[deb_ffmpeg.git] / ffmpeg / libavfilter / f_interleave.c

/*
 * Copyright (c) 2013 Stefano Sabatini
 *
 * This file is part of FFmpeg.
 *
 * FFmpeg is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2.1 of the License, or (at your option) any later version.
 *
 * FFmpeg is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with FFmpeg; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
 */

/**
 * @file
 * audio and video interleaver
 */

#include "libavutil/avassert.h"
#include "libavutil/avstring.h"
#include "libavutil/opt.h"
#include "avfilter.h"
#include "bufferqueue.h"
#include "formats.h"
#include "internal.h"
#include "audio.h"
#include "video.h"

typedef struct {
    const AVClass *class;
    int nb_inputs;
    struct FFBufQueue *queues;
} InterleaveContext;

#define OFFSET(x) offsetof(InterleaveContext, x)

#define DEFINE_OPTIONS(filt_name, flags_)                           \
static const AVOption filt_name##_options[] = {                     \
   { "nb_inputs", "set number of inputs", OFFSET(nb_inputs), AV_OPT_TYPE_INT, {.i64 = 2}, 1, INT_MAX, .flags = flags_ }, \
   { "n",         "set number of inputs", OFFSET(nb_inputs), AV_OPT_TYPE_INT, {.i64 = 2}, 1, INT_MAX, .flags = flags_ }, \
   { NULL }                                                         \
}

inline static int push_frame(AVFilterContext *ctx)
{
    InterleaveContext *s = ctx->priv;
    AVFrame *frame;
    int i, queue_idx = -1;
    int64_t pts_min = INT64_MAX;

    /* look for oldest frame */
    for (i = 0; i < ctx->nb_inputs; i++) {
        struct FFBufQueue *q = &s->queues[i];

        if (!q->available && !ctx->inputs[i]->closed)
            return 0;
        if (q->available) {
            frame = ff_bufqueue_peek(q, 0);
            if (frame->pts < pts_min) {
                pts_min = frame->pts;
                queue_idx = i;
            }
        }
    }

    /* all inputs are closed */
    if (queue_idx < 0)
        return AVERROR_EOF;

    frame = ff_bufqueue_get(&s->queues[queue_idx]);
    av_log(ctx, AV_LOG_DEBUG, "queue:%d -> frame time:%f\n",
           queue_idx, frame->pts * av_q2d(AV_TIME_BASE_Q));
    return ff_filter_frame(ctx->outputs[0], frame);
}

static int filter_frame(AVFilterLink *inlink, AVFrame *frame)
{
    AVFilterContext *ctx = inlink->dst;
    InterleaveContext *s = ctx->priv;
    unsigned in_no = FF_INLINK_IDX(inlink);

    if (frame->pts == AV_NOPTS_VALUE) {
        av_log(ctx, AV_LOG_WARNING,
               "NOPTS value for input frame cannot be accepted, frame discarded\n");
        av_frame_free(&frame);
        return AVERROR_INVALIDDATA;
    }

    /* queue frame */
    frame->pts = av_rescale_q(frame->pts, inlink->time_base, AV_TIME_BASE_Q);
    av_log(ctx, AV_LOG_DEBUG, "frame pts:%f -> queue idx:%d available:%d\n",
           frame->pts * av_q2d(AV_TIME_BASE_Q), in_no, s->queues[in_no].available);
    ff_bufqueue_add(ctx, &s->queues[in_no], frame);

    return push_frame(ctx);
}

static av_cold int init(AVFilterContext *ctx)
{
    InterleaveContext *s = ctx->priv;
    const AVFilterPad *outpad = &ctx->filter->outputs[0];
    int i;

    s->queues = av_calloc(s->nb_inputs, sizeof(s->queues[0]));
    if (!s->queues)
        return AVERROR(ENOMEM);

    for (i = 0; i < s->nb_inputs; i++) {
        AVFilterPad inpad = { 0 };

        inpad.name = av_asprintf("input%d", i);
        if (!inpad.name)
            return AVERROR(ENOMEM);
        inpad.type         = outpad->type;
        inpad.filter_frame = filter_frame;

        switch (outpad->type) {
        case AVMEDIA_TYPE_VIDEO:
            inpad.get_video_buffer = ff_null_get_video_buffer; break;
        case AVMEDIA_TYPE_AUDIO:
            inpad.get_audio_buffer = ff_null_get_audio_buffer; break;
        default:
            av_assert0(0);
        }
        ff_insert_inpad(ctx, i, &inpad);
    }

    return 0;
}

static av_cold void uninit(AVFilterContext *ctx)
{
    InterleaveContext *s = ctx->priv;
    int i;

