#include "mpegvideo.h"
#include "mjpegenc.h"
#include "msmpeg4.h"
-#include "xvmc_internal.h"
#include "thread.h"
#include <limits.h>
-static void dct_unquantize_mpeg1_intra_c(MpegEncContext *s,
- int16_t *block, int n, int qscale);
-static void dct_unquantize_mpeg1_inter_c(MpegEncContext *s,
- int16_t *block, int n, int qscale);
-static void dct_unquantize_mpeg2_intra_c(MpegEncContext *s,
- int16_t *block, int n, int qscale);
-static void dct_unquantize_mpeg2_intra_bitexact(MpegEncContext *s,
- int16_t *block, int n, int qscale);
-static void dct_unquantize_mpeg2_inter_c(MpegEncContext *s,
- int16_t *block, int n, int qscale);
-static void dct_unquantize_h263_intra_c(MpegEncContext *s,
- int16_t *block, int n, int qscale);
-static void dct_unquantize_h263_inter_c(MpegEncContext *s,
- int16_t *block, int n, int qscale);
-
static const uint8_t ff_default_chroma_qscale_table[32] = {
// 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15,
AV_PIX_FMT_NONE
};
+static void dct_unquantize_mpeg1_intra_c(MpegEncContext *s,
+ int16_t *block, int n, int qscale)
+{
+ int i, level, nCoeffs;
+ const uint16_t *quant_matrix;
+
+ nCoeffs= s->block_last_index[n];
+
+ block[0] *= n < 4 ? s->y_dc_scale : s->c_dc_scale;
+ /* XXX: only mpeg1 */
+ quant_matrix = s->intra_matrix;
+ for(i=1;i<=nCoeffs;i++) {
+ int j= s->intra_scantable.permutated[i];
+ level = block[j];
+ if (level) {
+ if (level < 0) {
+ level = -level;
+ level = (int)(level * qscale * quant_matrix[j]) >> 3;
+ level = (level - 1) | 1;
+ level = -level;
+ } else {
+ level = (int)(level * qscale * quant_matrix[j]) >> 3;
+ level = (level - 1) | 1;
+ }
+ block[j] = level;
+ }
+ }
+}
+
+static void dct_unquantize_mpeg1_inter_c(MpegEncContext *s,
+ int16_t *block, int n, int qscale)
+{
+ int i, level, nCoeffs;
+ const uint16_t *quant_matrix;
+
+ nCoeffs= s->block_last_index[n];
+
+ quant_matrix = s->inter_matrix;
+ for(i=0; i<=nCoeffs; i++) {
+ int j= s->intra_scantable.permutated[i];
+ level = block[j];
+ if (level) {
+ if (level < 0) {
+ level = -level;
+ level = (((level << 1) + 1) * qscale *
+ ((int) (quant_matrix[j]))) >> 4;
+ level = (level - 1) | 1;
+ level = -level;
+ } else {
+ level = (((level << 1) + 1) * qscale *
+ ((int) (quant_matrix[j]))) >> 4;
+ level = (level - 1) | 1;
+ }
+ block[j] = level;
+ }
+ }
+}
+
+static void dct_unquantize_mpeg2_intra_c(MpegEncContext *s,
+ int16_t *block, int n, int qscale)
+{
+ int i, level, nCoeffs;
+ const uint16_t *quant_matrix;
+
+ if(s->alternate_scan) nCoeffs= 63;
+ else nCoeffs= s->block_last_index[n];
+
+ block[0] *= n < 4 ? s->y_dc_scale : s->c_dc_scale;
+ quant_matrix = s->intra_matrix;
+ for(i=1;i<=nCoeffs;i++) {
+ int j= s->intra_scantable.permutated[i];
+ level = block[j];
+ if (level) {
+ if (level < 0) {
+ level = -level;
+ level = (int)(level * qscale * quant_matrix[j]) >> 3;
+ level = -level;
+ } else {
+ level = (int)(level * qscale * quant_matrix[j]) >> 3;
+ }
+ block[j] = level;
+ }
+ }
+}
+
+static void dct_unquantize_mpeg2_intra_bitexact(MpegEncContext *s,
+ int16_t *block, int n, int qscale)
+{
+ int i, level, nCoeffs;
+ const uint16_t *quant_matrix;
+ int sum=-1;
+
+ if(s->alternate_scan) nCoeffs= 63;
