp13 = (d0 + d4) << CONST_BITS;
tmp11 = tmp12 = (d0 - d4) << CONST_BITS;
} else {
/* d0 == 0, d2 == 0, d4 != 0, d6 == 0 */
tmp10 = tmp13 = d4 << CONST_BITS;
tmp11 = tmp12 = -tmp10;
}
}
} else {
if (d2) {
if (d0) {
/* d0 != 0, d2 != 0, d4 == 0, d6 == 0 */
tmp2 = MULTIPLY(d2, FIX_0_541196100);
tmp3 = MULTIPLY(d2, FIX_1_306562965);
tmp0 = d0 << CONST_BITS;
tmp10 = tmp0 + tmp3;
tmp13 = tmp0 - tmp3;
tmp11 = tmp0 + tmp2;
tmp12 = tmp0 - tmp2;
} else {
/* d0 == 0, d2 != 0, d4 == 0, d6 == 0 */
tmp2 = MULTIPLY(d2, FIX_0_541196100);
tmp3 = MULTIPLY(d2, FIX_1_306562965);
tmp10 = tmp3;
tmp13 = -tmp3;
tmp11 = tmp2;
tmp12 = -tmp2;
}
} else {
if (d0) {
/* d0 != 0, d2 == 0, d4 == 0, d6 == 0 */
tmp10 = tmp13 = tmp11 = tmp12 = d0 << CONST_BITS;
} else {
/* d0 == 0, d2 == 0, d4 == 0, d6 == 0 */
tmp10 = tmp13 = tmp11 = tmp12 = 0;
}
}
}
}
/* Final output stage: inputs are tmp10..tmp13, tmp0..tmp3 */
dataptr[0] = (DCTELEM) DESCALE(tmp10, CONST_BITS-PASS1_BITS);
dataptr[1] = (DCTELEM) DESCALE(tmp11, CONST_BITS-PASS1_BITS);
dataptr[2] = (DCTELEM) DESCALE(tmp12, CONST_BITS-PASS1_BITS);
dataptr[3] = (DCTELEM) DESCALE(tmp13, CONST_BITS-PASS1_BITS);
dataptr += DCTSTRIDE; /* advance pointer to next row */
}
/* Pass 2: process columns. */
/* Note that we must descale the results by a factor of 8 == 2**3, */
/* and also undo the PASS1_BITS scaling. */
dataptr = data;
for (rowctr = DCTSIZE-1; rowctr >= 0; rowctr--) {
/* Columns of zeroes can be exploited in the same way as we did with rows.
* However, the row calculation has created many nonzero AC terms, so the
* simplification applies less often (typically 5% to 10% of the time).
* On machines with very fast multiplication, it's possible that the
* test takes more time than it's worth. In that case this section
* may be commented out.
*/
d0 = dataptr[DCTSTRIDE*0];
d2 = dataptr[DCTSTRIDE*1];
d4 = dataptr[DCTSTRIDE*2];
d6 = dataptr[DCTSTRIDE*3];
/* Even part: reverse the even part of the forward DCT. */
/* The rotator is sqrt(2)*c(-6). */
if (d6) {
if (d4) {
if (d2) {
if (d0) {
/* d0 != 0, d2 != 0, d4 != 0, d6 != 0 */
z1 = MULTIPLY(d2 + d6, FIX_0_541196100);
tmp2 = z1 + MULTIPLY(-d6, FIX_1_847759065);
tmp3 = z1 + MULTIPLY(d2, FIX_0_765366865);
tmp0 = (d0 + d4) << CONST_BITS;
tmp1 = (d0 - d4) << CONST_BITS;
tmp10 = tmp0 + tmp3;
tmp13 = tmp0 - tmp3;
tmp11 = tmp1 + tmp2;
tmp12 = tmp1 - tmp2;
} else {
/* d0 == 0, d2 != 0, d4 != 0, d6 != 0 */
z1 = MULTIPLY(d2 + d6, FIX_0_541196100);
tmp2 = z1 + MULTIPLY(-d6, FIX_1_847759065);
tmp3 = z1 + MULTIPLY(d2, FIX_0_765366865);
tmp0 = d4 << CONST_BITS;
tmp10 = tmp0 + tmp3;
tmp13 = tmp0 - tmp3;
tmp11 = tmp2 - tmp0;
tmp12 = -(tmp0 + tmp2);
}
} else {
if (d0) {
/* d0 != 0, d2 == 0, d4 != 0, d6 != 0 */
tmp2 = MULTIPLY(-d6, FIX_1_306562965);
tmp3 = MULTIPLY(d6, FIX_0_541196100);