    for (i = 0; i < ctx->nb_inputs; i++) {
        ff_bufqueue_discard_all(&s->queues[i]);
        av_freep(&s->queues[i]);
        av_freep(&ctx->input_pads[i].name);
    }
}

static int config_output(AVFilterLink *outlink)
{
    AVFilterContext *ctx = outlink->src;
    AVFilterLink *inlink0 = ctx->inputs[0];
    int i;

    if (outlink->type == AVMEDIA_TYPE_VIDEO) {
        outlink->time_base           = AV_TIME_BASE_Q;
        outlink->w                   = inlink0->w;
        outlink->h                   = inlink0->h;
        outlink->sample_aspect_ratio = inlink0->sample_aspect_ratio;
        outlink->format              = inlink0->format;
        outlink->frame_rate = (AVRational) {1, 0};
        for (i = 1; i < ctx->nb_inputs; i++) {
            AVFilterLink *inlink = ctx->inputs[i];

            if (outlink->w                       != inlink->w                       ||
                outlink->h                       != inlink->h                       ||
                outlink->sample_aspect_ratio.num != inlink->sample_aspect_ratio.num ||
                outlink->sample_aspect_ratio.den != inlink->sample_aspect_ratio.den) {
                av_log(ctx, AV_LOG_ERROR, "Parameters for input link %s "
                       "(size %dx%d, SAR %d:%d) do not match the corresponding "
                       "output link parameters (%dx%d, SAR %d:%d)\n",
                       ctx->input_pads[i].name, inlink->w, inlink->h,
                       inlink->sample_aspect_ratio.num,
                       inlink->sample_aspect_ratio.den,
                       outlink->w, outlink->h,
                       outlink->sample_aspect_ratio.num,
                       outlink->sample_aspect_ratio.den);
                return AVERROR(EINVAL);
            }
        }
    }

    outlink->flags |= FF_LINK_FLAG_REQUEST_LOOP;
    return 0;
}

static int request_frame(AVFilterLink *outlink)
{
    AVFilterContext *ctx = outlink->src;
    InterleaveContext *s = ctx->priv;
    int i, ret;

    for (i = 0; i < ctx->nb_inputs; i++) {
        if (!s->queues[i].available && !ctx->inputs[i]->closed) {
            ret = ff_request_frame(ctx->inputs[i]);
            if (ret != AVERROR_EOF)
                return ret;
        }
    }

    return push_frame(ctx);
}

#if CONFIG_INTERLEAVE_FILTER

DEFINE_OPTIONS(interleave, AV_OPT_FLAG_VIDEO_PARAM|AV_OPT_FLAG_FILTERING_PARAM);
AVFILTER_DEFINE_CLASS(interleave);

static const AVFilterPad interleave_outputs[] = {
    {
        .name          = "default",
        .type          = AVMEDIA_TYPE_VIDEO,
        .config_props  = config_output,
        .request_frame = request_frame,
    },
    { NULL }
};

AVFilter ff_vf_interleave = {
    .name        = "interleave",
    .description = NULL_IF_CONFIG_SMALL("Temporally interleave video inputs."),
    .priv_size   = sizeof(InterleaveContext),
    .init        = init,
    .uninit      = uninit,
    .outputs     = interleave_outputs,
    .priv_class  = &interleave_class,
    .flags       = AVFILTER_FLAG_DYNAMIC_INPUTS,
};

#endif

#if CONFIG_AINTERLEAVE_FILTER

DEFINE_OPTIONS(ainterleave, AV_OPT_FLAG_AUDIO_PARAM|AV_OPT_FLAG_FILTERING_PARAM);
AVFILTER_DEFINE_CLASS(ainterleave);

static const AVFilterPad ainterleave_outputs[] = {
    {
        .name          = "default",
        .type          = AVMEDIA_TYPE_AUDIO,
        .config_props  = config_output,
        .request_frame = request_frame,
    },
    { NULL }
};

AVFilter ff_af_ainterleave = {
    .name        = "ainterleave",
    .description = NULL_IF_CONFIG_SMALL("Temporally interleave audio inputs."),
    .priv_size   = sizeof(InterleaveContext),
    .init        = init,
    .uninit      = uninit,
    .outputs     = ainterleave_outputs,
    .priv_class  = &ainterleave_class,
    .flags       = AVFILTER_FLAG_DYNAMIC_INPUTS,
};

