cosmetics: Drop particularly redundant silly comments
[ffmpeg.git] / avconv_filter.c
index 4e5c1ec..aaf5851 100644 (file)
  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
  */
 
+#include <stdint.h>
+
 #include "avconv.h"
 
 #include "libavfilter/avfilter.h"
-#include "libavfilter/avfiltergraph.h"
+#include "libavfilter/buffersrc.h"
+
+#include "libavresample/avresample.h"
 
-#include "libavutil/audioconvert.h"
 #include "libavutil/avassert.h"
+#include "libavutil/avstring.h"
+#include "libavutil/channel_layout.h"
+#include "libavutil/display.h"
+#include "libavutil/opt.h"
 #include "libavutil/pixdesc.h"
 #include "libavutil/pixfmt.h"
 #include "libavutil/samplefmt.h"
 
-/**
- * Define a function for building a string containing a list of
- * allowed formats,
- */
-#define DEF_CHOOSE_FORMAT(type, var, supported_list, none, get_name, separator)\
+/* Define a function for building a string containing a list of
+ * allowed formats. */
+#define DEF_CHOOSE_FORMAT(type, var, supported_list, none, get_name)           \
 static char *choose_ ## var ## s(OutputStream *ost)                            \
 {                                                                              \
-    if (ost->st->codec->var != none) {                                         \
-        get_name(ost->st->codec->var);                                         \
+    if (ost->enc_ctx->var != none) {                                           \
+        get_name(ost->enc_ctx->var);                                           \
         return av_strdup(name);                                                \
-    } else if (ost->enc->supported_list) {                                     \
+    } else if (ost->enc && ost->enc->supported_list) {                         \
         const type *p;                                                         \
         AVIOContext *s = NULL;                                                 \
         uint8_t *ret;                                                          \
         int len;                                                               \
                                                                                \
         if (avio_open_dyn_buf(&s) < 0)                                         \
-            exit_program(1);                                                   \
+            exit(1);                                                           \
                                                                                \
         for (p = ost->enc->supported_list; *p != none; p++) {                  \
             get_name(*p);                                                      \
-            avio_printf(s, "%s" separator, name);                              \
+            avio_printf(s, "%s|", name);                                       \
         }                                                                      \
         len = avio_close_dyn_buf(s, &ret);                                     \
         ret[len - 1] = 0;                                                      \
@@ -59,48 +64,44 @@ static char *choose_ ## var ## s(OutputStream *ost)                            \
         return NULL;                                                           \
 }
 
-DEF_CHOOSE_FORMAT(enum PixelFormat, pix_fmt, pix_fmts, PIX_FMT_NONE,
-                  GET_PIX_FMT_NAME, ":")
+DEF_CHOOSE_FORMAT(enum AVPixelFormat, pix_fmt, pix_fmts, AV_PIX_FMT_NONE,
+                  GET_PIX_FMT_NAME)
 
 DEF_CHOOSE_FORMAT(enum AVSampleFormat, sample_fmt, sample_fmts,
-                  AV_SAMPLE_FMT_NONE, GET_SAMPLE_FMT_NAME, ",")
+                  AV_SAMPLE_FMT_NONE, GET_SAMPLE_FMT_NAME)
 
 DEF_CHOOSE_FORMAT(int, sample_rate, supported_samplerates, 0,
-                  GET_SAMPLE_RATE_NAME, ",")
+                  GET_SAMPLE_RATE_NAME)
 
 DEF_CHOOSE_FORMAT(uint64_t, channel_layout, channel_layouts, 0,
-                  GET_CH_LAYOUT_NAME, ",")
+                  GET_CH_LAYOUT_NAME)
 
 FilterGraph *init_simple_filtergraph(InputStream *ist, OutputStream *ost)
 {
     FilterGraph *fg = av_mallocz(sizeof(*fg));
 
     if (!fg)
-        exit_program(1);
+        exit(1);
     fg->index = nb_filtergraphs;
 
