mirror of https://git.ffmpeg.org/ffmpeg.git
avfilter/vf_framerate: change blend factor precision
This is done mainly in preparation for the SIMD patches. - for the 8-bit input, decrease the blend factor precision to 7-bit. - for the 16-bit input, increase the blend factor precision to 15-bit. - make sure the blend functions are not called with 0 or maximum blending factors, because we don't want the signed factor integers to overflow. Fate test changes are due to different rounding. Signed-off-by: Marton Balint <cus@passwd.hu>
This commit is contained in:
Marton Balint
parent
1b6ffe9aca
commit
2cbe6bac03
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@ -43,7 +43,10 @@
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const uint8_t *src2, ptrdiff_t src2_linesize, \
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uint8_t *dst, ptrdiff_t dst_linesize, \
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ptrdiff_t width, ptrdiff_t height, \
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int factor1, int factor2, int half, int shift
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int factor1, int factor2, int half
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#define BLEND_FACTOR_DEPTH8 7
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#define BLEND_FACTOR_DEPTH16 15
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typedef void (*blend_func)(BLEND_FUNC_PARAMS);
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@ -53,10 +56,8 @@ typedef struct FrameRateContext {
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AVRational dest_frame_rate; ///< output frames per second
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int flags; ///< flags affecting frame rate conversion algorithm
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double scene_score; ///< score that denotes a scene change has happened
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int interp_start; ///< start of range to apply linear interpolation (same bitdepth as input)
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int interp_end; ///< end of range to apply linear interpolation (same bitdepth as input)
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int interp_start_param; ///< start of range to apply linear interpolation
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int interp_end_param; ///< end of range to apply linear interpolation
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int interp_start; ///< start of range to apply linear interpolation
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int interp_end; ///< end of range to apply linear interpolation
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int line_size[4]; ///< bytes of pixel data per line for each plane
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int vsub;
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@ -67,7 +68,7 @@ typedef struct FrameRateContext {
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av_pixelutils_sad_fn sad; ///< Sum of the absolute difference function (scene detect only)
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double prev_mafd; ///< previous MAFD (scene detect only)
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int max;
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int blend_factor_max;
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int bitdepth;
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AVFrame *work;
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@ -92,8 +93,8 @@ typedef struct FrameRateContext {
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static const AVOption framerate_options[] = {
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{"fps", "required output frames per second rate", OFFSET(dest_frame_rate), AV_OPT_TYPE_VIDEO_RATE, {.str="50"}, 0, INT_MAX, V|F },
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{"interp_start", "point to start linear interpolation", OFFSET(interp_start_param),AV_OPT_TYPE_INT, {.i64=15}, 0, 255, V|F },
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{"interp_end", "point to end linear interpolation", OFFSET(interp_end_param), AV_OPT_TYPE_INT, {.i64=240}, 0, 255, V|F },
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{"interp_start", "point to start linear interpolation", OFFSET(interp_start), AV_OPT_TYPE_INT, {.i64=15}, 0, 255, V|F },
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{"interp_end", "point to end linear interpolation", OFFSET(interp_end), AV_OPT_TYPE_INT, {.i64=240}, 0, 255, V|F },
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{"scene", "scene change level", OFFSET(scene_score), AV_OPT_TYPE_DOUBLE, {.dbl=8.2}, 0, INT_MAX, V|F },
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{"flags", "set flags", OFFSET(flags), AV_OPT_TYPE_FLAGS, {.i64=1}, 0, INT_MAX, V|F, "flags" },
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@ -210,7 +211,7 @@ static int filter_slice(AVFilterContext *ctx, void *arg, int job, int nb_jobs)
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cpy_src2_data, cpy_src2_line_size,
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cpy_dst_data, cpy_dst_line_size,
