FFmpeg
proresdsp.c
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1 /*
2  * Apple ProRes compatible decoder
3  *
4  * Copyright (c) 2010-2011 Maxim Poliakovski
5  *
6  * This file is part of FFmpeg.
7  *
8  * FFmpeg is free software; you can redistribute it and/or
9  * modify it under the terms of the GNU Lesser General Public
10  * License as published by the Free Software Foundation; either
11  * version 2.1 of the License, or (at your option) any later version.
12  *
13  * FFmpeg is distributed in the hope that it will be useful,
14  * but WITHOUT ANY WARRANTY; without even the implied warranty of
15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16  * Lesser General Public License for more details.
17  *
18  * You should have received a copy of the GNU Lesser General Public
19  * License along with FFmpeg; if not, write to the Free Software
20  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
21  */
22 
23 #include "config.h"
24 #include "libavutil/attributes.h"
25 #include "libavutil/common.h"
26 #include "idctdsp.h"
27 #include "proresdsp.h"
28 #include "simple_idct.h"
29 
30 #define CLIP_MIN (1 << 2) ///< minimum value for clipping resulting pixels
31 #define CLIP_MAX_10 (1 << 10) - CLIP_MIN - 1 ///< maximum value for clipping resulting pixels
32 #define CLIP_MAX_12 (1 << 12) - CLIP_MIN - 1 ///< maximum value for clipping resulting pixels
33 
34 #define CLIP_10(x) (av_clip((x), CLIP_MIN, CLIP_MAX_10))
35 #define CLIP_12(x) (av_clip((x), CLIP_MIN, CLIP_MAX_12))
36 
37 /**
38  * Add bias value, clamp and output pixels of a slice
39  */
40 
41 static inline void put_pixel(uint16_t *dst, ptrdiff_t linesize, const int16_t *in, int bits_per_raw_sample) {
42  int x, y, src_offset, dst_offset;
43 
44  for (y = 0, dst_offset = 0; y < 8; y++, dst_offset += linesize) {
45  for (x = 0; x < 8; x++) {
46  src_offset = (y << 3) + x;
47 
48  if (bits_per_raw_sample == 10) {
49  dst[dst_offset + x] = CLIP_10(in[src_offset]);
50  } else {//12b
51  dst[dst_offset + x] = CLIP_12(in[src_offset]);
52  }
53  }
54  }
55 }
56 
57 static void put_pixels_10(uint16_t *dst, ptrdiff_t linesize, const int16_t *in)
58 {
59  put_pixel(dst, linesize, in, 10);
60 }
61 
62 static void put_pixels_12(uint16_t *dst, ptrdiff_t linesize, const int16_t *in)
63 {
64  put_pixel(dst, linesize, in, 12);
65 }
66 
67 static void prores_idct_put_10_c(uint16_t *out, ptrdiff_t linesize, int16_t *block, const int16_t *qmat)
68 {
69  ff_prores_idct_10(block, qmat);
70  put_pixels_10(out, linesize >> 1, block);
71 }
72 
73 static void prores_idct_put_12_c(uint16_t *out, ptrdiff_t linesize, int16_t *block, const int16_t *qmat)
74 {
75  ff_prores_idct_12(block, qmat);
76  put_pixels_12(out, linesize >> 1, block);
77 }
78 
80 {
81  if (avctx->bits_per_raw_sample == 10) {
84  } else if (avctx->bits_per_raw_sample == 12) {
87  } else {
88  return AVERROR_BUG;
89  }
90 
91  if (ARCH_X86)
92  ff_proresdsp_init_x86(dsp, avctx);
93 
96  return 0;
97 }
out
FILE * out
Definition: movenc.c:54
ff_proresdsp_init
av_cold int ff_proresdsp_init(ProresDSPContext *dsp, AVCodecContext *avctx)
Definition: proresdsp.c:79
ProresDSPContext::idct_permutation_type
int idct_permutation_type
Definition: proresdsp.h:31
put_pixel
static void put_pixel(uint16_t *dst, ptrdiff_t linesize, const int16_t *in, int bits_per_raw_sample)
Add bias value, clamp and output pixels of a slice.
