FFmpeg
framepool.c
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1 /*
2  * This file is part of FFmpeg.
3  *
4  * Copyright (c) 2015 Matthieu Bouron <matthieu.bouron stupeflix.com>
5  *
6  * FFmpeg is free software; you can redistribute it and/or
7  * modify it under the terms of the GNU Lesser General Public
8  * License as published by the Free Software Foundation; either
9  * version 2.1 of the License, or (at your option) any later version.
10  *
11  * FFmpeg is distributed in the hope that it will be useful,
12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14  * Lesser General Public License for more details.
15  *
16  * You should have received a copy of the GNU Lesser General Public
17  * License along with FFmpeg; if not, write to the Free Software
18  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
19  */
20 
21 #include "framepool.h"
22 #include "libavutil/avassert.h"
23 #include "libavutil/avutil.h"
24 #include "libavutil/buffer.h"
25 #include "libavutil/frame.h"
26 #include "libavutil/imgutils.h"
27 #include "libavutil/mem.h"
28 #include "libavutil/pixfmt.h"
29 
30 struct FFFramePool {
31 
33 
34  /* video */
35  int width;
36  int height;
37 
38  /* audio */
39  int planes;
40  int channels;
42 
43  /* common */
44  int format;
45  int align;
46  int linesize[4];
48 
49 };
50 
52  int width,
53  int height,
54  enum AVPixelFormat format,
55  int align)
56 {
57  int i, ret;
58  FFFramePool *pool;
60 
61  if (!desc)
62  return NULL;
63 
64  pool = av_mallocz(sizeof(FFFramePool));
65  if (!pool)
66  return NULL;
67 
68  pool->type = AVMEDIA_TYPE_VIDEO;
69  pool->width = width;
70  pool->height = height;
71  pool->format = format;
72  pool->align = align;
73 
74  if ((ret = av_image_check_size2(width, height, INT64_MAX, format, 0, NULL)) < 0) {
75  goto fail;
76  }
77 
78  if (!pool->linesize[0]) {
79  for(i = 1; i <= align; i += i) {
81  FFALIGN(pool->width, i));
82  if (ret < 0) {
83  goto fail;
84  }
85  if (!(pool->linesize[0] & (pool->align - 1)))
86  break;
87  }
88 
89  for (i = 0; i < 4 && pool->linesize[i]; i++) {
90  pool->linesize[i] = FFALIGN(pool->linesize[i], pool->align);
91  }
92  }
93 
94  for (i = 0; i < 4 && pool->linesize[i]; i++) {
95  int h = FFALIGN(pool->height, 32);
96  if (i == 1 || i == 2)
97  h = AV_CEIL_RSHIFT(h, desc->log2_chroma_h);
98 
99  pool->pools[i] = av_buffer_pool_init(pool->linesize[i] * h + 16 + 16 - 1,
100  alloc);
101  if (!pool->pools[i])
102  goto fail;
103  }
104 
105  if (desc->flags & AV_PIX_FMT_FLAG_PAL) {
106  pool->pools[1] = av_buffer_pool_init(AVPALETTE_SIZE, alloc);
107  if (!pool->pools[1])
108  goto fail;
109  }
110 
111  return pool;
112 
113 fail:
114  ff_frame_pool_uninit(&pool);
115  return NULL;
116 }
117 
119  int channels,
120  int nb_samples,
121  enum AVSampleFormat format,
122  int align)
123 {
124  int ret, planar;
125  FFFramePool *pool;
126 
127  pool = av_mallocz(sizeof(FFFramePool));
128  if (!pool)
129  return NULL;
130 
132 
133  pool->type = AVMEDIA_TYPE_AUDIO;
134  pool->planes = planar ? channels : 1;
135  pool->channels = channels;
136  pool->nb_samples = nb_samples;
137  pool->format = format;
138  pool->align = align;
139 
141  nb_samples, format, 0);
142  if (ret < 0)
143  goto fail;
144 
145  pool->pools[0] = av_buffer_pool_init(pool->linesize[0], NULL);
146  if (!pool->pools[0])
147  goto fail;
148 
149  return pool;