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cpy_line_width, end - start,
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src1_factor, src2_factor, s->max / 2, s->bitdepth);
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src1_factor, src2_factor, s->blend_factor_max >> 1);
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}
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return 0;
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@ -235,7 +236,7 @@ static int blend_frames(AVFilterContext *ctx, int interpolate)
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td.copy_src1 = s->f0;
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td.copy_src2 = s->f1;
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td.src2_factor = interpolate;
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td.src1_factor = s->max - td.src2_factor;
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td.src1_factor = s->blend_factor_max - td.src2_factor;
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// get work-space for output frame
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s->work = ff_get_video_buffer(outlink, outlink->w, outlink->h);
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@ -255,7 +256,7 @@ static int process_work_frame(AVFilterContext *ctx)
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{
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FrameRateContext *s = ctx->priv;
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int64_t work_pts;
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int interpolate;
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int64_t interpolate, interpolate8;
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int ret;
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if (!s->f1)
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@ -274,18 +275,19 @@ static int process_work_frame(AVFilterContext *ctx)
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if (work_pts >= s->pts1 + s->delta && s->flush)
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return 0;
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interpolate = av_rescale(work_pts - s->pts0, s->max, s->delta);
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ff_dlog(ctx, "process_work_frame() interpolate:%d/%d\n", interpolate, s->max);
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if (interpolate > s->interp_end) {
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interpolate = av_rescale(work_pts - s->pts0, s->blend_factor_max, s->delta);
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interpolate8 = av_rescale(work_pts - s->pts0, 256, s->delta);
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ff_dlog(ctx, "process_work_frame() interpolate: %"PRId64"/256\n", interpolate8);
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if (interpolate >= s->blend_factor_max || interpolate8 > s->interp_end) {
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s->work = av_frame_clone(s->f1);
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} else if (interpolate < s->interp_start) {
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} else if (interpolate <= 0 || interpolate8 < s->interp_start) {
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s->work = av_frame_clone(s->f0);
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} else {
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ret = blend_frames(ctx, interpolate);
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if (ret < 0)
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return ret;
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if (ret == 0)
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s->work = av_frame_clone(interpolate > (s->max >> 1) ? s->f1 : s->f0);
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s->work = av_frame_clone(interpolate > (s->blend_factor_max >> 1) ? s->f1 : s->f0);
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}
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}
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@ -337,12 +339,8 @@ static void blend_frames_c(BLEND_FUNC_PARAMS)
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{
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int line, pixel;
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for (line = 0; line < height; line++) {
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for (pixel = 0; pixel < width; pixel++) {
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// integer version of (src1 * factor1) + (src2 * factor2) + 0.5
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// 0.5 is for rounding
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// 128 is the integer representation of 0.5 << 8
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dst[pixel] = ((src1[pixel] * factor1) + (src2[pixel] * factor2) + 128) >> 8;
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}
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for (pixel = 0; pixel < width; pixel++)
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dst[pixel] = ((src1[pixel] * factor1) + (src2[pixel] * factor2) + half) >> BLEND_FACTOR_DEPTH8;