Definition: proresdsp.c:41
put_pixels_12
static void put_pixels_12(uint16_t *dst, ptrdiff_t linesize, const int16_t *in)
Definition: proresdsp.c:62
ProresDSPContext
Definition: proresdsp.h:30
av_cold
#define av_cold
Definition: attributes.h:90
AVCodecContext::bits_per_raw_sample
int bits_per_raw_sample
Bits per sample/pixel of internal libavcodec pixel/sample format.
Definition: avcodec.h:1757
simple_idct.h
CLIP_12
#define CLIP_12(x)
Definition: proresdsp.c:35
ProresDSPContext::idct_permutation
uint8_t idct_permutation[64]
Definition: proresdsp.h:32
FF_IDCT_PERM_NONE
@ FF_IDCT_PERM_NONE
Definition: idctdsp.h:38
CLIP_10
#define CLIP_10(x)
Definition: proresdsp.c:34
attributes.h
proresdsp.h
ff_init_scantable_permutation
av_cold void ff_init_scantable_permutation(uint8_t *idct_permutation, enum idct_permutation_type perm_type)
Definition: idctdsp.c:50
in
uint8_t pi<< 24) CONV_FUNC_GROUP(AV_SAMPLE_FMT_FLT, float, AV_SAMPLE_FMT_U8, uint8_t,(*(const uint8_t *) pi - 0x80) *(1.0f/(1<< 7))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_DBL, double, AV_SAMPLE_FMT_U8, uint8_t,(*(const uint8_t *) pi - 0x80) *(1.0/(1<< 7))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_U8, uint8_t, AV_SAMPLE_FMT_S16, int16_t,(*(const int16_t *) pi >> 8)+0x80) CONV_FUNC_GROUP(AV_SAMPLE_FMT_FLT, float, AV_SAMPLE_FMT_S16, int16_t, *(const int16_t *) pi *(1.0f/(1<< 15))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_DBL, double, AV_SAMPLE_FMT_S16, int16_t, *(const int16_t *) pi *(1.0/(1<< 15))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_U8, uint8_t, AV_SAMPLE_FMT_S32, int32_t,(*(const int32_t *) pi >> 24)+0x80) CONV_FUNC_GROUP(AV_SAMPLE_FMT_FLT, float, AV_SAMPLE_FMT_S32, int32_t, *(const int32_t *) pi *(1.0f/(1U<< 31))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_DBL, double, AV_SAMPLE_FMT_S32, int32_t, *(const int32_t *) pi *(1.0/(1U<< 31))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_U8, uint8_t, AV_SAMPLE_FMT_FLT, float, av_clip_uint8(lrintf(*(const float *) pi *(1<< 7))+0x80)) CONV_FUNC_GROUP(AV_SAMPLE_FMT_S16, int16_t, AV_SAMPLE_FMT_FLT, float, av_clip_int16(lrintf(*(const float *) pi *(1<< 15)))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_S32, int32_t, AV_SAMPLE_FMT_FLT, float, av_clipl_int32(llrintf(*(const float *) pi *(1U<< 31)))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_U8, uint8_t, AV_SAMPLE_FMT_DBL, double, av_clip_uint8(lrint(*(const double *) pi *(1<< 7))+0x80)) CONV_FUNC_GROUP(AV_SAMPLE_FMT_S16, int16_t, AV_SAMPLE_FMT_DBL, double, av_clip_int16(lrint(*(const double *) pi *(1<< 15)))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_S32, int32_t, AV_SAMPLE_FMT_DBL, double, av_clipl_int32(llrint(*(const double *) pi *(1U<< 31)))) #define SET_CONV_FUNC_GROUP(ofmt, ifmt) static void set_generic_function(AudioConvert *ac) { } void ff_audio_convert_free(AudioConvert **ac) { if(! *ac) return;ff_dither_free(&(*ac) ->dc);av_freep(ac);} AudioConvert *ff_audio_convert_alloc(AVAudioResampleContext *avr, enum AVSampleFormat out_fmt, enum AVSampleFormat in_fmt, int channels, int sample_rate, int apply_map) { AudioConvert *ac;int in_planar, out_planar;ac=av_mallocz(sizeof(*ac));if(!ac) return NULL;ac->avr=avr;ac->out_fmt=out_fmt;ac->in_fmt=in_fmt;ac->channels=channels;ac->apply_map=apply_map;if(avr->dither_method !=AV_RESAMPLE_DITHER_NONE &&av_get_packed_sample_fmt(out_fmt)==AV_SAMPLE_FMT_S16 &&av_get_bytes_per_sample(in_fmt) > 2) { ac->dc=ff_dither_alloc(avr, out_fmt, in_fmt, channels, sample_rate, apply_map);if(!ac->dc) { av_free(ac);return NULL;} return ac;} in_planar=ff_sample_fmt_is_planar(in_fmt, channels);out_planar=ff_sample_fmt_is_planar(out_fmt, channels);if(in_planar==out_planar) { ac->func_type=CONV_FUNC_TYPE_FLAT;ac->planes=in_planar ? ac->channels :1;} else if(in_planar) ac->func_type=CONV_FUNC_TYPE_INTERLEAVE;else ac->func_type=CONV_FUNC_TYPE_DEINTERLEAVE;set_generic_function(ac);if(ARCH_AARCH64) ff_audio_convert_init_aarch64(ac);if(ARCH_ARM) ff_audio_convert_init_arm(ac);if(ARCH_X86) ff_audio_convert_init_x86(ac);return ac;} int ff_audio_convert(AudioConvert *ac, AudioData *out, AudioData *in) { int use_generic=1;int len=in->nb_samples;int p;if(ac->dc) { av_log(ac->avr, AV_LOG_TRACE, "%d samples - audio_convert: %s to %s (dithered)\n", len, av_get_sample_fmt_name(ac->in_fmt), av_get_sample_fmt_name(ac->out_fmt));return ff_convert_dither(ac-> in
Definition: audio_convert.c:326
common.h
idctdsp.h
AVCodecContext
main external API structure.
Definition: avcodec.h:526
ff_prores_idct_12
void ff_prores_idct_12(int16_t *block, const int16_t *qmat)
Definition: simple_idct.c:256
put_pixels_10
static void put_pixels_10(uint16_t *dst, ptrdiff_t linesize, const int16_t *in)
Definition: proresdsp.c:57
ff_prores_idct_10
void ff_prores_idct_10(int16_t *block, const int16_t *qmat)
Special version of ff_simple_idct_int16_10bit() which does dequantization and scales by a factor of 2...
Definition: simple_idct.c:240
prores_idct_put_10_c
static void prores_idct_put_10_c(uint16_t *out, ptrdiff_t linesize, int16_t *block, const int16_t *qmat)
Definition: proresdsp.c:67
ff_proresdsp_init_x86
void ff_proresdsp_init_x86(ProresDSPContext *dsp, AVCodecContext *avctx)
Definition: proresdsp_init.c:33
AVERROR_BUG
#define AVERROR_BUG
Internal bug, also see AVERROR_BUG2.
Definition: error.h:50
block
The exact code depends on how similar the blocks are and how related they are to the block
Definition: filter_design.txt:207
ProresDSPContext::idct_put
void(* idct_put)(uint16_t *out, ptrdiff_t linesize, int16_t *block, const int16_t *qmat)
Definition: proresdsp.h:33
prores_idct_put_12_c
static void prores_idct_put_12_c(uint16_t *out, ptrdiff_t linesize, int16_t *block, const int16_t *qmat)
Definition: proresdsp.c:73