150 
151 fail:
152  ff_frame_pool_uninit(&pool);
153  return NULL;
154 }
155 
157  int *width,
158  int *height,
159  enum AVPixelFormat *format,
160  int *align)
161 {
162  if (!pool)
163  return AVERROR(EINVAL);
164 
166 
167  *width = pool->width;
168  *height = pool->height;
169  *format = pool->format;
170  *align = pool->align;
171 
172  return 0;
173 }
174 
176  int *channels,
177  int *nb_samples,
178  enum AVSampleFormat *format,
179  int *align)
180 {
181  if (!pool)
182  return AVERROR(EINVAL);
183 
185 
186  *channels = pool->channels;
187  *nb_samples = pool->nb_samples;
188  *format = pool->format;
189  *align = pool->align;
190 
191  return 0;
192 }
193 
195 {
196  int i;
197  AVFrame *frame;
198  const AVPixFmtDescriptor *desc;
199 
200  frame = av_frame_alloc();
201  if (!frame) {
202  return NULL;
203  }
204 
205  switch(pool->type) {
206  case AVMEDIA_TYPE_VIDEO:
208  if (!desc) {
209  goto fail;
210  }
211 
212  frame->width = pool->width;
213  frame->height = pool->height;
214  frame->format = pool->format;
215 
216  for (i = 0; i < 4; i++) {
217  frame->linesize[i] = pool->linesize[i];
218  if (!pool->pools[i])
219  break;
220 
221  frame->buf[i] = av_buffer_pool_get(pool->pools[i]);
222  if (!frame->buf[i])
223  goto fail;
224 
225  frame->data[i] = frame->buf[i]->data;
226  }
227 
228  if (desc->flags & AV_PIX_FMT_FLAG_PAL) {
229  enum AVPixelFormat format =
230  pool->format == AV_PIX_FMT_PAL8 ? AV_PIX_FMT_BGR8 : pool->format;
231 
232  av_assert0(frame->data[1] != NULL);
233  if (avpriv_set_systematic_pal2((uint32_t *)frame->data[1], format) < 0)
234  goto fail;
235  }
236 
237  frame->extended_data = frame->data;
238  break;
239  case AVMEDIA_TYPE_AUDIO:
240  frame->nb_samples = pool->nb_samples;
241  frame->channels = pool->channels;
242  frame->format = pool->format;
243  frame->linesize[0] = pool->linesize[0];
244 
245  if (pool->planes > AV_NUM_DATA_POINTERS) {
246  frame->extended_data = av_calloc(pool->planes,
247  sizeof(*frame->extended_data));
248  frame->nb_extended_buf = pool->planes - AV_NUM_DATA_POINTERS;
249  frame->extended_buf = av_calloc(frame->nb_extended_buf,
250  sizeof(*frame->extended_buf));
251  if (!frame->extended_data || !frame->extended_buf)
252  goto fail;
253  } else {
254  frame->extended_data = frame->data;
255  av_assert0(frame->nb_extended_buf == 0);
256  }
257 
258  for (i = 0; i < FFMIN(pool->planes, AV_NUM_DATA_POINTERS); i++) {
259  frame->buf[i] = av_buffer_pool_get(pool->pools[0]);
260  if (!frame->buf[i])
261  goto fail;
262  frame->extended_data[i] = frame->data[i] = frame->buf[i]->data;
263  }
264  for (i = 0; i < frame->nb_extended_buf; i++) {
265  frame->extended_buf[i] = av_buffer_pool_get(pool->pools[0]);
266  if (!frame->extended_buf[i])
267  goto fail;
268  frame->extended_data[i + AV_NUM_DATA_POINTERS] = frame->extended_buf[i]->data;
269  }
270 
271  break;
272  default:
273  av_assert0(0);
274  }
275 
276  return frame;
277 fail:
279  return NULL;
280 }
281 
283 {
284  int i;
285 
286  if (!pool || !*pool)
287  return;
288 
289  for (i = 0; i < 4; i++) {
290  av_buffer_pool_uninit(&(*pool)->pools[i]);
291  }
292 
293  av_freep(pool);
294 }
av_buffer_pool_init
AVBufferPool * av_buffer_pool_init(size_t size, AVBufferRef *(*alloc)(size_t size))
Allocate and initialize a buffer pool.
Definition: buffer.c:280
AVPixelFormat
AVPixelFormat
Pixel format.
