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<h3>
Tanu Kaskinen pushed to branch master
at <a href="https://gitlab.freedesktop.org/pulseaudio/pulseaudio">PulseAudio / pulseaudio</a>
</h3>
<h4>
Commits:
</h4>
<ul>
<li>
<strong><a href="https://gitlab.freedesktop.org/pulseaudio/pulseaudio/commit/73156649e76ac4000931990edcdcb3be31aade7b">73156649</a></strong>
<div>
<span>by Alexander E. Patrakov</span>
<i>at 2018-11-15T07:48:14Z</i>
</div>
<pre class="commit-message" style="white-space: pre-wrap; margin: 0;">resampler: Fix confusion between rear and side channels for 5.1 layouts
mpv and vlc play "normal" 5.1 AC3 and DTS files as if they had a
"5.1 (Side)" layout. Which is fine and consistent with ITU
recommendations if the user has a proper 7.1 system. But if the user
actually has a 5.1 system, PulseAudio will try to remap, poorly, between
the "5.1 (Side)" and "5.1" layouts, sending either an average between
front and rear channels, or an attenuated version of that average,
depending on the remixing-use-all-sink-channels setting.
This is not desired, the "Side" channels should be sent to "Rear", it is
only an unfortunate nomenclature confusion.
This patch does not fix 5.1 <-> 7.1 remixing.
Signed-off-by: Alexander E. Patrakov <patrakov@gmail.com>
</pre>
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<h4>1 changed file:</h4>
<ul>
<li class="file-stats">
<a href="#99be61fcd75963396c7c9ec9afb1676b2e8206a5">
src/pulsecore/resampler.c
</a>
</li>
</ul>
<h4>Changes:</h4>
<li id="99be61fcd75963396c7c9ec9afb1676b2e8206a5">
<a href="https://gitlab.freedesktop.org/pulseaudio/pulseaudio/commit/73156649e76ac4000931990edcdcb3be31aade7b#99be61fcd75963396c7c9ec9afb1676b2e8206a5"><strong>src/pulsecore/resampler.c</strong></a>
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<td class="diff-line-num unfold js-unfold old_line" data-linenumber="914" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">...</td>
<td class="diff-line-num unfold js-unfold new_line" data-linenumber="914" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">...</td>
<td class="line_content match " style="padding-left: 0.5em; padding-right: 0.5em; color: rgba(0,0,0,0.3);" bgcolor="#fafafa">@@ -914,6 +914,8 @@ static void setup_remap(const pa_resampler *r, pa_remap_t *m, bool *lfe_remixed)</td>
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914
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914
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<pre style="margin: 0;"> <span id="LC914" class="line" lang="c"><span class="cm" style="color: #998; font-style: italic;"> * The algorithm works basically like this:</span></span>
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<td class="diff-line-num old_line" data-linenumber="915" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">
915
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<td class="diff-line-num new_line" data-linenumber="915" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">
915
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<td class="line_content noteable_line" style="padding-left: 0.5em; padding-right: 0.5em;">
<pre style="margin: 0;"> <span id="LC915" class="line" lang="c"><span class="cm" style="color: #998; font-style: italic;"> *</span></span>
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916
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<td class="diff-line-num new_line" data-linenumber="916" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">
916
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<pre style="margin: 0;"> <span id="LC916" class="line" lang="c"><span class="cm" style="color: #998; font-style: italic;"> * 1) Connect all channels with matching names.</span></span>
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917
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<pre style="margin: 0;">+<span id="LC917" class="line" lang="c"><span class="cm" style="color: #998; font-style: italic;"> * This also includes fixing confusion between "5.1" and</span></span>
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<td class="diff-line-num new new_line" data-linenumber="918" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">
918
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<pre style="margin: 0;">+<span id="LC918" class="line" lang="c"><span class="cm" style="color: #998; font-style: italic;"> * "5.1 (Side)" layouts, done by mpv.</span></span>
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917
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919
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<pre style="margin: 0;"> <span id="LC919" class="line" lang="c"><span class="cm" style="color: #998; font-style: italic;"> *</span></span>
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918
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920
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<pre style="margin: 0;"> <span id="LC920" class="line" lang="c"><span class="cm" style="color: #998; font-style: italic;"> * 2) Mono Handling:</span></span>
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919
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921
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<pre style="margin: 0;"> <span id="LC921" class="line" lang="c"><span class="cm" style="color: #998; font-style: italic;"> * S:Mono: See setup_oc_mono_map().</span></span>
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<td class="diff-line-num unfold js-unfold old_line" data-linenumber="1006" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">...</td>
<td class="diff-line-num unfold js-unfold new_line" data-linenumber="1008" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">...</td>