+ else nCoeffs= s->block_last_index[n];
+
+ block[0] *= n < 4 ? s->y_dc_scale : s->c_dc_scale;
+ sum += block[0];
+ quant_matrix = s->intra_matrix;
+ for(i=1;i<=nCoeffs;i++) {
+ int j= s->intra_scantable.permutated[i];
+ level = block[j];
+ if (level) {
+ if (level < 0) {
+ level = -level;
+ level = (int)(level * qscale * quant_matrix[j]) >> 3;
+ level = -level;
+ } else {
+ level = (int)(level * qscale * quant_matrix[j]) >> 3;
+ }
+ block[j] = level;
+ sum+=level;
+ }
+ }
+ block[63]^=sum&1;
+}
+
+static void dct_unquantize_mpeg2_inter_c(MpegEncContext *s,
+ int16_t *block, int n, int qscale)
+{
+ int i, level, nCoeffs;
+ const uint16_t *quant_matrix;
+ int sum=-1;
+
+ if(s->alternate_scan) nCoeffs= 63;
+ else nCoeffs= s->block_last_index[n];
+
+ quant_matrix = s->inter_matrix;
+ for(i=0; i<=nCoeffs; i++) {
+ int j= s->intra_scantable.permutated[i];
+ level = block[j];
+ if (level) {
+ if (level < 0) {
+ level = -level;
+ level = (((level << 1) + 1) * qscale *
+ ((int) (quant_matrix[j]))) >> 4;
+ level = -level;
+ } else {
+ level = (((level << 1) + 1) * qscale *
+ ((int) (quant_matrix[j]))) >> 4;
+ }
+ block[j] = level;
+ sum+=level;
+ }
+ }
+ block[63]^=sum&1;
+}
+
+static void dct_unquantize_h263_intra_c(MpegEncContext *s,
+ int16_t *block, int n, int qscale)
+{
+ int i, level, qmul, qadd;
+ int nCoeffs;
+
+ av_assert2(s->block_last_index[n]>=0 || s->h263_aic);
+
+ qmul = qscale << 1;
+
+ if (!s->h263_aic) {
+ block[0] *= n < 4 ? s->y_dc_scale : s->c_dc_scale;
+ qadd = (qscale - 1) | 1;
+ }else{
+ qadd = 0;
+ }
+ if(s->ac_pred)
+ nCoeffs=63;
+ else
+ nCoeffs= s->inter_scantable.raster_end[ s->block_last_index[n] ];
+
+ for(i=1; i<=nCoeffs; i++) {
+ level = block[i];
+ if (level) {
+ if (level < 0) {
+ level = level * qmul - qadd;
+ } else {
+ level = level * qmul + qadd;
+ }
+ block[i] = level;
+ }
+ }
+}
+
+static void dct_unquantize_h263_inter_c(MpegEncContext *s,
+ int16_t *block, int n, int qscale)
+{
+ int i, level, qmul, qadd;
+ int nCoeffs;
+
+ av_assert2(s->block_last_index[n]>=0);
+
+ qadd = (qscale - 1) | 1;
+ qmul = qscale << 1;
+
+ nCoeffs= s->inter_scantable.raster_end[ s->block_last_index[n] ];
+
+ for(i=0; i<=nCoeffs; i++) {
+ level = block[i];
+ if (level) {
+ if (level < 0) {
+ level = level * qmul - qadd;
+ } else {
+ level = level * qmul + qadd;
+ }
+ block[i] = level;
+ }
+ }
+}
+
static void mpeg_er_decode_mb(void *opaque, int ref, int mv_dir, int mv_type,
int (*mv)[2][4][2],
int mb_x, int mb_y, int mb_intra, int mb_skipped)
ff_MPV_common_init_axp(s);
if (ARCH_ARM)
ff_MPV_common_init_arm(s);
- if (ARCH_BFIN)
- ff_MPV_common_init_bfin(s);
if (ARCH_PPC)
ff_MPV_common_init_ppc(s);
if (ARCH_X86)
int yc_size = y_size + 2 * c_size;
int i;
+ if (s->mb_height & 1)
+ yc_size += 2*s->b8_stride + 2*s->mb_stride;
+
s->edge_emu_buffer =
s->me.scratchpad =
s->me.temp =
c_size = s->mb_stride * (s->mb_height + 1);
yc_size = y_size + 2 * c_size;
+ if (s->mb_height & 1)
+ yc_size += 2*s->b8_stride + 2*s->mb_stride;
+
FF_ALLOCZ_OR_GOTO(s->avctx, s->mb_index2xy, (s->mb_num + 1) * sizeof(int), fail); // error ressilience code looks cleaner with this
for (y = 0; y < s->mb_height; y++)
