mirror of
https://gitlab.freedesktop.org/gstreamer/gstreamer.git
synced 2024-11-27 20:21:24 +00:00
mpg123: cleaned up comments, formatting, and logging lines
also replaced mpg123decoder->handle != NULL checks with asserts https://bugzilla.gnome.org/show_bug.cgi?id=686595
This commit is contained in:
parent
264ec5c74b
commit
7a801e1022
1 changed files with 156 additions and 148 deletions
|
@ -28,8 +28,7 @@
|
|||
GST_DEBUG_CATEGORY_STATIC (mpg123_debug);
|
||||
#define GST_CAT_DEFAULT mpg123_debug
|
||||
|
||||
/*
|
||||
* Omitted sample formats that mpg123 supports (or at least can support):
|
||||
/* Omitted sample formats that mpg123 supports (or at least can support):
|
||||
* - 8bit integer signed
|
||||
* - 8bit integer unsigned
|
||||
* - a-law
|
||||
|
@ -46,10 +45,10 @@ GST_DEBUG_CATEGORY_STATIC (mpg123_debug);
|
|||
* no way how to find out which one of them is actually used.
|
||||
*
|
||||
* However, in all known installations, "real" equals 32bit float, so that's
|
||||
* what is used.
|
||||
*/
|
||||
* what is used. */
|
||||
|
||||
static GstStaticPadTemplate sink_template = GST_STATIC_PAD_TEMPLATE ("sink",
|
||||
static GstStaticPadTemplate static_sink_template =
|
||||
GST_STATIC_PAD_TEMPLATE ("sink",
|
||||
GST_PAD_SINK,
|
||||
GST_PAD_ALWAYS,
|
||||
GST_STATIC_CAPS ("audio/mpeg, "
|
||||
|
@ -66,9 +65,9 @@ static GstFlowReturn gst_mpg123_audio_dec_push_decoded_bytes (GstMpg123AudioDec
|
|||
* mpg123_decoder, unsigned char const *decoded_bytes,
|
||||
size_t const num_decoded_bytes);
|
||||
static GstFlowReturn gst_mpg123_audio_dec_handle_frame (GstAudioDecoder * dec,
|
||||
GstBuffer * buffer);
|
||||
GstBuffer * input_buffer);
|
||||
static gboolean gst_mpg123_audio_dec_set_format (GstAudioDecoder * dec,
|
||||
GstCaps * incoming_caps);
|
||||
GstCaps * input_caps);
|
||||
static void gst_mpg123_audio_dec_flush (GstAudioDecoder * dec, gboolean hard);
|
||||
|
||||
G_DEFINE_TYPE (GstMpg123AudioDec, gst_mpg123_audio_dec, GST_TYPE_AUDIO_DECODER);
|
||||
|
@ -79,7 +78,7 @@ gst_mpg123_audio_dec_class_init (GstMpg123AudioDecClass * klass)
|
|||
GObjectClass *object_class;
|
||||
GstAudioDecoderClass *base_class;
|
||||
GstElementClass *element_class;
|
||||
GstPadTemplate *src_template;
|
||||
GstPadTemplate *src_template, *sink_template;
|
||||
int error;
|
||||
|
||||
GST_DEBUG_CATEGORY_INIT (mpg123_debug, "mpg123", 0, "mpg123 mp3 decoder");
|
||||
|
@ -96,15 +95,14 @@ gst_mpg123_audio_dec_class_init (GstMpg123AudioDecClass * klass)
|
|||
"Decodes mp3 streams using the mpg123 library",
|
||||
"Carlos Rafael Giani <dv@pseudoterminal.org>");
|
||||
|
||||
/*
|
||||
Not using static pad template for srccaps, since the comma-separated list of formats needs to be
|
||||
created depending on whatever mpg123 supports
|
||||
*/
|
||||
/* Not using static pad template for srccaps, since the comma-separated list
|
||||
* of formats needs to be created depending on whatever mpg123 supports */
|
||||
{
|
||||
const int *format_list;
|
||||
const long *rates_list;
|
||||
size_t num, i;
|
||||
GString *s;
|
||||
GstCaps *src_template_caps;
|
||||
|
||||
s = g_string_new ("audio/x-raw, ");
|
||||
|
||||
|
