diff options
Diffstat (limited to 'dom/media/MediaInfo.cpp')
| -rw-r--r-- | dom/media/MediaInfo.cpp | 194 |
1 files changed, 180 insertions, 14 deletions
diff --git a/dom/media/MediaInfo.cpp b/dom/media/MediaInfo.cpp index 568183e688..28b9e77828 100644 --- a/dom/media/MediaInfo.cpp +++ b/dom/media/MediaInfo.cpp @@ -35,69 +35,235 @@ typedef AudioConfig::ChannelLayout ChannelLayout; 3F4-LFE L R C LFE Rls Rrs LS RS */ +ChannelLayout ChannelLayout::LMONO{ AudioConfig::CHANNEL_FRONT_CENTER }; +ChannelLayout ChannelLayout::LMONO_LFE{ AudioConfig::CHANNEL_FRONT_CENTER, AudioConfig::CHANNEL_LFE }; +ChannelLayout ChannelLayout::LSTEREO{ AudioConfig::CHANNEL_FRONT_LEFT, AudioConfig::CHANNEL_FRONT_RIGHT }; +ChannelLayout ChannelLayout::LSTEREO_LFE{ AudioConfig::CHANNEL_FRONT_LEFT, + AudioConfig::CHANNEL_FRONT_RIGHT, + AudioConfig::CHANNEL_LFE }; +ChannelLayout ChannelLayout::L3F{ AudioConfig::CHANNEL_FRONT_LEFT, + AudioConfig::CHANNEL_FRONT_RIGHT, + AudioConfig::CHANNEL_FRONT_CENTER }; +ChannelLayout ChannelLayout::L3F_LFE{ AudioConfig::CHANNEL_FRONT_LEFT, + AudioConfig::CHANNEL_FRONT_RIGHT, + AudioConfig::CHANNEL_FRONT_CENTER, + AudioConfig::CHANNEL_LFE }; +ChannelLayout ChannelLayout::L2F1{ AudioConfig::CHANNEL_FRONT_LEFT, + AudioConfig::CHANNEL_FRONT_RIGHT, + AudioConfig::CHANNEL_BACK_CENTER }; +ChannelLayout ChannelLayout::L2F1_LFE{ AudioConfig::CHANNEL_FRONT_LEFT, + AudioConfig::CHANNEL_FRONT_RIGHT, + AudioConfig::CHANNEL_LFE, + AudioConfig::CHANNEL_BACK_CENTER }; +ChannelLayout ChannelLayout::L3F1{ AudioConfig::CHANNEL_FRONT_LEFT, + AudioConfig::CHANNEL_FRONT_RIGHT, + AudioConfig::CHANNEL_FRONT_CENTER, + AudioConfig::CHANNEL_BACK_CENTER }; +ChannelLayout ChannelLayout::LSURROUND = ChannelLayout::L3F1; +ChannelLayout ChannelLayout::L3F1_LFE{ AudioConfig::CHANNEL_FRONT_LEFT, + AudioConfig::CHANNEL_FRONT_RIGHT, + AudioConfig::CHANNEL_FRONT_CENTER, + AudioConfig::CHANNEL_LFE, + AudioConfig::CHANNEL_BACK_CENTER }; +ChannelLayout ChannelLayout::L2F2{ AudioConfig::CHANNEL_FRONT_LEFT, + AudioConfig::CHANNEL_FRONT_RIGHT, + AudioConfig::CHANNEL_SIDE_LEFT, + AudioConfig::CHANNEL_SIDE_RIGHT }; +ChannelLayout ChannelLayout::L2F2_LFE{ AudioConfig::CHANNEL_FRONT_LEFT, + AudioConfig::CHANNEL_FRONT_RIGHT, + AudioConfig::CHANNEL_LFE, + AudioConfig::CHANNEL_SIDE_LEFT, + AudioConfig::CHANNEL_SIDE_RIGHT }; +ChannelLayout ChannelLayout::LQUAD{ AudioConfig::CHANNEL_FRONT_LEFT, + AudioConfig::CHANNEL_FRONT_RIGHT, + AudioConfig::CHANNEL_BACK_LEFT, + AudioConfig::CHANNEL_BACK_RIGHT }; +ChannelLayout ChannelLayout::LQUAD_LFE{ AudioConfig::CHANNEL_FRONT_LEFT, + AudioConfig::CHANNEL_FRONT_RIGHT, + AudioConfig::CHANNEL_LFE, + AudioConfig::CHANNEL_BACK_LEFT, + AudioConfig::CHANNEL_BACK_RIGHT }; +ChannelLayout ChannelLayout::L3F2{ AudioConfig::CHANNEL_FRONT_LEFT, + AudioConfig::CHANNEL_FRONT_RIGHT, + AudioConfig::CHANNEL_FRONT_CENTER, + AudioConfig::CHANNEL_SIDE_LEFT, + AudioConfig::CHANNEL_SIDE_RIGHT }; +ChannelLayout ChannelLayout::L3F2_LFE{ AudioConfig::CHANNEL_FRONT_LEFT, + AudioConfig::CHANNEL_FRONT_RIGHT, + AudioConfig::CHANNEL_FRONT_CENTER, + AudioConfig::CHANNEL_LFE, + AudioConfig::CHANNEL_SIDE_LEFT, + AudioConfig::CHANNEL_SIDE_RIGHT }; +ChannelLayout ChannelLayout::L5POINT1_SURROUND = ChannelLayout::L3F2_LFE; + +ChannelLayout ChannelLayout::L3F3R_LFE{ AudioConfig::CHANNEL_FRONT_LEFT, + AudioConfig::CHANNEL_FRONT_RIGHT, + AudioConfig::CHANNEL_FRONT_CENTER, + AudioConfig::CHANNEL_LFE, + AudioConfig::CHANNEL_BACK_CENTER, + AudioConfig::CHANNEL_SIDE_LEFT, + AudioConfig::CHANNEL_SIDE_RIGHT }; +ChannelLayout ChannelLayout::L3F4_LFE{ AudioConfig::CHANNEL_FRONT_LEFT, + AudioConfig::CHANNEL_FRONT_RIGHT, + AudioConfig::CHANNEL_FRONT_CENTER, + AudioConfig::CHANNEL_LFE, + AudioConfig::CHANNEL_BACK_LEFT, + AudioConfig::CHANNEL_BACK_RIGHT, + AudioConfig::CHANNEL_SIDE_LEFT, + AudioConfig::CHANNEL_SIDE_RIGHT }; +ChannelLayout ChannelLayout::L7POINT1_SURROUND = ChannelLayout::L3F4_LFE; + void AudioConfig::ChannelLayout::UpdateChannelMap() { - mChannelMap = 0; mValid = mChannels.Length() <= MAX_AUDIO_CHANNELS; + mChannelMap = 0; + if (mValid) { + mChannelMap = Map(); + mValid = mChannelMap > 0; + } +} + +uint32_t +AudioConfig::ChannelLayout::Map() const +{ + if (mChannelMap) { + return mChannelMap; + } + uint32_t map = 0; for (size_t i = 0; i < mChannels.Length() && i <= MAX_AUDIO_CHANNELS; i++) { uint32_t mask = 1 << mChannels[i]; if (mChannels[i] == CHANNEL_INVALID || (mChannelMap & mask)) { - mValid = false; + // Invalid configuration. + return 0; } - mChannelMap |= mask; + map |= mask; } + return map; } -/* static */ const AudioConfig::Channel* -AudioConfig::ChannelLayout::SMPTEDefault(uint32_t aChannels) const +const AudioConfig::Channel* +AudioConfig::ChannelLayout::DefaultLayoutForChannels(uint32_t aChannels) const { switch (aChannels) { case 1: // MONO { - static const Channel config[] = { CHANNEL_MONO }; + static const Channel config[] = { CHANNEL_FRONT_CENTER }; return config; } case 2: // STEREO { - static const Channel config[] = { CHANNEL_LEFT, CHANNEL_RIGHT }; + static const Channel config[] = { CHANNEL_FRONT_LEFT, CHANNEL_FRONT_RIGHT }; return config; } case 3: // 3F { - static const Channel config[] = { CHANNEL_LEFT, CHANNEL_RIGHT, CHANNEL_CENTER }; + static const Channel config[] = { CHANNEL_FRONT_LEFT, CHANNEL_FRONT_RIGHT, CHANNEL_FRONT_CENTER }; return config; } - case 4: // 2F2 + case 4: // QUAD { - static const Channel config[] = { CHANNEL_LEFT, CHANNEL_RIGHT, CHANNEL_LS, CHANNEL_RS }; + static const Channel config[] = { CHANNEL_FRONT_LEFT, CHANNEL_FRONT_RIGHT, CHANNEL_BACK_LEFT, CHANNEL_BACK_RIGHT }; return config; } case 5: // 3F2 { - static const Channel config[] = { CHANNEL_LEFT, CHANNEL_RIGHT, CHANNEL_CENTER, CHANNEL_LS, CHANNEL_RS }; + static const Channel config[] = { CHANNEL_FRONT_LEFT, CHANNEL_FRONT_RIGHT, CHANNEL_FRONT_CENTER, CHANNEL_SIDE_LEFT, CHANNEL_SIDE_RIGHT }; return config; } case 6: // 3F2-LFE { - static const Channel config[] = { CHANNEL_LEFT, CHANNEL_RIGHT, CHANNEL_CENTER, CHANNEL_LFE, CHANNEL_LS, CHANNEL_RS }; + static const Channel