for (x = 0; x < s->mb_width; x++)
}
if (s->out_format == FMT_H263) {
/* cbp values */
- FF_ALLOCZ_OR_GOTO(s->avctx, s->coded_block_base, y_size, fail);
+ FF_ALLOCZ_OR_GOTO(s->avctx, s->coded_block_base, y_size + (s->mb_height&1)*2*s->b8_stride, fail);
s->coded_block = s->coded_block_base + s->b8_stride + 1;
/* cbp, ac_pred, pred_dir */
FF_ALLOCZ_OR_GOTO(s->avctx, s->picture,
MAX_PICTURE_COUNT * sizeof(Picture), fail);
for (i = 0; i < MAX_PICTURE_COUNT; i++) {
- avcodec_get_frame_defaults(&s->picture[i].f);
+ av_frame_unref(&s->picture[i].f);
}
memset(&s->next_picture, 0, sizeof(s->next_picture));
memset(&s->last_picture, 0, sizeof(s->last_picture));
memset(&s->current_picture, 0, sizeof(s->current_picture));
- avcodec_get_frame_defaults(&s->next_picture.f);
- avcodec_get_frame_defaults(&s->last_picture.f);
- avcodec_get_frame_defaults(&s->current_picture.f);
+ av_frame_unref(&s->next_picture.f);
+ av_frame_unref(&s->last_picture.f);
+ av_frame_unref(&s->current_picture.f);
if (init_context_frame(s))
goto fail;
return ret;
}
-static void update_noise_reduction(MpegEncContext *s)
-{
- int intra, i;
-
- for (intra = 0; intra < 2; intra++) {
- if (s->dct_count[intra] > (1 << 16)) {
- for (i = 0; i < 64; i++) {
- s->dct_error_sum[intra][i] >>= 1;
- }
- s->dct_count[intra] >>= 1;
- }
-
- for (i = 0; i < 64; i++) {
- s->dct_offset[intra][i] = (s->avctx->noise_reduction *
- s->dct_count[intra] +
- s->dct_error_sum[intra][i] / 2) /
- (s->dct_error_sum[intra][i] + 1);
- }
- }
-}
-
/**
- * generic function for encode/decode called after coding/decoding
- * the header and before a frame is coded/decoded.
+ * generic function called after decoding
+ * the header and before a frame is decoded.
*/
int ff_MPV_frame_start(MpegEncContext *s, AVCodecContext *avctx)
{
/* release forgotten pictures */
/* if (mpeg124/h263) */
- if (!s->encoding) {
- for (i = 0; i < MAX_PICTURE_COUNT; i++) {
- if (&s->picture[i] != s->last_picture_ptr &&
- &s->picture[i] != s->next_picture_ptr &&
- s->picture[i].reference && !s->picture[i].needs_realloc) {
- if (!(avctx->active_thread_type & FF_THREAD_FRAME))
- av_log(avctx, AV_LOG_ERROR,
- "releasing zombie picture\n");
- ff_mpeg_unref_picture(s, &s->picture[i]);
- }
+ for (i = 0; i < MAX_PICTURE_COUNT; i++) {
+ if (&s->picture[i] != s->last_picture_ptr &&
+ &s->picture[i] != s->next_picture_ptr &&
+ s->picture[i].reference && !s->picture[i].needs_realloc) {
+ if (!(avctx->active_thread_type & FF_THREAD_FRAME))
+ av_log(avctx, AV_LOG_ERROR,
+ "releasing zombie picture\n");
+ ff_mpeg_unref_picture(s, &s->picture[i]);
}
}
ff_mpeg_unref_picture(s, &s->current_picture);
- if (!s->encoding) {
- release_unused_pictures(s);
+ release_unused_pictures(s);
- if (s->current_picture_ptr &&
- s->current_picture_ptr->f.buf[0] == NULL) {
- // we already have a unused image
- // (maybe it was set before reading the header)
- pic = s->current_picture_ptr;
- } else {
- i = ff_find_unused_picture(s, 0);
- if (i < 0) {
- av_log(s->avctx, AV_LOG_ERROR, "no frame buffer available\n");
- return i;
- }
- pic = &s->picture[i];
+ if (s->current_picture_ptr &&
+ s->current_picture_ptr->f.buf[0] == NULL) {