tmp0 = (d0 + d4) << CONST_BITS;
tmp1 = (d0 - d4) << CONST_BITS;
tmp10 = tmp0 + tmp3;
tmp13 = tmp0 - tmp3;
tmp11 = tmp1 + tmp2;
tmp12 = tmp1 - tmp2;
} else {
/* d0 == 0, d2 == 0, d4 != 0, d6 != 0 */
tmp2 = MULTIPLY(-d6, FIX_1_306562965);
tmp3 = MULTIPLY(d6, FIX_0_541196100);
tmp0 = d4 << CONST_BITS;
tmp10 = tmp0 + tmp3;
tmp13 = tmp0 - tmp3;
tmp11 = tmp2 - tmp0;
tmp12 = -(tmp0 + tmp2);
}
}
} else {
if (d2) {
if (d0) {
/* d0 != 0, d2 != 0, d4 == 0, d6 != 0 */
z1 = MULTIPLY(d2 + d6, FIX_0_541196100);
tmp2 = z1 + MULTIPLY(-d6, FIX_1_847759065);
tmp3 = z1 + MULTIPLY(d2, FIX_0_765366865);
tmp0 = d0 << CONST_BITS;
tmp10 = tmp0 + tmp3;
tmp13 = tmp0 - tmp3;
tmp11 = tmp0 + tmp2;
tmp12 = tmp0 - tmp2;
} else {
/* d0 == 0, d2 != 0, d4 == 0, d6 != 0 */
z1 = MULTIPLY(d2 + d6, FIX_0_541196100);
tmp2 = z1 + MULTIPLY(-d6, FIX_1_847759065);
tmp3 = z1 + MULTIPLY(d2, FIX_0_765366865);
tmp10 = tmp3;
tmp13 = -tmp3;
tmp11 = tmp2;
tmp12 = -tmp2;
}
} else {
if (d0) {
/* d0 != 0, d2 == 0, d4 == 0, d6 != 0 */
tmp2 = MULTIPLY(-d6, FIX_1_306562965);
tmp3 = MULTIPLY(d6, FIX_0_541196100);
tmp0 = d0 << CONST_BITS;
tmp10 = tmp0 + tmp3;
tmp13 = tmp0 - tmp3;
tmp11 = tmp0 + tmp2;
tmp12 = tmp0 - tmp2;
} else {
/* d0 == 0, d2 == 0, d4 == 0, d6 != 0 */
tmp2 = MULTIPLY(-d6, FIX_1_306562965);
tmp3 = MULTIPLY(d6, FIX_0_541196100);
tmp10 = tmp3;
tmp13 = -tmp3;
tmp11 = tmp2;
tmp12 = -tmp2;
}
}
}
} else {
if (d4) {
if (d2) {
if (d0) {
/* d0 != 0, d2 != 0, d4 != 0, d6 == 0 */
tmp2 = MULTIPLY(d2, FIX_0_541196100);
tmp3 = MULTIPLY(d2, FIX_1_306562965);
tmp0 = (d0 + d4) << CONST_BITS;
tmp1 = (d0 - d4) << CONST_BITS;
tmp10 = tmp0 + tmp3;
tmp13 = tmp0 - tmp3;
tmp11 = tmp1 + tmp2;
tmp12 = tmp1 - tmp2;
} else {
/* d0 == 0, d2 != 0, d4 != 0, d6 == 0 */
tmp2 = MULTIPLY(d2, FIX_0_541196100);
tmp3 = MULTIPLY(d2, FIX_1_306562965);
tmp0 = d4 << CONST_BITS;
tmp10 = tmp0 + tmp3;
tmp13 = tmp0 - tmp3;
tmp11 = tmp2 - tmp0;
tmp12 = -(tmp0 + tmp2);
}
} else {
if (d0) {
/* d0 != 0, d2 == 0, d4 != 0, d6 == 0 */
tmp10 = tmp13 = (d0 + d4) << CONST_BITS;
tmp11 = tmp12 = (d0 - d4) << CONST_BITS;
} else {
/* d0 == 0, d2 == 0, d4 != 0, d6 == 0 */
tmp10 = tmp13 = d4 << CONST_BITS;
tmp11 = tmp12 = -tmp10;
}
}
} else {
if (d2) {
if (d0) {
/* d0 != 0, d2 != 0, d4 == 0, d6 == 0 */
tmp2 = MULTIPLY(d2, FIX_0_541196100);
tmp3 = MULTIPLY(d2, FIX_1_306562965);
tmp0 = d0 << CONST_BITS;
tmp10 = tmp0 + tmp3;
tmp13 = tmp0 - tmp3;
tmp11 = tmp0 + tmp2;
tmp12 = tmp0 - tmp2;
} else {
/* d0 == 0, d2 != 0, d4 == 0, d6 == 0 */
tmp2 = MULTIPLY(d2, FIX_0_541196100);
tmp3 = MULTIPLY(d2, FIX_1_306562965);
tmp10 = tmp3;
tmp13 = -tmp3;
tmp11 = tmp2;
tmp12 = -tmp2;
}
} else {
if (d0) {
/* d0 != 0, d2 == 0, d4 == 0, d6 == 0 */
tmp10 = tmp13 = tmp11 = tmp12 = d0 << CONST_BITS;
} else {
/* d0 == 0, d2 == 0, d4 == 0, d6 == 0 */
