国家能源局—副局长：刘宝华

Line	Branch	Exec	Source
1			/*
2			* Copyright (c) 2011 Stefano Sabatini
3			*
4			* This file is part of FFmpeg.
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			/**
22			* @file
23			* filter for showing textual audio frame information
24			*/
25
26			#include <inttypes.h>
27
28			#include "libavutil/adler32.h"
29			#include "libavutil/attributes.h"
30			#include "libavutil/channel_layout.h"
31			#include "libavutil/downmix_info.h"
32			#include "libavutil/mem.h"
33			#include "libavutil/replaygain.h"
34			#include "libavutil/timestamp.h"
35			#include "libavutil/samplefmt.h"
36
37			#include "libavcodec/defs.h"
38
39			#include "audio.h"
40			#include "avfilter.h"
41			#include "filters.h"
42
43			typedef struct AShowInfoContext {
44			/**
45			* Scratch space for individual plane checksums for planar audio
46			*/
47			uint32_t *plane_checksums;
48			} AShowInfoContext;
49
50		✗	static av_cold void uninit(AVFilterContext *ctx)
51			{
52		✗	AShowInfoContext *s = ctx->priv;
53		✗	av_freep(&s->plane_checksums);
54		✗	}
55
56		✗	static void dump_matrixenc(AVFilterContext *ctx, AVFrameSideData *sd)
57			{
58			enum AVMatrixEncoding enc;
59
60		✗	av_log(ctx, AV_LOG_INFO, "matrix encoding: ");
61
62		✗	if (sd->size < sizeof(enum AVMatrixEncoding)) {
63		✗	av_log(ctx, AV_LOG_INFO, "invalid data");
64		✗	return;
65			}
66
67		✗	enc = *(enum AVMatrixEncoding *)sd->data;
68		✗	switch (enc) {
69		✗	case AV_MATRIX_ENCODING_NONE: av_log(ctx, AV_LOG_INFO, "none"); break;
70		✗	case AV_MATRIX_ENCODING_DOLBY: av_log(ctx, AV_LOG_INFO, "Dolby Surround"); break;
71		✗	case AV_MATRIX_ENCODING_DPLII: av_log(ctx, AV_LOG_INFO, "Dolby Pro Logic II"); break;
72		✗	case AV_MATRIX_ENCODING_DPLIIX: av_log(ctx, AV_LOG_INFO, "Dolby Pro Logic IIx"); break;
73		✗	case AV_MATRIX_ENCODING_DPLIIZ: av_log(ctx, AV_LOG_INFO, "Dolby Pro Logic IIz"); break;
74		✗	case AV_MATRIX_ENCODING_DOLBYEX: av_log(ctx, AV_LOG_INFO, "Dolby EX"); break;
75		✗	case AV_MATRIX_ENCODING_DOLBYHEADPHONE: av_log(ctx, AV_LOG_INFO, "Dolby Headphone"); break;
76		✗	default: av_log(ctx, AV_LOG_WARNING, "unknown"); break;
77			}
78			}
79
80		✗	static void dump_downmix(AVFilterContext *ctx, AVFrameSideData *sd)
81			{
82			AVDownmixInfo *di;
83
84		✗	av_log(ctx, AV_LOG_INFO, "downmix: ");
85		✗	if (sd->size < sizeof(*di)) {
86		✗	av_log(ctx, AV_LOG_INFO, "invalid data");
87		✗	return;
88			}
89
90		✗	di = (AVDownmixInfo *)sd->data;
91
92		✗	av_log(ctx, AV_LOG_INFO, "preferred downmix type - ");
93		✗	switch (di->preferred_downmix_type) {
94		✗	case AV_DOWNMIX_TYPE_LORO: av_log(ctx, AV_LOG_INFO, "Lo/Ro"); break;
95		✗	case AV_DOWNMIX_TYPE_LTRT: av_log(ctx, AV_LOG_INFO, "Lt/Rt"); break;
96		✗	case AV_DOWNMIX_TYPE_DPLII: av_log(ctx, AV_LOG_INFO, "Dolby Pro Logic II"); break;
97		✗	default: av_log(ctx, AV_LOG_WARNING, "unknown"); break;
98			}
99
100		✗	av_log(ctx, AV_LOG_INFO, " Mix levels: center %f (%f ltrt) - "