+ // we already have a unused image
+ // (maybe it was set before reading the header)
+ pic = s->current_picture_ptr;
+ } else {
+ i = ff_find_unused_picture(s, 0);
+ if (i < 0) {
+ av_log(s->avctx, AV_LOG_ERROR, "no frame buffer available\n");
+ return i;
}
+ pic = &s->picture[i];
+ }
- pic->reference = 0;
- if (!s->droppable) {
- if (s->pict_type != AV_PICTURE_TYPE_B)
- pic->reference = 3;
- }
+ pic->reference = 0;
+ if (!s->droppable) {
+ if (s->pict_type != AV_PICTURE_TYPE_B)
+ pic->reference = 3;
+ }
- pic->f.coded_picture_number = s->coded_picture_number++;
+ pic->f.coded_picture_number = s->coded_picture_number++;
- if (ff_alloc_picture(s, pic, 0) < 0)
- return -1;
+ if (ff_alloc_picture(s, pic, 0) < 0)
+ return -1;
- s->current_picture_ptr = pic;
- // FIXME use only the vars from current_pic
- s->current_picture_ptr->f.top_field_first = s->top_field_first;
- if (s->codec_id == AV_CODEC_ID_MPEG1VIDEO ||
- s->codec_id == AV_CODEC_ID_MPEG2VIDEO) {
- if (s->picture_structure != PICT_FRAME)
- s->current_picture_ptr->f.top_field_first =
- (s->picture_structure == PICT_TOP_FIELD) == s->first_field;
- }
- s->current_picture_ptr->f.interlaced_frame = !s->progressive_frame &&
- !s->progressive_sequence;
- s->current_picture_ptr->field_picture = s->picture_structure != PICT_FRAME;
+ s->current_picture_ptr = pic;
+ // FIXME use only the vars from current_pic
+ s->current_picture_ptr->f.top_field_first = s->top_field_first;
+ if (s->codec_id == AV_CODEC_ID_MPEG1VIDEO ||
+ s->codec_id == AV_CODEC_ID_MPEG2VIDEO) {
+ if (s->picture_structure != PICT_FRAME)
+ s->current_picture_ptr->f.top_field_first =
+ (s->picture_structure == PICT_TOP_FIELD) == s->first_field;
}
+ s->current_picture_ptr->f.interlaced_frame = !s->progressive_frame &&
+ !s->progressive_sequence;
+ s->current_picture_ptr->field_picture = s->picture_structure != PICT_FRAME;
s->current_picture_ptr->f.pict_type = s->pict_type;
// if (s->flags && CODEC_FLAG_QSCALE)
return i;
}
s->last_picture_ptr = &s->picture[i];
+
+ s->last_picture_ptr->reference = 3;
s->last_picture_ptr->f.key_frame = 0;
+ s->last_picture_ptr->f.pict_type = AV_PICTURE_TYPE_P;
+
if (ff_alloc_picture(s, s->last_picture_ptr, 0) < 0) {
s->last_picture_ptr = NULL;
return -1;
return i;
}
s->next_picture_ptr = &s->picture[i];
+
+ s->next_picture_ptr->reference = 3;
s->next_picture_ptr->f.key_frame = 0;
+ s->next_picture_ptr->f.pict_type = AV_PICTURE_TYPE_P;
+
if (ff_alloc_picture(s, s->next_picture_ptr, 0) < 0) {
s->next_picture_ptr = NULL;
return -1;
s->dct_unquantize_inter = s->dct_unquantize_mpeg1_inter;
}
- if (s->dct_error_sum) {
- av_assert2(s->avctx->noise_reduction && s->encoding);
- update_noise_reduction(s);
- }
-
-#if FF_API_XVMC
-FF_DISABLE_DEPRECATION_WARNINGS
- if (CONFIG_MPEG_XVMC_DECODER && s->avctx->xvmc_acceleration)
- return ff_xvmc_field_start(s, avctx);
-FF_ENABLE_DEPRECATION_WARNINGS
-#endif /* FF_API_XVMC */
-
return 0;
}
/* called after a frame has been decoded. */
void ff_MPV_frame_end(MpegEncContext *s)
{
-#if FF_API_XVMC
-FF_DISABLE_DEPRECATION_WARNINGS
- /* redraw edges for the frame if decoding didn't complete */
- // just to make sure that all data is rendered.