tmp10 = tmp13 = tmp11 = tmp12 = 0;
}
}
}
}
/* Final output stage: inputs are tmp10..tmp13, tmp0..tmp3 */
dataptr[DCTSTRIDE*0] = (DCTELEM) DESCALE(tmp10,
CONST_BITS+PASS1_BITS+3);
dataptr[DCTSTRIDE*1] = (DCTELEM) DESCALE(tmp11,
CONST_BITS+PASS1_BITS+3);
dataptr[DCTSTRIDE*2] = (DCTELEM) DESCALE(tmp12,
CONST_BITS+PASS1_BITS+3);
dataptr[DCTSTRIDE*3] = (DCTELEM) DESCALE(tmp13,
CONST_BITS+PASS1_BITS+3);
dataptr++; /* advance pointer to next column */
}
}
#undef FIX
#undef CONST_BITS

7
libavcodec/mpeg12.c
View File

@ -2409,6 +2409,7 @@ static int mpeg_decode_slice(Mpeg1Context *s1, int mb_y,
AVCodecContext *avctx= s->avctx;
int ret;
const int field_pic= s->picture_structure != PICT_FRAME;
const int lowres= s->avctx->lowres;
s->resync_mb_x=
s->resync_mb_y= -1;
@ -2518,9 +2519,9 @@ static int mpeg_decode_slice(Mpeg1Context *s1, int mb_y,
}
}
s->dest[0] += 16;
s->dest[1] += 16 >> s->chroma_x_shift;
s->dest[2] += 16 >> s->chroma_x_shift;
s->dest[0] += 16 >> lowres;
s->dest[1] += 16 >> (s->chroma_x_shift + lowres);
s->dest[2] += 16 >> (s->chroma_x_shift + lowres);
MPV_decode_mb(s, s->block);

199
libavcodec/mpegvideo.c
View File

@ -2607,6 +2607,82 @@ if(s->quarter_sample)
pix_op[s->chroma_x_shift][uvdxy](dest_cr, ptr_cr, uvlinesize, h >> s->chroma_y_shift);
}
}
/* apply one mpeg motion vector to the three components */
static always_inline void mpeg_motion_lowres(MpegEncContext *s,
uint8_t *dest_y, uint8_t *dest_cb, uint8_t *dest_cr,
int field_based, int bottom_field, int field_select,
uint8_t **ref_picture, h264_chroma_mc_func *pix_op,
int motion_x, int motion_y, int h)
{
uint8_t *ptr_y, *ptr_cb, *ptr_cr;
int mx, my, src_x, src_y, uvsrc_x, uvsrc_y, uvlinesize, linesize, sx, sy, uvsx, uvsy;
const int lowres= s->avctx->lowres;
const int block_s= 8>>lowres;
const int s_mask= (2<<lowres)-1;
const int h_edge_pos = s->h_edge_pos >> lowres;
const int v_edge_pos = s->v_edge_pos >> lowres;
linesize = s->current_picture.linesize[0] << field_based;
uvlinesize = s->current_picture.linesize[1] << field_based;
sx= motion_x & s_mask;
sy= motion_y & s_mask;
src_x = s->mb_x*2*block_s + (motion_x >> (lowres+1));
src_y = s->mb_y*2*block_s + (motion_y >> (lowres+1));
if (s->out_format == FMT_H263) {
uvsx = sx | ((motion_x & 2)>>1);
uvsy = sy | ((motion_y & 2)>>1);
uvsrc_x = src_x>>1;
uvsrc_y = src_y>>1;
}else if(s->out_format == FMT_H261){//even chroma mv's are full pel in H261
mx = motion_x / 4;
my = motion_y / 4;
uvsx = (2*mx) & s_mask;
uvsy = (2*my) & s_mask;
uvsrc_x = s->mb_x*block_s + (mx >> lowres);
uvsrc_y = s->mb_y*block_s + (my >> lowres);
} else {
mx = motion_x / 2;
my = motion_y / 2;
uvsx = mx & s_mask;
uvsy = my & s_mask;
uvsrc_x = s->mb_x*block_s + (mx >> (lowres+1));
uvsrc_y = s->mb_y*block_s + (my >> (lowres+1));
}