<td class="line_content match " style="padding-left: 0.5em; padding-right: 0.5em; color: rgba(0,0,0,0.3);" bgcolor="#fafafa">@@ -1006,6 +1008,26 @@ static void setup_remap(const pa_resampler *r, pa_remap_t *m, bool *lfe_remixed)</td>
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1006
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1008
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<pre style="margin: 0;"> <span id="LC1008" class="line" lang="c"> <span class="p">}</span></span>
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1007
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1009
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<pre style="margin: 0;"> <span id="LC1009" class="line" lang="c"> <span class="p">}</span></span>
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1008
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1010
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<pre style="margin: 0;"> <span id="LC1010" class="line" lang="c"></span>
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<td class="diff-line-num new new_line" data-linenumber="1011" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">
1011
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<pre style="margin: 0;">+<span id="LC1011" class="line" lang="c"> <span class="k" style="font-weight: 600;">if</span> <span class="p">(</span><span class="o" style="font-weight: 600;">!</span><span class="n" style="color: #333;">oc_connected</span><span class="p">)</span> <span class="p">{</span></span>
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<pre style="margin: 0;">+<span id="LC1012" class="line" lang="c"> <span class="cm" style="color: #998; font-style: italic;">/* Maybe it is due to 5.1 rear/side confustion? */</span></span>
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<td class="diff-line-num new new_line" data-linenumber="1013" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">
1013
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<pre style="margin: 0;">+<span id="LC1013" class="line" lang="c"> <span class="k" style="font-weight: 600;">for</span> <span class="p">(</span><span class="n" style="color: #333;">ic</span> <span class="o" style="font-weight: 600;">=</span> <span class="mi" style="color: #099;">0</span><span class="p">;</span> <span class="n" style="color: #333;">ic</span> <span class="o" style="font-weight: 600;"><</span> <span class="n" style="color: #333;">n_ic</span><span class="p">;</span> <span class="n" style="color: #333;">ic</span><span class="o" style="font-weight: 600;">++</span><span class="p">)</span> <span class="p">{</span></span>
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<td class="diff-line-num new new_line" data-linenumber="1014" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">
1014
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<pre style="margin: 0;">+<span id="LC1014" class="line" lang="c"> <span class="n" style="color: #333;">pa_channel_position_t</span> <span class="n" style="color: #333;">a</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">r</span><span class="o" style="font-weight: 600;">-></span><span class="n" style="color: #333;">i_cm</span><span class="p">.</span><span class="n" style="color: #333;">map</span><span class="p">[</span><span class="n" style="color: #333;">ic</span><span class="p">];</span></span>
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1015
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<pre style="margin: 0;">+<span id="LC1015" class="line" lang="c"> <span class="k" style="font-weight: 600;">if</span> <span class="p">(</span><span class="n" style="color: #333;">ic_connected</span><span class="p">[</span><span class="n" style="color: #333;">ic</span><span class="p">])</span></span>
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1016
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<pre style="margin: 0;">+<span id="LC1016" class="line" lang="c"> <span class="k" style="font-weight: 600;">continue</span><span class="p">;</span></span>
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1017
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<pre style="margin: 0;">+<span id="LC1017" class="line" lang="c"></span>
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<pre style="margin: 0;">+<span id="LC1018" class="line" lang="c"> <span class="k" style="font-weight: 600;">if</span> <span class="p">((</span><span class="n" style="color: #333;">a</span> <span class="o" style="font-weight: 600;">==</span> <span class="n" style="color: #333;">PA_CHANNEL_POSITION_REAR_LEFT</span> <span class="o" style="font-weight: 600;">&&</span> <span class="n" style="color: #333;">b</span> <span class="o" style="font-weight: 600;">==</span> <span class="n" style="color: #333;">PA_CHANNEL_POSITION_SIDE_LEFT</span><span class="p">)</span> <span class="o" style="font-weight: 600;">||</span></span>
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1019
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<pre style="margin: 0;">+<span id="LC1019" class="line" lang="c"> <span class="p">(</span><span class="n" style="color: #333;">a</span> <span class="o" style="font-weight: 600;">==</span> <span class="n" style="color: #333;">PA_CHANNEL_POSITION_SIDE_LEFT</span> <span class="o" style="font-weight: 600;">&&</span> <span class="n" style="color: #333;">b</span> <span class="o" style="font-weight: 600;">==</span> <span class="n" style="color: #333;">PA_CHANNEL_POSITION_REAR_LEFT</span><span class="p">)</span> <span class="o" style="font-weight: 600;">||</span></span>
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<td class="diff-line-num new new_line" data-linenumber="1020" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">