-    fg->outputs = grow_array(fg->outputs, sizeof(*fg->outputs), &fg->nb_outputs,
-                             fg->nb_outputs + 1);
+    GROW_ARRAY(fg->outputs, fg->nb_outputs);
     if (!(fg->outputs[0] = av_mallocz(sizeof(*fg->outputs[0]))))
-        exit_program(1);
+        exit(1);
     fg->outputs[0]->ost   = ost;
     fg->outputs[0]->graph = fg;
 
     ost->filter = fg->outputs[0];
 
-    fg->inputs = grow_array(fg->inputs, sizeof(*fg->inputs), &fg->nb_inputs,
-                            fg->nb_inputs + 1);
+    GROW_ARRAY(fg->inputs, fg->nb_inputs);
     if (!(fg->inputs[0] = av_mallocz(sizeof(*fg->inputs[0]))))
-        exit_program(1);
+        exit(1);
     fg->inputs[0]->ist   = ist;
     fg->inputs[0]->graph = fg;
 
-    ist->filters = grow_array(ist->filters, sizeof(*ist->filters),
-                              &ist->nb_filters, ist->nb_filters + 1);
+    GROW_ARRAY(ist->filters, ist->nb_filters);
     ist->filters[ist->nb_filters - 1] = fg->inputs[0];
 
-    filtergraphs = grow_array(filtergraphs, sizeof(*filtergraphs),
-                              &nb_filtergraphs, nb_filtergraphs + 1);
+    GROW_ARRAY(filtergraphs, nb_filtergraphs);
     filtergraphs[nb_filtergraphs - 1] = fg;
 
     return fg;
@@ -116,7 +117,7 @@ static void init_input_filter(FilterGraph *fg, AVFilterInOut *in)
     if (type != AVMEDIA_TYPE_VIDEO && type != AVMEDIA_TYPE_AUDIO) {
         av_log(NULL, AV_LOG_FATAL, "Only video and audio filters supported "
                "currently.\n");
-        exit_program(1);
+        exit(1);
     }
 
     if (in->name) {
@@ -128,7 +129,7 @@ static void init_input_filter(FilterGraph *fg, AVFilterInOut *in)
         if (file_idx < 0 || file_idx >= nb_input_files) {
             av_log(NULL, AV_LOG_FATAL, "Invalid file index %d in filtegraph description %s.\n",
                    file_idx, fg->graph_desc);
-            exit_program(1);
+            exit(1);
         }
         s = input_files[file_idx]->ctx;
 
@@ -143,21 +144,21 @@ static void init_input_filter(FilterGraph *fg, AVFilterInOut *in)
         if (!st) {
             av_log(NULL, AV_LOG_FATAL, "Stream specifier '%s' in filtergraph description %s "
                    "matches no streams.\n", p, fg->graph_desc);
-            exit_program(1);
+            exit(1);
         }
         ist = input_streams[input_files[file_idx]->ist_index + st->index];
     } else {
         /* find the first unused stream of corresponding type */
         for (i = 0; i < nb_input_streams; i++) {
             ist = input_streams[i];
-            if (ist->st->codec->codec_type == type && ist->discard)
+            if (ist->dec_ctx->codec_type == type && ist->discard)
                 break;
         }
         if (i == nb_input_streams) {
             av_log(NULL, AV_LOG_FATAL, "Cannot find a matching stream for "
-                   "unlabeled input pad %d on filter %s", in->pad_idx,
+                   "unlabeled input pad %d on filter %s\n", in->pad_idx,
                    in->filter_ctx->name);
-            exit_program(1);
+            exit(1);
         }
     }
     av_assert0(ist);
@@ -166,23 +167,134 @@ static void init_input_filter(FilterGraph *fg, AVFilterInOut *in)
     ist->decoding_needed = 1;
     ist->st->discard = AVDISCARD_NONE;
 