ptr_y = ref_picture[0] + src_y * linesize + src_x;
ptr_cb = ref_picture[1] + uvsrc_y * uvlinesize + uvsrc_x;
ptr_cr = ref_picture[2] + uvsrc_y * uvlinesize + uvsrc_x;
if( (unsigned)src_x > h_edge_pos - (!!sx) - 2*block_s
|| (unsigned)src_y >(v_edge_pos >> field_based) - (!!sy) - h){
ff_emulated_edge_mc(s->edge_emu_buffer, ptr_y, s->linesize, 17, 17+field_based,
src_x, src_y<<field_based, h_edge_pos, v_edge_pos);
ptr_y = s->edge_emu_buffer;
if(!(s->flags&CODEC_FLAG_GRAY)){
uint8_t *uvbuf= s->edge_emu_buffer+18*s->linesize;
ff_emulated_edge_mc(uvbuf , ptr_cb, s->uvlinesize, 9, 9+field_based,
uvsrc_x, uvsrc_y<<field_based, h_edge_pos>>1, v_edge_pos>>1);
ff_emulated_edge_mc(uvbuf+16, ptr_cr, s->uvlinesize, 9, 9+field_based,
uvsrc_x, uvsrc_y<<field_based, h_edge_pos>>1, v_edge_pos>>1);
ptr_cb= uvbuf;
ptr_cr= uvbuf+16;
}
}
sx <<= 2 - lowres;
sy <<= 2 - lowres;
pix_op[lowres-1](dest_y, ptr_y, linesize, h, sx, sy);
if(!(s->flags&CODEC_FLAG_GRAY)){
uvsx <<= 2 - lowres;
uvsy <<= 2 - lowres;
pix_op[lowres](dest_cb, ptr_cb, uvlinesize, h >> s->chroma_y_shift, uvsx, uvsy);
pix_op[lowres](dest_cr, ptr_cr, uvlinesize, h >> s->chroma_y_shift, uvsx, uvsy);
}
}
//FIXME move to dsputil, avg variant, 16x16 version
static inline void put_obmc(uint8_t *dst, uint8_t *src[5], int stride){
int x;
@ -3085,6 +3161,28 @@ static inline void MPV_motion(MpegEncContext *s,
}
}
/**
* motion compesation of a single macroblock
* @param s context
* @param dest_y luma destination pointer
* @param dest_cb chroma cb/u destination pointer
* @param dest_cr chroma cr/v destination pointer
* @param dir direction (0->forward, 1->backward)
* @param ref_picture array[3] of pointers to the 3 planes of the reference picture
* @param pic_op halfpel motion compensation function (average or put normally)
* the motion vectors are taken from s->mv and the MV type from s->mv_type
*/
static inline void MPV_motion_lowres(MpegEncContext *s,
uint8_t *dest_y, uint8_t *dest_cb, uint8_t *dest_cr,
int dir, uint8_t **ref_picture,
h264_chroma_mc_func *pix_op)
{
assert(s->mv_type == MV_TYPE_16X16);
mpeg_motion_lowres(s, dest_y, dest_cb, dest_cr,
0, 0, 0,
ref_picture, pix_op,
s->mv[dir][0][0], s->mv[dir][0][1], 16>>s->avctx->lowres);
}
/* put block[] to dest[] */
static inline void put_dct(MpegEncContext *s,
@ -3156,7 +3254,7 @@ void ff_clean_intra_table_entries(MpegEncContext *s)
s->mv : motion vector
s->interlaced_dct : true if interlaced dct used (mpeg2)
*/
void MPV_decode_mb(MpegEncContext *s, DCTELEM block[12][64])
static always_inline void MPV_decode_mb_internal(MpegEncContext *s, DCTELEM block[12][64], int lowres_flag)
{
int mb_x, mb_y;
const int mb_xy = s->mb_y * s->mb_stride + s->mb_x;
@ -3202,7 +3300,8 @@ void MPV_decode_mb(MpegEncContext *s, DCTELEM block[12][64])
qpel_mc_func (*op_qpix)[16];
