diff options
Diffstat (limited to '')
| -rw-r--r-- | src/lib/ffmpeg-2.1/swresample.pas | 315 |
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 |