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src1 += src1_linesize;
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src2 += src2_linesize;
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dst += dst_linesize;
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@ -361,7 +359,7 @@ static void blend_frames16_c(BLEND_FUNC_PARAMS)
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dst_linesize /= 2;
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for (line = 0; line < height; line++) {
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for (pixel = 0; pixel < width; pixel++)
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dstw[pixel] = ((src1w[pixel] * factor1) + (src2w[pixel] * factor2) + half) >> shift;
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dstw[pixel] = ((src1w[pixel] * factor1) + (src2w[pixel] * factor2) + half) >> BLEND_FACTOR_DEPTH16;
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src1w += src1_linesize;
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src2w += src2_linesize;
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dstw += dst_linesize;
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@ -382,8 +380,6 @@ static int config_input(AVFilterLink *inlink)
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s->bitdepth = pix_desc->comp[0].depth;
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s->vsub = pix_desc->log2_chroma_h;
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s->interp_start = s->interp_start_param << (s->bitdepth - 8);
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s->interp_end = s->interp_end_param << (s->bitdepth - 8);
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s->sad = av_pixelutils_get_sad_fn(3, 3, 2, s); // 8x8 both sources aligned
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if (!s->sad)
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@ -391,11 +387,13 @@ static int config_input(AVFilterLink *inlink)
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s->srce_time_base = inlink->time_base;
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s->max = 1 << (s->bitdepth);
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if (s->bitdepth == 8)
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if (s->bitdepth == 8) {
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s->blend_factor_max = 1 << BLEND_FACTOR_DEPTH8;
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s->blend = blend_frames_c;
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else
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} else {
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s->blend_factor_max = 1 << BLEND_FACTOR_DEPTH16;
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s->blend = blend_frames16_c;
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}
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return 0;
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}
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@ -4,52 +4,52 @@
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#dimensions 0: 320x240
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#sar 0: 1/1
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@ -4,62 +4,62 @@
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#dimensions 0: 320x240
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#sar 0: 1/1
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||||
0, 44, 44, 1, 307200, 0x0037320a
|
||||
0, 45, 45, 1, 307200, 0xaac8e1ca
|
||||
0, 46, 46, 1, 307200, 0x07cc8404
|
||||
0, 47, 47, 1, 307200, 0xbf85c994
|
||||
0, 46, 46, 1, 307200, 0xc3578407
|
||||
0, 47, 47, 1, 307200, 0xfc29c675
|
||||
0, 48, 48, 1, 307200, 0x22ed5b5a
|
||||
0, 49, 49, 1, 307200, 0x1bf7df1e
|
||||
0, 50, 50, 1, 307200, 0x3a21b4d2
|
||||
0, 49, 49, 1, 307200, 0x6d58e21e
|
||||
0, 50, 50, 1, 307200, 0xbf62b4c3
|
||||
0, 51, 51, 1, 307200, 0xbd5edb2d
|
||||
0, 52, 52, 1, 307200, 0x336a8437
|
||||
0, 53, 53, 1, 307200, 0x02c7e528
|
||||
0, 52, 52, 1, 307200, 0x55528432
|
||||
0, 53, 53, 1, 307200, 0xa3f1e514
|
||||
0, 54, 54, 1, 307200, 0xba073e6f
|
||||
0, 55, 55, 1, 307200, 0x9e25ddfe
|
||||
0, 56, 56, 1, 307200, 0x8cf55128
|
||||
0, 55, 55, 1, 307200, 0x29b8df00
|
||||
0, 56, 56, 1, 307200, 0x1517512b
|
||||
0, 57, 57, 1, 307200, 0x4e740b42
|
||||
0, 58, 58, 1, 307200, 0x8e7e705c
|
||||
0, 58, 58, 1, 307200, 0xbd6b7053
|
||||
0, 59, 59, 1, 307200, 0xe73f29ef
|
||||
|
|
|
|||
|
|
@ -4,12 +4,12 @@
|
|||
#dimensions 0: 320x240
|
||||
#sar 0: 1/1
|
||||
0, 0, 0, 1, 115200, 0x3744b3ed
|
||||
0, 1, 1, 1, 115200, 0xc44bdc65
|
||||
0, 1, 1, 1, 115200, 0xec1fdfa0
|
||||
0, 2, 2, 1, 115200, 0xa17f0d74
|
||||
0, 3, 3, 1, 115200, 0xd72532a9
|
||||
0, 4, 4, 1, 115200, 0x232d6368
|
||||
0, 4, 4, 1, 115200, 0x032e60f8
|
||||
0, 5, 5, 1, 115200, 0x6e318ba0
|
||||
0, 6, 6, 1, 115200, 0x247e846e
|
||||
0, 6, 6, 1, 115200, 0x76018292
|
||||
0, 7, 7, 1, 115200, 0x89e27599
|
||||
0, 8, 8, 1, 115200, 0x68536eac
|
||||
0, 9, 9, 1, 115200, 0x97e45fec
|
||||
0, 9, 9, 1, 115200, 0xc3ac62a8
|
||||
|
|
|
|||
Loading…
Reference in New Issue