const int linesize= s->current_picture.linesize[0]; //not s->linesize as this woulnd be wrong for field pics
const int uvlinesize= s->current_picture.linesize[1];
const int readable= s->pict_type != B_TYPE || s->encoding || s->avctx->draw_horiz_band;
const int readable= s->pict_type != B_TYPE || s->encoding || s->avctx->draw_horiz_band || lowres_flag;
const int block_size= lowres_flag ? 8>>s->avctx->lowres : 8;
/* avoid copy if macroblock skipped in last frame too */
/* skip only during decoding as we might trash the buffers during encoding a bit */
@ -3230,10 +3329,10 @@ void MPV_decode_mb(MpegEncContext *s, DCTELEM block[12][64])
*mbskip_ptr = 0; /* not skipped */
}
}
dct_linesize = linesize << s->interlaced_dct;
dct_offset =(s->interlaced_dct)? linesize : linesize*8;
dct_offset =(s->interlaced_dct)? linesize : linesize*block_size;
if(readable){
dest_y= s->dest[0];
dest_cb= s->dest[1];
@ -3243,25 +3342,37 @@ void MPV_decode_mb(MpegEncContext *s, DCTELEM block[12][64])
dest_cb= s->b_scratchpad+16*linesize;
dest_cr= s->b_scratchpad+32*linesize;
}
if (!s->mb_intra) {
/* motion handling */
/* decoding or more than one mb_type (MC was allready done otherwise) */
if(!s->encoding){
if ((!s->no_rounding) || s->pict_type==B_TYPE){
op_pix = s->dsp.put_pixels_tab;
op_qpix= s->dsp.put_qpel_pixels_tab;
}else{
op_pix = s->dsp.put_no_rnd_pixels_tab;
op_qpix= s->dsp.put_no_rnd_qpel_pixels_tab;
}
if(lowres_flag){
h264_chroma_mc_func *op_pix = s->dsp.put_h264_chroma_pixels_tab;
if (s->mv_dir & MV_DIR_FORWARD) {
MPV_motion(s, dest_y, dest_cb, dest_cr, 0, s->last_picture.data, op_pix, op_qpix);
op_pix = s->dsp.avg_pixels_tab;
op_qpix= s->dsp.avg_qpel_pixels_tab;
}
if (s->mv_dir & MV_DIR_BACKWARD) {
MPV_motion(s, dest_y, dest_cb, dest_cr, 1, s->next_picture.data, op_pix, op_qpix);
if (s->mv_dir & MV_DIR_FORWARD) {
MPV_motion_lowres(s, dest_y, dest_cb, dest_cr, 0, s->last_picture.data, op_pix);
op_pix = s->dsp.avg_h264_chroma_pixels_tab;
}
if (s->mv_dir & MV_DIR_BACKWARD) {
MPV_motion_lowres(s, dest_y, dest_cb, dest_cr, 1, s->next_picture.data, op_pix);
}
}else{
if ((!s->no_rounding) || s->pict_type==B_TYPE){
op_pix = s->dsp.put_pixels_tab;
op_qpix= s->dsp.put_qpel_pixels_tab;
}else{
op_pix = s->dsp.put_no_rnd_pixels_tab;
op_qpix= s->dsp.put_no_rnd_qpel_pixels_tab;
}
if (s->mv_dir & MV_DIR_FORWARD) {
MPV_motion(s, dest_y, dest_cb, dest_cr, 0, s->last_picture.data, op_pix, op_qpix);
op_pix = s->dsp.avg_pixels_tab;
op_qpix= s->dsp.avg_qpel_pixels_tab;
}
if (s->mv_dir & MV_DIR_BACKWARD) {
MPV_motion(s, dest_y, dest_cb, dest_cr, 1, s->next_picture.data, op_pix, op_qpix);
}
}
}
@ -3271,20 +3382,20 @@ void MPV_decode_mb(MpegEncContext *s, DCTELEM block[12][64])
/* add dct residue */
if(s->encoding || !( s->h263_msmpeg4 || s->codec_id==CODEC_ID_MPEG1VIDEO || s->codec_id==CODEC_ID_MPEG2VIDEO