-    fg->inputs = grow_array(fg->inputs, sizeof(*fg->inputs),
-                            &fg->nb_inputs, fg->nb_inputs + 1);
+    GROW_ARRAY(fg->inputs, fg->nb_inputs);
     if (!(fg->inputs[fg->nb_inputs - 1] = av_mallocz(sizeof(*fg->inputs[0]))))
-        exit_program(1);
+        exit(1);
     fg->inputs[fg->nb_inputs - 1]->ist   = ist;
     fg->inputs[fg->nb_inputs - 1]->graph = fg;
 
-    ist->filters = grow_array(ist->filters, sizeof(*ist->filters),
-                              &ist->nb_filters, ist->nb_filters + 1);
+    GROW_ARRAY(ist->filters, ist->nb_filters);
     ist->filters[ist->nb_filters - 1] = fg->inputs[fg->nb_inputs - 1];
 }
 
+int init_complex_filtergraph(FilterGraph *fg)
+{
+    AVFilterInOut *inputs, *outputs, *cur;
+    AVFilterGraph *graph;
+    int ret = 0;
+
+    /* this graph is only used for determining the kinds of inputs
+     * and outputs we have, and is discarded on exit from this function */
+    graph = avfilter_graph_alloc();
+    if (!graph)
+        return AVERROR(ENOMEM);
+
+    ret = avfilter_graph_parse2(graph, fg->graph_desc, &inputs, &outputs);
+    if (ret < 0)
+        goto fail;
+
+    for (cur = inputs; cur; cur = cur->next)
+        init_input_filter(fg, cur);
+
+    for (cur = outputs; cur;) {
+        GROW_ARRAY(fg->outputs, fg->nb_outputs);
+        fg->outputs[fg->nb_outputs - 1] = av_mallocz(sizeof(*fg->outputs[0]));
+        if (!fg->outputs[fg->nb_outputs - 1])
+            exit(1);
+
+        fg->outputs[fg->nb_outputs - 1]->graph   = fg;
+        fg->outputs[fg->nb_outputs - 1]->out_tmp = cur;
+        fg->outputs[fg->nb_outputs - 1]->type    = avfilter_pad_get_type(cur->filter_ctx->output_pads,
+                                                                         cur->pad_idx);
+        cur = cur->next;
+        fg->outputs[fg->nb_outputs - 1]->out_tmp->next = NULL;
+    }
+
+fail:
+    avfilter_inout_free(&inputs);
+    avfilter_graph_free(&graph);
+    return ret;
+}
+
+static int insert_trim(int64_t start_time, int64_t duration,
+                       AVFilterContext **last_filter, int *pad_idx,
+                       const char *filter_name)
+{
+    AVFilterGraph *graph = (*last_filter)->graph;
+    AVFilterContext *ctx;
+    const AVFilter *trim;
+    enum AVMediaType type = avfilter_pad_get_type((*last_filter)->output_pads, *pad_idx);
+    const char *name = (type == AVMEDIA_TYPE_VIDEO) ? "trim" : "atrim";
+    int ret = 0;
+
+    if (duration == INT64_MAX && start_time == AV_NOPTS_VALUE)
+        return 0;
+
+    trim = avfilter_get_by_name(name);
+    if (!trim) {
+        av_log(NULL, AV_LOG_ERROR, "%s filter not present, cannot limit "
+               "recording time.\n", name);
+        return AVERROR_FILTER_NOT_FOUND;
+    }
+
+    ctx = avfilter_graph_alloc_filter(graph, trim, filter_name);
+    if (!ctx)
+        return AVERROR(ENOMEM);
+
+    if (duration != INT64_MAX) {
+        ret = av_opt_set_double(ctx, "duration", (double)duration / 1e6,
+                                AV_OPT_SEARCH_CHILDREN);
+    }
+    if (ret >= 0 && start_time != AV_NOPTS_VALUE) {
+        ret = av_opt_set_double(ctx, "start", (double)start_time / 1e6,
+                                AV_OPT_SEARCH_CHILDREN);
+    }
+    if (ret < 0) {
+        av_log(ctx, AV_LOG_ERROR, "Error configuring the %s filter", name);
+        return ret;
+    }
+
+    ret = avfilter_init_str(ctx, NULL);
+    if (ret < 0)
+        return ret;
+
+    ret = avfilter_link(*last_filter, *pad_idx, ctx, 0);
+    if (ret < 0)
+        return ret;
+
+    *last_filter = ctx;
+    *pad_idx     = 0;
+    return 0;
+}
+
+static int insert_filter(AVFilterContext **last_filter, int *pad_idx,
+                         const char *filter_name, const char *args)
+{
+    AVFilterGraph *graph = (*last_filter)->graph;
+    AVFilterContext *ctx;
+    int ret;
+
+    ret = avfilter_graph_create_filter(&ctx,
+                                       avfilter_get_by_name(filter_name),
+                                       filter_name, args, NULL, graph);
+    if (ret < 0)
+        return ret;
+
+    ret = avfilter_link(*last_filter, *pad_idx, ctx, 0);
+    if (ret < 0)
+        return ret;
+
+    *last_filter = ctx;
+    *pad_idx     = 0;
+    return 0;
+}
+
 static int configure_output_video_filter(FilterGraph *fg, OutputFilter *ofilter, AVFilterInOut *out)
 {
     char *pix_fmts;
     OutputStream *ost = ofilter->ost;
-    AVCodecContext *codec = ost->st->codec;
+    OutputFile    *of = output_files[ost->file_index];
+    AVCodecContext *codec = ost->enc_ctx;
     AVFilterContext *last_filter = out->filter_ctx;
     int pad_idx = out->pad_idx;
     int ret;
@@ -191,7 +303,7 @@ static int configure_output_video_filter(FilterGraph *fg, OutputFilter *ofilter,
     snprintf(name, sizeof(name), "output stream %d:%d", ost->file_index, ost->index);
     ret = avfilter_graph_create_filter(&ofilter->filter,
                                        avfilter_get_by_name("buffersink"),
-                                       name, NULL, pix_fmts, fg->graph);
+                                       name, NULL, NULL, fg->graph);
     if (ret < 0)
         return ret;
 