@ -157,14 +155,16 @@ gst_mpg123_audio_dec_class_init (GstMpg123AudioDecClass * klass)
|
|||
g_string_append (s, "channels = (int) [ 1, 2 ], ");
|
||||
g_string_append (s, "layout = (string) interleaved");
|
||||
|
||||
src_template_caps = gst_caps_from_string (s->str);
|
||||
src_template = gst_pad_template_new ("src", GST_PAD_SRC, GST_PAD_ALWAYS,
|
||||
gst_caps_from_string (s->str));
|
||||
src_template_caps);
|
||||
|
||||
g_string_free (s, TRUE);
|
||||
}
|
||||
|
||||
gst_element_class_add_pad_template (element_class,
|
||||
gst_static_pad_template_get (&sink_template));
|
||||
sink_template = gst_static_pad_template_get (&static_sink_template);
|
||||
|
||||
gst_element_class_add_pad_template (element_class, sink_template);
|
||||
gst_element_class_add_pad_template (element_class, src_template);
|
||||
|
||||
base_class->start = GST_DEBUG_FUNCPTR (gst_mpg123_audio_dec_start);
|
||||
|
@ -179,7 +179,7 @@ gst_mpg123_audio_dec_class_init (GstMpg123AudioDecClass * klass)
|
|||
GST_ERROR ("Could not initialize mpg123 library: %s",
|
||||
mpg123_plain_strerror (error));
|
||||
else
|
||||
GST_TRACE ("mpg123 library initialized");
|
||||
GST_INFO ("mpg123 library initialized");
|
||||
}
|
||||
|
||||
|
||||
|
@ -214,30 +214,34 @@ gst_mpg123_audio_dec_start (GstAudioDecoder * dec)
|
|||
mpg123_decoder->has_next_audioinfo = FALSE;
|
||||
mpg123_decoder->frame_offset = 0;
|
||||
|
||||
/*
|
||||
Initially, the mpg123 handle comes with a set of default formats supported. This clears this set.
|
||||
This is necessary, since only one format shall be supported (see set_format for more).
|
||||
*/
|
||||
/* Initially, the mpg123 handle comes with a set of default formats
|
||||
* supported. This clears this set. This is necessary, since only one
|
||||
* format shall be supported (see set_format for more). */
|
||||
mpg123_format_none (mpg123_decoder->handle);
|
||||
|
||||
mpg123_param (mpg123_decoder->handle, MPG123_REMOVE_FLAGS, MPG123_GAPLESS, 0); /* Built-in mpg123 support for gapless decoding is disabled for now, since it does not work well with seeking */
|
||||
mpg123_param (mpg123_decoder->handle, MPG123_ADD_FLAGS, MPG123_SEEKBUFFER, 0); /* Tells mpg123 to use a small read-ahead buffer for better MPEG sync; essential for MP3 radio streams */
|
||||
mpg123_param (mpg123_decoder->handle, MPG123_RESYNC_LIMIT, -1, 0); /* Sets the resync limit to the end of the stream (e.g. don't give up prematurely) */
|
||||
/* Built-in mpg123 support for gapless decoding is disabled for now,
|
||||
* since it does not work well with seeking */
|
||||
mpg123_param (mpg123_decoder->handle, MPG123_REMOVE_FLAGS, MPG123_GAPLESS, 0);
|
||||
/* Tells mpg123 to use a small read-ahead buffer for better MPEG sync;
|
||||
* essential for MP3 radio streams */
|
||||
mpg123_param (mpg123_decoder->handle, MPG123_ADD_FLAGS, MPG123_SEEKBUFFER, 0);
|
||||
/* Sets the resync limit to the end of the stream (otherwise mpg123 may give
|
||||
* up on decoding prematurely, especially with mp3 web radios) */
|
||||
mpg123_param (mpg123_decoder->handle, MPG123_RESYNC_LIMIT, -1, 0);
|
||||
|
||||
/* Open in feed mode (= encoded data is fed manually into the handle). */
|
||||