- if (CONFIG_MPEG_XVMC_DECODER && s->avctx->xvmc_acceleration) {
- ff_xvmc_field_end(s);
- } else
-FF_ENABLE_DEPRECATION_WARNINGS
-#endif /* FF_API_XVMC */
if ((s->er.error_count || !(s->avctx->codec->capabilities&CODEC_CAP_DRAW_HORIZ_BAND)) &&
!s->avctx->hwaccel &&
!(s->avctx->codec->capabilities & CODEC_CAP_HWACCEL_VDPAU) &&
{
const int mb_xy = s->mb_y * s->mb_stride + s->mb_x;
-#if FF_API_XVMC
-FF_DISABLE_DEPRECATION_WARNINGS
- if(CONFIG_MPEG_XVMC_DECODER && s->avctx->xvmc_acceleration){
- ff_xvmc_decode_mb(s);//xvmc uses pblocks
+ if (CONFIG_XVMC &&
+ s->avctx->hwaccel && s->avctx->hwaccel->decode_mb) {
+ s->avctx->hwaccel->decode_mb(s);//xvmc uses pblocks
return;
}
-FF_ENABLE_DEPRECATION_WARNINGS
-#endif /* FF_API_XVMC */
if(s->avctx->debug&FF_DEBUG_DCT_COEFF) {
/* print DCT coefficients */
else if (!is_mpeg12 && (s->h263_pred || s->h263_aic))
s->mbintra_table[mb_xy]=1;
- if ((s->flags&CODEC_FLAG_PSNR) || !(s->encoding && (s->intra_only || s->pict_type==AV_PICTURE_TYPE_B) && s->avctx->mb_decision != FF_MB_DECISION_RD)) { //FIXME precalc
+ if ( (s->flags&CODEC_FLAG_PSNR)
+ || s->avctx->frame_skip_threshold || s->avctx->frame_skip_factor
+ || !(s->encoding && (s->intra_only || s->pict_type==AV_PICTURE_TYPE_B) && s->avctx->mb_decision != FF_MB_DECISION_RD)) { //FIXME precalc
uint8_t *dest_y, *dest_cb, *dest_cr;
int dct_linesize, dct_offset;
op_pixels_func (*op_pix)[4];
s->pp_time=0;
}
-static void dct_unquantize_mpeg1_intra_c(MpegEncContext *s,
- int16_t *block, int n, int qscale)
-{
- int i, level, nCoeffs;
- const uint16_t *quant_matrix;
-
- nCoeffs= s->block_last_index[n];
-
- block[0] *= n < 4 ? s->y_dc_scale : s->c_dc_scale;
- /* XXX: only mpeg1 */
- quant_matrix = s->intra_matrix;
- for(i=1;i<=nCoeffs;i++) {
- int j= s->intra_scantable.permutated[i];
- level = block[j];
- if (level) {
- if (level < 0) {
- level = -level;
- level = (int)(level * qscale * quant_matrix[j]) >> 3;
- level = (level - 1) | 1;
- level = -level;
- } else {
- level = (int)(level * qscale * quant_matrix[j]) >> 3;
- level = (level - 1) | 1;
- }
- block[j] = level;
- }
- }
-}
-
-static void dct_unquantize_mpeg1_inter_c(MpegEncContext *s,
- int16_t *block, int n, int qscale)
-{
- int i, level, nCoeffs;
- const uint16_t *quant_matrix;
-
- nCoeffs= s->block_last_index[n];
-
- quant_matrix = s->inter_matrix;
- for(i=0; i<=nCoeffs; i++) {
- int j= s->intra_scantable.permutated[i];
- level = block[j];
- if (level) {
- if (level < 0) {
- level = -level;
- level = (((level << 1) + 1) * qscale *
- ((int) (quant_matrix[j]))) >> 4;
- level = (level - 1) | 1;
- level = -level;
- } else {
- level = (((level << 1) + 1) * qscale *
- ((int) (quant_matrix[j]))) >> 4;
- level = (level - 1) | 1;
- }
- block[j] = level;
- }
- }
-}
-
-static void dct_unquantize_mpeg2_intra_c(MpegEncContext *s,
- int16_t *block, int n, int qscale)
-{
- int i, level, nCoeffs;
- const uint16_t *quant_matrix;
-
- if(s->alternate_scan) nCoeffs= 63;
- else nCoeffs= s->block_last_index[n];
-
- block[0] *= n < 4 ? s->y_dc_scale : s->c_dc_scale;
