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flvdemux: minor clean-up

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Use GstByteWriter, because we can, and g_value_take_boxed.
This commit is contained in:
Tim-Philipp Müller 2012-09-26 00:44:59 +01:00
parent 7d4b6f655e
commit c203ce2dbe
1 changed files with 35 additions and 50 deletions
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85
gst/flv/gstflvdemux.c
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@ -39,6 +39,7 @@
#include <string.h>
#include <gst/base/gstbytereader.h>
#include <gst/base/gstbytewriter.h>
#include <gst/pbutils/descriptions.h>
#include <gst/pbutils/pbutils.h>
#include <gst/audio/audio.h>
@ -717,72 +718,56 @@ gst_flv_demux_audio_negotiate (GstFlvDemux * demux, guint32 codec_tag,
{
GValue streamheader = G_VALUE_INIT;
GValue value = G_VALUE_INIT;
GstByteWriter w;
GstStructure *structure;
GstBuffer *buf;
guint8 *data, *mallocdata;
g_value_init (&streamheader, GST_TYPE_ARRAY);
caps = gst_caps_new_empty_simple ("audio/x-speex");
structure = gst_caps_get_structure (caps, 0);
data = mallocdata = g_malloc (80);
GST_DEBUG_OBJECT (demux, "generating speex header");
memcpy (data, "Speex ", 8);
data += 8;
memcpy (data, "1.1.12", 7);
data += 20;
GST_WRITE_UINT32_LE (data, 1); /* version */
data += 4;
GST_WRITE_UINT32_LE (data, 80); /* header_size */
data += 4;
GST_WRITE_UINT32_LE (data, 16000); /* rate */
data += 4;
GST_WRITE_UINT32_LE (data, 1); /* mode: Wideband */
data += 4;
GST_WRITE_UINT32_LE (data, 4); /* mode_bitstream_version */
data += 4;
GST_WRITE_UINT32_LE (data, 1); /* nb_channels: 1 */
data += 4;
GST_WRITE_UINT32_LE (data, -1); /* bitrate */
data += 4;
GST_WRITE_UINT32_LE (data, 0x50); /* frame_size */
data += 4;
GST_WRITE_UINT32_LE (data, 0); /* VBR */
data += 4;
GST_WRITE_UINT32_LE (data, 1); /* frames_per_packet */
data += 4;
GST_WRITE_UINT32_LE (data, 0); /* extra_headers */
data += 4;
GST_WRITE_UINT32_LE (data, 0); /* reserved1 */
data += 4;
GST_WRITE_UINT32_LE (data, 0); /* reserved2 */
/* Speex decoder expects streamheader to be { [header], [comment] } */
g_value_init (&streamheader, GST_TYPE_ARRAY);
buf = gst_buffer_new_wrapped (mallocdata, 80);
g_value_init (&value, GST_TYPE_BUFFER); /* Speex decoder expects it to be { [header], [comment] } */
gst_value_set_buffer (&value, buf); /* setting header part */
gst_value_array_append_value (&streamheader, &value);
g_value_unset (&value);
gst_buffer_unref (buf);
data = mallocdata = g_malloc (12); /* setting comment part */
memcpy (data, "No comments", 12);
/* header part */
gst_byte_writer_init_with_size (&w, 80, TRUE);
gst_byte_writer_put_data (&w, (guint8 *) "Speex ", 8);
gst_byte_writer_put_data (&w, (guint8 *) "1.1.12", 7);
gst_byte_writer_fill (&w, 0, 13);
gst_byte_writer_put_uint32_le (&w, 1); /* version */
gst_byte_writer_put_uint32_le (&w, 80); /* header_size */
gst_byte_writer_put_uint32_le (&w, 16000); /* rate */
gst_byte_writer_put_uint32_le (&w, 1); /* mode: Wideband */
gst_byte_writer_put_uint32_le (&w, 4); /* mode_bitstream_version */
gst_byte_writer_put_uint32_le (&w, 1); /* nb_channels: 1 */
gst_byte_writer_put_uint32_le (&w, -1); /* bitrate */
gst_byte_writer_put_uint32_le (&w, 0x50); /* frame_size */
gst_byte_writer_put_uint32_le (&w, 0); /* VBR */
gst_byte_writer_put_uint32_le (&w, 1); /* frames_per_packet */
gst_byte_writer_put_uint32_le (&w, 0); /* extra_headers */
gst_byte_writer_put_uint32_le (&w, 0); /* reserved1 */
gst_byte_writer_put_uint32_le (&w, 0); /* reserved2 */
g_assert (gst_byte_writer_get_size (&w) == 80);
g_value_init (&value, GST_TYPE_BUFFER);
buf = gst_buffer_new_wrapped (mallocdata, 12);
gst_value_set_buffer (&value, buf);
g_value_take_boxed (&value, gst_byte_writer_reset_and_get_buffer (&w));
gst_value_array_append_value (&streamheader, &value);
g_value_unset (&value);
gst_buffer_unref (buf);
gst_structure_set_value (structure, "streamheader", &streamheader);
}
/* comment part */
g_value_init (&value, GST_TYPE_BUFFER);
buf = gst_buffer_new_wrapped (g_memdup ("No comments", 12), 12);
g_value_take_boxed (&value, buf);
gst_value_array_append_value (&streamheader, &value);
g_value_unset (&value);
gst_structure_take_value (structure, "streamheader", &streamheader);
break;
}
default:
GST_WARNING_OBJECT (demux, "unsupported audio codec tag %u", codec_tag);
break;
}
if (G_UNLIKELY (!caps)) {