error = mpg123_open_feed (mpg123_decoder->handle);
|
||||
|
||||
if (G_UNLIKELY (error != MPG123_OK)) {
|
||||
GstElement *element = GST_ELEMENT (dec);
|
||||
GST_ELEMENT_ERROR (element, STREAM, DECODE, (NULL),
|
||||
("Error opening mpg123 feed: %s", mpg123_plain_strerror (error)));
|
||||
GST_ELEMENT_ERROR (dec, LIBRARY, INIT, (NULL),
|
||||
("%s", mpg123_strerror (mpg123_decoder->handle)));
|
||||
mpg123_close (mpg123_decoder->handle);
|
||||
mpg123_delete (mpg123_decoder->handle);
|
||||
mpg123_decoder->handle = NULL;
|
||||
return FALSE;
|
||||
}
|
||||
|
||||
GST_DEBUG_OBJECT (dec, "mpg123 decoder started");
|
||||
GST_INFO_OBJECT (dec, "mpg123 decoder started");
|
||||
|
||||
return TRUE;
|
||||
}
|
||||
|
@ -254,7 +258,7 @@ gst_mpg123_audio_dec_stop (GstAudioDecoder * dec)
|
|||
mpg123_decoder->handle = NULL;
|
||||
}
|
||||
|
||||
GST_DEBUG_OBJECT (dec, "mpg123 decoder stopped");
|
||||
GST_INFO_OBJECT (dec, "mpg123 decoder stopped");
|
||||
|
||||
return TRUE;
|
||||
}
|
||||
|
@ -265,39 +269,36 @@ gst_mpg123_audio_dec_push_decoded_bytes (GstMpg123AudioDec * mpg123_decoder,
|
|||
unsigned char const *decoded_bytes, size_t const num_decoded_bytes)
|
||||
{
|
||||
GstBuffer *output_buffer;
|
||||
GstFlowReturn alloc_error;
|
||||
GstAudioDecoder *dec;
|
||||
|
||||
output_buffer = NULL;
|
||||
dec = GST_AUDIO_DECODER (mpg123_decoder);
|
||||
|
||||
if ((num_decoded_bytes == 0) || (decoded_bytes == NULL)) {
|
||||
/* This occurs in the first few frames, which do not carry data; once MPG123_AUDIO_DEC_NEW_FORMAT is received, the empty frames stop occurring */
|
||||
GST_TRACE_OBJECT (mpg123_decoder,
|
||||
"Nothing was decoded -> no output buffer to push");
|
||||
/* This occurs in the first few frames, which do not carry data; once
|
||||
* MPG123_AUDIO_DEC_NEW_FORMAT is received, the empty frames stop occurring */
|
||||
GST_DEBUG_OBJECT (mpg123_decoder,
|
||||
"cannot decode yet, need more data -> no output buffer to push");
|
||||
return GST_FLOW_OK;
|
||||
}
|
||||
|
||||
output_buffer = gst_buffer_new_allocate (NULL, num_decoded_bytes, NULL);
|
||||
alloc_error = (output_buffer == NULL) ? GST_FLOW_ERROR : GST_FLOW_OK;
|
||||
|
||||
if (alloc_error != GST_FLOW_OK) {
|
||||
/* This is necessary to advance playback in time, even when nothing was decoded. */
|
||||
if (output_buffer == NULL) {
|
||||
/* This is necessary to advance playback in time,
|
||||
* even when nothing was decoded. */
|
||||
return gst_audio_decoder_finish_frame (dec, NULL, 1);
|
||||
} else {
|
||||
GstMapInfo info;
|
||||
|
||||
if (gst_buffer_map (output_buffer, &info, GST_MAP_WRITE)) {
|
||||
if (info.size != num_decoded_bytes)
|
||||
GST_ERROR_OBJECT (mpg123_decoder,
|
||||
"Mapped memory region has size %u instead of expected size %u",
|
||||
info.size, num_decoded_bytes);
|
||||
else
|
||||
memcpy (info.data, decoded_bytes, num_decoded_bytes);
|
||||
|
||||
memcpy (info.data, decoded_bytes, num_decoded_bytes);
|
||||
gst_buffer_unmap (output_buffer, &info);
|
||||
} else
|
||||
GST_ERROR_OBJECT (mpg123_decoder, "Could not map buffer");
|
||||
} else {
|
||||
GST_ERROR_OBJECT (mpg123_decoder, "gst_buffer_map() returned NULL");
|
||||
gst_buffer_unref (output_buffer);