@@ -199,7 +311,7 @@ static int configure_output_video_filter(FilterGraph *fg, OutputFilter *ofilter,
         char args[255];
         AVFilterContext *filter;
 
-        snprintf(args, sizeof(args), "%d:%d:flags=0x%X",
+        snprintf(args, sizeof(args), "%d:%d:0x%X",
                  codec->width,
                  codec->height,
                  (unsigned)ost->sws_flags);
@@ -219,17 +331,17 @@ static int configure_output_video_filter(FilterGraph *fg, OutputFilter *ofilter,
         AVFilterContext *filter;
         snprintf(name, sizeof(name), "pixel format for output stream %d:%d",
                  ost->file_index, ost->index);
-        if ((ret = avfilter_graph_create_filter(&filter,
-                                                avfilter_get_by_name("format"),
-                                                "format", pix_fmts, NULL,
-                                                fg->graph)) < 0)
+        ret = avfilter_graph_create_filter(&filter,
+                                           avfilter_get_by_name("format"),
+                                           "format", pix_fmts, NULL, fg->graph);
+        av_freep(&pix_fmts);
+        if (ret < 0)
             return ret;
         if ((ret = avfilter_link(last_filter, pad_idx, filter, 0)) < 0)
             return ret;
 
         last_filter = filter;
         pad_idx     = 0;
-        av_freep(&pix_fmts);
     }
 
     if (ost->frame_rate.num) {
@@ -252,6 +364,14 @@ static int configure_output_video_filter(FilterGraph *fg, OutputFilter *ofilter,
         pad_idx = 0;
     }
 