Definition: pixfmt.h:64
AVERROR
Filter the word “frame” indicates either a video frame or a group of audio as stored in an AVFrame structure Format for each input and each output the list of supported formats For video that means pixel format For audio that means channel sample they are references to shared objects When the negotiation mechanism computes the intersection of the formats supported at each end of a all references to both lists are replaced with a reference to the intersection And when a single format is eventually chosen for a link amongst the remaining all references to the list are updated That means that if a filter requires that its input and output have the same format amongst a supported all it has to do is use a reference to the same list of formats query_formats can leave some formats unset and return AVERROR(EAGAIN) to cause the negotiation mechanism toagain later. That can be used by filters with complex requirements to use the format negotiated on one link to set the formats supported on another. Frame references ownership and permissions
FFFramePool::format
int format
Definition: framepool.c:44
AVBufferPool
The buffer pool.
Definition: buffer_internal.h:89
ff_frame_pool_video_init
FFFramePool * ff_frame_pool_video_init(AVBufferRef *(*alloc)(size_t size), int width, int height, enum AVPixelFormat format, int align)
Allocate and initialize a video frame pool.
Definition: framepool.c:51
av_pix_fmt_desc_get
const AVPixFmtDescriptor * av_pix_fmt_desc_get(enum AVPixelFormat pix_fmt)
Definition: pixdesc.c:2564
av_frame_free
void av_frame_free(AVFrame **frame)
Free the frame and any dynamically allocated objects in it, e.g.
Definition: frame.c:112
AVFrame
This structure describes decoded (raw) audio or video data.
Definition: frame.h:303
FFFramePool::nb_samples
int nb_samples
Definition: framepool.c:41
FFFramePool::planes
int planes
Definition: framepool.c:39
FFFramePool
Frame pool.
Definition: framepool.c:30
fail
#define fail()
Definition: checkasm.h:127
ff_frame_pool_get_video_config
int ff_frame_pool_get_video_config(FFFramePool *pool, int *width, int *height, enum AVPixelFormat *format, int *align)
Get the video frame pool configuration.
Definition: framepool.c:156
av_image_check_size2
int av_image_check_size2(unsigned int w, unsigned int h, int64_t max_pixels, enum AVPixelFormat pix_fmt, int log_offset, void *log_ctx)
Check if the given dimension of an image is valid, meaning that all bytes of a plane of an image with...
Definition: imgutils.c:289
av_frame_alloc
AVFrame * av_frame_alloc(void)
Allocate an AVFrame and set its fields to default values.
Definition: frame.c:99
AV_PIX_FMT_BGR8
@ AV_PIX_FMT_BGR8
packed RGB 3:3:2, 8bpp, (msb)2B 3G 3R(lsb)
Definition: pixfmt.h:83
avassert.h
av_buffer_pool_get
AVBufferRef * av_buffer_pool_get(AVBufferPool *pool)
Allocate a new AVBuffer, reusing an old buffer from the pool when available.
Definition: buffer.c:387
width
#define width
av_image_fill_linesizes
int av_image_fill_linesizes(int linesizes[4], enum AVPixelFormat pix_fmt, int width)
Fill plane linesizes for an image with pixel format pix_fmt and width width.
Definition: imgutils.c:89
AV_CEIL_RSHIFT
#define AV_CEIL_RSHIFT(a, b)
Definition: common.h:51
AVMEDIA_TYPE_AUDIO
@ AVMEDIA_TYPE_AUDIO
Definition: avutil.h:202
av_assert0
#define av_assert0(cond)
assert() equivalent, that is always enabled.
Definition: avassert.h:37
av_sample_fmt_is_planar
int av_sample_fmt_is_planar(enum AVSampleFormat sample_fmt)
Check if the sample format is planar.
Definition: samplefmt.c:112
channels
channels
Definition: aptx.h:33
ff_frame_pool_get
AVFrame * ff_frame_pool_get(FFFramePool *pool)
Allocate a new AVFrame, reussing old buffers from the pool when available.
Definition: framepool.c:194
FFFramePool::pools
AVBufferPool * pools[4]
Definition: framepool.c:47
avpriv_set_systematic_pal2
int avpriv_set_systematic_pal2(uint32_t pal[256], enum AVPixelFormat pix_fmt)
Definition: imgutils.c:178
NULL
#define NULL
Definition: coverity.c:32
AVPALETTE_SIZE
#define AVPALETTE_SIZE
Definition: pixfmt.h:32
av_buffer_pool_uninit
void av_buffer_pool_uninit(AVBufferPool **ppool)
Mark the pool as being available for freeing.