|
||||
output_buffer = NULL;
|
||||
}
|
||||
|
||||
return gst_audio_decoder_finish_frame (dec, output_buffer, 1);
|
||||
}
|
||||
|
@ -305,78 +306,66 @@ gst_mpg123_audio_dec_push_decoded_bytes (GstMpg123AudioDec * mpg123_decoder,
|
|||
|
||||
|
||||
static GstFlowReturn
|
||||
gst_mpg123_audio_dec_handle_frame (GstAudioDecoder * dec, GstBuffer * buffer)
|
||||
gst_mpg123_audio_dec_handle_frame (GstAudioDecoder * dec,
|
||||
GstBuffer * input_buffer)
|
||||
{
|
||||
GstMpg123AudioDec *mpg123_decoder;
|
||||
int decode_error;
|
||||
unsigned char *decoded_bytes;
|
||||
size_t num_decoded_bytes;
|
||||
GstFlowReturn retval;
|
||||
|
||||
if (G_UNLIKELY (!buffer))
|
||||
if (G_UNLIKELY (input_buffer == NULL))
|
||||
return GST_FLOW_OK;
|
||||
|
||||
mpg123_decoder = GST_MPG123_AUDIO_DEC (dec);
|
||||
|
||||
if (G_UNLIKELY (mpg123_decoder->handle == NULL)) {
|
||||
GstElement *element = GST_ELEMENT (dec);
|
||||
GST_ELEMENT_ERROR (element, STREAM, DECODE, (NULL),
|
||||
("mpg123 handle is NULL"));
|
||||
return GST_FLOW_ERROR;
|
||||
}
|
||||
g_assert (mpg123_decoder->handle != NULL);
|
||||
|
||||
/* The actual decoding */
|
||||
{
|
||||
unsigned char const *inmemory;
|
||||
size_t inmemsize;
|
||||
GstMemory *memory;
|
||||
GstMapInfo info;
|
||||
|
||||
memory = gst_buffer_get_all_memory (buffer);
|
||||
if (memory == NULL)
|
||||
return GST_FLOW_ERROR;
|
||||
|
||||
if (!gst_memory_map (memory, &info, GST_MAP_READ)) {
|
||||
gst_memory_unref (memory);
|
||||
/* feed input data */
|
||||
if (gst_buffer_map (input_buffer, &info, GST_MAP_READ)) {
|
||||
mpg123_feed (mpg123_decoder->handle, info.data, info.size);
|
||||
gst_buffer_unmap (input_buffer, &info);
|
||||
} else {
|
||||
GST_ERROR_OBJECT (mpg123_decoder, "gst_memory_map() failed");
|
||||
return GST_FLOW_ERROR;
|
||||
}
|
||||
|
||||
inmemory = info.data;
|
||||
inmemsize = info.size;
|
||||
|
||||
mpg123_feed (mpg123_decoder->handle, inmemory, inmemsize);
|
||||
/* Try to decode a frame */
|
||||
decoded_bytes = NULL;
|
||||
num_decoded_bytes = 0;
|
||||
decode_error = mpg123_decode_frame (mpg123_decoder->handle,
|
||||
&mpg123_decoder->frame_offset, &decoded_bytes, &num_decoded_bytes);
|
||||
|
||||
gst_memory_unmap (memory, &info);
|
||||
gst_memory_unref (memory);
|
||||
}
|
||||
|
||||
retval = GST_FLOW_OK;
|
||||
|
||||
switch (decode_error) {
|
||||
case MPG123_NEW_FORMAT:
|
||||
/*
|
||||
As mentioned in gst_mpg123_audio_dec_set_format(), the next audioinfo is not set immediately;
|
||||
instead, the code waits for mpg123 to take note of the new format, and then sets the audioinfo
|
||||
This fixes glitches with mp3s containing several format headers (for example, first half using 44.1kHz, second half 32 kHz)
|
||||
*/
|
||||
/* As mentioned in gst_mpg123_audio_dec_set_format(), the next audioinfo
|
||||
* is not set immediately; instead, the code waits for mpg123 to take
|
||||
* note of the new format, and then sets the audioinfo. This fixes glitches
|
||||
* with mp3s containing several format headers (for example, first half
|
||||
* using 44.1kHz, second half 32 kHz) */
|
||||
|
||||
GST_DEBUG_OBJECT (dec,
|
||||
GST_LOG_OBJECT (dec,
|
||||