|| (s->codec_id==CODEC_ID_MPEG4 && !s->mpeg_quant))){
add_dequant_dct(s, block[0], 0, dest_y, dct_linesize, s->qscale);
add_dequant_dct(s, block[1], 1, dest_y + 8, dct_linesize, s->qscale);
add_dequant_dct(s, block[2], 2, dest_y + dct_offset, dct_linesize, s->qscale);
add_dequant_dct(s, block[3], 3, dest_y + dct_offset + 8, dct_linesize, s->qscale);
add_dequant_dct(s, block[0], 0, dest_y , dct_linesize, s->qscale);
add_dequant_dct(s, block[1], 1, dest_y + block_size, dct_linesize, s->qscale);
add_dequant_dct(s, block[2], 2, dest_y + dct_offset , dct_linesize, s->qscale);
add_dequant_dct(s, block[3], 3, dest_y + dct_offset + block_size, dct_linesize, s->qscale);
if(!(s->flags&CODEC_FLAG_GRAY)){
add_dequant_dct(s, block[4], 4, dest_cb, uvlinesize, s->chroma_qscale);
add_dequant_dct(s, block[5], 5, dest_cr, uvlinesize, s->chroma_qscale);
}
} else if(s->codec_id != CODEC_ID_WMV2){
add_dct(s, block[0], 0, dest_y, dct_linesize);
add_dct(s, block[1], 1, dest_y + 8, dct_linesize);
add_dct(s, block[2], 2, dest_y + dct_offset, dct_linesize);
add_dct(s, block[3], 3, dest_y + dct_offset + 8, dct_linesize);
add_dct(s, block[0], 0, dest_y , dct_linesize);
add_dct(s, block[1], 1, dest_y + block_size, dct_linesize);
add_dct(s, block[2], 2, dest_y + dct_offset , dct_linesize);
add_dct(s, block[3], 3, dest_y + dct_offset + block_size, dct_linesize);
if(!(s->flags&CODEC_FLAG_GRAY)){
if(s->chroma_y_shift){//Chroma420
@ -3316,20 +3427,20 @@ void MPV_decode_mb(MpegEncContext *s, DCTELEM block[12][64])
} else {
/* dct only in intra block */
if(s->encoding || !(s->codec_id==CODEC_ID_MPEG1VIDEO || s->codec_id==CODEC_ID_MPEG2VIDEO)){
put_dct(s, block[0], 0, dest_y, dct_linesize, s->qscale);
put_dct(s, block[1], 1, dest_y + 8, dct_linesize, s->qscale);
put_dct(s, block[2], 2, dest_y + dct_offset, dct_linesize, s->qscale);
put_dct(s, block[3], 3, dest_y + dct_offset + 8, dct_linesize, s->qscale);
put_dct(s, block[0], 0, dest_y , dct_linesize, s->qscale);
put_dct(s, block[1], 1, dest_y + block_size, dct_linesize, s->qscale);
put_dct(s, block[2], 2, dest_y + dct_offset , dct_linesize, s->qscale);
put_dct(s, block[3], 3, dest_y + dct_offset + block_size, dct_linesize, s->qscale);
if(!(s->flags&CODEC_FLAG_GRAY)){
put_dct(s, block[4], 4, dest_cb, uvlinesize, s->chroma_qscale);
put_dct(s, block[5], 5, dest_cr, uvlinesize, s->chroma_qscale);
}
}else{
s->dsp.idct_put(dest_y , dct_linesize, block[0]);
s->dsp.idct_put(dest_y + 8, dct_linesize, block[1]);
s->dsp.idct_put(dest_y + dct_offset , dct_linesize, block[2]);
s->dsp.idct_put(dest_y + dct_offset + 8, dct_linesize, block[3]);
s->dsp.idct_put(dest_y , dct_linesize, block[0]);
s->dsp.idct_put(dest_y + block_size, dct_linesize, block[1]);