+    snprintf(name, sizeof(name), "trim for output stream %d:%d",
+             ost->file_index, ost->index);
+    ret = insert_trim(of->start_time, of->recording_time,
+                      &last_filter, &pad_idx, name);
+    if (ret < 0)
+        return ret;
+
+
     if ((ret = avfilter_link(last_filter, pad_idx, ofilter->filter, 0)) < 0)
         return ret;
 
@@ -261,7 +381,8 @@ static int configure_output_video_filter(FilterGraph *fg, OutputFilter *ofilter,
 static int configure_output_audio_filter(FilterGraph *fg, OutputFilter *ofilter, AVFilterInOut *out)
 {
     OutputStream *ost = ofilter->ost;
-    AVCodecContext *codec  = ost->st->codec;
+    OutputFile    *of = output_files[ost->file_index];
+    AVCodecContext *codec  = ost->enc_ctx;
     AVFilterContext *last_filter = out->filter_ctx;
     int pad_idx = out->pad_idx;
     char *sample_fmts, *sample_rates, *channel_layouts;
@@ -318,6 +439,13 @@ static int configure_output_audio_filter(FilterGraph *fg, OutputFilter *ofilter,
         pad_idx = 0;
     }
 
+    snprintf(name, sizeof(name), "trim for output stream %d:%d",
+             ost->file_index, ost->index);
+    ret = insert_trim(of->start_time, of->recording_time,
+                      &last_filter, &pad_idx, name);
+    if (ret < 0)
+        return ret;
+
     if ((ret = avfilter_link(last_filter, pad_idx, ofilter->filter, 0)) < 0)
         return ret;
 
@@ -328,11 +456,11 @@ static int configure_output_audio_filter(FilterGraph *fg, OutputFilter *ofilter,
 {                                                                  \
     AVFilterContext *ctx = inout->filter_ctx;                      \
     AVFilterPad *pads = in ? ctx->input_pads  : ctx->output_pads;  \
-    int       nb_pads = in ? ctx->input_count : ctx->output_count; \
+    int       nb_pads = in ? ctx->nb_inputs   : ctx->nb_outputs;   \
     AVIOContext *pb;                                               \
                                                                    \
     if (avio_open_dyn_buf(&pb) < 0)                                \
-        exit_program(1);                                           \
+        exit(1);                                                   \
                                                                    \
     avio_printf(pb, "%s", ctx->filter->name);                      \
     if (nb_pads > 1)                                               \
@@ -356,29 +484,67 @@ int configure_output_filter(FilterGraph *fg, OutputFilter *ofilter, AVFilterInOu
 static int configure_input_video_filter(FilterGraph *fg, InputFilter *ifilter,
                                         AVFilterInOut *in)
 {
-    AVFilterContext *first_filter = in->filter_ctx;
-    AVFilter *filter = avfilter_get_by_name("buffer");
+    AVFilterContext *last_filter;
+    const AVFilter *buffer_filt = avfilter_get_by_name("buffer");
     InputStream *ist = ifilter->ist;
+    InputFile     *f = input_files[ist->file_index];
     AVRational tb = ist->framerate.num ? av_inv_q(ist->framerate) :
                                          ist->st->time_base;
-    AVRational sar;
-    char args[255], name[255];
-    int pad_idx = in->pad_idx;
-    int ret;
+    AVBufferSrcParameters *par;
+    char name[255];
+    int ret, pad_idx = 0;
 
-    sar = ist->st->sample_aspect_ratio.num ?
-          ist->st->sample_aspect_ratio :
-          ist->st->codec->sample_aspect_ratio;
-    snprintf(args, sizeof(args), "%d:%d:%d:%d:%d:%d:%d", ist->st->codec->width,
-             ist->st->codec->height, ist->st->codec->pix_fmt,
-             tb.num, tb.den, sar.num, sar.den);
     snprintf(name, sizeof(name), "graph %d input from stream %d:%d", fg->index,
              ist->file_index, ist->st->index);
 