Definition: buffer.c:322
ff_frame_pool_uninit
void ff_frame_pool_uninit(FFFramePool **pool)
Deallocate the frame pool.
Definition: framepool.c:282
AVMediaType
AVMediaType
Definition: avutil.h:199
size
int size
Definition: twinvq_data.h:10344
AV_NUM_DATA_POINTERS
#define AV_NUM_DATA_POINTERS
Definition: frame.h:304
frame.h
buffer.h
height
#define height
FFFramePool::width
int width
Definition: framepool.c:35
i
#define i(width, name, range_min, range_max)
Definition: cbs_h2645.c:271
FFFramePool::height
int height
Definition: framepool.c:36
AVSampleFormat
AVSampleFormat
Audio sample formats.
Definition: samplefmt.h:58
FFMIN
#define FFMIN(a, b)
Definition: macros.h:49
av_mallocz
void * av_mallocz(size_t size)
Allocate a memory block with alignment suitable for all memory accesses (including vectors if availab...
Definition: mem.c:263
av_samples_get_buffer_size
int av_samples_get_buffer_size(int *linesize, int nb_channels, int nb_samples, enum AVSampleFormat sample_fmt, int align)
Get the required buffer size for the given audio parameters.
Definition: samplefmt.c:119
av_calloc
void * av_calloc(size_t nmemb, size_t size)
Definition: mem.c:271
ff_frame_pool_audio_init
FFFramePool * ff_frame_pool_audio_init(AVBufferRef *(*alloc)(size_t size), int channels, int nb_samples, enum AVSampleFormat format, int align)
Allocate and initialize an audio frame pool.
Definition: framepool.c:118
AV_PIX_FMT_PAL8
@ AV_PIX_FMT_PAL8
8 bits with AV_PIX_FMT_RGB32 palette
Definition: pixfmt.h:77
ret
ret
Definition: filter_design.txt:187
pixfmt.h
frame
these buffered frames must be flushed immediately if a new input produces new the filter must not call request_frame to get more It must just process the frame or queue it The task of requesting more frames is left to the filter s request_frame method or the application If a filter has several the filter must be ready for frames arriving randomly on any input any filter with several inputs will most likely require some kind of queuing mechanism It is perfectly acceptable to have a limited queue and to drop frames when the inputs are too unbalanced request_frame For filters that do not use the this method is called when a frame is wanted on an output For a it should directly call filter_frame on the corresponding output For a if there are queued frames already one of these frames should be pushed If the filter should request a frame on one of its repeatedly until at least one frame has been pushed Return or at least make progress towards producing a frame
Definition: filter_design.txt:264
framepool.h
FFFramePool::align
int align
Definition: framepool.c:45
FFFramePool::linesize
int linesize[4]
Definition: framepool.c:46
desc
const char * desc
Definition: libsvtav1.c:79
AVMEDIA_TYPE_VIDEO
@ AVMEDIA_TYPE_VIDEO
Definition: avutil.h:201
avutil.h
mem.h
AVBufferRef
A reference to a data buffer.
Definition: buffer.h:82
AVPixFmtDescriptor
Descriptor that unambiguously describes how the bits of a pixel are stored in the up to 4 data planes...