101			"surround %f (%f ltrt) - lfe %f",
102			di->center_mix_level, di->center_mix_level_ltrt,
103			di->surround_mix_level, di->surround_mix_level_ltrt,
104			di->lfe_mix_level);
105			}
106
107		✗	static void print_gain(AVFilterContext *ctx, const char *str, int32_t gain)
108			{
109		✗	av_log(ctx, AV_LOG_INFO, "%s - ", str);
110		✗	if (gain == INT32_MIN)
111		✗	av_log(ctx, AV_LOG_INFO, "unknown");
112			else
113		✗	av_log(ctx, AV_LOG_INFO, "%f", gain / 100000.0f);
114		✗	av_log(ctx, AV_LOG_INFO, ", ");
115		✗	}
116
117		✗	static void print_peak(AVFilterContext *ctx, const char *str, uint32_t peak)
118			{
119		✗	av_log(ctx, AV_LOG_INFO, "%s - ", str);
120		✗	if (!peak)
121		✗	av_log(ctx, AV_LOG_INFO, "unknown");
122			else
123		✗	av_log(ctx, AV_LOG_INFO, "%f", peak / 100000.0f);
124		✗	av_log(ctx, AV_LOG_INFO, ", ");
125		✗	}
126
127		✗	static void dump_replaygain(AVFilterContext *ctx, AVFrameSideData *sd)
128			{
129			AVReplayGain *rg;
130
131		✗	av_log(ctx, AV_LOG_INFO, "replaygain: ");
132		✗	if (sd->size < sizeof(*rg)) {
133		✗	av_log(ctx, AV_LOG_INFO, "invalid data");
134		✗	return;
135			}
136		✗	rg = (AVReplayGain*)sd->data;
137
138		✗	print_gain(ctx, "track gain", rg->track_gain);
139		✗	print_peak(ctx, "track peak", rg->track_peak);
140		✗	print_gain(ctx, "album gain", rg->album_gain);
141		✗	print_peak(ctx, "album peak", rg->album_peak);
142			}
143
144		✗	static void dump_audio_service_type(AVFilterContext *ctx, AVFrameSideData *sd)
145			{
146			enum AVAudioServiceType *ast;
147
148		✗	av_log(ctx, AV_LOG_INFO, "audio service type: ");
149		✗	if (sd->size < sizeof(*ast)) {
150		✗	av_log(ctx, AV_LOG_INFO, "invalid data");
151		✗	return;
152			}
153		✗	ast = (enum AVAudioServiceType*)sd->data;
154		✗	switch (*ast) {
155		✗	case AV_AUDIO_SERVICE_TYPE_MAIN: av_log(ctx, AV_LOG_INFO, "Main Audio Service"); break;
156		✗	case AV_AUDIO_SERVICE_TYPE_EFFECTS: av_log(ctx, AV_LOG_INFO, "Effects"); break;
157		✗	case AV_AUDIO_SERVICE_TYPE_VISUALLY_IMPAIRED: av_log(ctx, AV_LOG_INFO, "Visually Impaired"); break;
158		✗	case AV_AUDIO_SERVICE_TYPE_HEARING_IMPAIRED: av_log(ctx, AV_LOG_INFO, "Hearing Impaired"); break;
159		✗	case AV_AUDIO_SERVICE_TYPE_DIALOGUE: av_log(ctx, AV_LOG_INFO, "Dialogue"); break;
160		✗	case AV_AUDIO_SERVICE_TYPE_COMMENTARY: av_log(ctx, AV_LOG_INFO, "Commentary"); break;
161		✗	case AV_AUDIO_SERVICE_TYPE_EMERGENCY: av_log(ctx, AV_LOG_INFO, "Emergency"); break;
162		✗	case AV_AUDIO_SERVICE_TYPE_VOICE_OVER: av_log(ctx, AV_LOG_INFO, "Voice Over"); break;
163		✗	case AV_AUDIO_SERVICE_TYPE_KARAOKE: av_log(ctx, AV_LOG_INFO, "Karaoke"); break;
164		✗	default: av_log(ctx, AV_LOG_INFO, "unknown"); break;
165			}
166			}
167
168		✗	static void dump_unknown(AVFilterContext *ctx, AVFrameSideData *sd)
169			{
170		✗	av_log(ctx, AV_LOG_INFO, "unknown side data type: %d, size "
171		✗	"%"SIZE_SPECIFIER" bytes", sd->type, sd->size);
172		✗	}
173