#endif
Commit	Line	Data
2ba45a60 DM	1	/*
	2	* Copyright (c) 2013 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	* audio and video interleaver
	24	*/
	25
	26	#include "libavutil/avassert.h"
	27	#include "libavutil/avstring.h"
	28	#include "libavutil/opt.h"
	29	#include "avfilter.h"
	30	#include "bufferqueue.h"
	31	#include "formats.h"
	32	#include "internal.h"
	33	#include "audio.h"
	34	#include "video.h"
	35
	36	typedef struct {
	37	const AVClass *class;
	38	int nb_inputs;
	39	struct FFBufQueue *queues;
	40	} InterleaveContext;
	41
	42	#define OFFSET(x) offsetof(InterleaveContext, x)
	43
	44	#define DEFINE_OPTIONS(filt_name, flags_) \
	45	static const AVOption filt_name##_options[] = { \
	46	{ "nb_inputs", "set number of inputs", OFFSET(nb_inputs), AV_OPT_TYPE_INT, {.i64 = 2}, 1, INT_MAX, .flags = flags_ }, \
	47	{ "n", "set number of inputs", OFFSET(nb_inputs), AV_OPT_TYPE_INT, {.i64 = 2}, 1, INT_MAX, .flags = flags_ }, \
	48	{ NULL } \
	49	}
	50
	51	inline static int push_frame(AVFilterContext *ctx)
	52	{
	53	InterleaveContext *s = ctx->priv;
	54	AVFrame *frame;
	55	int i, queue_idx = -1;
	56	int64_t pts_min = INT64_MAX;
	57
	58	/* look for oldest frame */
	59	for (i = 0; i < ctx->nb_inputs; i++) {
	60	struct FFBufQueue *q = &s->queues[i];
	61
	62	if (!q->available && !ctx->inputs[i]->closed)
	63	return 0;
	64	if (q->available) {
65	frame = ff_bufqueue_peek(q, 0);
66	if (frame->pts < pts_min) {
67	pts_min = frame->pts;
68	queue_idx = i;
69	}
70	}
71	}
72
73	/* all inputs are closed */
74	if (queue_idx < 0)
75	return AVERROR_EOF;
76
77	frame = ff_bufqueue_get(&s->queues[queue_idx]);
78	av_log(ctx, AV_LOG_DEBUG, "queue:%d -> frame time:%f\n",
79	queue_idx, frame->pts * av_q2d(AV_TIME_BASE_Q));
80	return ff_filter_frame(ctx->outputs[0], frame);
81	}
82
83	static int filter_frame(AVFilterLink inlink, AVFrame frame)
84	{
85	AVFilterContext *ctx = inlink->dst;
86	InterleaveContext *s = ctx->priv;
87	unsigned in_no = FF_INLINK_IDX(inlink);
88
89	if (frame->pts == AV_NOPTS_VALUE) {
90	av_log(ctx, AV_LOG_WARNING,
91	"NOPTS value for input frame cannot be accepted, frame discarded\n");
92	av_frame_free(&frame);
93	return AVERROR_INVALIDDATA;
94	}
95
96	/* queue frame */
97	frame->pts = av_rescale_q(frame->pts, inlink->time_base, AV_TIME_BASE_Q);
98	av_log(ctx, AV_LOG_DEBUG, "frame pts:%f -> queue idx:%d available:%d\n",
99	frame->pts * av_q2d(AV_TIME_BASE_Q), in_no, s->queues[in_no].available);
100	ff_bufqueue_add(ctx, &s->queues[in_no], frame);
101
102	return push_frame(ctx);
103	}
104
105	static av_cold int init(AVFilterContext *ctx)
106	{
107	InterleaveContext *s = ctx->priv;
108	const AVFilterPad *outpad = &ctx->filter->outputs[0];
109	int i;
110
111	s->queues = av_calloc(s->nb_inputs, sizeof(s->queues[0]));
112	if (!s->queues)
113	return AVERROR(ENOMEM);
114
115	for (i = 0; i < s->nb_inputs; i++) {
116	AVFilterPad inpad = { 0 };
117
118	inpad.name = av_asprintf("input%d", i);
119	if (!inpad.name)
120	return AVERROR(ENOMEM);
121	inpad.type = outpad->type;
122	inpad.filter_frame = filter_frame;
123
124	switch (outpad->type) {
125	case AVMEDIA_TYPE_VIDEO:
126	inpad.get_video_buffer = ff_null_get_video_buffer; break;
127	case AVMEDIA_TYPE_AUDIO:
128	inpad.get_audio_buffer = ff_null_get_audio_buffer; break;
129	default:
130	av_assert0(0);
131	}
132	ff_insert_inpad(ctx, i, &inpad);
133	}
134
135	return 0;
136	}
137
138	static av_cold void uninit(AVFilterContext *ctx)