Definition: pixdesc.h:69
FFALIGN
#define FFALIGN(x, a)
Definition: macros.h:78
av_freep
#define av_freep(p)
Definition: tableprint_vlc.h:35
format
fg outputs[0] format
Definition: ffmpeg_filter.c:175
imgutils.h
h
h
Definition: vp9dsp_template.c:2038
planar
uint8_t pi<< 24) CONV_FUNC(AV_SAMPLE_FMT_S64, int64_t, AV_SAMPLE_FMT_U8,(uint64_t)((*(const uint8_t *) pi - 0x80U))<< 56) CONV_FUNC(AV_SAMPLE_FMT_FLT, float, AV_SAMPLE_FMT_U8,(*(const uint8_t *) pi - 0x80) *(1.0f/(1<< 7))) CONV_FUNC(AV_SAMPLE_FMT_DBL, double, AV_SAMPLE_FMT_U8,(*(const uint8_t *) pi - 0x80) *(1.0/(1<< 7))) CONV_FUNC(AV_SAMPLE_FMT_U8, uint8_t, AV_SAMPLE_FMT_S16,(*(const int16_t *) pi >>8)+0x80) CONV_FUNC(AV_SAMPLE_FMT_S32, int32_t, AV_SAMPLE_FMT_S16, *(const int16_t *) pi *(1<< 16)) CONV_FUNC(AV_SAMPLE_FMT_S64, int64_t, AV_SAMPLE_FMT_S16,(uint64_t)(*(const int16_t *) pi)<< 48) CONV_FUNC(AV_SAMPLE_FMT_FLT, float, AV_SAMPLE_FMT_S16, *(const int16_t *) pi *(1.0f/(1<< 15))) CONV_FUNC(AV_SAMPLE_FMT_DBL, double, AV_SAMPLE_FMT_S16, *(const int16_t *) pi *(1.0/(1<< 15))) CONV_FUNC(AV_SAMPLE_FMT_U8, uint8_t, AV_SAMPLE_FMT_S32,(*(const int32_t *) pi >>24)+0x80) CONV_FUNC(AV_SAMPLE_FMT_S64, int64_t, AV_SAMPLE_FMT_S32,(uint64_t)(*(const int32_t *) pi)<< 32) CONV_FUNC(AV_SAMPLE_FMT_FLT, float, AV_SAMPLE_FMT_S32, *(const int32_t *) pi *(1.0f/(1U<< 31))) CONV_FUNC(AV_SAMPLE_FMT_DBL, double, AV_SAMPLE_FMT_S32, *(const int32_t *) pi *(1.0/(1U<< 31))) CONV_FUNC(AV_SAMPLE_FMT_U8, uint8_t, AV_SAMPLE_FMT_S64,(*(const int64_t *) pi >>56)+0x80) CONV_FUNC(AV_SAMPLE_FMT_FLT, float, AV_SAMPLE_FMT_S64, *(const int64_t *) pi *(1.0f/(UINT64_C(1)<< 63))) CONV_FUNC(AV_SAMPLE_FMT_DBL, double, AV_SAMPLE_FMT_S64, *(const int64_t *) pi *(1.0/(UINT64_C(1)<< 63))) CONV_FUNC(AV_SAMPLE_FMT_U8, uint8_t, AV_SAMPLE_FMT_FLT, av_clip_uint8(lrintf(*(const float *) pi *(1<< 7))+0x80)) CONV_FUNC(AV_SAMPLE_FMT_S16, int16_t, AV_SAMPLE_FMT_FLT, av_clip_int16(lrintf(*(const float *) pi *(1<< 15)))) CONV_FUNC(AV_SAMPLE_FMT_S32, int32_t, AV_SAMPLE_FMT_FLT, av_clipl_int32(llrintf(*(const float *) pi *(1U<< 31)))) CONV_FUNC(AV_SAMPLE_FMT_S64, int64_t, AV_SAMPLE_FMT_FLT, llrintf(*(const float *) pi *(UINT64_C(1)<< 63))) CONV_FUNC(AV_SAMPLE_FMT_U8, uint8_t, AV_SAMPLE_FMT_DBL, av_clip_uint8(lrint(*(const double *) pi *(1<< 7))+0x80)) CONV_FUNC(AV_SAMPLE_FMT_S16, int16_t, AV_SAMPLE_FMT_DBL, av_clip_int16(lrint(*(const double *) pi *(1<< 15)))) CONV_FUNC(AV_SAMPLE_FMT_S32, int32_t, AV_SAMPLE_FMT_DBL, av_clipl_int32(llrint(*(const double *) pi *(1U<< 