174		✗	static int filter_frame(AVFilterLink *inlink, AVFrame *buf)
175			{
176		✗	FilterLink *inl = ff_filter_link(inlink);
177		✗	AVFilterContext *ctx = inlink->dst;
178		✗	AShowInfoContext *s = ctx->priv;
179			char chlayout_str[128];
180		✗	uint32_t checksum = 0;
181		✗	int channels = inlink->ch_layout.nb_channels;
182		✗	int planar = av_sample_fmt_is_planar(buf->format);
183		✗	int block_align = av_get_bytes_per_sample(buf->format) * (planar ? 1 : channels);
184		✗	int data_size = buf->nb_samples * block_align;
185		✗	int planes = planar ? channels : 1;
186			int i;
187		✗	void *tmp_ptr = av_realloc_array(s->plane_checksums, channels, sizeof(*s->plane_checksums));
188
189		✗	if (!tmp_ptr)
190		✗	return AVERROR(ENOMEM);
191		✗	s->plane_checksums = tmp_ptr;
192
193		✗	for (i = 0; i < planes; i++) {
194		✗	uint8_t *data = buf->extended_data[i];
195
196		✗	s->plane_checksums[i] = av_adler32_update(0, data, data_size);
197		✗	checksum = i ? av_adler32_update(checksum, data, data_size) :
198		✗	s->plane_checksums[0];
199			}
200
201		✗	av_channel_layout_describe(&buf->ch_layout, chlayout_str, sizeof(chlayout_str));
202
203		✗	av_log(ctx, AV_LOG_INFO,
204			"n:%"PRId64" pts:%s pts_time:%s "
205			"fmt:%s channels:%d chlayout:%s rate:%d nb_samples:%d "
206			"checksum:%08"PRIX32" ",
207			inl->frame_count_out,
208		✗	av_ts2str(buf->pts), av_ts2timestr(buf->pts, &inlink->time_base),
209		✗	av_get_sample_fmt_name(buf->format), buf->ch_layout.nb_channels, chlayout_str,
210			buf->sample_rate, buf->nb_samples,
211			checksum);
212
213		✗	av_log(ctx, AV_LOG_INFO, "plane_checksums: [ ");
214		✗	for (i = 0; i < planes; i++)
215		✗	av_log(ctx, AV_LOG_INFO, "%08"PRIX32" ", s->plane_checksums[i]);
216		✗	av_log(ctx, AV_LOG_INFO, "]\n");
217
218		✗	for (i = 0; i < buf->nb_side_data; i++) {
219		✗	AVFrameSideData *sd = buf->side_data[i];
220
221		✗	av_log(ctx, AV_LOG_INFO, " side data - ");
222		✗	switch (sd->type) {
223		✗	case AV_FRAME_DATA_MATRIXENCODING: dump_matrixenc (ctx, sd); break;
224		✗	case AV_FRAME_DATA_DOWNMIX_INFO: dump_downmix (ctx, sd); break;
225		✗	case AV_FRAME_DATA_REPLAYGAIN: dump_replaygain(ctx, sd); break;
226		✗	case AV_FRAME_DATA_AUDIO_SERVICE_TYPE: dump_audio_service_type(ctx, sd); break;
227		✗	default: dump_unknown (ctx, sd); break;
228			}
229
230		✗	av_log(ctx, AV_LOG_INFO, "\n");
231			}
232
233		✗	return ff_filter_frame(inlink->dst->outputs[0], buf);
234			}
235
236			static const AVFilterPad inputs[] = {
237			{
238			.name = "default",
239			.type = AVMEDIA_TYPE_AUDIO,
240			.filter_frame = filter_frame,
241			},
242			};
243
244			const FFFilter ff_af_ashowinfo = {
245			.p.name = "ashowinfo",
246			.p.description = NULL_IF_CONFIG_SMALL("Show textual information for each audio frame."),
247			.p.flags = AVFILTER_FLAG_METADATA_ONLY,
248			.priv_size = sizeof(AShowInfoContext),
249			.uninit = uninit,
250			FILTER_INPUTS(inputs),
251			FILTER_OUTPUTS(ff_audio_default_filterpad),
252			};
253