"mpg123 reported a new format -> setting next srccaps");
|
||||
|
||||
gst_mpg123_audio_dec_push_decoded_bytes (mpg123_decoder, decoded_bytes,
|
||||
num_decoded_bytes);
|
||||
|
||||
/*
|
||||
If there is a next audioinfo, use it, then set has_next_audioinfo to FALSE, to make sure
|
||||
gst_audio_decoder_set_output_format() isn't called again until set_format is called by the base class
|
||||
*/
|
||||
/* If there is a next audioinfo, use it, then set has_next_audioinfo to
|
||||
* FALSE, to make sure gst_audio_decoder_set_output_format() isn't called
|
||||
* again until set_format is called by the base class */
|
||||
if (mpg123_decoder->has_next_audioinfo) {
|
||||
if (!gst_audio_decoder_set_output_format (dec,
|
||||
&(mpg123_decoder->next_audioinfo))) {
|
||||
GstElement *element = GST_ELEMENT (dec);
|
||||
GST_ELEMENT_ERROR (element, STREAM, DECODE, (NULL),
|
||||
("Unable to set output format"));
|
||||
GST_WARNING_OBJECT (dec, "Unable to set output format");
|
||||
retval = GST_FLOW_NOT_NEGOTIATED;
|
||||
}
|
||||
mpg123_decoder->has_next_audioinfo = FALSE;
|
||||
}
|
||||
|
@ -385,61 +374,91 @@ gst_mpg123_audio_dec_handle_frame (GstAudioDecoder * dec, GstBuffer * buffer)
|
|||
|
||||
case MPG123_NEED_MORE:
|
||||
case MPG123_OK:
|
||||
return gst_mpg123_audio_dec_push_decoded_bytes (mpg123_decoder,
|
||||
retval = gst_mpg123_audio_dec_push_decoded_bytes (mpg123_decoder,
|
||||
decoded_bytes, num_decoded_bytes);
|
||||
break;
|
||||
|
||||
/* If this happens, then the upstream parser somehow missed the ending of the bitstream */
|
||||
case MPG123_DONE:
|
||||
GST_DEBUG_OBJECT (dec, "mpg123 is done decoding");
|
||||
/* If this happens, then the upstream parser somehow missed the ending
|
||||
* of the bitstream */
|
||||
GST_LOG_OBJECT (dec, "mpg123 is done decoding");
|
||||
gst_mpg123_audio_dec_push_decoded_bytes (mpg123_decoder, decoded_bytes,
|
||||
num_decoded_bytes);
|
||||
return GST_FLOW_EOS;
|
||||
retval = GST_FLOW_EOS;
|
||||
break;
|
||||
|
||||
/* Anything else is considered an error */
|
||||
default:
|
||||
{
|
||||
GstElement *element = GST_ELEMENT (dec);
|
||||
GST_ELEMENT_ERROR (element, STREAM, DECODE, (NULL), ("Decoding error: %s",
|
||||
mpg123_plain_strerror (decode_error)));
|
||||
/* Anything else is considered an error */
|
||||
int errcode;
|
||||
switch (decode_error) {
|
||||
case MPG123_ERR:
|
||||
errcode = mpg123_errcode (mpg123_decoder->handle);
|
||||
break;
|
||||
default:
|
||||
errcode = decode_error;
|
||||
}
|
||||
switch (errcode) {
|
||||
case MPG123_BAD_OUTFORMAT:{
|
||||
GstCaps *input_caps =
|
||||
gst_pad_get_current_caps (GST_AUDIO_DECODER_SINK_PAD (dec));
|
||||
GST_ELEMENT_ERROR (dec, STREAM, FORMAT, (NULL),
|
||||
("Output sample format could not be used when trying to decode frame. "
|
||||
"This is typically caused when the input caps (often the sample "
|
||||
"rate) do not match the actual format of the audio data. "
|
||||
"Input caps: %" GST_PTR_FORMAT, input_caps)
|
||||
);
|
||||
gst_caps_unref (input_caps);
|
||||
break;
|
||||
}
|
||||
default:{
|
||||
char const *errmsg = mpg123_plain_strerror (errcode);
|
||||
GST_ERROR_OBJECT (dec, "Reported error: %s", errmsg);