31)))) CONV_FUNC(AV_SAMPLE_FMT_S64, int64_t, AV_SAMPLE_FMT_DBL, llrint(*(const double *) pi *(UINT64_C(1)<< 63))) #define FMT_PAIR_FUNC(out, in) static conv_func_type *const fmt_pair_to_conv_functions[AV_SAMPLE_FMT_NB *AV_SAMPLE_FMT_NB]={ FMT_PAIR_FUNC(AV_SAMPLE_FMT_U8, AV_SAMPLE_FMT_U8), FMT_PAIR_FUNC(AV_SAMPLE_FMT_S16, AV_SAMPLE_FMT_U8), FMT_PAIR_FUNC(AV_SAMPLE_FMT_S32, AV_SAMPLE_FMT_U8), FMT_PAIR_FUNC(AV_SAMPLE_FMT_FLT, AV_SAMPLE_FMT_U8), FMT_PAIR_FUNC(AV_SAMPLE_FMT_DBL, AV_SAMPLE_FMT_U8), FMT_PAIR_FUNC(AV_SAMPLE_FMT_S64, AV_SAMPLE_FMT_U8), FMT_PAIR_FUNC(AV_SAMPLE_FMT_U8, AV_SAMPLE_FMT_S16), FMT_PAIR_FUNC(AV_SAMPLE_FMT_S16, AV_SAMPLE_FMT_S16), FMT_PAIR_FUNC(AV_SAMPLE_FMT_S32, AV_SAMPLE_FMT_S16), FMT_PAIR_FUNC(AV_SAMPLE_FMT_FLT, AV_SAMPLE_FMT_S16), FMT_PAIR_FUNC(AV_SAMPLE_FMT_DBL, AV_SAMPLE_FMT_S16), FMT_PAIR_FUNC(AV_SAMPLE_FMT_S64, AV_SAMPLE_FMT_S16), FMT_PAIR_FUNC(AV_SAMPLE_FMT_U8, AV_SAMPLE_FMT_S32), FMT_PAIR_FUNC(AV_SAMPLE_FMT_S16, AV_SAMPLE_FMT_S32), FMT_PAIR_FUNC(AV_SAMPLE_FMT_S32, AV_SAMPLE_FMT_S32), FMT_PAIR_FUNC(AV_SAMPLE_FMT_FLT, AV_SAMPLE_FMT_S32), FMT_PAIR_FUNC(AV_SAMPLE_FMT_DBL, AV_SAMPLE_FMT_S32), FMT_PAIR_FUNC(AV_SAMPLE_FMT_S64, AV_SAMPLE_FMT_S32), FMT_PAIR_FUNC(AV_SAMPLE_FMT_U8, AV_SAMPLE_FMT_FLT), FMT_PAIR_FUNC(AV_SAMPLE_FMT_S16, AV_SAMPLE_FMT_FLT), FMT_PAIR_FUNC(AV_SAMPLE_FMT_S32, AV_SAMPLE_FMT_FLT), FMT_PAIR_FUNC(AV_SAMPLE_FMT_FLT, AV_SAMPLE_FMT_FLT), FMT_PAIR_FUNC(AV_SAMPLE_FMT_DBL, AV_SAMPLE_FMT_FLT), FMT_PAIR_FUNC(AV_SAMPLE_FMT_S64, AV_SAMPLE_FMT_FLT), FMT_PAIR_FUNC(AV_SAMPLE_FMT_U8, AV_SAMPLE_FMT_DBL), FMT_PAIR_FUNC(AV_SAMPLE_FMT_S16, AV_SAMPLE_FMT_DBL), FMT_PAIR_FUNC(AV_SAMPLE_FMT_S32, AV_SAMPLE_FMT_DBL), FMT_PAIR_FUNC(AV_SAMPLE_FMT_FLT, AV_SAMPLE_FMT_DBL), FMT_PAIR_FUNC(AV_SAMPLE_FMT_DBL, AV_SAMPLE_FMT_DBL), FMT_PAIR_FUNC(AV_SAMPLE_FMT_S64, AV_SAMPLE_FMT_DBL), FMT_PAIR_FUNC(AV_SAMPLE_FMT_U8, AV_SAMPLE_FMT_S64), FMT_PAIR_FUNC(AV_SAMPLE_FMT_S16, AV_SAMPLE_FMT_S64), FMT_PAIR_FUNC(AV_SAMPLE_FMT_S32, AV_SAMPLE_FMT_S64), FMT_PAIR_FUNC(AV_SAMPLE_FMT_FLT, AV_SAMPLE_FMT_S64), FMT_PAIR_FUNC(AV_SAMPLE_FMT_DBL, AV_SAMPLE_FMT_S64), FMT_PAIR_FUNC(AV_SAMPLE_FMT_S64, AV_SAMPLE_FMT_S64), };static void cpy1(uint8_t **dst, const uint8_t **src, int len){ memcpy(*dst, *src, len);} static void cpy2(uint8_t **dst, const uint8_t **src, int len){ memcpy(*dst, *src, 2 *len);} static void cpy4(uint8_t **dst, const uint8_t **src, int len){ memcpy(*dst, *src, 4 *len);} static void cpy8(uint8_t **dst, const uint8_t **src, int len){ memcpy(*dst, *src, 8 *len);} AudioConvert *swri_audio_convert_alloc(enum AVSampleFormat