1 files changed, 121 insertions, 0 deletions
diff --git a/libavfilter/src_buffer.c b/libavfilter/src_buffer.c
new file mode 100644
index 0000000..354a516
--- /dev/null
+++ b/libavfilter/src_buffer.c
@@ -0,0 +1,121 @@
+/*
+ * Copyright (c) 2008 Vitor Sessak
+ * Copyright (c) 2010 S.N. Hemanth Meenakshisundaram
+ * Copyright (c) 2011 Mina Nagy Zaki
+ *
+ * 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
+ * memory buffer source filter
+ */
+
+#include "avfilter.h"
+#include "internal.h"
+#include "audio.h"
+#include "avcodec.h"
+#include "buffersrc.h"
+#include "asrc_abuffer.h"
+#include "libavutil/audioconvert.h"
+#include "libavutil/avstring.h"
+#include "libavutil/fifo.h"
+#include "libavutil/imgutils.h"
+
+typedef struct {
+    AVFifoBuffer     *fifo;
+    AVRational        time_base;     ///< time_base to set in the output link
+    int eof;
+    unsigned          nb_failed_requests;
+
+    /* Video only */
+    AVFilterContext  *scale;
+    int               h, w;
+    enum AVPixelFormat  pix_fmt;
+    AVRational        sample_aspect_ratio;
+    char              sws_param[256];
+
+    /* Audio only */
+    // Audio format of incoming buffers
+    int sample_rate;
+    unsigned int sample_format;
+    int64_t channel_layout;
+
+    // Normalization filters
+    AVFilterContext *aconvert;
+    AVFilterContext *aresample;
+} BufferSourceContext;
+
+static void buf_free(AVFilterBuffer *ptr)
+{
+    av_free(ptr);
+    return;
+}
+
+int av_asrc_buffer_add_audio_buffer_ref(AVFilterContext *ctx,
+                                        AVFilterBufferRef *samplesref,
+                                        int av_unused flags)
+{
+    return av_buffersrc_add_ref(ctx, samplesref, AV_BUFFERSRC_FLAG_NO_COPY);
+}
+
+int av_asrc_buffer_add_samples(AVFilterContext *ctx,
+                               uint8_t *data[8], int linesize[8],
+                               int nb_samples, int sample_rate,
+                               int sample_fmt, int64_t channel_layout, int planar,
+                               int64_t pts, int av_unused flags)
+{
+    AVFilterBufferRef *samplesref;
+
+    samplesref = avfilter_get_audio_buffer_ref_from_arrays(
+                     data, linesize[0], AV_PERM_WRITE,
+                     nb_samples,
+                     sample_fmt, channel_layout);
+    if (!samplesref)
+        return AVERROR(ENOMEM);
+
+    samplesref->buf->free  = buf_free;
+    samplesref->pts = pts;
+    samplesref->audio->sample_rate = sample_rate;
+
+    AV_NOWARN_DEPRECATED(
+    return av_asrc_buffer_add_audio_buffer_ref(ctx, samplesref, 0);
+    )
+}
+
+int av_asrc_buffer_add_buffer(AVFilterContext *ctx,
+                              uint8_t *buf, int buf_size, int sample_rate,
+                              int sample_fmt, int64_t channel_layout, int planar,
+                              int64_t pts, int av_unused flags)
+{
+    uint8_t *data[8] = {0};
+    int linesize[8];
+    int nb_channels = av_get_channel_layout_nb_channels(channel_layout),
+        nb_samples  = buf_size / nb_channels / av_get_bytes_per_sample(sample_fmt);
+
+    av_samples_fill_arrays(data, linesize,
+                           buf, nb_channels, nb_samples,
+                           sample_fmt, 16);
+
+    AV_NOWARN_DEPRECATED(
+    return av_asrc_buffer_add_samples(ctx,
+                                      data, linesize, nb_samples,
+                                      sample_rate,
+                                      sample_fmt, channel_layout, planar,
+                                      pts, flags);
+    )
+}