-    if ((ret = avfilter_graph_create_filter(&ifilter->filter, filter, name,
-                                            args, NULL, fg->graph)) < 0)
+    ifilter->filter = avfilter_graph_alloc_filter(fg->graph, buffer_filt, name);
+    if (!ifilter->filter)
+        return AVERROR(ENOMEM);
+
+    par = av_buffersrc_parameters_alloc();
+    if (!par)
+        return AVERROR(ENOMEM);
+
+    par->sample_aspect_ratio = ist->st->sample_aspect_ratio.num ?
+                               ist->st->sample_aspect_ratio :
+                               ist->dec_ctx->sample_aspect_ratio;
+    par->width               = ist->dec_ctx->width;
+    par->height              = ist->dec_ctx->height;
+    par->format              = ist->hwaccel_retrieve_data ?
+                               ist->hwaccel_retrieved_pix_fmt : ist->dec_ctx->pix_fmt;
+    par->time_base           = tb;
+
+    ret = av_buffersrc_parameters_set(ifilter->filter, par);
+    av_freep(&par);
+    if (ret < 0)
+        return ret;
+
+    ret = avfilter_init_str(ifilter->filter, NULL);
+    if (ret < 0)
         return ret;
 
+    last_filter = ifilter->filter;
+
+    if (ist->autorotate) {
+        uint8_t* displaymatrix = av_stream_get_side_data(ist->st,
+                                                         AV_PKT_DATA_DISPLAYMATRIX, NULL);
+        if (displaymatrix) {
+            double rot = av_display_rotation_get((int32_t*) displaymatrix);
+            if (rot < -135 || rot > 135) {
+                ret = insert_filter(&last_filter, &pad_idx, "vflip", NULL);
+                if (ret < 0)
+                    return ret;
+                ret = insert_filter(&last_filter, &pad_idx, "hflip", NULL);
+            } else if (rot < -45) {
+                ret = insert_filter(&last_filter, &pad_idx, "transpose", "dir=clock");
+            } else if (rot > 45) {
+                ret = insert_filter(&last_filter, &pad_idx, "transpose", "dir=cclock");
+            }
+            if (ret < 0)
+                return ret;
+        }
+    }
+
     if (ist->framerate.num) {
         AVFilterContext *setpts;
 
@@ -390,14 +556,20 @@ static int configure_input_video_filter(FilterGraph *fg, InputFilter *ifilter,
                                                 fg->graph)) < 0)
             return ret;
 
-        if ((ret = avfilter_link(setpts, 0, first_filter, pad_idx)) < 0)
+        if ((ret = avfilter_link(last_filter, 0, setpts, 0)) < 0)
             return ret;
 
-        first_filter = setpts;
-        pad_idx = 0;
+        last_filter = setpts;
     }
 
-    if ((ret = avfilter_link(ifilter->filter, 0, first_filter, pad_idx)) < 0)
+    snprintf(name, sizeof(name), "trim for input stream %d:%d",
+             ist->file_index, ist->st->index);
+    ret = insert_trim(((f->start_time == AV_NOPTS_VALUE) || !f->accurate_seek) ?
+                      AV_NOPTS_VALUE : 0, f->recording_time, &last_filter, &pad_idx, name);
+    if (ret < 0)
+        return ret;
+
+    if ((ret = avfilter_link(last_filter, 0, in->filter_ctx, in->pad_idx)) < 0)
         return ret;
     return 0;
 }
@@ -405,30 +577,42 @@ static int configure_input_video_filter(FilterGraph *fg, InputFilter *ifilter,
 static int configure_input_audio_filter(FilterGraph *fg, InputFilter *ifilter,
                                         AVFilterInOut *in)
 {
-    AVFilterContext *first_filter = in->filter_ctx;
-    AVFilter *filter = avfilter_get_by_name("abuffer");
+    AVFilterContext *last_filter;
+    const AVFilter *abuffer_filt = avfilter_get_by_name("abuffer");
     InputStream *ist = ifilter->ist;
-    int pad_idx = in->pad_idx;
+    InputFile     *f = input_files[ist->file_index];
+    AVBufferSrcParameters *par;
     char args[255], name[255];
-    int ret;
+    int ret, pad_idx = 0;
 