out_fmt, enum AVSampleFormat in_fmt, int channels, const int *ch_map, int flags) { AudioConvert *ctx;conv_func_type *f=fmt_pair_to_conv_functions[av_get_packed_sample_fmt(out_fmt)+AV_SAMPLE_FMT_NB *av_get_packed_sample_fmt(in_fmt)];if(!f) return NULL;ctx=av_mallocz(sizeof(*ctx));if(!ctx) return NULL;if(channels==1){ in_fmt=av_get_planar_sample_fmt(in_fmt);out_fmt=av_get_planar_sample_fmt(out_fmt);} ctx->channels=channels;ctx->conv_f=f;ctx->ch_map=ch_map;if(in_fmt==AV_SAMPLE_FMT_U8||in_fmt==AV_SAMPLE_FMT_U8P) memset(ctx->silence, 0x80, sizeof(ctx->silence));if(out_fmt==in_fmt &&!ch_map) { switch(av_get_bytes_per_sample(in_fmt)){ case 1:ctx->simd_f=cpy1;break;case 2:ctx->simd_f=cpy2;break;case 4:ctx->simd_f=cpy4;break;case 8:ctx->simd_f=cpy8;break;} } if(HAVE_X86ASM &&1) swri_audio_convert_init_x86(ctx, out_fmt, in_fmt, channels);if(ARCH_ARM) swri_audio_convert_init_arm(ctx, out_fmt, in_fmt, channels);if(ARCH_AARCH64) swri_audio_convert_init_aarch64(ctx, out_fmt, in_fmt, channels);return ctx;} void swri_audio_convert_free(AudioConvert **ctx) { av_freep(ctx);} int swri_audio_convert(AudioConvert *ctx, AudioData *out, AudioData *in, int len) { int ch;int off=0;const int os=(out->planar ? 1 :out->ch_count) *out->bps;unsigned misaligned=0;av_assert0(ctx->channels==out->ch_count);if(ctx->in_simd_align_mask) { int planes=in->planar ? in->ch_count :1;unsigned m=0;for(ch=0;ch< planes;ch++) m|=(intptr_t) in->ch[ch];misaligned|=m &ctx->in_simd_align_mask;} if(ctx->out_simd_align_mask) { int planes=out->planar ? out->ch_count :1;unsigned m=0;for(ch=0;ch< planes;ch++) m|=(intptr_t) out->ch[ch];misaligned|=m &ctx->out_simd_align_mask;} if(ctx->simd_f &&!ctx->ch_map &&!misaligned){ off=len &~15;av_assert1(off >=0);av_assert1(off<=len);av_assert2(ctx->channels==SWR_CH_MAX||!in->ch[ctx->channels]);if(off >0){ if(out->planar==in->planar){ int planes=out->planar ? out->ch_count :1;for(ch=0;ch< planes;ch++){ ctx->simd_f(out->ch+ch,(const uint8_t **) in->ch+ch, off *(out-> planar
Definition: audioconvert.c:56
AV_PIX_FMT_FLAG_PAL
#define AV_PIX_FMT_FLAG_PAL
Pixel format has a palette in data[1], values are indexes in this palette.
Definition: pixdesc.h:120
ff_frame_pool_get_audio_config
int ff_frame_pool_get_audio_config(FFFramePool *pool, int *channels, int *nb_samples, enum AVSampleFormat *format, int *align)
Get the audio frame pool configuration.
Definition: framepool.c:175
FFFramePool::type
enum AVMediaType type
Definition: framepool.c:32
FFFramePool::channels
int channels
Definition: framepool.c:40