s->dsp.idct_put(dest_y + dct_offset , dct_linesize, block[2]);
s->dsp.idct_put(dest_y + dct_offset + block_size, dct_linesize, block[3]);
if(!(s->flags&CODEC_FLAG_GRAY)){
if(s->chroma_y_shift){
@ -3362,6 +3473,11 @@ void MPV_decode_mb(MpegEncContext *s, DCTELEM block[12][64])
}
}
void MPV_decode_mb(MpegEncContext *s, DCTELEM block[12][64]){
if(s->avctx->lowres) MPV_decode_mb_internal(s, block, 1);
else MPV_decode_mb_internal(s, block, 0);
}
#ifdef CONFIG_ENCODERS
static inline void dct_single_coeff_elimination(MpegEncContext *s, int n, int threshold)
@ -3492,6 +3608,7 @@ void ff_draw_horiz_band(MpegEncContext *s, int y, int h){
void ff_init_block_index(MpegEncContext *s){ //FIXME maybe rename
const int linesize= s->current_picture.linesize[0]; //not s->linesize as this woulnd be wrong for field pics
const int uvlinesize= s->current_picture.linesize[1];
const int mb_size= 4 - s->avctx->lowres;
s->block_index[0]= s->b8_stride*(s->mb_y*2 ) - 2 + s->mb_x*2;
s->block_index[1]= s->b8_stride*(s->mb_y*2 ) - 1 + s->mb_x*2;
@ -3501,15 +3618,15 @@ void ff_init_block_index(MpegEncContext *s){ //FIXME maybe rename
s->block_index[5]= s->mb_stride*(s->mb_y + s->mb_height + 2) + s->b8_stride*s->mb_height*2 + s->mb_x - 1;
//block_index is not used by mpeg2, so it is not affected by chroma_format
s->dest[0] = s->current_picture.data[0] + ((s->mb_x - 1) << 4);
s->dest[1] = s->current_picture.data[1] + ((s->mb_x - 1) << (4 - s->chroma_x_shift));
s->dest[2] = s->current_picture.data[2] + ((s->mb_x - 1) << (4 - s->chroma_x_shift));
s->dest[0] = s->current_picture.data[0] + ((s->mb_x - 1) << mb_size);
s->dest[1] = s->current_picture.data[1] + ((s->mb_x - 1) << (mb_size - s->chroma_x_shift));
s->dest[2] = s->current_picture.data[2] + ((s->mb_x - 1) << (mb_size - s->chroma_x_shift));
if(!(s->pict_type==B_TYPE && s->avctx->draw_horiz_band && s->picture_structure==PICT_FRAME))
{
s->dest[0] += s->mb_y * linesize << 4;
s->dest[1] += s->mb_y * uvlinesize << (4 - s->chroma_y_shift);
s->dest[2] += s->mb_y * uvlinesize << (4 - s->chroma_y_shift);
s->dest[0] += s->mb_y * linesize << mb_size;
s->dest[1] += s->mb_y * uvlinesize << (mb_size - s->chroma_y_shift);
s->dest[2] += s->mb_y * uvlinesize << (mb_size - s->chroma_y_shift);
}
}

8
libavcodec/mpegvideo.h
View File

@ -773,15 +773,17 @@ extern enum PixelFormat ff_yuv420p_list[2];
void ff_init_block_index(MpegEncContext *s);
static inline void ff_update_block_index(MpegEncContext *s){
const int block_size= 8>>s->avctx->lowres;
s->block_index[0]+=2;
s->block_index[1]+=2;
s->block_index[2]+=2;
s->block_index[3]+=2;
s->block_index[4]++;
s->block_index[5]++;
s->dest[0]+= 16;
s->dest[1]+= 8;
s->dest[2]+= 8;
s->dest[0]+= 2*block_size;
s->dest[1]+= block_size;
s->dest[2]+= block_size;
}
static inline int get_bits_diff(MpegEncContext *s){