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-rw-r--r--src/lib/ffmpeg-2.1/swresample.pas315
1 files changed, 156 insertions, 159 deletions
diff --git a/src/lib/ffmpeg-2.1/swresample.pas b/src/lib/ffmpeg-2.1/swresample.pas
index b6722df1..e9efe6c2 100644
--- a/src/lib/ffmpeg-2.1/swresample.pas
+++ b/src/lib/ffmpeg-2.1/swresample.pas
@@ -54,7 +54,6 @@ uses
UConfig;
const
-
{$IF LIBRESAMPLE_VERSION_MAJOR < 1}
SWR_CH_MAX = 32; (* < Maximum number of channels *)
{$ENDIF}
@@ -75,19 +74,19 @@ type
SWR_DITHER_NS_SHIBATA,
SWR_DITHER_NS_LOW_SHIBATA,
SWR_DITHER_NS_HIGH_SHIBATA,
- SWR_DITHER_NB (* < not part of API/ABI *)
+ SWR_DITHER_NB (* < not part of API/ABI *)
);
TSwrEngine = (
SWR_ENGINE_SWR, (* < SW Resampler *)
SWR_ENGINE_SOXR, (* < SoX Resampler *)
- SWR_ENGINE_NB (* < not part of API/ABI *)
+ SWR_ENGINE_NB (* < not part of API/ABI *)
);
TSwrFilterType = (
SWR_FILTER_TYPE_CUBIC, (* < Cubic *)
SWR_FILTER_TYPE_BLACKMAN_NUTTALL, (* < Blackman Nuttall Windowed Sinc *)
- SWR_FILTER_TYPE_KAISER (* < Kaiser Windowed Sinc *)
+ SWR_FILTER_TYPE_KAISER (* < Kaiser Windowed Sinc *)
);
PPSwrContext= ^PSwrContext;
@@ -95,192 +94,190 @@ type
TSwrContext = record
end;
- (**
- * Get the AVClass for swrContext. It can be used in combination with
- * AV_OPT_SEARCH_FAKE_OBJ for examining options.
- *
- * @see av_opt_find().
- *)
- function swr_get_class(): PAVClass;
+(**
+ * Get the AVClass for swrContext. It can be used in combination with
+ * AV_OPT_SEARCH_FAKE_OBJ for examining options.
+ *
+ * @see av_opt_find().
+ *)
+function swr_get_class(): PAVClass;
cdecl; external swresample;
- (**
- * Allocate SwrContext.
- *
- * If you use this function you will need to set the parameters (manually or
- * with swr_alloc_set_opts()) before calling swr_init().
- *
- * @see swr_alloc_set_opts(), swr_init(), swr_free()
- * @return NULL on error, allocated context otherwise
- *)
-
- function swr_alloc(): PSwrContext;
+(**
+ * Allocate SwrContext.
+ *
+ * If you use this function you will need to set the parameters (manually or
+ * with swr_alloc_set_opts()) before calling swr_init().
+ *
+ * @see swr_alloc_set_opts(), swr_init(), swr_free()
+ * @return NULL on error, allocated context otherwise
+ *)
+function swr_alloc(): PSwrContext;
cdecl; external swresample;
- (**
- * Initialize context after user parameters have been set.
- *
- * @return AVERROR error code in case of failure.
- *)
- function swr_init(s : PSwrContext): cint;
+(**
+ * Initialize context after user parameters have been set.
+ *
+ * @return AVERROR error code in case of failure.
+ *)
+function swr_init(s: PSwrContext): cint;
cdecl; external swresample;
- (**
- * Allocate SwrContext if needed and set/reset common parameters.
- *
- * This function does not require s to be allocated with swr_alloc(). On the
- * other hand, swr_alloc() can use swr_alloc_set_opts() to set the parameters
- * on the allocated context.
- *
- * @param s Swr context, can be NULL
- * @param out_ch_layout output channel layout (AV_CH_LAYOUT_* )
- * @param out_sample_fmt output sample format (AV_SAMPLE_FMT_* ).
- * @param out_sample_rate output sample rate (frequency in Hz)
- * @param in_ch_layout input channel layout (AV_CH_LAYOUT_* )
- * @param in_sample_fmt input sample format (AV_SAMPLE_FMT_* ).
- * @param in_sample_rate input sample rate (frequency in Hz)
- * @param log_offset logging level offset
- * @param log_ctx parent logging context, can be NULL
- *
- * @see swr_init(), swr_free()
- * @return NULL on error, allocated context otherwise
- *)
- function swr_alloc_set_opts(s : PSwrContext;
- out_ch_layout: cint64; out_sample_fmt: TAVSampleFormat; out_sample_rate: cint;
- in_ch_layout: cint64; in_sample_fmt: TAVSampleFormat; in_sample_rate: cint;
- log_offset: cint; log_ctx: pointer): PSwrContext;
+(**
+ * Allocate SwrContext if needed and set/reset common parameters.