- quant_matrix = s->intra_matrix;
- for(i=1;i<=nCoeffs;i++) {
- int j= s->intra_scantable.permutated[i];
- level = block[j];
- if (level) {
- if (level < 0) {
- level = -level;
- level = (int)(level * qscale * quant_matrix[j]) >> 3;
- level = -level;
- } else {
- level = (int)(level * qscale * quant_matrix[j]) >> 3;
- }
- block[j] = level;
- }
- }
-}
-
-static void dct_unquantize_mpeg2_intra_bitexact(MpegEncContext *s,
- int16_t *block, int n, int qscale)
-{
- int i, level, nCoeffs;
- const uint16_t *quant_matrix;
- int sum=-1;
-
- if(s->alternate_scan) nCoeffs= 63;
- else nCoeffs= s->block_last_index[n];
-
- block[0] *= n < 4 ? s->y_dc_scale : s->c_dc_scale;
- sum += block[0];
- quant_matrix = s->intra_matrix;
- for(i=1;i<=nCoeffs;i++) {
- int j= s->intra_scantable.permutated[i];
- level = block[j];
- if (level) {
- if (level < 0) {
- level = -level;
- level = (int)(level * qscale * quant_matrix[j]) >> 3;
- level = -level;
- } else {
- level = (int)(level * qscale * quant_matrix[j]) >> 3;
- }
- block[j] = level;
- sum+=level;
- }
- }
- block[63]^=sum&1;
-}
-
-static void dct_unquantize_mpeg2_inter_c(MpegEncContext *s,
- int16_t *block, int n, int qscale)
-{
- int i, level, nCoeffs;
- const uint16_t *quant_matrix;
- int sum=-1;
-
- if(s->alternate_scan) nCoeffs= 63;
- else nCoeffs= s->block_last_index[n];
-
- quant_matrix = s->inter_matrix;
- for(i=0; i<=nCoeffs; i++) {
- int j= s->intra_scantable.permutated[i];
- level = block[j];
- if (level) {
- if (level < 0) {
- level = -level;
- level = (((level << 1) + 1) * qscale *
- ((int) (quant_matrix[j]))) >> 4;
- level = -level;
- } else {
- level = (((level << 1) + 1) * qscale *
- ((int) (quant_matrix[j]))) >> 4;
- }
- block[j] = level;
- sum+=level;
- }
- }
- block[63]^=sum&1;
-}
-
-static void dct_unquantize_h263_intra_c(MpegEncContext *s,
- int16_t *block, int n, int qscale)
-{
- int i, level, qmul, qadd;
- int nCoeffs;
-
- av_assert2(s->block_last_index[n]>=0 || s->h263_aic);
-
- qmul = qscale << 1;
-
- if (!s->h263_aic) {
- block[0] *= n < 4 ? s->y_dc_scale : s->c_dc_scale;
- qadd = (qscale - 1) | 1;
- }else{
- qadd = 0;
- }
- if(s->ac_pred)
- nCoeffs=63;
- else
- nCoeffs= s->inter_scantable.raster_end[ s->block_last_index[n] ];
-
- for(i=1; i<=nCoeffs; i++) {
- level = block[i];
- if (level) {
- if (level < 0) {
- level = level * qmul - qadd;
- } else {
- level = level * qmul + qadd;
- }
- block[i] = level;
- }
- }
-}
-
-static void dct_unquantize_h263_inter_c(MpegEncContext *s,
- int16_t *block, int n, int qscale)
-{
- int i, level, qmul, qadd;
- int nCoeffs;
-
- av_assert2(s->block_last_index[n]>=0);
-
- qadd = (qscale - 1) | 1;
- qmul = qscale << 1;
-
- nCoeffs= s->inter_scantable.raster_end[ s->block_last_index[n] ];
-
- for(i=0; i<=nCoeffs; i++) {
- level = block[i];
- if (level) {
- if (level < 0) {
- level = level * qmul - qadd;
- } else {
- level = level * qmul + qadd;
- }
- block[i] = level;
- }
- }
-}
-
/**
* set qscale and update qscale dependent variables.
*/
projects / ffmpeg / blobdiff