139	{
140	InterleaveContext *s = ctx->priv;
141	int i;
142
143	for (i = 0; i < ctx->nb_inputs; i++) {
144	ff_bufqueue_discard_all(&s->queues[i]);
145	av_freep(&s->queues[i]);
146	av_freep(&ctx->input_pads[i].name);
147	}
148	}
149
150	static int config_output(AVFilterLink *outlink)
151	{
152	AVFilterContext *ctx = outlink->src;
153	AVFilterLink *inlink0 = ctx->inputs[0];
154	int i;
155
156	if (outlink->type == AVMEDIA_TYPE_VIDEO) {
157	outlink->time_base = AV_TIME_BASE_Q;
158	outlink->w = inlink0->w;
159	outlink->h = inlink0->h;
160	outlink->sample_aspect_ratio = inlink0->sample_aspect_ratio;
161	outlink->format = inlink0->format;
162	outlink->frame_rate = (AVRational) {1, 0};
163	for (i = 1; i < ctx->nb_inputs; i++) {
164	AVFilterLink *inlink = ctx->inputs[i];
165
166	if (outlink->w != inlink->w \|\|
167	outlink->h != inlink->h \|\|
168	outlink->sample_aspect_ratio.num != inlink->sample_aspect_ratio.num \|\|
169	outlink->sample_aspect_ratio.den != inlink->sample_aspect_ratio.den) {
170	av_log(ctx, AV_LOG_ERROR, "Parameters for input link %s "
171	"(size %dx%d, SAR %d:%d) do not match the corresponding "
172	"output link parameters (%dx%d, SAR %d:%d)\n",
173	ctx->input_pads[i].name, inlink->w, inlink->h,
174	inlink->sample_aspect_ratio.num,
175	inlink->sample_aspect_ratio.den,
176	outlink->w, outlink->h,
177	outlink->sample_aspect_ratio.num,
178	outlink->sample_aspect_ratio.den);
179	return AVERROR(EINVAL);
180	}
181	}
182	}
183
184	outlink->flags \|= FF_LINK_FLAG_REQUEST_LOOP;
185	return 0;
186	}
187
188	static int request_frame(AVFilterLink *outlink)
189	{
190	AVFilterContext *ctx = outlink->src;
191	InterleaveContext *s = ctx->priv;
192	int i, ret;
193
194	for (i = 0; i < ctx->nb_inputs; i++) {
195	if (!s->queues[i].available && !ctx->inputs[i]->closed) {
196	ret = ff_request_frame(ctx->inputs[i]);
197	if (ret != AVERROR_EOF)
198	return ret;
199	}
200	}
201
202	return push_frame(ctx);
203	}
204
205	#if CONFIG_INTERLEAVE_FILTER
206
207	DEFINE_OPTIONS(interleave, AV_OPT_FLAG_VIDEO_PARAM\|AV_OPT_FLAG_FILTERING_PARAM);
208	AVFILTER_DEFINE_CLASS(interleave);
209
210	static const AVFilterPad interleave_outputs[] = {
211	{
212	.name = "default",
213	.type = AVMEDIA_TYPE_VIDEO,
214	.config_props = config_output,
215	.request_frame = request_frame,
216	},
217	{ NULL }
218	};
219
220	AVFilter ff_vf_interleave = {
221	.name = "interleave",
222	.description = NULL_IF_CONFIG_SMALL("Temporally interleave video inputs."),
223	.priv_size = sizeof(InterleaveContext),
224	.init = init,
225	.uninit = uninit,
226	.outputs = interleave_outputs,
227	.priv_class = &interleave_class,
228	.flags = AVFILTER_FLAG_DYNAMIC_INPUTS,
229	};
230
231	#endif
232
233	#if CONFIG_AINTERLEAVE_FILTER
234
235	DEFINE_OPTIONS(ainterleave, AV_OPT_FLAG_AUDIO_PARAM\|AV_OPT_FLAG_FILTERING_PARAM);
236	AVFILTER_DEFINE_CLASS(ainterleave);
237
238	static const AVFilterPad ainterleave_outputs[] = {
239	{
240	.name = "default",
241	.type = AVMEDIA_TYPE_AUDIO,
242	.config_props = config_output,
243	.request_frame = request_frame,
244	},
245	{ NULL }
246	};
247
248	AVFilter ff_af_ainterleave = {
249	.name = "ainterleave",
250	.description = NULL_IF_CONFIG_SMALL("Temporally interleave audio inputs."),
251	.priv_size = sizeof(InterleaveContext),
252	.init = init,
253	.uninit = uninit,
254	.outputs = ainterleave_outputs,
255	.priv_class = &ainterleave_class,
256	.flags = AVFILTER_FLAG_DYNAMIC_INPUTS,
257	};
258
259	#endif