-    snprintf(args, sizeof(args), "time_base=%d/%d:sample_rate=%d:sample_fmt=%s"
-             ":channel_layout=0x%"PRIx64,
-             1, ist->st->codec->sample_rate,
-             ist->st->codec->sample_rate,
-             av_get_sample_fmt_name(ist->st->codec->sample_fmt),
-             ist->st->codec->channel_layout);
     snprintf(name, sizeof(name), "graph %d input from stream %d:%d", fg->index,
              ist->file_index, ist->st->index);
 
-    if ((ret = avfilter_graph_create_filter(&ifilter->filter, filter,
-                                            name, args, NULL,
-                                            fg->graph)) < 0)
+    ifilter->filter = avfilter_graph_alloc_filter(fg->graph, abuffer_filt, name);
+    if (!ifilter->filter)
+        return AVERROR(ENOMEM);
+
+    par = av_buffersrc_parameters_alloc();
+    if (!par)
+        return AVERROR(ENOMEM);
+
+    par->time_base      = (AVRational){ 1, ist->dec_ctx->sample_rate };
+    par->sample_rate    = ist->dec_ctx->sample_rate;
+    par->format         = ist->dec_ctx->sample_fmt;
+    par->channel_layout = ist->dec_ctx->channel_layout;
+
+    ret = av_buffersrc_parameters_set(ifilter->filter, par);
+    av_freep(&par);
+    if (ret < 0)
         return ret;
 
+    ret = avfilter_init_str(ifilter->filter, NULL);
+    if (ret < 0)
+        return ret;
+    last_filter = ifilter->filter;
+
     if (audio_sync_method > 0) {
         AVFilterContext *async;
-        char args[256];
         int  len = 0;
 
         av_log(NULL, AV_LOG_WARNING, "-async has been deprecated. Used the "
@@ -448,14 +632,43 @@ static int configure_input_audio_filter(FilterGraph *fg, InputFilter *ifilter,
         if (ret < 0)
             return ret;
 
-        ret = avfilter_link(async, 0, first_filter, pad_idx);
+        ret = avfilter_link(last_filter, 0, async, 0);
         if (ret < 0)
             return ret;
 
-        first_filter = async;
-        pad_idx = 0;
+        last_filter = async;
     }
-    if ((ret = avfilter_link(ifilter->filter, 0, first_filter, pad_idx)) < 0)
+    if (audio_volume != 256) {
+        AVFilterContext *volume;
+
+        av_log(NULL, AV_LOG_WARNING, "-vol has been deprecated. Use the volume "
+               "audio filter instead.\n");
+
+        snprintf(args, sizeof(args), "volume=%f", audio_volume / 256.0);
+
+        snprintf(name, sizeof(name), "graph %d volume for input stream %d:%d",
+                 fg->index, ist->file_index, ist->st->index);
+        ret = avfilter_graph_create_filter(&volume,
+                                           avfilter_get_by_name("volume"),
+                                           name, args, NULL, fg->graph);
+        if (ret < 0)
+            return ret;
+
+        ret = avfilter_link(last_filter, 0, volume, 0);
+        if (ret < 0)
+            return ret;
+
+        last_filter = volume;
+    }
+
+    snprintf(name, sizeof(name), "trim for input stream %d:%d",
+             ist->file_index, ist->st->index);
+    ret = insert_trim(((f->start_time == AV_NOPTS_VALUE) || !f->accurate_seek) ?
+                      AV_NOPTS_VALUE : 0, f->recording_time, &last_filter, &pad_idx, name);
+    if (ret < 0)
+        return ret;
+
+    if ((ret = avfilter_link(last_filter, 0, in->filter_ctx, in->pad_idx)) < 0)
         return ret;
 