|
||||
}
|
||||
}
|
||||
|
||||
return GST_FLOW_ERROR;
|
||||
retval = GST_FLOW_ERROR;
|
||||
}
|
||||
}
|
||||
|
||||
return GST_FLOW_OK;
|
||||
return retval;
|
||||
}
|
||||
|
||||
|
||||
static gboolean
|
||||
gst_mpg123_audio_dec_set_format (GstAudioDecoder * dec, GstCaps * incoming_caps)
|
||||
gst_mpg123_audio_dec_set_format (GstAudioDecoder * dec, GstCaps * input_caps)
|
||||
{
|
||||
/*
|
||||
Using the parsed information upstream, and the list of allowed caps downstream, this code
|
||||
tries to find a suitable audio info. It is important to keep in mind that the rate and number of channels
|
||||
should never deviate from the one the bitstream has, otherwise mpg123 has to mix channels and/or
|
||||
resample (and as its docs say, its internal resampler is very crude). The sample format, however,
|
||||
can be chosen freely, because the MPEG specs do not mandate any special format.
|
||||
Therefore, rate and number of channels are taken from upstream (which parsed the MPEG frames, so
|
||||
the incoming_caps contain exactly the rate and number of channels the bitstream actually has), while
|
||||
the sample format is chosen by trying out all caps that are allowed by downstream. This way, the output
|
||||
is adjusted to what the downstream prefers.
|
||||
|
||||
Also, the new output audio info is not set immediately. Instead, it is considered the "next audioinfo".
|
||||
The code waits for mpg123 to notice the new format (= when mpg123_decode_frame() returns MPG123_AUDIO_DEC_NEW_FORMAT),
|
||||
and then sets the next audioinfo. Otherwise, the next audioinfo is set too soon, which may cause problems with
|
||||
mp3s containing several format headers. One example would be an mp3 with the first 30 seconds using 44.1 kHz,
|
||||
then the next 30 seconds using 32 kHz. Rare, but possible.
|
||||
|
||||
STEPS:
|
||||
|
||||
1. get rate and channels from incoming_caps
|
||||
2. get allowed caps from src pad
|
||||
3. for each structure in allowed caps:
|
||||
3.1. take format
|
||||
3.2. if the combination of format with rate and channels is unsupported by mpg123, go to (3),
|
||||
or exit with error if there are no more structures to try
|
||||
3.3. create next audioinfo out of rate,channels,format, and exit
|
||||
*/
|
||||
/* Using the parsed information upstream, and the list of allowed caps
|
||||
* downstream, this code tries to find a suitable audio info. It is important
|
||||
* to keep in mind that the rate and number of channels should never deviate
|
||||
* from the one the bitstream has, otherwise mpg123 has to mix channels and/or
|
||||
* resample (and as its docs say, its internal resampler is very crude). The
|
||||
* sample format, however, can be chosen freely, because the MPEG specs do not
|
||||
* mandate any special format. Therefore, rate and number of channels are taken
|
||||
* from upstream (which parsed the MPEG frames, so the input_caps contain
|
||||
* exactly the rate and number of channels the bitstream actually has), while
|
||||
* the sample format is chosen by trying out all caps that are allowed by
|
||||
* downstream. This way, the output is adjusted to what the downstream prefers.