config[] = { CHANNEL_FRONT_LEFT, CHANNEL_FRONT_RIGHT, CHANNEL_FRONT_CENTER, CHANNEL_LFE, CHANNEL_SIDE_LEFT, CHANNEL_SIDE_RIGHT }; return config; } case 7: // 3F3R-LFE { - static const Channel config[] = { CHANNEL_LEFT, CHANNEL_RIGHT, CHANNEL_CENTER, CHANNEL_LFE, CHANNEL_RCENTER, CHANNEL_LS, CHANNEL_RS }; + static const Channel config[] = { CHANNEL_FRONT_LEFT, CHANNEL_FRONT_RIGHT, CHANNEL_FRONT_CENTER, CHANNEL_LFE, CHANNEL_BACK_CENTER, CHANNEL_SIDE_LEFT, CHANNEL_SIDE_RIGHT }; return config; } case 8: // 3F4-LFE { - static const Channel config[] = { CHANNEL_LEFT, CHANNEL_RIGHT, CHANNEL_CENTER, CHANNEL_LFE, CHANNEL_RLS, CHANNEL_RRS, CHANNEL_LS, CHANNEL_RS }; + static const Channel config[] = { CHANNEL_FRONT_LEFT, CHANNEL_FRONT_RIGHT, CHANNEL_FRONT_CENTER, CHANNEL_LFE, CHANNEL_BACK_LEFT, CHANNEL_BACK_RIGHT, CHANNEL_SIDE_LEFT, CHANNEL_SIDE_RIGHT }; return config; } default: return nullptr; } + } +/* static */ AudioConfig::ChannelLayout +AudioConfig::ChannelLayout::SMPTEDefault( + const ChannelLayout& aChannelLayout) +{ + if (!aChannelLayout.IsValid()) { + return aChannelLayout; + } + return SMPTEDefault(aChannelLayout.Map()); +} + +/* static */ ChannelLayout +AudioConfig::ChannelLayout::SMPTEDefault(uint32_t aMap) +{ + MOZ_ASSERT(LMONO_MAP == LMONO.Map()); + MOZ_ASSERT(LMONO_LFE_MAP == LMONO_LFE.Map()); + MOZ_ASSERT(LSTEREO_MAP == LSTEREO.Map()); + MOZ_ASSERT(LSTEREO_LFE_MAP == LSTEREO_LFE.Map()); + MOZ_ASSERT(L3F_MAP == L3F.Map()); + MOZ_ASSERT(L3F_LFE_MAP == L3F_LFE.Map()); + MOZ_ASSERT(L2F1_MAP == L2F1.Map()); + MOZ_ASSERT(L2F1_LFE_MAP == L2F1_LFE.Map()); + MOZ_ASSERT(L3F1_MAP == L3F1.Map()); + MOZ_ASSERT(L3F1_LFE_MAP == L3F1_LFE.Map()); + MOZ_ASSERT(L2F2_MAP == L2F2.Map()); + MOZ_ASSERT(L2F2_LFE_MAP == L2F2_LFE.Map()); + MOZ_ASSERT(LQUAD_MAP == LQUAD.Map()); + MOZ_ASSERT(L3F2_MAP == L3F2.Map()); + MOZ_ASSERT(L3F2_LFE_MAP == L3F2_LFE.Map()); + MOZ_ASSERT(L3F3R_LFE_MAP == L3F3R_LFE.Map()); + MOZ_ASSERT(L3F4_LFE_MAP == L3F4_LFE.Map()); + + // First handle the most common cases. + switch (aMap) { + case LMONO_MAP: return LMONO; + case LMONO_LFE_MAP: return LMONO_LFE; + case LSTEREO_MAP: return LSTEREO; + case LSTEREO_LFE_MAP : return LSTEREO_LFE; + case L3F_MAP: return L3F; + case L3F_LFE_MAP: return L3F_LFE; + case L2F1_MAP: return L2F1; + case L2F1_LFE_MAP: return L2F1_LFE; + case L3F1_MAP: return L3F1; + case L3F1_LFE_MAP: return L3F1_LFE; + case L2F2_MAP: return L2F2; + case L2F2_LFE_MAP: return L2F2_LFE; + case LQUAD_MAP: return LQUAD; + case L3F2_MAP: return L3F2; + case L3F2_LFE_MAP: return L3F2_LFE; + case L3F3R_LFE_MAP: return L3F3R_LFE; + case L3F4_LFE_MAP: return L3F4_LFE; + default: + break; + } + AutoTArray<Channel, MAX_AUDIO_CHANNELS> layout; + uint32_t channels = 0; + + uint32_t i = 0; + while (aMap) { + if (aMap & 1) { + layout.AppendElement(static_cast<Channel>(i)); + channels++; + if (channels > MAX_AUDIO_CHANNELS) { + return ChannelLayout(); + } + } + aMap >>= 1; + i++; + } + return ChannelLayout(channels, layout.Elements()); +} + + bool AudioConfig::ChannelLayout::MappingTable(const ChannelLayout& aOther, uint8_t* aMap) const |