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flvdemux: fix speex audio decoding by creating fake stream header
https://bugzilla.gnome.org/show_bug.cgi?id=683622
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1 changed files with 65 additions and 0 deletions
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@ -714,7 +714,72 @@ gst_flv_demux_audio_negotiate (GstFlvDemux * demux, guint32 codec_tag,
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caps = gst_caps_new_empty_simple ("audio/x-mulaw");
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caps = gst_caps_new_empty_simple ("audio/x-mulaw");
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break;
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break;
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case 11:
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case 11:
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{
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GValue streamheader = G_VALUE_INIT;
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GValue value = G_VALUE_INIT;
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GstStructure *structure;
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GstBuffer *buf;
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guint8 *data, *mallocdata;
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g_value_init (&streamheader, GST_TYPE_ARRAY);
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caps = gst_caps_new_empty_simple ("audio/x-speex");
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caps = gst_caps_new_empty_simple ("audio/x-speex");
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structure = gst_caps_get_structure (caps, 0);
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data = mallocdata = g_malloc (80);
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GST_DEBUG_OBJECT (demux, "generating speex header");
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memcpy (data, "Speex ", 8);
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data += 8;
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memcpy (data, "1.1.12", 7);
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data += 20;
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GST_WRITE_UINT32_LE (data, 1); /* version */
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data += 4;
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GST_WRITE_UINT32_LE (data, 80); /* header_size */
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data += 4;
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GST_WRITE_UINT32_LE (data, 16000); /* rate */
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data += 4;
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GST_WRITE_UINT32_LE (data, 1); /* mode: Wideband */
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data += 4;
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GST_WRITE_UINT32_LE (data, 4); /* mode_bitstream_version */
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data += 4;
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GST_WRITE_UINT32_LE (data, 1); /* nb_channels: 1 */
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data += 4;
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GST_WRITE_UINT32_LE (data, -1); /* bitrate */
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data += 4;
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GST_WRITE_UINT32_LE (data, 0x50); /* frame_size */
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data += 4;
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GST_WRITE_UINT32_LE (data, 0); /* VBR */
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data += 4;
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GST_WRITE_UINT32_LE (data, 1); /* frames_per_packet */
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data += 4;
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GST_WRITE_UINT32_LE (data, 0); /* extra_headers */
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data += 4;
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GST_WRITE_UINT32_LE (data, 0); /* reserved1 */
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data += 4;
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GST_WRITE_UINT32_LE (data, 0); /* reserved2 */
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buf = gst_buffer_new_wrapped (mallocdata, 80);
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g_value_init (&value, GST_TYPE_BUFFER); /* Speex decoder expects it to be { [header], [comment] } */
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gst_value_set_buffer (&value, buf); /* setting header part */
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gst_value_array_append_value (&streamheader, &value);
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g_value_unset (&value);
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gst_buffer_unref (buf);
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data = mallocdata = g_malloc (12); /* setting comment part */
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memcpy (data, "No comments", 12);
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g_value_init (&value, GST_TYPE_BUFFER);
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buf = gst_buffer_new_wrapped (mallocdata, 12);
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gst_value_set_buffer (&value, buf);
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gst_value_array_append_value (&streamheader, &value);
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g_value_unset (&value);
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gst_buffer_unref (buf);
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gst_structure_set_value (structure, "streamheader", &streamheader);
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}
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break;
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break;
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default:
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default:
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GST_WARNING_OBJECT (demux, "unsupported audio codec tag %u", codec_tag);
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GST_WARNING_OBJECT (demux, "unsupported audio codec tag %u", codec_tag);
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