     return 0;
@@ -477,7 +690,7 @@ static int configure_input_filter(FilterGraph *fg, InputFilter *ifilter,
 int configure_filtergraph(FilterGraph *fg)
 {
     AVFilterInOut *inputs, *outputs, *cur;
-    int ret, i, init = !fg->graph, simple = !fg->graph_desc;
+    int ret, i, simple = !fg->graph_desc;
     const char *graph_desc = simple ? fg->outputs[0]->ost->avfilter :
                                       fg->graph_desc;
 
@@ -487,9 +700,20 @@ int configure_filtergraph(FilterGraph *fg)
 
     if (simple) {
         OutputStream *ost = fg->outputs[0]->ost;
-        char args[255];
+        char args[512];
+        AVDictionaryEntry *e = NULL;
+
         snprintf(args, sizeof(args), "flags=0x%X", (unsigned)ost->sws_flags);
         fg->graph->scale_sws_opts = av_strdup(args);
+
+        args[0] = '\0';
+        while ((e = av_dict_get(fg->outputs[0]->ost->resample_opts, "", e,
+                                AV_DICT_IGNORE_SUFFIX))) {
+            av_strlcatf(args, sizeof(args), "%s=%s:", e->key, e->value);
+        }
+        if (strlen(args))
+            args[strlen(args) - 1] = '\0';
+        fg->graph->resample_lavr_opts = av_strdup(args);
     }
 
     if ((ret = avfilter_graph_parse2(fg->graph, graph_desc, &inputs, &outputs)) < 0)
@@ -501,37 +725,22 @@ int configure_filtergraph(FilterGraph *fg)
         return AVERROR(EINVAL);
     }
 
-    for (cur = inputs; !simple && init && cur; cur = cur->next)
-        init_input_filter(fg, cur);
-
     for (cur = inputs, i = 0; cur; cur = cur->next, i++)
         if ((ret = configure_input_filter(fg, fg->inputs[i], cur)) < 0)
             return ret;
     avfilter_inout_free(&inputs);
 
-    if (!init || simple) {
-        /* we already know the mappings between lavfi outputs and output streams,
-         * so we can finish the setup */
-        for (cur = outputs, i = 0; cur; cur = cur->next, i++)
-            configure_output_filter(fg, fg->outputs[i], cur);
-        avfilter_inout_free(&outputs);
-
-        if ((ret = avfilter_graph_config(fg->graph, NULL)) < 0)
-            return ret;
-    } else {
-        /* wait until output mappings are processed */
-        for (cur = outputs; cur;) {
-            fg->outputs = grow_array(fg->outputs, sizeof(*fg->outputs),
-                                     &fg->nb_outputs, fg->nb_outputs + 1);
-            if (!(fg->outputs[fg->nb_outputs - 1] = av_mallocz(sizeof(*fg->outputs[0]))))
-                exit_program(1);
-            fg->outputs[fg->nb_outputs - 1]->graph   = fg;
-            fg->outputs[fg->nb_outputs - 1]->out_tmp = cur;
-            cur = cur->next;
-            fg->outputs[fg->nb_outputs - 1]->out_tmp->next = NULL;
-        }
+    for (cur = outputs, i = 0; cur; cur = cur->next, i++) {
+        OutputFilter *ofilter = fg->outputs[i];
+        if (ofilter->ost)
+            configure_output_filter(fg, ofilter, cur);
     }
 
+    avfilter_inout_free(&outputs);
+
+    if ((ret = avfilter_graph_config(fg->graph, NULL)) < 0)
+        return ret;
+
     return 0;
 }