|
||||
*
|
||||
* Also, the new output audio info is not set immediately. Instead, it is
|
||||
* considered the "next audioinfo". The code waits for mpg123 to notice the new
|
||||
* format (= when mpg123_decode_frame() returns MPG123_AUDIO_DEC_NEW_FORMAT),
|
||||
* and then sets the next audioinfo. Otherwise, the next audioinfo is set too
|
||||
* soon, which may cause problems with mp3s containing several format headers.
|
||||
* One example would be an mp3 with the first 30 seconds using 44.1 kHz, then
|
||||
* the next 30 seconds using 32 kHz. Rare, but possible.
|
||||
*
|
||||
* STEPS:
|
||||
*
|
||||
* 1. get rate and channels from input_caps
|
||||
* 2. get allowed caps from src pad
|
||||
* 3. for each structure in allowed caps:
|
||||
* 3.1. take format
|
||||
* 3.2. if the combination of format with rate and channels is unsupported by
|
||||
* mpg123, go to (3), or exit with error if there are no more structures
|
||||
* to try
|
||||
* 3.3. create next audioinfo out of rate,channels,format, and exit
|
||||
*/
|
||||
|
||||
|
||||
int rate, channels;
|
||||
|
@ -450,30 +469,26 @@ gst_mpg123_audio_dec_set_format (GstAudioDecoder * dec, GstCaps * incoming_caps)
|
|||
|
||||
mpg123_decoder = GST_MPG123_AUDIO_DEC (dec);
|
||||
|
||||
if (G_UNLIKELY (mpg123_decoder->handle == NULL)) {
|
||||
GstElement *element = GST_ELEMENT (dec);
|
||||
GST_ELEMENT_ERROR (element, STREAM, DECODE, (NULL),
|
||||
("mpg123 handle is NULL"));
|
||||
return FALSE;
|
||||
}
|
||||
g_assert (mpg123_decoder->handle != NULL);
|
||||
|
||||
mpg123_decoder->has_next_audioinfo = FALSE;
|
||||
|
||||
/* Get rate and channels from incoming_caps */
|
||||
/* Get rate and channels from input_caps */
|
||||
{
|
||||
GstStructure *structure;
|
||||
gboolean err = FALSE;
|
||||
|
||||
/* Only the first structure is used (multiple incoming structures don't make sense */
|
||||
structure = gst_caps_get_structure (incoming_caps, 0);
|
||||
/* Only the first structure is used (multiple
|
||||
* input caps structures don't make sense */
|
||||
structure = gst_caps_get_structure (input_caps, 0);
|
||||
|
||||
if (!gst_structure_get_int (structure, "rate", &rate)) {
|
||||
err = TRUE;
|
||||
GST_ERROR_OBJECT (dec, "Incoming caps do not have a rate value");
|
||||
GST_ERROR_OBJECT (dec, "Input caps do not have a rate value");
|
||||
}
|
||||
if (!gst_structure_get_int (structure, "channels", &channels)) {
|
||||
err = TRUE;
|
||||
GST_ERROR_OBJECT (dec, "Incoming caps do not have a channel value");
|
||||
GST_ERROR_OBJECT (dec, "Input caps do not have a channel value");
|
||||
}
|
||||
|
||||
if (err)
|
||||
|
@ -485,8 +500,6 @@ gst_mpg123_audio_dec_set_format (GstAudioDecoder * dec, GstCaps * incoming_caps)
|
|||
GstCaps *allowed_srccaps_unnorm =
|
||||
gst_pad_get_allowed_caps (GST_AUDIO_DECODER_SRC_PAD (dec));
|
||||
allowed_srccaps = gst_caps_normalize (allowed_srccaps_unnorm);
|
||||
/* TODO: this causes errors with 1.0 - perhaps a bug? */
|
||||
/*gst_caps_unref(allowed_srccaps_unnorm); */