+ *
+ * This function does not require s to be allocated with swr_alloc(). On the
+ * other hand, swr_alloc() can use swr_alloc_set_opts() to set the parameters
+ * on the allocated context.
+ *
+ * @param s Swr context, can be NULL
+ * @param out_ch_layout output channel layout (AV_CH_LAYOUT_* )
+ * @param out_sample_fmt output sample format (AV_SAMPLE_FMT_* ).
+ * @param out_sample_rate output sample rate (frequency in Hz)
+ * @param in_ch_layout input channel layout (AV_CH_LAYOUT_* )
+ * @param in_sample_fmt input sample format (AV_SAMPLE_FMT_* ).
+ * @param in_sample_rate input sample rate (frequency in Hz)
+ * @param log_offset logging level offset
+ * @param log_ctx parent logging context, can be NULL
+ *
+ * @see swr_init(), swr_free()
+ * @return NULL on error, allocated context otherwise
+ *)
+function swr_alloc_set_opts(s: PSwrContext;
+ out_ch_layout: cint64; out_sample_fmt: TAVSampleFormat; out_sample_rate: cint;
+ in_ch_layout: cint64; in_sample_fmt: TAVSampleFormat; in_sample_rate: cint;
+ log_offset: cint; log_ctx: pointer): PSwrContext;
cdecl; external swresample;
- (**
- * Free the given SwrContext and set the pointer to NULL.
- *)
- procedure swr_free(s: PPSwrContext);
+(**
+ * Free the given SwrContext and set the pointer to NULL.
+ *)
+procedure swr_free(s: PPSwrContext);
cdecl; external swresample;
- (**
- * Convert audio.
- *
- * in and in_count can be set to 0 to flush the last few samples out at the
- * end.
- *
- * If more input is provided than output space then the input will be buffered.
- * You can avoid this buffering by providing more output space than input.
- * Convertion will run directly without copying whenever possible.
- *
- * @param s allocated Swr context, with parameters set
- * @param out output buffers, only the first one need be set in case of packed audio
- * @param out_count amount of space available for output in samples per channel
- * @param in input buffers, only the first one need to be set in case of packed audio
- * @param in_count number of input samples available in one channel
- *
- * @return number of samples output per channel, negative value on error
- *)
- function swr_convert(s: PSwrContext; out_: PByte; out_count: cint;
- {const} in_: PByte; in_count: cint): cint;
+(**
+ * Convert audio.
+ *
+ * in and in_count can be set to 0 to flush the last few samples out at the
+ * end.
+ *
+ * If more input is provided than output space then the input will be buffered.
+ * You can avoid this buffering by providing more output space than input.
+ * Convertion will run directly without copying whenever possible.
+ *
+ * @param s allocated Swr context, with parameters set
+ * @param out output buffers, only the first one need be set in case of packed audio
+ * @param out_count amount of space available for output in samples per channel
+ * @param in input buffers, only the first one need to be set in case of packed audio
+ * @param in_count number of input samples available in one channel
+ *
+ * @return number of samples output per channel, negative value on error
+ *)
+function swr_convert(s: PSwrContext; out_: PByte; out_count: cint;
+ {const} in_: PByte; in_count: cint): cint;
cdecl; external swresample;
- (**
- * Convert the next timestamp from input to output
- * timestamps are in 1/(in_sample_rate * out_sample_rate) units.
- *
- * @note There are 2 slightly differently behaving modes.
- * First is when automatic timestamp compensation is not used, (min_compensation >= FLT_MAX)
- * in this case timestamps will be passed through with delays compensated
- * Second is when automatic timestamp compensation is used, (min_compensation < FLT_MAX)
- * in this case the output timestamps will match output sample numbers
- *
- * @param pts timestamp for the next input sample, INT64_MIN if unknown
- * @return the output timestamp for the next output sample
- *)
- function swr_next_pts(s: PSwrContext; pts: cint): cint64;
+(**
+ * Convert the next timestamp from input to output
+ * timestamps are in 1/(in_sample_rate * out_sample_rate) units.
+ *
+ * @note There are 2 slightly differently behaving modes.
+ * First is when automatic timestamp compensation is not used, (min_compensation >= FLT_MAX)
+ * in this case timestamps will be passed through with delays compensated
+ * Second is when automatic timestamp compensation is used, (min_compensation < FLT_MAX)
+ * in this case the output timestamps will match output sample numbers
+ *
+ * @param pts timestamp for the next input sample, INT64_MIN if unknown
+ * @return the output timestamp for the next output sample
+ *)
+function swr_next_pts(s: PSwrContext; pts: cint64): cint64;
cdecl; external swresample;
- (**
- * Activate resampling compensation.
- *)
- function swr_set_compensation(s: PSwrContext; sample_delta: cint; compensation_distance: cint): cint;
+(**
+ * Activate resampling compensation.
+ *)
+function swr_set_compensation(s: PSwrContext; sample_delta: cint; compensation_distance: cint): cint;
cdecl; external swresample;
- (**
- * Set a customized input channel mapping.
