aboutsummaryrefslogtreecommitdiffstats
path: root/src/decoder/mp3_plugin.c
diff options
context:
space:
mode:
authorMax Kellermann <max@duempel.org>2008-10-29 16:14:08 +0100
committerMax Kellermann <max@duempel.org>2008-10-29 16:14:08 +0100
commit6158858f82843720544ee7d1b49fd2c75e0a6b1a (patch)
treed2f79953605a74e22ce710c2213448ca9e8d3f91 /src/decoder/mp3_plugin.c
parente0532ae0a85ef16d4ec2d701fb07ff2dcb7217d9 (diff)
downloadmpd-6158858f82843720544ee7d1b49fd2c75e0a6b1a.tar.gz
mpd-6158858f82843720544ee7d1b49fd2c75e0a6b1a.tar.xz
mpd-6158858f82843720544ee7d1b49fd2c75e0a6b1a.zip
mp3: moved code to mp3_synth_and_send()
Break the large function mp3_read() into smaller pieces.
Diffstat (limited to '')
-rw-r--r--src/decoder/mp3_plugin.c134
1 files changed, 74 insertions, 60 deletions
diff --git a/src/decoder/mp3_plugin.c b/src/decoder/mp3_plugin.c
index 8a1f87a31..72b03c8d8 100644
--- a/src/decoder/mp3_plugin.c
+++ b/src/decoder/mp3_plugin.c
@@ -912,12 +912,81 @@ mp3_send_pcm(struct mp3_data *data, unsigned i, unsigned pcm_length,
return DECODE_COMMAND_NONE;
}
+/**
+ * Synthesize the current frame and send it via decoder_data().
+ */
+static enum decoder_command
+mp3_synth_and_send(struct mp3_data *data, ReplayGainInfo *replay_gain_info)
+{
+ unsigned i, pcm_length;
+ enum decoder_command cmd;
+
+ mad_synth_frame(&data->synth, &data->frame);
+
+ if (!data->found_first_frame) {
+ unsigned int samples_per_frame = data->synth.pcm.length;
+ data->drop_start_frames = data->drop_start_samples / samples_per_frame;
+ data->drop_end_frames = data->drop_end_samples / samples_per_frame;
+ data->drop_start_samples = data->drop_start_samples % samples_per_frame;
+ data->drop_end_samples = data->drop_end_samples % samples_per_frame;
+ data->found_first_frame = true;
+ }
+
+ if (data->drop_start_frames > 0) {
+ data->drop_start_frames--;
+ return DECODE_COMMAND_NONE;
+ } else if ((data->drop_end_frames > 0) &&
+ (data->current_frame == (data->max_frames + 1 - data->drop_end_frames))) {
+ /* stop decoding, effectively dropping all remaining
+ frames */
+ return DECODE_COMMAND_STOP;
+ }
+
+ if (data->input_stream->meta_title) {
+ struct tag *tag = tag_new();
+ if (data->input_stream->meta_name) {
+ tag_add_item(tag, TAG_ITEM_NAME,
+ data->input_stream->meta_name);
+ }
+ tag_add_item(tag, TAG_ITEM_TITLE,
+ data->input_stream->meta_title);
+ free(data->input_stream->meta_title);
+ data->input_stream->meta_title = NULL;
+ tag_free(tag);
+ }
+
+ if (!data->decoded_first_frame) {
+ i = data->drop_start_samples;
+ data->decoded_first_frame = true;
+ } else
+ i = 0;
+
+ pcm_length = data->synth.pcm.length;
+ if (data->drop_end_samples &&
+ (data->current_frame == data->max_frames - data->drop_end_frames)) {
+ if (data->drop_end_samples >= pcm_length)
+ pcm_length = 0;
+ else
+ pcm_length -= data->drop_end_samples;
+ }
+
+ cmd = mp3_send_pcm(data, i, pcm_length, replay_gain_info);
+ if (cmd == DECODE_COMMAND_STOP)
+ return cmd;
+
+ if (data->drop_end_samples &&
+ (data->current_frame == data->max_frames - data->drop_end_frames))
+ /* stop decoding, effectively dropping
+ * all remaining samples */
+ return DECODE_COMMAND_STOP;
+
+ return DECODE_COMMAND_NONE;
+}
+
static enum mp3_action
mp3_read(struct mp3_data *data, ReplayGainInfo **replay_gain_info_r)
{
struct decoder *decoder = data->decoder;
- unsigned int pcm_length;
- unsigned int i;
int ret;
int skip;
enum decoder_command cmd;
@@ -936,67 +1005,12 @@ mp3_read(struct mp3_data *data, ReplayGainInfo **replay_gain_info_r)
}
break;
case MUTEFRAME_NONE:
- mad_synth_frame(&data->synth, &data->frame);
-
- if (!data->found_first_frame) {
- unsigned int samples_per_frame = (data->synth).pcm.length;
- data->drop_start_frames = data->drop_start_samples / samples_per_frame;
- data->drop_end_frames = data->drop_end_samples / samples_per_frame;
- data->drop_start_samples = data->drop_start_samples % samples_per_frame;
- data->drop_end_samples = data->drop_end_samples % samples_per_frame;
- data->found_first_frame = true;
- }
-
- if (data->drop_start_frames > 0) {
- data->drop_start_frames--;
- break;
- } else if ((data->drop_end_frames > 0) &&
- (data->current_frame == (data->max_frames + 1 - data->drop_end_frames))) {
- /* stop decoding, effectively dropping all remaining
- * frames */
- return DECODE_BREAK;
- }
-
- if (data->input_stream->meta_title) {
- struct tag *tag = tag_new();
- if (data->input_stream->meta_name) {
- tag_add_item(tag, TAG_ITEM_NAME,
- data->input_stream->meta_name);
- }
- tag_add_item(tag, TAG_ITEM_TITLE,
- data->input_stream->meta_title);
- free(data->input_stream->meta_title);
- data->input_stream->meta_title = NULL;
- tag_free(tag);
- }
-
- if (!data->decoded_first_frame) {
- i = data->drop_start_samples;
- data->decoded_first_frame = true;
- } else
- i = 0;
-
- pcm_length = data->synth.pcm.length;
- if (data->drop_end_samples &&
- (data->current_frame == data->max_frames - data->drop_end_frames)) {
- if (data->drop_end_samples >= pcm_length)
- pcm_length = 0;
- else
- pcm_length -= data->drop_end_samples;
- }
-
- cmd = mp3_send_pcm(data, i, pcm_length,
- replay_gain_info_r != NULL
- ? *replay_gain_info_r : NULL);
+ cmd = mp3_synth_and_send(data,
+ replay_gain_info_r != NULL
+ ? *replay_gain_info_r : NULL);
if (cmd == DECODE_COMMAND_STOP)
return DECODE_BREAK;
- if (data->drop_end_samples &&
- (data->current_frame == data->max_frames - data->drop_end_frames))
- /* stop decoding, effectively dropping
- * all remaining samples */
- return DECODE_BREAK;
-
if (decoder_get_command(decoder) == DECODE_COMMAND_SEEK) {
unsigned long j;