1020
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<pre style="margin: 0;">+<span id="LC1020" class="line" lang="c"> <span class="p">(</span><span class="n" style="color: #333;">a</span> <span class="o" style="font-weight: 600;">==</span> <span class="n" style="color: #333;">PA_CHANNEL_POSITION_REAR_RIGHT</span> <span class="o" style="font-weight: 600;">&&</span> <span class="n" style="color: #333;">b</span> <span class="o" style="font-weight: 600;">==</span> <span class="n" style="color: #333;">PA_CHANNEL_POSITION_SIDE_RIGHT</span><span class="p">)</span> <span class="o" style="font-weight: 600;">||</span></span>
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<td class="diff-line-num new new_line" data-linenumber="1021" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">
1021
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<pre style="margin: 0;">+<span id="LC1021" class="line" lang="c"> <span class="p">(</span><span class="n" style="color: #333;">a</span> <span class="o" style="font-weight: 600;">==</span> <span class="n" style="color: #333;">PA_CHANNEL_POSITION_SIDE_RIGHT</span> <span class="o" style="font-weight: 600;">&&</span> <span class="n" style="color: #333;">b</span> <span class="o" style="font-weight: 600;">==</span> <span class="n" style="color: #333;">PA_CHANNEL_POSITION_REAR_RIGHT</span><span class="p">))</span> <span class="p">{</span></span>
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<td class="diff-line-num new new_line" data-linenumber="1022" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">
1022
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<pre style="margin: 0;">+<span id="LC1022" class="line" lang="c"></span>
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<td class="diff-line-num new new_line" data-linenumber="1023" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">
1023
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<pre style="margin: 0;">+<span id="LC1023" class="line" lang="c"> <span class="n" style="color: #333;">m</span><span class="o" style="font-weight: 600;">-></span><span class="n" style="color: #333;">map_table_f</span><span class="p">[</span><span class="n" style="color: #333;">oc</span><span class="p">][</span><span class="n" style="color: #333;">ic</span><span class="p">]</span> <span class="o" style="font-weight: 600;">=</span> <span class="mi" style="color: #099;">1</span><span class="p">.</span><span class="mi" style="color: #099;">0</span><span class="n" style="color: #333;">f</span><span class="p">;</span></span>
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1024
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<pre style="margin: 0;">+<span id="LC1024" class="line" lang="c"></span>
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<td class="diff-line-num new new_line" data-linenumber="1025" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">
1025
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<pre style="margin: 0;">+<span id="LC1025" class="line" lang="c"> <span class="n" style="color: #333;">oc_connected</span> <span class="o" style="font-weight: 600;">=</span> <span class="nb" style="color: #0086b3;">true</span><span class="p">;</span></span>
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1026
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<pre style="margin: 0;">+<span id="LC1026" class="line" lang="c"> <span class="n" style="color: #333;">ic_connected</span><span class="p">[</span><span class="n" style="color: #333;">ic</span><span class="p">]</span> <span class="o" style="font-weight: 600;">=</span> <span class="nb" style="color: #0086b3;">true</span><span class="p">;</span></span>
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1027
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<pre style="margin: 0;">+<span id="LC1027" class="line" lang="c"> <span class="p">}</span></span>
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1028
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<pre style="margin: 0;">+<span id="LC1028" class="line" lang="c"> <span class="p">}</span></span>
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1029
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<pre style="margin: 0;">+<span id="LC1029" class="line" lang="c"> <span class="p">}</span></span>
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1030
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<pre style="margin: 0;">+<span id="LC1030" class="line" lang="c"></span>
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1009
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1031
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<pre style="margin: 0;"> <span id="LC1031" class="line" lang="c"> <span class="k" style="font-weight: 600;">if</span> <span class="p">(</span><span class="o" style="font-weight: 600;">!</span><span class="n" style="color: #333;">oc_connected</span><span class="p">)</span> <span class="p">{</span></span>
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1010
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1032
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<pre style="margin: 0;"> <span id="LC1032" class="line" lang="c"> <span class="cm" style="color: #998; font-style: italic;">/* Try to find matching input ports for this output port */</span></span>
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1011
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1033
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<pre style="margin: 0;"> <span id="LC1033" class="line" lang="c"></span>
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