|
||||
}
|
||||
|
||||
/* Go through all allowed caps, pick the first one that matches */
|
||||
|
@ -549,7 +562,7 @@ gst_mpg123_audio_dec_set_format (GstAudioDecoder * dec, GstCaps * incoming_caps)
|
|||
GST_DEBUG_OBJECT (dec,
|
||||
"mpg123 cannot use caps %" GST_PTR_FORMAT
|
||||
" because mpg123_format() failed: %s", structure,
|
||||
mpg123_plain_strerror (err));
|
||||
mpg123_strerror (mpg123_decoder->handle));
|
||||
continue;
|
||||
}
|
||||
}
|
||||
|
@ -557,7 +570,7 @@ gst_mpg123_audio_dec_set_format (GstAudioDecoder * dec, GstCaps * incoming_caps)
|
|||
gst_audio_info_init (&(mpg123_decoder->next_audioinfo));
|
||||
gst_audio_info_set_format (&(mpg123_decoder->next_audioinfo), format, rate,
|
||||
channels, NULL);
|
||||
GST_DEBUG_OBJECT (dec, "The next audio format is: %s, %u Hz, %u channels",
|
||||
GST_LOG_OBJECT (dec, "The next audio format is: %s, %u Hz, %u channels",
|
||||
format_str, rate, channels);
|
||||
mpg123_decoder->has_next_audioinfo = TRUE;
|
||||
|
||||
|
@ -580,25 +593,20 @@ gst_mpg123_audio_dec_flush (GstAudioDecoder * dec, gboolean hard)
|
|||
|
||||
hard = hard;
|
||||
|
||||
GST_DEBUG_OBJECT (dec, "Flushing decoder");
|
||||
GST_LOG_OBJECT (dec, "Flushing decoder");
|
||||
|
||||
mpg123_decoder = GST_MPG123_AUDIO_DEC (dec);
|
||||
|
||||
if (G_UNLIKELY (mpg123_decoder->handle == NULL)) {
|
||||
GstElement *element = GST_ELEMENT (dec);
|
||||
GST_ELEMENT_ERROR (element, STREAM, DECODE, (NULL),
|
||||
("mpg123 handle is NULL"));
|
||||
return;
|
||||
}
|
||||
g_assert (mpg123_decoder->handle != NULL);
|
||||
|
||||
/* Flush by reopening the feed */
|
||||
mpg123_close (mpg123_decoder->handle);
|
||||
error = mpg123_open_feed (mpg123_decoder->handle);
|
||||
|
||||
if (G_UNLIKELY (error != MPG123_OK)) {
|
||||
GstElement *element = GST_ELEMENT (dec);
|
||||
GST_ELEMENT_ERROR (element, STREAM, DECODE, (NULL),
|
||||
("Error reopening mpg123 feed: %s", mpg123_plain_strerror (error)));
|
||||
GST_ELEMENT_ERROR (dec, LIBRARY, INIT, (NULL),
|
||||
("Error while reopening mpg123 feed: %s",
|
||||
mpg123_plain_strerror (error)));
|
||||
mpg123_close (mpg123_decoder->handle);
|
||||
mpg123_delete (mpg123_decoder->handle);
|
||||
mpg123_decoder->handle = NULL;
|
||||
|
@ -606,10 +614,10 @@ gst_mpg123_audio_dec_flush (GstAudioDecoder * dec, gboolean hard)
|
|||
|
||||
mpg123_decoder->has_next_audioinfo = FALSE;
|
||||
|
||||
/*
|
||||
opening/closing feeds do not affect the format defined by the mpg123_format() call that was made in gst_mpg123_audio_dec_set_format(),
|
||||
and since the up/downstream caps are not expected to change here, no mpg123_format() calls are done
|
||||
*/
|
||||
/* opening/closing feeds do not affect the format defined by the
|
||||
* mpg123_format() call that was made in gst_mpg123_audio_dec_set_format(),
|
||||
* and since the up/downstream caps are not expected to change here, no
|
||||
* mpg123_format() calls are done */
|
||||
}
|
||||
|
||||
static gboolean
|
||||
|
|
Loading…
Reference in a new issue