- *
- * @param s allocated Swr context, not yet initialized
- * @param channel_map customized input channel mapping (array of channel
- * indexes, -1 for a muted channel)
- * @return AVERROR error code in case of failure.
- *)
- function swr_set_channel_mapping(s: PSwrContext; {const} channel_map: pcint): cint;
+(**
+ * Set a customized input channel mapping.
+ *
+ * @param s allocated Swr context, not yet initialized
+ * @param channel_map customized input channel mapping (array of channel
+ * indexes, -1 for a muted channel)
+ * @return AVERROR error code in case of failure.
+ *)
+function swr_set_channel_mapping(s: PSwrContext; {const} channel_map: pcint): cint;
cdecl; external swresample;
- (**
- * Set a customized remix matrix.
- *
- * @param s allocated Swr context, not yet initialized
- * @param matrix remix coefficients; matrix[i + stride * o] is
- * the weight of input channel i in output channel o
- * @param stride offset between lines of the matrix
- * @return AVERROR error code in case of failure.
- *)
- function swr_set_matrix(s: PSwrContext; {const} matrix: pcdouble; stride: cint): cint;
+(**
+ * Set a customized remix matrix.
+ *
+ * @param s allocated Swr context, not yet initialized
+ * @param matrix remix coefficients; matrix[i + stride * o] is
+ * the weight of input channel i in output channel o
+ * @param stride offset between lines of the matrix
+ * @return AVERROR error code in case of failure.
+ *)
+function swr_set_matrix(s: PSwrContext; {const} matrix: pcdouble; stride: cint): cint;
cdecl; external swresample;
- (**
- * Drops the specified number of output samples.
- *)
- function swr_drop_output(s: PSwrContext; count: cint): cint;
+(**
+ * Drops the specified number of output samples.
+ *)
+function swr_drop_output(s: PSwrContext; count: cint): cint;
cdecl; external swresample;
- (**
- * Injects the specified number of silence samples.
- *)
- function swr_inject_silence(s: PSwrContext; count: cint): cint;
+(**
+ * Injects the specified number of silence samples.
+ *)
+function swr_inject_silence(s: PSwrContext; count: cint): cint;
cdecl; external swresample;
- (**
- * Gets the delay the next input sample will experience relative to the next output sample.
- *
- * Swresample can buffer data if more input has been provided than available
- * output space, also converting between sample rates needs a delay.
- * This function returns the sum of all such delays.
- * The exact delay is not necessarily an integer value in either input or
- * output sample rate. Especially when downsampling by a large value, the
- * output sample rate may be a poor choice to represent the delay, similarly
- * for upsampling and the input sample rate.
- *
- * @param s swr context
- * @param base timebase in which the returned delay will be
- * if its set to 1 the returned delay is in seconds
- * if its set to 1000 the returned delay is in milli seconds
- * if its set to the input sample rate then the returned delay is in input samples
- * if its set to the output sample rate then the returned delay is in output samples
- * an exact rounding free delay can be found by using LCM(in_sample_rate, out_sample_rate)
- * @returns the delay in 1/base units.
- *)
- function swr_get_delay(s: PSwrContext; base: cint64): cint64;
+(**
+ * Gets the delay the next input sample will experience relative to the next output sample.
+ *
+ * Swresample can buffer data if more input has been provided than available
+ * output space, also converting between sample rates needs a delay.
+ * This function returns the sum of all such delays.
+ * The exact delay is not necessarily an integer value in either input or
+ * output sample rate. Especially when downsampling by a large value, the
+ * output sample rate may be a poor choice to represent the delay, similarly
+ * for upsampling and the input sample rate.
+ *
+ * @param s swr context
+ * @param base timebase in which the returned delay will be
+ * if its set to 1 the returned delay is in seconds
+ * if its set to 1000 the returned delay is in milli seconds
+ * if its set to the input sample rate then the returned delay is in input samples
+ * if its set to the output sample rate then the returned delay is in output samples
+ * an exact rounding free delay can be found by using LCM(in_sample_rate, out_sample_rate)
+ * @returns the delay in 1/base units.
+ *)
+function swr_get_delay(s: PSwrContext; base: cint64): cint64;
cdecl; external swresample;
- (**
- * Return the LIBSWRESAMPLE_VERSION_INT constant.
- *)
- function swresample_version(): cuint;
+(**
+ * Return the LIBSWRESAMPLE_VERSION_INT constant.
+ *)
+function swresample_version(): cuint;
cdecl; external swresample;
- (**
- * Return the swr build-time configuration.
- *)
- function swresample_configuration(): cuchar;
+(**
+ * Return the swr build-time configuration.
+ *)
+function swresample_configuration(): cuchar;
cdecl; external swresample;
- (**
- * Return the swr license.
- *)
- function swresample_license(): cuchar;
- cdecl; external swresample;
-
- (**
- * @
- *)
+(**
+ * Return the swr license.
+ *)
+function swresample_license(): cuchar;
+ cdecl; external swresample;
+(**
+ * @
+ *)
implementation